Saduria entomon: Difference between revisions
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'''''Saduria entomon''''' is a [[benthos|benthic]] [[isopoda|isopod]] [[crustacean]] of the family [[Chaetiliidae]].<ref name="itis"/> It is distributed along the coasts of the [[Arctic Ocean]] and of the northern [[Pacific Ocean]]. It is also found in the brackish [[Baltic Sea]], where it is considered a glacial [[relict]].<ref name="aquascope"/> Moreover it is present in a number of North European lakes, including [[Lake Ladoga|Ladoga]], [[Vänern]] and [[Vättern]]. It has been [[introduced species|introduced]] into the [[Black Sea]].<ref>{{cite journal |author=Y. Kvach |year=2009 |title=First report of ''Saduria'' (''Mesidotea'') ''entomon'' (Linnaeus, 1758) (Isopoda: Chaetiliidae) in the Black Sea |journal=[[Aquatic Invasions]] |volume=4 |issue=2 |pages=393–395 |url=http://www.aquaticinvasions.ru/2009/AI_2009_4_2_Kvach.pdf |format=[[Portable Document Format|PDF]] |doi=10.3391/ai.2009.4.2.17}}</ref> |
'''''Saduria entomon''''' is a [[benthos|benthic]] [[isopoda|isopod]] [[crustacean]] of the family [[Chaetiliidae]].<ref name="itis"/> It is distributed along the coasts of the [[Arctic Ocean]] and of the northern [[Pacific Ocean]]. It is also found in the brackish [[Baltic Sea]], where it is considered a glacial [[relict]].<ref name="aquascope"/> Moreover, it is present in a number of North European lakes, including [[Lake Ladoga|Ladoga]], [[Vänern]] and [[Vättern]]. It has been [[introduced species|introduced]] into the [[Black Sea]].<ref>{{cite journal |author=Y. Kvach |year=2009 |title=First report of ''Saduria'' (''Mesidotea'') ''entomon'' (Linnaeus, 1758) (Isopoda: Chaetiliidae) in the Black Sea |journal=[[Aquatic Invasions]] |volume=4 |issue=2 |pages=393–395 |url=http://www.aquaticinvasions.ru/2009/AI_2009_4_2_Kvach.pdf |format=[[Portable Document Format|PDF]] |doi=10.3391/ai.2009.4.2.17}}</ref> |
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''Saduria entomon'' is one of the largest crustaceans in the Baltic Sea. The largest ones are found in the depths of the [[Gulf of Bothnia]],<ref name="portal">{{cite web |url=http://www.itameriportaali.fi/fi/tietoa/sanakirja/fi_FI/kilkki/ |title=Kilkki |language=Finnish|author= |date= |work=The Baltic Sea Portal |publisher= |accessdate=20 June 2010}}</ref> being almost {{convert|9|cm|in|0}} in length.<ref name="aquascope"/> ''S. entomon'' are sexually dimorphic, with males growing larger and maturing at larger sizes than females.<ref name=haahtela/> Most individuals die after reproduction; the species may be functionally [[Semelparity and iteroparity#Semelparity|semelparous]], but it is probably capable of [[Semelparity and iteroparity#Iteroparity|iteroparity]]. Its lifespan is 3 years, possibly much longer.<ref name=haahtela>{{Cite journal| volume = 27| pages = 269–278| last = Haahtela| first = Ilpo| title = What do Baltic studies tell us about the isopod ''Saduria entomon'' (L.)?| journal = Annales Zoologici Fennici| year = 1990| url = http://www.sekj.org/PDF/anzf27/anz27-269-278.pdf}}</ref> |
''Saduria entomon'' is one of the largest crustaceans in the Baltic Sea. The largest ones are found in the depths of the [[Gulf of Bothnia]],<ref name="portal">{{cite web |url=http://www.itameriportaali.fi/fi/tietoa/sanakirja/fi_FI/kilkki/ |title=Kilkki |language=Finnish|author= |date= |work=The Baltic Sea Portal |publisher= |accessdