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The Lessepsian migration (or Erythrean invasion) is the migration of marine species along the Suez Canal, usually from the Red Sea to the Mediterranean Sea, and more rarely in the opposite direction. When the canal was completed in 1869, fish, crustaceans, mollusks, and other marine animals and plants were exposed to an artificial passage between the two naturally separate bodies of water, and cross-contamination was made possible between formerly isolated ecosystems. The phenomenon is still occurring today. It is named after Ferdinand de Lesseps, the French diplomat in charge of the canal's construction. The term was coined by Francis Dov Por in his 1978 book.^[1]

The migration of invasive species through the Suez Canal from the Indo-Pacific region has been facilitated by many factors, both abiotic and anthropogenic, and presents significant implications for the ecological health and economic stability of the contaminated areas; of particular concern is the fisheries industry in the Eastern Mediterranean. Despite these threats, the phenomenon has allowed scientists to study an invasive event on a large scale in a short period of time, which usually takes hundreds of years in natural conditions.

In a wider context, the term Lessepsian migration is used to describe any animal migration facilitated by man-made structures, i.e. migration which would not have occurred had it not been for the presence of an artificial structure.

Background

The opening of the Suez Canal created the first saltwater passage between the Mediterranean Sea and the Red Sea. Constructed in 1869 to provide a more direct trade route from Europe to India and the Far East, the canal is 162.5 km (101.0 mi) long, with a depth of 10–15 m (33–49 ft) and a width varying between 200 and 300 m (660 and 980 ft).^[2]

Because the surface of the Red Sea is slightly higher in elevation than the eastern Mediterranean, the canal serves as a tidal strait by which Red Sea water pours into the Mediterranean. The Bitter Lakes, which are natural hypersaline lakes that form part of the canal, blocked the migration of Red Sea species into the Mediterranean for many decades, but as the salinity of the lakes gradually equalized with that of the Red Sea, the barrier to migration was removed, and plants and animals from the Red Sea began to colonize the eastern Mediterranean.^[3] The Red Sea, an extension of the Indian Ocean, is generally saltier and less nutrient-rich than the Mediterranean, an extension of the Atlantic Ocean, so Red Sea species, able to tolerate harsh environments, have advantages over Atlantic species in the conditions of the Eastern Mediterranean. Accordingly, most migrations between the two bodies of water are invasions of Red Sea species into the Mediterranean, and relatively few migrations occur in the opposite direction. The construction of the Aswan High Dam across the Nile River in the 1960s reduced the inflow of fresh water and nutrient-rich silt from the Nile into the eastern Mediterranean, making conditions in the eastern Mediterranean even more like those of the Red Sea, thereby increasing the impact of the invasions and facilitating the occurrence of new ones.^[3]

The Red Sea is a profusely abundant tropical marine environment sharing species in common with the eastern Indo-Pacific region, while the Mediterranean is a temperate sea with much lower productivity; the two ecosystems are extremely different in terms of structure and ecology.^[2] The Suez Canal quickly became the main pathway for the introduction of invasive species into the Eastern Mediterranean, having zoogeographic and ecological consequences far beyond what the designers foresaw. The Lessepsian migration includes hundreds of Red Sea and Indo-Pacific species that have colonized and established themselves in the Eastern Mediterranean system, causing biogeographic changes without precedent in human memory.^[4] The trend is accelerating: to take just the fish, a long-term cross-Basin survey engaged by the Mediterranean Science Commission recently documented that in the first twenty years of our century more fish species from the Indo-Pacific Ocean had reached the Mediterranean than during the entire 20th century.^[5]

As of about 2010, over 1,000 species — both vertebrates and invertebrates — native to the Red Sea had been identified in the Mediterranean Sea. It was thought that many others were as yet unidentified. From there they have spread even further afield, supplying 95% of Indo-Pacific species that have reached the Ponto-Caspian seas and increasingly rapidly.^[6] In the late 20th and early 21st centuries, the Egyptian government announced its intentions to deepen and widen the canal, which raised concerns from marine biologists, fearing this would facilitate the crossing of the canal for additional species, accelerating the invasion of Red Sea species into the Mediterranean.^[7] The extension was completed in 2015.

Ecological impacts

Outcompetition of natives

Native Argyrosomus regius vs. invasive Scomberomorus commerson

A wide-ranging species in the eastern Atlantic and Mediterranean, the meagre Argyrosomus regius is a species indigenous to the Eastern Mediterranean and was one of the most common commercial fish in the Levant. It has since disappeared from local catches, while the narrow-barred Spanish mackerel Scomberomorus commerson, a known Lessepsian migrant, has dramatically increased in population. Studies performed on this occurrence conclude that, due to similar life histories and diets, this may be an example of an invasive migrant outcompeting a native species and occupying its niche.^[4]

Native Melicertus kerathurus vs. invasive prawns

Eight species of invasive prawns from the Erythraean Sea have been recorded in the Eastern Mediterranean. These prawns are considered highly prized in Levantine fisheries, and compose most of the prawn catch off the Mediterranean coast of Egypt, being 6% of total Egyptian landings. This high abundance of invasive prawns has led to the decline of a native penaeid prawn, Melicertus kerathurus, which supported a commercial Israeli fishery throughout the 1950s. Due to outcompetition and its habitat being overrun by these migrants, this native species has since disappeared, with resultant detrimental impacts on the commercial fishery.^[9]

Parasitic invaders

The invasion of new Red Sea species into the Mediterranean has facilitated the invasion of their associated parasites, for example the copepod Eudactylera aspera, which was found on a spinner shark, Carcharhinus brevipinna, taken off the coast of Tunisia. The copepod had originally been described from specimens taken from C. brevipinna off Madagascar and its finding in the Mediterranean has arguably confirmed the previously disputed status of C. brevipinna as a Lessepsian migrant. In addition, parasites originating in the Red Sea have shown an ability to use related native Mediterranean fish species as alternative hosts; e.g. the copepod Nipergasilus bora was known to parasitise the grey mullets Mugil cephalus and Liza carinata in the Red Sea, both taxa having been recorded as Lessepsian migrants, and was subsequently found parasitising the native Mediterranean mullets Chelon aurata and Chelon labrosus.^[10]

Sometimes, the invasion of parasites may reduce the competitive advantages that Red Sea invaders have in the Mediterranean. For example, the Indo-Pacific swimming crab Charybdis longicollis was first recorded in the Mediterranean in the mid-1950s and became dominant in silty and sandy substrates off the coast of Israel, making up to 70% of the total biomass in these habitats. Until 1992, none of the specimens collected was infected with the parasite Heterosaccus dollfusi, but in that year, a few infected crabs were collected. The parasite is a barnacle which desexes its host. Within three years, 77% of the crabs collected in Haifa Bay were infected, and the parasite had spread to southern Turkey. This rapid increase and high infection rate is attributed to the extremely high population density of the host and the year-round reproduction of the parasite. One effect of this was that the population of the Mediterranean native swimming crab Liocarcinus vernalis recovered somewhat.^[11]

Species displacements

Fisheries have been heavily affected. The goldband goatfish, Upeneus moluccensis, was first recorded in the Eastern Mediterranean in the 1930s and has since established an abundant population. Following the warm winter of 1954–1955, it increased to 83% of the Israeli catch, replacing the native red mullet, which affected the Egyptian fishery, being 3% of their total landings.^[12] The high water temperatures of this unusually warm winter may have resulted in the poor survival of red mullet juveniles, which may have allowed the goatfish population to expand into the opened niche.^[9] Native mullet have since been displaced into deeper, cooler waters, where Lessepsian migrants consist of only 20% of the catch, whereas in shallower, warmer waters, this invasive species takes up 87% of the catch.^[9] From these data, the Lessepsian migrants apparently have not adapted to the more temperate environment of the deeper areas of the basin, but have established dominant populations in the habitats most similar to the tropical sea habitats from which they came. The population of Caesio varilineata (a fusilier fish, Caesionidae), recently reported from the eastern Mediterranean Sea,^[13] may develop in a similar fashion. As of 2006^[update] along the Mediterranean coast of Israel, over half of trawl catches are Lessepsians. Worse, full substitution has not occurred – total fishery productivity has been reduced by the invaders.^[14]

Food web phase shift

The marbled spinefoot (Siganus rivulatus) and dusky spinefoot (Siganus luridus), both indigenous Red Sea rabbitfish, were first recorded off the coast of Mandate Palestine in 1924. In only a few decades, these schooling, herbivorous fish were able to settle in a range of habitats forming abundant populations, to the extent that George and Athanassiou, in a paper published in 1967, reported: "The millions of young abound over rocky outcropping grazing on the relatively abundant early summer algal cover".^[15] By 2004, a study on these species found that they comprise 80% of the abundance of herbivorous fish in the shallow coastal sites of Lebanon.^[9] They have been able to create marked phase shifts within the food web on multiple levels. Prior to the arrival of these Lessepsian migrants, the herbivores filled a small ecological role within the Eastern Mediterranean system. Therefore, with such a high influx of herbivorous species in a small period of time, this phenomenon has normalised the food web, increasing the rate at which algae are consumed and serving as a major prey item for large predators.^[9] Further, these Red Sea migrants are affecting fisheries by outcompeting native fish of high commercial value, such as the seabream Boops boops.^[9] A nonindigenous species of mussel – Brachidontes pharaonis – from the Indo-Pacific has also proliferated. This mussel, which has a thicker shell than that of the native mussel, has created a change in predation patterns, since they are more difficult for predators to handle.^[9]

Anti-Lessepsian migration

Only a comparatively few species have colonised the Red Sea from the Mediterranean; these are called anti-Lessepsian migrants. As the predominant flow of the canal is from south to north, this acts against the southward movement of Mediterranean species, and as stated above, the Red Sea has higher salinity, fewer nutrients, and a much more diverse biota than the Eastern Mediterranean. Some of the anti-Lessepsian migrants such as the sea star Sphaerodiscus placenta are found only in specialised habitats such as the lagoon of El Bilaiyim, which lies 180 km (110 mi) south of the southern entrance to the Suez Canal, but is much more saline than the surrounding waters of the Gulf of Suez.^[3]

The sea slug Biuve fulvipunctata was described from waters around Japan and is widespread in the eastern Indian Ocean and western Pacific. It was first identified in the Mediterranean in 1961, and was seen in the Red Sea in 2005, most likely as a result of anti-Lessepsian migration.^[16] Among the fish species that have been confirmed as anti-Lessepsian migrants are peacock blenny (Salaria pavo),^[17] Solea aegyptiaca, Mediterranean moray (Muraena helena), the rock goby (Gobius paganellus),^[18] the meagre (Argyrosomus regius),^[19] the comber (Serranus cabrilla),^[20] European seabass (Dicentrarchus labrax), and spotted seabass (Dicentrarchus punctatus).^[21]

Other examples

North America

The sea lamprey reached Lake Ontario from the Atlantic Ocean through shipping canals and was recorded for the first time in Lake Ontario in the 1830s, but Niagara Falls was a barrier to their further spread. The deepening of the Welland Canal in 1919 allowed the sea lamprey to bypass the barrier created by the falls, and by 1938, sea lampreys had been recorded in all of the Great Lakes.^[22]

The alewife (Alosa pseudoharengus), a species of shad from the Western Atlantic, invaded the Great Lakes by using the Welland Canal to bypass Niagara Falls. They colonised the Great Lakes and became abundant mostly in Lake Huron and Lake Michigan, reaching their peak abundance by the 1950s and 1980s.^[23]^[24]

Europe

The white-eye bream (Ballerus sapa) has invaded the Vistula River basin by migrating along the Dnieper–Bug Canal in Belarus, which connects the Vistula drainage basin with that of the Dnieper River.^[25]

Panama

A small number of species have used the Panama Canal to move from the Atlantic Ocean to the Pacific Ocean, and vice versa. Six species of Atlantic fish were recorded on the Pacific side of the canal, and three species of Pacific fish were found on the Atlantic side of the canal. The Atlantic fish included Lupinoblennius dispar, Hypleurochilus aequipinnis, Barbulifer ceuthoecus, Oostethus lineatus and Lophogobius cyprinoides, while the Pacific species moving to the Atlantic included Gnathanodon speciosus. The Gatun Lake's freshwater environment forms a barrier to the interchange of marine species.^[26]

Shipping containers

Shipping containers that fall off cargo ships can provide a new habitat for invasive species, in the same manner as an artificial reef. The ocean floor along shipping lanes is often devoid of hard surfaces needed by some species, and it is theorised that lost containers could act as stepping stones that invasive species could use to travel to new harbours.^[27]

References

^ Por, Francis Dov (1978). 'Lessepsian Migration: The Influx of Red Sea Biota Into the Mediterranean by Way of the Suez Canal. Ecological studies. Berlin: Springer. ISBN 978-3-540-08381-8.
^ ^a ^b Golani, Daniel (1998). "Impact of Red Sea fish migrants through the Suez Canal on the aquatic environment of the Eastern Mediterranean". Bulletin Series Yale School of Forestry and Environmental Studies (103): 375–387.
^ ^a ^b ^c "Essay about the phenomenon of Lessepsian Migration". Colloquial Meeting of Marine Biology I. Pierre Madl. Retrieved 29 December 2016.
^ ^a ^b Galil, Bella S.; Boero, Ferdinando; Campbell, Marnie L.; Carlton, James T.; Cook, Elizabeth; Fraschetti, Simonetta; Gollasch, Stephan; Hewitt, Chad L.; Jelmert, Anders (1 April 2015). "'Double trouble': the expansion of the Suez Canal and marine bioinvasions in the Mediterranean Sea". Biological Invasions. 17 (4): 973–976. Bibcode:2015BiInv..17..973G. doi:10.1007/s10530-014-0778-y. hdl:10261/113660. ISSN 1387-3547.
^ Atlas of Exotic Fishes in the Mediterranean Sea. 2nd Edition. 2021. (Briand, Frederic, Ed.) CIESM Publishers, Paris, Monaco 366 p.[1]
^ Shiganova, Tamara (1 December 2010). "Biotic Homogenization of Inland Seas of the Ponto-Caspian". Annual Review of Ecology, Evolution, and Systematics. 41 (1). Annual Reviews: 103–125. doi:10.1146/annurev.ecolsys.110308.120148. ISSN 1543-592X.
^ Galil, B. S. and Zenetos, A. (2002). A sea change: exotics in the eastern Mediterranean Sea, in: Leppäkoski, E. et al. (2002). Invasive aquatic species of Europe: distribution, impacts and management. pp. 325–36.
^ Psomadakis, P.N.; Scacco, U.; Consalvo, I.; Bottaro, M.; Leone, F.; Vacchi, M. (2 February 2008). "New records of the lessepsian fish Fistularia commersonii (Osteichthyes: Fistulariidae) from the central Tyrrhenian Sea: signs of an incoming colonization?" (PDF). JMBA2 Biodiversity Records. Archived from the original (PDF) on 21 July 2011.
^ ^a ^b ^c ^d ^e ^f ^g Galil, B. S. (1 January 2007). "Loss or gain? Invasive aliens and biodiversity in the Mediterranean Sea". Marine Pollution Bulletin. Marine Bioinvasions: A collection of reviews. 55 (7): 314–322. Bibcode:2007MarPB..55..314G. doi:10.1016/j.marpolbul.2006.11.008. PMID 17222869.
^ Maillard, C.; Raibaut, A. (2012). "18. Human activities and modifications of ichtyofauna of the Mediterranean Sea: effects on parasitosis". In F. di Castri; A.J. Hansen; M Debussche (eds.). Biological Invasions in Europe and the Mediterranean Basin Volume 65 of Monographiae Biologicae. Springer Science & Business Media. p. 300. ISBN 978-9400918764.
^ Galil, Bella S. (2000). "Lessepsian Immigration: Human impact on Leventine Biogeography". In J. Carel von Vaupel Klein (ed.). The Biodiversity Crisis and Crustacea – Proceedings of the Fourth International Crustacean Congress Crustacean Issues. CRC Press. pp. 50–51.
^ "Review of the state of world marine capture fisheries management: Indian Ocean". Food and Agriculture Organization. Retrieved 28 November 2017.
^ Bos, A.R.; Ogwang, J. (2018). "Caesio varilineata Carpenter, 1987 (Osteichthyes: Caesionidae) a new alien fish in the southeastern Mediterranean Sea" (PDF). BioInvasions Records. 7 (4): 441–445. doi:10.3391/bir.2018.7.4.15.
^ Sala, Enric; Knowlton, Nancy (1 November 2006). "Global Marine Biodiversity Trends". Annual Review of Environment and Resources. 31 (1). Annual Reviews: 93–122. doi:10.1146/annurev.energy.31.020105.100235. ISSN 1543-5938.
^ C.J., George; V., Athanassiou (1967). "A two year study of the fishes appearing in the seine fishery of St. George Bay, Lebanon". Annali del Museo Civico di Storia Naturale Giacomo Doria.
^ Malaquias, Manuel; Zamora-Silva, Andrea; Vitale, Dyana; et al. (2017). "The Suez Canal as a revolving door for marine species: a reply to Galil et al. (2016)". Aquatic Invasions. 12 (1): 1–4. doi:10.3391/ai.2017.12.1.01. hdl:2066/177049.
^ Di Natale, Antonio; Bilecenoglu, Murat; Bariche, Michel; et al. (2014). "Salaria pavo". IUCN Red List of Threatened Species. 2014: e.T185175A1776635. doi:10.2305/IUCN.UK.2014-3.RLTS.T185175A1776635.en.
^ J.C. Hureau (ed.). "Fishes of the NE Atlantic and the Mediterranean Rock goby (Gobius paganellus)". Marine Species Identification Portal. Retrieved 1 September 2018.
^ "Argyrosomus regius (Asso, 1801)". Fishbase.org. Retrieved 26 December 2016.
^ Bos, Arthur R.; Ogwang, Joel; Bariche, Michel; et al. (2020). "Anti-Lessepsian migration rectified: the Comber Serranus cabrilla (L. 1758) existed in the Red Sea prior to the Suez Canal opening". Marine Biology. 167 (126): 1–10. Bibcode:2020MarBi.167..126B. doi:10.1007/s00227-020-03748-0. S2CID 225432110.
^ Chanet, Bruno; Desoutter-Meniger, Martine; Bogorodsky, Sergey V. (2012). "Range extension of Egyptian sole Solea aegyptiaca (Soleidae: Pleuronectiformes), in the Red Sea" (PDF). Cybium. 36 (4): 581–584.
^ "Sea Lamprey: The Battle Continues". Regents of the University of Minnesota. Retrieved 29 December 2016.
^ Froese, Rainer; Pauly, Daniel (eds.). "Alosa pseudoharengus". FishBase. June 2021 version.
^ Fuller, P.; Maynard, E.; Raikow, D.; et al. (2021). "Alosa pseudoharengus (Wilson, 1811)". U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, Florida. Retrieved 24 October 2021.
^ Freyhof, J.; Kottelat, M. (2008). "Ballerus sapa". IUCN Red List of Threatened Species. 2008: e.T135639A4168069. doi:10.2305/IUCN.UK.2008.RLTS.T135639A4168069.en.
^ McCosker, J.E.; Dawson, C.E. (1975). "Biotic passage through the Panama Canal, with particular reference to fishes". Marine Biology. 30 (4): 343–351. Bibcode:1975MarBi..30..343M. doi:10.1007/BF00390639. S2CID 83502110.
^ Joyce, Christopher (1 April 2011). "Lost, Then Found: Shipping Containers On Seafloor". NPR.

External links

The dictionary definition of Lessepsian at Wiktionary

[1] Por, Francis Dov (1978). 'Lessepsian Migration: The Influx of Red Sea Biota Into the Mediterranean by Way of the Suez Canal. Ecological studies. Berlin: Springer. ISBN 978-3-540-08381-8.

[:0-2] Golani, Daniel (1998). "Impact of Red Sea fish migrants through the Suez Canal on the aquatic environment of the Eastern Mediterranean". Bulletin Series Yale School of Forestry and Environmental Studies (103): 375–387.

[Madl-3] "Essay about the phenomenon of Lessepsian Migration". Colloquial Meeting of Marine Biology I. Pierre Madl. Retrieved 29 December 2016.

[Galil_973–976-4] Galil, Bella S.; Boero, Ferdinando; Campbell, Marnie L.; Carlton, James T.; Cook, Elizabeth; Fraschetti, Simonetta; Gollasch, Stephan; Hewitt, Chad L.; Jelmert, Anders (1 April 2015). "'Double trouble': the expansion of the Suez Canal and marine bioinvasions in the Mediterranean Sea". Biological Invasions. 17 (4): 973–976. Bibcode:2015BiInv..17..973G. doi:10.1007/s10530-014-0778-y. hdl:10261/113660. ISSN 1387-3547.

[5] Atlas of Exotic Fishes in the Mediterranean Sea. 2nd Edition. 2021. (Briand, Frederic, Ed.) CIESM Publishers, Paris, Monaco 366 p.[1]

[Shiganova-2010-6] Shiganova, Tamara (1 December 2010). "Biotic Homogenization of Inland Seas of the Ponto-Caspian". Annual Review of Ecology, Evolution, and Systematics. 41 (1). Annual Reviews: 103–125. doi:10.1146/annurev.ecolsys.110308.120148. ISSN 1543-592X.

[7] Galil, B. S. and Zenetos, A. (2002). A sea change: exotics in the eastern Mediterranean Sea, in: Leppäkoski, E. et al. (2002). Invasive aquatic species of Europe: distribution, impacts and management. pp. 325–36.

[8] Psomadakis, P.N.; Scacco, U.; Consalvo, I.; Bottaro, M.; Leone, F.; Vacchi, M. (2 February 2008). "New records of the lessepsian fish Fistularia commersonii (Osteichthyes: Fistulariidae) from the central Tyrrhenian Sea: signs of an incoming colonization?" (PDF). JMBA2 Biodiversity Records. Archived from the original (PDF) on 21 July 2011.

[:12-9] ^ ^a ^b ^c ^d ^e ^f ^g Galil, B. S. (1 January 2007). "Loss or gain? Invasive aliens and biodiversity in the Mediterranean Sea". Marine Pollution Bulletin. Marine Bioinvasions: A collection of reviews. 55 (7): 314–322. Bibcode:2007MarPB..55..314G. doi:10.1016/j.marpolbul.2006.11.008. PMID 17222869.

[di_Castri-10] Maillard, C.; Raibaut, A. (2012). "18. Human activities and modifications of ichtyofauna of the Mediterranean Sea: effects on parasitosis". In F. di Castri; A.J. Hansen; M Debussche (eds.). Biological Invasions in Europe and the Mediterranean Basin Volume 65 of Monographiae Biologicae. Springer Science & Business Media. p. 300. ISBN 978-9400918764.

[Galil-11] Galil, Bella S. (2000). "Lessepsian Immigration: Human impact on Leventine Biogeography". In J. Carel von Vaupel Klein (ed.). The Biodiversity Crisis and Crustacea – Proceedings of the Fourth International Crustacean Congress Crustacean Issues. CRC Press. pp. 50–51.

[12] "Review of the state of world marine capture fisheries management: Indian Ocean". Food and Agriculture Organization. Retrieved 28 November 2017.

[13] Bos, A.R.; Ogwang, J. (2018). "Caesio varilineata Carpenter, 1987 (Osteichthyes: Caesionidae) a new alien fish in the southeastern Mediterranean Sea" (PDF). BioInvasions Records. 7 (4): 441–445. doi:10.3391/bir.2018.7.4.15.

[Sala-Knowlton-2006-14] Sala, Enric; Knowlton, Nancy (1 November 2006). "Global Marine Biodiversity Trends". Annual Review of Environment and Resources. 31 (1). Annual Reviews: 93–122. doi:10.1146/annurev.energy.31.020105.100235. ISSN 1543-5938.

[15] C.J., George; V., Athanassiou (1967). "A two year study of the fishes appearing in the seine fishery of St. George Bay, Lebanon". Annali del Museo Civico di Storia Naturale Giacomo Doria.

[Malaquias-16] Malaquias, Manuel; Zamora-Silva, Andrea; Vitale, Dyana; et al. (2017). "The Suez Canal as a revolving door for marine species: a reply to Galil et al. (2016)". Aquatic Invasions. 12 (1): 1–4. doi:10.3391/ai.2017.12.1.01. hdl:2066/177049.

[iucn-17] Di Natale, Antonio; Bilecenoglu, Murat; Bariche, Michel; et al. (2014). "Salaria pavo". IUCN Red List of Threatened Species. 2014: e.T185175A1776635. doi:10.2305/IUCN.UK.2014-3.RLTS.T185175A1776635.en.

[MSIP-18] J.C. Hureau (ed.). "Fishes of the NE Atlantic and the Mediterranean Rock goby (Gobius paganellus)". Marine Species Identification Portal. Retrieved 1 September 2018.

[Fishbase-19] "Argyrosomus regius (Asso, 1801)". Fishbase.org. Retrieved 26 December 2016.

[Bos2020-20] Bos, Arthur R.; Ogwang, Joel; Bariche, Michel; et al. (2020). "Anti-Lessepsian migration rectified: the Comber Serranus cabrilla (L. 1758) existed in the Red Sea prior to the Suez Canal opening". Marine Biology. 167 (126): 1–10. Bibcode:2020MarBi.167..126B. doi:10.1007/s00227-020-03748-0. S2CID 225432110.

[Chanet-21] Chanet, Bruno; Desoutter-Meniger, Martine; Bogorodsky, Sergey V. (2012). "Range extension of Egyptian sole Solea aegyptiaca (Soleidae: Pleuronectiformes), in the Red Sea" (PDF). Cybium. 36 (4): 581–584.

[MSG-22] "Sea Lamprey: The Battle Continues". Regents of the University of Minnesota. Retrieved 29 December 2016.

[Alewife-23] Froese, Rainer; Pauly, Daniel (eds.). "Alosa pseudoharengus". FishBase. June 2021 version.

[NAS-24] Fuller, P.; Maynard, E.; Raikow, D.; et al. (2021). "Alosa pseudoharengus (Wilson, 1811)". U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, Florida. Retrieved 24 October 2021.

[IUCN-25] Freyhof, J.; Kottelat, M. (2008). "Ballerus sapa". IUCN Red List of Threatened Species. 2008: e.T135639A4168069. doi:10.2305/IUCN.UK.2008.RLTS.T135639A4168069.en.

[McCosker-26] McCosker, J.E.; Dawson, C.E. (1975). "Biotic passage through the Panama Canal, with particular reference to fishes". Marine Biology. 30 (4): 343–351. Bibcode:1975MarBi..30..343M. doi:10.1007/BF00390639. S2CID 83502110.

[27] Joyce, Christopher (1 April 2011). "Lost, Then Found: Shipping Containers On Seafloor". NPR.

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@@ Line 1: / Line 1: @@
-{{Short description|Unintended migration of marine species across the Suez Canal}}
+{{Short description |Unintended migration of marine species across the Suez Canal}}
-{{Use British English|date=October 2021}}
+{{Use British English |date=October 2021}}
-{{Use dmy dates|date=July 2022}}
+{{Use dmy dates |date=July 2022}}
-[[File:Canal de Suez.jpg|thumb|292x292px|The [[Suez Canal]], along which marine species migrate in the so-called '''Lessepsian migration''']]
+[[File:Canal de Suez.jpg |thumb |upright=1.5 |The [[Suez Canal]], along which marine species migrate from the [[Red Sea]] to the [[Mediterranean Sea]], in the original Lessepsian migration. The term is now more widely applied to migrations via any man-made structures.]]
-The '''Lessepsian migration''' (also called '''Erythrean invasion''') is the [[migration (ecology)|migration]] of marine species along the [[Suez Canal]], usually from the [[Red Sea]] to the [[Mediterranean Sea]], and more rarely in the opposite direction. When the canal was completed in 1869, [[fish]], [[crustacean]]s, [[mollusk]]s, and other marine animals and plants were exposed to an artificial passage between the two naturally separate bodies of water, and cross-contamination was made possible between formerly isolated [[ecosystem]]s. The phenomenon is still occurring today. It is named after [[Ferdinand de Lesseps]], the [[France|French]] diplomat in charge of the canal's construction.
+The '''Lessepsian migration''' (or '''Erythrean invasion''') is the [[migration (ecology) |migration]] of marine species along the [[Suez Canal]], usually from the [[Red Sea]] to the [[Mediterranean Sea]], and more rarely in the opposite direction. When the canal was completed in 1869, [[fish]], [[crustacean]]s, [[mollusk]]s, and other marine animals and plants were exposed to an artificial passage between the two naturally separate bodies of water, and cross-contamination was made possible between formerly isolated [[ecosystem]]s. The phenomenon is still occurring today. It is named after [[Ferdinand de Lesseps]], the [[France |French]] diplomat in charge of the canal's construction. The term was coined by Francis Dov Por in his 1978 book.<ref>{{cite book |last=Por |first=Francis Dov |title='Lessepsian Migration: The Influx of Red Sea Biota Into the Mediterranean by Way of the Suez Canal |date=1978 |publisher=Springer |isbn=978-3-540-08381-8 |series=Ecological studies |location=Berlin}}</ref>
-The migration of [[invasive species]] through the Suez Canal from the [[Indo-Pacific]] region has been facilitated by many factors, both [[Abiotic component|abiotic]] and [[human impact on the environment|anthropogenic]], and presents significant implications for the [[ecology|ecological]] health and economic stability of the contaminated areas; of particular concern is the fisheries industry in the [[Eastern Mediterranean]]. Despite these threats, the phenomenon has allowed scientists to study an invasive event on a large scale in a short period of time, which usually takes hundreds of years in natural conditions.
+The migration of [[invasive species]] through the Suez Canal from the [[Indo-Pacific]] region has been facilitated by many factors, both [[Abiotic component |abiotic]] and [[human impact on the environment |anthropogenic]], and presents significant implications for the [[ecology |ecological]] health and economic stability of the contaminated areas; of particular concern is the fisheries industry in the [[Eastern Mediterranean]]. Despite these threats, the phenomenon has allowed scientists to study an invasive event on a large scale in a short period of time, which usually takes hundreds of years in natural conditions.
-In a wider context, the term Lessepsian migration is also used to describe any animal migration facilitated by man-made structures, i.e. one which would not have occurred had it not been for the presence of an artificial structure.
+In a wider context, the term Lessepsian migration is used to describe any animal migration facilitated by [[man-made]] structures, i.e. migration which would not have occurred had it not been for the presence of an artificial structure.
 == Background ==
-[[File:SuezCanalElGuisr.jpg|thumb|upright=1.5|Construction of the Suez canal]]
+[[File:SuezCanalElGuisr.jpg |thumb |upright=1.5 |Construction of the Suez canal]]
-The opening of the Suez Canal created the first saltwater passage between the Mediterranean Sea and the Red Sea. Constructed in 1869 to provide a more direct trade route from Europe to India and the Far East, the canal is {{convert|162.5|km|mi|abbr=on}} long, with a depth of {{convert|10|–|15|m|ft|abbr=on}} and a width varying between {{convert|200|and|300|m|ft|abbr=on}}.<ref name=":0">{{cite journal |last=Golani |first=Daniel |title=Impact of Red Sea fish migrants through the Suez Canal on the aquatic environment of the Eastern Mediterranean |journal=Bulletin Series Yale School of Forestry and Environmental Studies |issue=103 |year=1998 |pages=375–387}}</ref>
+The opening of the Suez Canal created the first saltwater passage between the Mediterranean Sea and the Red Sea. Constructed in 1869 to provide a more direct trade route from [[Europe]] to [[India]] and the [[Far East]], the canal is {{convert |162.5 |km |mi |abbr=on}} long, with a depth of {{convert |10 |– |15 |m |ft |abbr=on}} and a width varying between {{convert |200 |and |300 |m |ft |abbr=on}}.<ref name=":0">{{cite journal |last=Golani |first=Daniel |title=Impact of Red Sea fish migrants through the Suez Canal on the aquatic environment of the Eastern Mediterranean |journal=Bulletin Series Yale School of Forestry and Environmental Studies |issue=103 |year=1998 |pages=375–387}}</ref>
-Because the surface of the Red Sea is slightly higher in elevation than the Eastern Mediterranean, the canal serves as a [[tidal strait]] by which Red Sea water pours into the Mediterranean. The [[Bitter Lakes]], which are natural [[hypersaline lake]]s that form part of the canal, blocked the migration of Red Sea species into the Mediterranean for many decades, but as the [[salinity]] of the lakes gradually equalized with that of the Red Sea, the barrier to migration was removed, and plants and animals from the Red Sea have begun to colonize the eastern Mediterranean.<ref name="Madl" /> The Red Sea, an extension of the [[Indian Ocean]], is generally saltier and less nutrient-rich than the Mediterranean, an extension of the [[Atlantic Ocean]], so Red Sea species, able to tolerate harsh environments, have advantages over Atlantic species in the conditions of the Eastern Mediterranean. Accordingly, most migrations between the two bodies of water are invasions of Red Sea species into the Mediterranean, and relatively few migrations occur in the opposite direction. The construction of the [[Aswan High Dam]] across the [[Nile River]] in the 1960s reduced the inflow of fresh water and nutrient-rich silt from the Nile into the eastern Mediterranean, making conditions in the eastern Mediterranean even more like those of the Red Sea, thereby increasing the impact of the invasions and facilitating the occurrence of new ones.<ref name="Madl" />
+Because the surface of the Red Sea is slightly higher in elevation than the eastern Mediterranean, the canal serves as a [[tidal strait]] by which Red Sea water pours into the Mediterranean. The [[Bitter Lakes]], which are natural [[hypersaline lake]]s that form part of the canal, blocked the migration of Red Sea species into the Mediterranean for many decades, but as the [[salinity]] of the lakes gradually equalized with that of the Red Sea, the barrier to migration was removed, and plants and animals from the Red Sea began to colonize the eastern Mediterranean.<ref name="Madl" /> The Red Sea, an extension of the [[Indian Ocean]], is generally saltier and less nutrient-rich than the Mediterranean, an extension of the [[Atlantic Ocean]], so Red Sea species, able to tolerate harsh environments, have advantages over Atlantic species in the conditions of the Eastern Mediterranean. Accordingly, most migrations between the two bodies of water are invasions of Red Sea species into the Mediterranean, and relatively few migrations occur in the opposite direction. The construction of the [[Aswan High Dam]] across the [[Nile River]] in the 1960s reduced the inflow of fresh water and nutrient-rich silt from the Nile into the eastern Mediterranean, making conditions in the eastern Mediterranean even more like those of the Red Sea, thereby increasing the impact of the invasions and facilitating the occurrence of new ones.<ref name="Madl" />
-The Red Sea is a profusely abundant tropical marine environment sharing species in common with the eastern Indo-Pacific region, while the Mediterranean is a temperate sea with much lower productivity; the two ecosystems are extremely different in terms of structure and ecology.<ref name=":0" /> The Suez Canal quickly became the main pathway for the introduction of invasive species into the Eastern Mediterranean, having zoogeographic and ecological consequences far beyond what the designers could foresee. The Lessepsian migration includes hundreds of Red Sea and Indo-Pacific species that have colonized and established themselves in the Eastern Mediterranean system, causing [[biogeography|biogeographic]] changes without precedent in human memory.<ref name="Galil 973–976">{{Cite journal |last1=Galil |first1=Bella S. |last2=Boero |first2=Ferdinando |last3=Campbell |first3=Marnie L. |last4=Carlton |first4=James T. |last5=Cook |first5=Elizabeth |last6=Fraschetti |first6=Simonetta |last7=Gollasch |first7=Stephan |last8=Hewitt |first8=Chad L. |last9=Jelmert |first9=Anders |date=2015-04-01 |title='Double trouble': the expansion of the Suez Canal and marine bioinvasions in the Mediterranean Sea |journal=Biological Invasions |language=en |volume=17 |issue=4 |pages=973–976 |doi=10.1007/s10530-014-0778-y |issn=1387-3547 |doi-access=free |bibcode=2015BiInv..17..973G |hdl=10261/113660 |hdl-access=free}}</ref> The trend is accelerating: to take just the fish, a long-term cross-Basin survey engaged by the [[Mediterranean Science Commission]] recently documented that in the first twenty years of our century more exotic fish species from the Indo-Pacific Ocean had reached the Mediterranean than during the entire 20th century.<ref>Atlas of Exotic Fishes in the Mediterranean Sea. 2nd Edition. 2021. (Briand, Frederic, Ed.) CIESM Publishers, Paris, Monaco 366 p.[https://ciesm.org/catalog/index.php?article=2021]</ref>
+The Red Sea is a profusely abundant tropical marine environment sharing species in common with the eastern [[Indo-Pacific |Indo-Pacific region]], while the Mediterranean is a [[Temperate climate |temperate]] sea with much lower productivity; the two ecosystems are extremely different in terms of structure and ecology.<ref name=":0" /> The Suez Canal quickly became the main pathway for the introduction of [[invasive species]] into the Eastern Mediterranean, having [[Zoogeography |zoogeographic]] and ecological consequences far beyond what the designers foresaw. The Lessepsian migration includes hundreds of Red Sea and Indo-Pacific species that have colonized and established themselves in the Eastern Mediterranean system, causing [[biogeography |biogeographic]] changes without precedent in human memory.<ref name="Galil 973–976">{{Cite journal |last1=Galil |first1=Bella S. |last2=Boero |first2=Ferdinando |last3=Campbell |first3=Marnie L. |last4=Carlton |first4=James T. |last5=Cook |first5=Elizabeth |last6=Fraschetti |first6=Simonetta |last7=Gollasch |first7=Stephan |last8=Hewitt |first8=Chad L. |last9=Jelmert |first9=Anders |date=2015-04-01 |title='Double trouble': the expansion of the Suez Canal and marine bioinvasions in the Mediterranean Sea |journal=Biological Invasions |language=en |volume=17 |issue=4 |pages=973–976 |doi=10.1007/s10530-014-0778-y |issn=1387-3547 |doi-access=free |bibcode=2015BiInv..17..973G |hdl=10261/113660 |hdl-access=free}}</ref> The trend is accelerating: to take just the fish, a long-term cross-Basin survey engaged by the [[Mediterranean Science Commission]] recently documented that in the first twenty years of our century more fish species from the [[Indo-Pacific Ocean]] had reached the Mediterranean than during the entire 20th century.<ref>Atlas of Exotic Fishes in the Mediterranean Sea. 2nd Edition. 2021. (Briand, Frederic, Ed.) CIESM Publishers, Paris, Monaco 366 p.[https://ciesm.org/catalog/index.php?article=2021]</ref>
-To this day, one can estimate at over 1,000 the number of species - both vertebrates and invertebrates - native to the Red Sea that have been identified in the Mediterranean Sea. Many others are as yet unidentified. From there they have spread even further afield, supplying 95% of [[Indo-Pacific]] species that have reached the [[Ponto-Caspian]] seas and increasingly rapidly.<ref name="Shiganova-2010">{{cite journal | last=Shiganova | first=Tamara | title=Biotic Homogenization of Inland Seas of the Ponto-Caspian | journal=[[Annual Review of Ecology, Evolution, and Systematics]] | publisher=[[Annual Reviews (publisher)|Annual Reviews]] | volume=41 | issue=1 | date=2010-12-01 | issn=1543-592X | doi=10.1146/annurev.ecolsys.110308.120148 | pages=103–125}}</ref> In the late 20th and early 21st centuries, the [[Egypt]]ian government announced its intentions to deepen and widen the canal, which raised concerns from [[marine biologist]]s, fearing this would facilitate the crossing of the canal for additional species, accelerating the invasion of Red Sea species into the Mediterranean.<ref>Galil, B. S. and Zenetos, A. (2002). A sea change: exotics in the eastern Mediterranean Sea, in: Leppäkoski,{{nbsp}}E. et{{nbsp}}al. (2002). ''Invasive aquatic species of Europe: distribution, impacts and management''. pp. 325–36.</ref> The extension was completed in 2015.
+As of about 2010, over 1,000 species — both [[Vertebrate |vertebrates]] and [[Invertebrate |invertebrates]] — native to the Red Sea had been identified in the Mediterranean Sea. It was thought that many others were as yet unidentified. From there they have spread even further afield, supplying 95% of [[Indo-Pacific]] species that have reached the [[Ponto-Caspian]] seas and increasingly rapidly.<ref name="Shiganova-2010">{{cite journal |last=Shiganova |first=Tamara |title=Biotic Homogenization of Inland Seas of the Ponto-Caspian |journal=[[Annual Review of Ecology, Evolution, and Systematics]] |publisher=[[Annual Reviews (publisher) |Annual Reviews]] |volume=41 |issue=1 |date=2010-12-01 |issn=1543-592X |doi=10.1146/annurev.ecolsys.110308.120148 |pages=103–125}}</ref> In the late 20th and early 21st centuries, the [[Egypt]]ian government announced its intentions to deepen and widen the canal, which raised concerns from [[marine biologist]]s, fearing this would facilitate the crossing of the canal for additional species, accelerating the invasion of Red Sea species into the Mediterranean.<ref>Galil, B. S. and Zenetos, A. (2002). A sea change: exotics in the eastern Mediterranean Sea, in: Leppäkoski,{{nbsp}}E. et{{nbsp}}al. (2002). ''Invasive aquatic species of Europe: distribution, impacts and management''. pp. 325–36.</ref> The extension was completed in 2015.
-==Ecological impacts==
+== Ecological impacts ==
-===Outcompetition of natives===
-[[File:Fistularia commersonii1.jpg|thumb|upright=1.2|''[[Fistularia commersonii]]'', a Lessepsian migrant<ref>{{cite journal|url=http://www.mba.ac.uk/jmba/pdf/6123.pdf|archive-url=https://web.archive.org/web/20110721043458/http://www.mba.ac.uk/jmba/pdf/6123.pdf|archive-date=2011-07-21|title=New records of the lessepsian fish ''Fistularia commersonii'' (Osteichthyes: Fistulariidae) from the central Tyrrhenian Sea: signs of an incoming colonization? |first1=P.N. |last1=Psomadakis |first2=U. |last2=Scacco |first3=I. |last3=Consalvo |first4=M. |last4=Bottaro |first5=F. |last5=Leone |first6=M. |last6=Vacchi| journal=JMBA2 Biodiversity Records|date=2 February 2008 }}</ref>]]
+=== Outcompetition of natives ===
-====Native ''Argyrosomus regius'' vs. invasive ''Scomberomorus commerson''====
-A wide-ranging species in the eastern Atlantic and Mediterranean, the meagre ''[[Argyrosomus regius]]'' is a species [[indigenous (ecology)|indigenous]] to the Eastern Mediterranean and was one of the most common commercial fish in the [[Levant]]. However, this species has since disappeared from local catches, while the [[narrow-barred Spanish mackerel]] ''Scomberomorus commerson'', a known Lessepsian migrant, has dramatically increased in population. Studies performed on this occurrence conclude that, due to similar life histories and diets, this may be an example of an invasive migrant outcompeting a native species and occupying its [[niche (ecology)|niche]].<ref name="Galil 973–976"/>
+[[File:Fistularia commersonii1.jpg |thumb |upright=1.2 |''[[Fistularia commersonii]]'', a Lessepsian migrant<ref>{{cite journal |url=http://www.mba.ac.uk/jmba/pdf/6123.pdf |archive-url=https://web.archive.org/web/20110721043458/http://www.mba.ac.uk/jmba/pdf/6123.pdf |archive-date=2011-07-21 |title=New records of the lessepsian fish ''Fistularia commersonii'' (Osteichthyes: Fistulariidae) from the central Tyrrhenian Sea: signs of an incoming colonization? |first1=P.N. |last1=Psomadakis |first2=U. |last2=Scacco |first3=I. |last3=Consalvo |first4=M. |last4=Bottaro |first5=F. |last5=Leone |first6=M. |last6=Vacchi |journal=JMBA2 Biodiversity Records |date=2 February 2008 }}</ref>]]
-====Native ''Melicertus kerathurus'' vs. invasive prawns====
-Eight species of invasive [[prawn]]s from the [[Erythraean Sea]] have been recorded in the Eastern Mediterranean. These prawns are considered highly prized in [[The Levant|Levantine]] fisheries, and compose most of the prawn catch off the Mediterranean coast of Egypt, being 6% of total Egyptian landings. However, this high abundance of invasive prawns has led to the decline of a native penaeid prawn, ''[[Melicertus kerathurus]]'', which supported a commercial Israeli fishery throughout the 1950s. Due to outcompetition and its habitat being overrun by these migrants, this native species has since disappeared, with resultant detrimental impacts on the commercial fishery.<ref name=":12"/>
+==== Native ''Argyrosomus regius'' vs. invasive ''Scomberomorus commerson'' ====
-===Parasitic invaders===
-The invasion of new Red Sea species into the Mediterranean has also facilitated the invasion of their associated parasites, for example the [[copepod]] ''[[Eudactylera aspera]]'', which was found on a spinner shark, ''[[Carcharhinus brevipinna]]'', taken off the coast of [[Tunisia]]. The copepod had originally been described from specimens taken from ''C. brevipinna'' off [[Madagascar]] and its finding in the Mediterranean has arguably confirmed the previously disputed status of ''C. brevipinna'' as a Lessepsian migrant. In addition, parasites originating in the Red Sea have shown an ability to use related native Mediterranean fish species as alternative [[host (biology)|hosts]]; e.g. the copepod ''[[Nipergasilus bora]]'' was known to parasitise the grey mullets ''[[Mugil cephalus]]'' and ''[[Liza carinata]]'' in the Red Sea, both taxa having been recorded as Lessepsian migrants, and was subsequently found parasitising the native Mediterranean mullets ''[[Golden grey mullet|Chelon aurata]]'' and ''[[Chelon labrosus]]''.<ref name = "di Castri">{{cite book | editor1 = F. di Castri | editor2 = A.J. Hansen | editor3 = M Debussche | year = 2012 | title = Biological Invasions in Europe and the Mediterranean Basin Volume 65 of Monographiae Biologicae| publisher = Springer Science & Business Media | page = 300 | chapter = 18. Human activities and modifications of ichtyofauna of the Mediterranean Sea: effects on parasitosis | author1 = C. Maillard | author2 = A. Raibaut | isbn = 978-9400918764}}</ref>
+A wide-ranging species in the eastern Atlantic and Mediterranean, the meagre ''[[Argyrosomus regius]]'' is a species [[indigenous (ecology) |indigenous]] to the Eastern Mediterranean and was one of the most common commercial fish in the [[Levant]]. It has since disappeared from local catches, while the [[narrow-barred Spanish mackerel]] ''Scomberomorus commerson'', a known Lessepsian migrant, has dramatically increased in population. Studies performed on this occurrence conclude that, due to similar life histories and diets, this may be an example of an invasive migrant outcompeting a native species and occupying its [[niche (ecology) |niche]].<ref name="Galil 973–976"/>
-Sometimes, the invasion of these parasites may have the effect of reducing the competitive advantages that Red Sea invaders have in the Mediterranean. For example, the Indo-Pacific swimming crab ''[[Charybdis longicollis]]'' was first recorded in the Mediterranean in the mid-1950s and became dominant in silty and sandy substrates off the coast of Israel, making up to 70% of the total [[biomass]] in these habitats. Until 1992, none of the specimens collected was infected with the parasite ''[[Heterosaccus dollfusi]]'', but in that year, a few infected crabs were collected. The parasite is a [[barnacle]] which [[parasitic castration|desexes its host]]. Within three years, the parasite had spread to southern [[Turkey]] and 77% of the crabs collected in [[Haifa Bay]] were infected. This rapid increase and high infection rate is attributed to the extremely high population density of the host and the year-round reproduction of the parasite. One effect of this was that the population of the Mediterranean native swimming crab ''[[Liocarcinus vernalis]]'' recovered somewhat.<ref name = Galil>{{cite book | author = Bella S. Galil | editor = J. Carel von Vaupel Klein | year = 2000 | title = The Biodiversity Crisis and Crustacea – Proceedings of the Fourth International Crustacean Congress Crustacean Issues | chapter = Lessepsian immigration: Human impact on Leventine Biogeography | publisher = CRC Press | pages = 50–51}}</ref>
+==== Native ''Melicertus kerathurus'' vs. invasive prawns ====
-===Species displacements===
-[[Fishery|Fisheries]] have been heavily affected. The goldband goatfish, ''[[Upeneus moluccensis]]'', was first recorded in the Eastern Mediterranean in the 1930s and has since established an abundant population. Following the warm winter of 1954–1955, it increased to 83% of the Israeli catch, replacing the native [[red mullet]], which also affected the Egyptian fishery, being 3% of their total landings.<ref>{{Cite web|url=http://www.fao.org/docrep/009/a0477e/a0477e0i.htm#bm18|title=Review of the state of world marine capture fisheries management: Indian Ocean.|website=www.fao.org|access-date=2017-11-28}}</ref> The high water temperatures of this unusually warm winter may have resulted in the poor survival of red mullet juveniles, which may have allowed the [[goatfish]] population to expand into the opened niche.<ref name=":12">{{Cite journal|last=Galil|first=B. S.|date=2007-01-01|title=Loss or gain? Invasive aliens and biodiversity in the Mediterranean Sea|journal=Marine Pollution Bulletin|series=Marine Bioinvasions: A collection of reviews|volume=55|issue=7|pages=314–322|doi=10.1016/j.marpolbul.2006.11.008|pmid=17222869|bibcode=2007MarPB..55..314G }}</ref> Native mullet have since been displaced into deeper, cooler waters, where Lessepsian migrants consist of only 20% of the catch, whereas in shallower, warmer waters, this invasive species takes up a staggering 87% of the catch.<ref name=":12"/> From these data, the Lessepsian migrants apparently have not adapted to the more temperate environment of the deeper areas of the basin, but have established dominant populations in the habitats most similar to the tropical sea habitats from which they came. The population of ''[[Caesio varilineata]]'' (a fusilier fish, Caesionidae), recently reported from the eastern [[Mediterranean Sea]],<ref>{{cite journal|author= Bos A.R. & J. Ogwang |year=2018 |title= ''Caesio varilineata'' Carpenter, 1987 (Osteichthyes: Caesionidae) a new alien fish in the southeastern Mediterranean Sea |journal= BioInvasions Records |volume=7 |issue=4 |pages=441–445 |url=https://www.reabic.net/journals/bir/2018/4/BIR_2018_Bos_Ogwang.pdf | doi= 10.3391/bir.2018.7.4.15|doi-access=free }}</ref> may develop in a similar fashion. {{As of|2006}} along the Mediterranean coast of Israel, over half of [[trawl fishing|trawl catches]] are Lessepsians. Worse, full substitution has not occurred {{endash}} total fishery productivity has also been decreased by the invaders.<ref name="Sala-Knowlton-2006">{{cite journal | last1=Sala | first1=Enric | last2=Knowlton | first2=Nancy | title=Global Marine Biodiversity Trends | journal=[[Annual Review of Environment and Resources]] | publisher=[[Annual Reviews (publisher)|Annual Reviews]] | volume=31 | issue=1 | date=2006-11-01 | issn=1543-5938 | doi=10.1146/annurev.energy.31.020105.100235 | pages=93–122| doi-access=free }}</ref>
+Eight species of invasive [[prawn]]s from the [[Erythraean Sea]] have been recorded in the Eastern Mediterranean. These prawns are considered highly prized in [[The Levant |Levantine]] fisheries, and compose most of the prawn catch off the Mediterranean coast of Egypt, being 6% of total Egyptian landings. This high abundance of invasive prawns has led to the decline of a native penaeid prawn, ''[[Melicertus kerathurus]]'', which supported a commercial Israeli fishery throughout the 1950s. Due to outcompetition and its habitat being overrun by these migrants, this native species has since disappeared, with resultant detrimental impacts on the commercial fishery.<ref name=":12"/>
-===Food web phase shift===
-The marbled spinefoot (''[[Siganus rivulatus]]'') and dusky spinefoot (''[[Siganus luridus]]''), both [[indigenous (ecology)|indigenous]] Red Sea [[rabbitfish]], were first recorded off the coast of Mandate Palestine in 1924. In only a few decades, these schooling, herbivorous fish were able to settle in a range of habitats forming abundant populations, to the extent that George and Athanassiou, in a paper published in 1967, reported: "The millions of young abound over rocky outcropping grazing on the relatively abundant early summer [[algae|algal]] cover".<ref>{{Cite journal|last1=C.J.|first1=George|last2=V.|first2=Athanassiou|date=1967|title=A two year study of the fishes appearing in the seine fishery of St. George Bay, Lebanon|url=http://www.vliz.be/en/imis?module=ref&refid=259230|journal=Annali del Museo Civico di Storia Naturale Giacomo Doria}}</ref> By 2004, a study on these species found that they comprise 80% of the abundance of herbivorous fish in the shallow coastal sites of [[Lebanon]].<ref name=":12"/> They have been able to create marked phase shifts within the food web on multiple levels. Prior to the arrival of these Lessepsian migrants, the herbivores filled a small ecological role within the [[Eastern Mediterranean]] system. Therefore, with such a high influx of herbivorous species in a small period of time, this phenomenon has normalised the [[food web]], increasing the rate at which algae are consumed and serving as a major prey item for large predators.<ref name=":12" /> Not only are these Red Sea migrants having a huge impact on this ecosystem, they also are affecting fisheries, as well, by outcompeting native fish of high commercial value, such as the seabream ''[[Boops boops]]''.<ref name=":12" /> A [[Introduced species|nonindigenous species]] of mussel – ''[[Brachidontes pharaonis]]'' – from the Indo-Pacific has also proliferated. This mussel, which has a thicker shell than that of the native mussel, has created a change in predation patterns, as well, since they are more difficult to consume.<ref name=":12" />
+=== Parasitic invaders ===
-==Anti-Lessepsian migration==
-[[File:Dicentrarchus labrax011.JPG|thumb|European seabass: one of the few anti-Lessepsian migrants]]
+The invasion of new Red Sea species into the Mediterranean has facilitated the invasion of their associated parasites, for example the [[copepod]] ''[[Eudactylera aspera]]'', which was found on a spinner shark, ''[[Carcharhinus brevipinna]]'', taken off the coast of [[Tunisia]]. The copepod had originally been described from specimens taken from ''C. brevipinna'' off [[Madagascar]] and its finding in the Mediterranean has arguably confirmed the previously disputed status of ''C. brevipinna'' as a Lessepsian migrant. In addition, parasites originating in the Red Sea have shown an ability to use related native Mediterranean fish species as alternative [[host (biology) |hosts]]; e.g. the copepod ''[[Nipergasilus bora]]'' was known to parasitise the grey mullets ''[[Mugil cephalus]]'' and ''[[Liza carinata]]'' in the Red Sea, both taxa having been recorded as Lessepsian migrants, and was subsequently found parasitising the native Mediterranean mullets ''[[Golden grey mullet |Chelon aurata]]'' and ''[[Chelon labrosus]]''.<ref name="di Castri">{{cite book |editor1=F. di Castri |editor2=A.J. Hansen |editor3=M Debussche |year=2012 |title=Biological Invasions in Europe and the Mediterranean Basin Volume 65 of Monographiae Biologicae |publisher=Springer Science & Business Media |page=300 |chapter=18. Human activities and modifications of ichtyofauna of the Mediterranean Sea: effects on parasitosis |first1=C. |last1=Maillard |first2= A. |last2=Raibaut |isbn=978-9400918764}}</ref>
-Only a comparatively few species have colonised the Red Sea from the Mediterranean, and these are referred to as anti-Lessepsian migrants. As the predominant flow of the canal is from south to north, this acts against the southward movement of Mediterranean species, and as stated above, the Red Sea has higher salinity, fewer nutrients, and a much more diverse biota than the Eastern Mediterranean. Some of the anti-Lessepsian migrants such as the [[sea star]] ''[[Sphaerodiscus placenta]]'' are found only in specialised habitats such as the lagoon of El{{nbsp}}Bilaiyim, which lies {{convert|180|km|abbr=on}} south of the southern entrance to the Suez Canal, but is much more saline than the surrounding waters of the [[Gulf of Suez]].<ref name = Madl>{{cite web | url = http://biophysics.sbg.ac.at/lm/lesseps.htm | title = Essay about the phenomenon of Lessepsian Migration | access-date = 29 December 2016 | publisher = Pierre Madl|work = Colloquial Meeting of Marine Biology I}}</ref>
+Sometimes, the invasion of parasites may reduce the competitive advantages that Red Sea invaders have in the Mediterranean. For example, the Indo-Pacific swimming crab ''[[Charybdis longicollis]]'' was first recorded in the Mediterranean in the mid-1950s and became dominant in silty and sandy substrates off the coast of Israel, making up to 70% of the total [[biomass]] in these habitats. Until 1992, none of the specimens collected was infected with the parasite ''[[Heterosaccus dollfusi]]'', but in that year, a few infected crabs were collected. The parasite is a [[barnacle]] which [[parasitic castration |desexes its host]]. Within three years, 77% of the crabs collected in [[Haifa Bay]] were infected, and the parasite had spread to southern [[Turkey]]. This rapid increase and high infection rate is attributed to the extremely high population density of the host and the year-round reproduction of the parasite. One effect of this was that the population of the Mediterranean native swimming crab ''[[Liocarcinus vernalis]]'' recovered somewhat.<ref name=Galil>{{cite book |first=Bella S. |last=Galil |editor=J. Carel von Vaupel Klein |year=2000 |title=The Biodiversity Crisis and Crustacea – Proceedings of the Fourth International Crustacean Congress Crustacean Issues |chapter=Lessepsian Immigration: Human impact on Leventine Biogeography |publisher=CRC Press |pages=50–51}}</ref>
-The [[sea slug]] ''[[Biuve fulvipunctata]]'' was originally described from waters around Japan and is widespread in the eastern Indian Ocean and western Pacific. It was first identified in the Mediterranean in 1961, and was seen in the Red Sea in 2005, most likely as a result of anti-Lessepsian migration.<ref name = Malaquias>{{cite journal |last1=Malaquias |first1=Manuel |last2=Zamora-Silva |first2=Andrea |last3=Vitale |first3=Dyana |last4=Spinelli |first4=Andrea |last5=De Matteo |first5=Sergio |last6=Giacobbe |first6=Salvatore |last7=Ortigosa |first7=Deneb |last8=Cervera |first8=Juan |title=The Suez Canal as a revolving door for marine species: a reply to Galil et al. (2016) |journal=Aquatic Invasions |date=2017 |volume=12 |issue=1 |pages=1–4 |doi=10.3391/ai.2017.12.1.01|doi-access=free |hdl=2066/177049 |hdl-access=free }}</ref> Among the fish species that have been confirmed as anti-Lessepsian migrants are [[peacock blenny]] (''Salaria pavo''),<ref name = iucn>{{cite iucn | author1 = Antonio Di Natale | author2 = Murat Bilecenoglu | author3 = Michel Bariche | author4 = Can Bizsel | author5 = Enric Massuti | author6 = Jeffrey Williams | author7 =  Matthew Craig | display-authors = 3 | year = 2014 | title = ''Salaria pavo'' | volume = 2014 | page = e.T185175A1776635 | doi = 10.2305/IUCN.UK.2014-3.RLTS.T185175A1776635.en }}</ref> ''[[Solea aegyptiaca]]'', [[Mediterranean moray]] (''Muraena helena''), the [[rock goby]] (''Gobius paganellus''),<ref name = MSIP>{{cite web | url = http://species-identification.org/species.php?species_group=fnam&id=1615 | title = Fishes of the NE Atlantic and the Mediterranean Rock goby (''Gobius paganellus'') | access-date = 1 September 2018 | publisher = Marine Species Identification Portal | editor = J.C. Hureau}}</ref> the meagre (''[[Argyrosomus regius]]''),<ref name = Fishbase>{{cite web | url = http://www.fishbase.org/summary/418 | title = Argyrosomus regius (Asso, 1801) | access-date = 26 December 2016 | publisher = Fishbase.org}}</ref> the [[Comber (fish)|comber]] (''Serranus cabrilla''),<ref name = Bos2020>{{cite journal | author1 = Arthur R. Bos| author2 = Joel Ogwang | author3 = Michel Bariche | author4 = Mizuki Horoiwa | author5 = Menna Megahed | author6 = Amged Ouf | author7 = Nina Yasuda |year = 2020 | title = Anti-Lessepsian migration rectified: the Comber ''Serranus cabrilla'' (L. 1758) existed in the Red Sea prior to the Suez Canal opening | url = https://link.springer.com/article/10.1007/s00227-020-03748-0 | journal = Marine Biology | volume = 167 | issue = 126 | pages = 1–10| doi = 10.1007/s00227-020-03748-0 | bibcode = 2020MarBi.167..126B | s2cid = 225432110 }}</ref> [[European seabass]] (''Dicentrarchus labrax''), and [[spotted seabass]] (''Dicentrarchus punctatus'').<ref name = Chanet>{{cite journal | author1 = Bruno Chanet| author2 = Martine Desoutter-Meniger | author3 = Sergey V. Bogorodsky | year = 2012 | title = Range extension of Egyptian sole ''Solea aegyptiaca'' (Soleidae: Pleuronectiformes), in the Red Sea | url = http://sfi.mnhn.fr/cybium/numeros/2012/364/17-Chanet764N.pdf | journal = Cybium | volume = 36 | issue = 4 | pages = 581–584}}</ref>[[File:Chelidonura fulvipunctata.JPG|thumb|''Biuve fulvipunctata'']]
+=== Species displacements ===
-==Factors facilitating Lessepsian migrant colonisation and expansion==
-{{unreferenced section|date=March 2024}}
+[[Fishery|Fisheries]] have been heavily affected. The goldband goatfish, ''[[Upeneus moluccensis]]'', was first recorded in the Eastern Mediterranean in the 1930s and has since established an abundant population. Following the warm winter of 1954–1955, it increased to 83% of the Israeli catch, replacing the native [[red mullet]], which affected the Egyptian fishery, being 3% of their total landings.<ref>{{Cite web |url=http://www.fao.org/docrep/009/a0477e/a0477e0i.htm#bm18 |title=Review of the state of world marine capture fisheries management: Indian Ocean. |publisher=Food and Agriculture Organization |access-date=2017-11-28}}</ref> The high water temperatures of this unusually warm winter may have resulted in the poor survival of red mullet juveniles, which may have allowed the [[goatfish]] population to expand into the opened niche.<ref name=":12">{{Cite journal |last=Galil |first=B. S. |date=2007-01-01 |title=Loss or gain? Invasive aliens and biodiversity in the Mediterranean Sea |journal=Marine Pollution Bulletin |series=Marine Bioinvasions: A collection of reviews |volume=55 |issue=7 |pages=314–322 |doi=10.1016/j.marpolbul.2006.11.008 |pmid=17222869 |bibcode=2007MarPB..55..314G }}</ref> Native mullet have since been displaced into deeper, cooler waters, where Lessepsian migrants consist of only 20% of the catch, whereas in shallower, warmer waters, this invasive species takes up 87% of the catch.<ref name=":12"/> From these data, the Lessepsian migrants apparently have not adapted to the more temperate environment of the deeper areas of the basin, but have established dominant populations in the habitats most similar to the tropical sea habitats from which they came. The population of ''[[Caesio varilineata]]'' (a fusilier fish, Caesionidae), recently reported from the eastern [[Mediterranean Sea]],<ref>{{cite journal |last1=Bos |first1=A.R. |first2=J. |last2=Ogwang |year=2018 |title= ''Caesio varilineata'' Carpenter, 1987 (Osteichthyes: Caesionidae) a new alien fish in the southeastern Mediterranean Sea |journal= BioInvasions Records |volume=7 |issue=4 |pages=441–445 |url=https://www.reabic.net/journals/bir/2018/4/BIR_2018_Bos_Ogwang.pdf |doi= 10.3391/bir.2018.7.4.15 |doi-access=free }}</ref> may develop in a similar fashion. {{As of |2006}} along the Mediterranean coast of Israel, over half of [[trawl fishing|trawl catches]] are Lessepsians. Worse, full substitution has not occurred {{endash}} total fishery productivity has been reduced by the invaders.<ref name="Sala-Knowlton-2006">{{cite journal |last1=Sala |first1=Enric |last2=Knowlton |first2=Nancy |title=Global Marine Biodiversity Trends |journal=[[Annual Review of Environment and Resources]] |publisher=[[Annual Reviews (publisher)|Annual Reviews]] |volume=31 |issue=1 |date=2006-11-01 |issn=1543-5938 |doi=10.1146/annurev.energy.31.020105.100235 |pages=93–122 |doi-access=free }}</ref>
-=== Aswan Dam===
+=== Food web phase shift ===
-Impact of Lessepsian migrants on system may be heavier due to a major [[Human impact on the environment|anthropogenic factor]]: the construction of the [[Aswan Dam]]. Before construction, the [[Nile River]] was able to deeply influence the marine environment of the Eastern Mediterranean, discharging a high tonnage of nutrient-rich water. This resulted in a high abundance of phytoplankton in the delta which had a beneficial influence on the productivity in the surrounding sea, and attracted large schools of sardines, resulting in a highly lucrative commercial fishery. After the dam's completion in 1964, this dumping of nutrients into the Mediterranean diminished, and with it this productivity, leading to a sharp decrease in fish populations, namely sardines, which ultimately led to the collapse of the [[sardine]] fishery. As a result, the Egyptian purse-seine fishing industry today takes only 10% of the pre-dam catch, although this may also be due to the influence of dispersion of the Red Sea invasives. The freshwater discharge of the Nile could have been a natural barrier for some of the migrants in their movement into the Eastern Mediterranean.
+The marbled spinefoot (''[[Siganus rivulatus]]'') and dusky spinefoot (''[[Siganus luridus]]''), both [[indigenous (ecology)|indigenous]] Red Sea [[rabbitfish]], were first recorded off the coast of Mandate Palestine in 1924. In only a few decades, these schooling, herbivorous fish were able to settle in a range of habitats forming abundant populations, to the extent that George and Athanassiou, in a paper published in 1967, reported: "The millions of young abound over rocky outcropping grazing on the relatively abundant early summer [[algae |algal]] cover".<ref>{{Cite journal |last1=C.J. |first1=George |last2=V. |first2=Athanassiou |date=1967 |title=A two year study of the fishes appearing in the seine fishery of St. George Bay, Lebanon |url=http://www.vliz.be/en/imis?module=ref&refid=259230 |journal=Annali del Museo Civico di Storia Naturale Giacomo Doria}}</ref> By 2004, a study on these species found that they comprise 80% of the abundance of herbivorous fish in the shallow coastal sites of [[Lebanon]].<ref name=":12"/> They have been able to create marked phase shifts within the food web on multiple levels. Prior to the arrival of these Lessepsian migrants, the herbivores filled a small ecological role within the [[Eastern Mediterranean]] system. Therefore, with such a high influx of herbivorous species in a small period of time, this phenomenon has normalised the [[food web]], increasing the rate at which algae are consumed and serving as a major prey item for large predators.<ref name=":12" /> Further, these Red Sea migrants are affecting fisheries by outcompeting native fish of high commercial value, such as the seabream ''[[Boops boops]]''.<ref name=":12" /> A [[Introduced species |nonindigenous species]] of mussel – ''[[Brachidontes pharaonis]]'' – from the Indo-Pacific has also proliferated. This mussel, which has a thicker shell than that of the native mussel, has created a change in predation patterns, since they are more difficult for predators to handle.<ref name=":12" />
-===Climate change===
+== Anti-Lessepsian migration ==
-With climate change and the warming of seawater temperature, the [[Thermophile|thermophilic]] Lessepsian migrants may find it easier to reproduce, grow, and survive and give them a distinct advantage over native temperate Mediterranean taxa. Both processes, [[global warming]] and the influx of Lessepsian migrants, may impact the already teetering fisheries there by displacing commercially important native species, causing a phase shift in coastal ecosystems and changing seascape patterns. Furthermore, deepening of the warm surface layer is causing massive mortalities of organisms that do not tolerate high temperatures. Through various studies, species have been shown to be now restricted to deeper levels and thrive for shorter periods than in the past. Climate change is also another stressor on this system, the decline of natural barriers that were once in place to prevent many Red Sea natives from migrating to the Mediterranean. Due to global warming, the Eastern Mediterranean is experiencing an increase in temperature and salinity, which is decreasing the hydrological barrier between the two seas, favoring the migrants from the tropic Indo-Pacific which have a warm-water affinity and causing mortality in the temperate Eastern Mediterranean natives. The [[Bitter Lakes]] created a natural salinity barrier within the Suez Canal due to their high deposits of salt, preventing many species from migrating. However, due to the freshening of these lakes, this natural barrier is weakening, allowing a higher migration of invasive species.
+[[File:Dicentrarchus labrax011.JPG |thumb |European seabass: one of the few anti-Lessepsian migrants]]
-==Other examples==
-===North America===
-The [[sea lamprey]] reached [[Lake Ontario]] from the Atlantic Ocean through shipping canals and was recorded for the first time in Lake Ontario in the 1830s, but [[Niagara Falls]] was a barrier to their further spread. The deepening of the [[Welland Canal]] in 1919 allowed the sea lamprey to bypass the barrier created by the falls, and by 1938, sea lampreys had been recorded in all of the [[Great Lakes]].<ref name = MSG>{{cite web | url = http://www.seagrant.umn.edu/ais/sealamprey_battle | title = Sea Lamprey: The Battle Continues | access-date = 29 December 2016 | publisher = Regents of the University of Minnesota}}</ref>
+Only a comparatively few species have colonised the Red Sea from the Mediterranean; these are called anti-Lessepsian migrants. As the predominant flow of the canal is from south to north, this acts against the southward movement of Mediterranean species, and as stated above, the Red Sea has higher salinity, fewer nutrients, and a much more diverse biota than the Eastern Mediterranean. Some of the anti-Lessepsian migrants such as the [[sea star]] ''[[Sphaerodiscus placenta]]'' are found only in specialised habitats such as the lagoon of El{{nbsp}}Bilaiyim, which lies {{convert |180 |km |abbr=on}} south of the southern entrance to the Suez Canal, but is much more saline than the surrounding waters of the [[Gulf of Suez]].<ref name=Madl>{{cite web |url=http://biophysics.sbg.ac.at/lm/lesseps.htm |title=Essay about the phenomenon of Lessepsian Migration |access-date=29 December 2016 |publisher=Pierre Madl |work=Colloquial Meeting of Marine Biology I}}</ref>
-The [[alewife (fish)|alewife]] (''Alosa pseudoharengus''), a species of [[shad]] from the Western Atlantic, also invaded the Great Lakes by using the Welland Canal to bypass Niagara Falls. They colonised the Great Lakes and became abundant mostly in [[Lake Huron]] and [[Lake Michigan]], reaching their peak abundance by the 1950s and 1980s.<ref name = Alewife>{{FishBase|Alosa|pseudoharengus|month=June|year=2021}}</ref><ref name = NAS>{{cite web | author1 = Fuller, P. | author2 =  E. Maynard | author3 = D. Raikow | author4 = J. Larson | author5 = A. Fusaro | author6 = M. Neilson | author7 = A. Bartos | name-list-style = and | year = 2021 | title = ''Alosa pseudoharengus'' (Wilson, 1811) | publisher = U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL | url = https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=490 |  access-date = 24 October 2021}}</ref>
+The [[sea slug]] ''[[Biuve fulvipunctata]]'' was described from waters around Japan and is widespread in the eastern Indian Ocean and western Pacific. It was first identified in the Mediterranean in 1961, and was seen in the Red Sea in 2005, most likely as a result of anti-Lessepsian migration.<ref name=Malaquias>{{cite journal |last1=Malaquias |first1=Manuel |last2=Zamora-Silva |first2=Andrea |last3=Vitale |first3=Dyana |last4=Spinelli |first4=Andrea |last5=De Matteo |first5=Sergio |last6=Giacobbe |first6=Salvatore |last7=Ortigosa |first7=Deneb |last8=Cervera |first8=Juan |display-authors=3 |title=The Suez Canal as a revolving door for marine species: a reply to Galil et al. (2016) |journal=Aquatic Invasions |date=2017 |volume=12 |issue=1 |pages=1–4 |doi=10.3391/ai.2017.12.1.01 |doi-access=free |hdl=2066/177049 |hdl-access=free }}</ref> Among the fish species that have been confirmed as anti-Lessepsian migrants are [[peacock blenny]] (''Salaria pavo''),<ref name=iucn>{{cite iucn |first1=Antonio |last1=Di Natale |first2=Murat |last2=Bilecenoglu |first3=Michel |last3=Bariche |author4=Can Bizsel |author5=Enric Massuti |author6=Jeffrey Williams |author7= Matthew Craig |display-authors=3 |year=2014 |title=''Salaria pavo'' |volume=2014 |page=e.T185175A1776635 |doi=10.2305/IUCN.UK.2014-3.RLTS.T185175A1776635.en }}</ref> ''[[Solea aegyptiaca]]'', [[Mediterranean moray]] (''Muraena helena''), the [[rock goby]] (''Gobius paganellus''),<ref name=MSIP>{{cite web |url=http://species-identification.org/species.php?species_group=fnam&id=1615 |title=Fishes of the NE Atlantic and the Mediterranean Rock goby (''Gobius paganellus'') |access-date=1 September 2018 |publisher=Marine Species Identification Portal |editor=J.C. Hureau}}</ref> the meagre (''[[Argyrosomus regius]]''),<ref name=Fishbase>{{cite web |url=http://www.fishbase.org/summary/418 |title=Argyrosomus regius (Asso, 1801) |access-date=26 December 2016 |publisher=Fishbase.org}}</ref> the [[Comber (fish) |comber]] (''Serranus cabrilla''),<ref name=Bos2020>{{cite journal |first1=Arthur R. |last1=Bos |first2=Joel |last2=Ogwang |first3=Michel |last3=Bariche |author4=Mizuki Horoiwa |author5=Menna Megahed |author6=Amged Ouf |author7=Nina Yasuda |display-authors=3 |year=2020 |title=Anti-Lessepsian migration rectified: the Comber ''Serranus cabrilla'' (L. 1758) existed in the Red Sea prior to the Suez Canal opening |url=https://link.springer.com/article/10.1007/s00227-020-03748-0 |journal=Marine Biology |volume=167 |issue=126 |pages=1–10 |doi=10.1007/s00227-020-03748-0 |bibcode=2020MarBi.167..126B |s2cid=225432110 }}</ref> [[European seabass]] (''Dicentrarchus labrax''), and [[spotted seabass]] (''Dicentrarchus punctatus'').<ref name=Chanet>{{cite journal |first1=Bruno |last1=Chanet |first2=Martine |last2=Desoutter-Meniger |first3=Sergey V. |last3=Bogorodsky |year=2012 |title=Range extension of Egyptian sole ''Solea aegyptiaca'' (Soleidae: Pleuronectiformes), in the Red Sea |url=http://sfi.mnhn.fr/cybium/numeros/2012/364/17-Chanet764N.pdf |journal=Cybium |volume=36 |issue=4 |pages=581–584}}</ref>[[File:Chelidonura fulvipunctata.JPG |thumb |''Biuve fulvipunctata'']]
-===Europe===
-The [[white-eye bream]] (''Ballerus sapa'') has invaded the [[Vistula River]] basin by migrating along the [[Dnieper–Bug Canal]] in [[Belarus]], which connects the Vistula [[drainage basin]] with that of the [[Dnieper River]].<ref name = IUCN>{{cite iucn | author1 = Freyhof, J. | author2 = Kottelat, M. | year = 2008 | title = ''Ballerus sapa'' | volume = 2008 | page = e.T135639A4168069| doi = 10.2305/IUCN.UK.2008.RLTS.T135639A4168069.en}}</ref>
+== Other examples ==
-===Panama===
-A small number of species have used the [[Panama Canal]] to move from the Atlantic Ocean to the Pacific Ocean, and vice versa. Six species of Atlantic fish were recorded on the Pacific side of the canal, and three species of Pacific fish were found on the Atlantic side of the canal. The Atlantic fish included ''[[Lupinoblennius dispar]]'', ''[[Hypleurochilus aequipinnis]]'', ''[[Barbulifer ceuthoecus]]'', ''[[Oostethus lineatus]]'', ''[[Lophogobius cyprinoides]]'' and ''[[Omobranchus punctatus]]'', while the Pacific species moving to the Atlantic included ''[[Gnathanodon speciosus]]''. The [[Gatun Lake]]'s freshwater environment forms a barrier to the interchange of marine species.<ref name = McCosker>{{cite journal | author1 = J. E. McCosker | author2 = C. E. Dawson | year = 1975 | title = Biotic passage through the Panama Canal, with particular reference to fishes | journal = Marine Biology | volume = 30 | issue = 4 | pages = 343–351| doi = 10.1007/BF00390639 | bibcode = 1975MarBi..30..343M | s2cid = 83502110 }}</ref>
-===Shipping containers===
+=== North America ===
-[[Shipping container]]s that fall off cargo ships can provide a new habitat for invasive species, in the same manner as an [[artificial reef]]. The ocean floor along shipping lanes is often devoid of hard surfaces needed by some species, and it is theorised  that lost containers could act as stepping stones that invasive species could use to travel to new harbours.<ref>{{cite news |url=https://www.npr.org/2011/04/01/135040267/lost-then-found-shipping-containers-on-seafloor |first=Christopher |last=Joyce|date=2011-04-01 |title=Lost, Then Found: Shipping Containers On Seafloor |work=NPR}}</ref>
+The [[sea lamprey]] reached [[Lake Ontario]] from the Atlantic Ocean through shipping canals and was recorded for the first time in Lake Ontario in the 1830s, but [[Niagara Falls]] was a barrier to their further spread. The deepening of the [[Welland Canal]] in 1919 allowed the sea lamprey to bypass the barrier created by the falls, and by 1938, sea lampreys had been recorded in all of the [[Great Lakes]].<ref name=MSG>{{cite web |url=http://www.seagrant.umn.edu/ais/sealamprey_battle |title=Sea Lamprey: The Battle Continues |access-date=29 December 2016 |publisher=Regents of the University of Minnesota}}</ref>
+The [[alewife (fish) |alewife]] (''Alosa pseudoharengus''), a species of [[shad]] from the Western Atlantic, invaded the Great Lakes by using the Welland Canal to bypass Niagara Falls. They colonised the Great Lakes and became abundant mostly in [[Lake Huron]] and [[Lake Michigan]], reaching their peak abundance by the 1950s and 1980s.<ref name=Alewife>{{FishBase |Alosa |pseudoharengus |month=June |year=2021}}</ref><ref name=NAS>{{cite web |last1=Fuller |first1=P. |first2=E. |last2=Maynard |first3=D. |last3=Raikow |author4=Larson, J. |author5=Fusaro, A. |author6=Neilson, M. |author7=Bartos, A. |display-authors=3 |year=2021 |title=''Alosa pseudoharengus'' (Wilson, 1811) |publisher=[[U.S. Geological Survey]], Nonindigenous Aquatic Species Database, Gainesville, Florida |url=https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=490 | access-date=24 October 2021}}</ref>
+=== Europe ===
+The [[white-eye bream]] (''Ballerus sapa'') has invaded the [[Vistula River]] basin by migrating along the [[Dnieper–Bug Canal]] in [[Belarus]], which connects the Vistula [[drainage basin]] with that of the [[Dnieper River]].<ref name=IUCN>{{cite iucn |last1=Freyhof |first1=J. |last2=Kottelat |first2=M. |year=2008 |title=''Ballerus sapa'' |volume=2008 |page=e.T135639A4168069 |doi=10.2305/IUCN.UK.2008.RLTS.T135639A4168069.en}}</ref>
+=== Panama ===
+A small number of species have used the [[Panama Canal]] to move from the Atlantic Ocean to the Pacific Ocean, and vice versa. Six species of Atlantic fish were recorded on the Pacific side of the canal, and three species of Pacific fish were found on the Atlantic side of the canal. The Atlantic fish included ''[[Lupinoblennius dispar]]'', ''[[Hypleurochilus aequipinnis]]'', ''[[Barbulifer ceuthoecus]]'', ''[[Oostethus lineatus]]'' and ''[[Lophogobius cyprinoides]]'', while the Pacific species moving to the Atlantic included ''[[Gnathanodon speciosus]]''. The [[Gatun Lake]]'s freshwater environment forms a barrier to the interchange of marine species.<ref name=McCosker>{{cite journal |first1=J.E. |last1=McCosker |first2=C.E. |last2=Dawson |year=1975 |title=Biotic passage through the Panama Canal, with particular reference to fishes |journal=Marine Biology |volume=30 |issue=4 |pages=343–351 |doi=10.1007/BF00390639 |bibcode=1975MarBi..30..343M |s2cid=83502110 }}</ref>
+=== Shipping containers ===
+[[Shipping container]]s that fall off cargo ships can provide a new habitat for invasive species, in the same manner as an [[artificial reef]]. The ocean floor along shipping lanes is often devoid of hard surfaces needed by some species, and it is theorised that lost containers could act as stepping stones that invasive species could use to travel to new harbours.<ref>{{cite news |url=https://www.npr.org/2011/04/01/135040267/lost-then-found-shipping-containers-on-seafloor |first=Christopher |last=Joyce |date=2011-04-01 |title=Lost, Then Found: Shipping Containers On Seafloor |work=NPR}}</ref>
 ==See also==
 * [[List of Lessepsian migrants]]
 ==References==
 {{Reflist|20em}}
 == External links ==
 * {{Wiktionary inline|Lessepsian}}

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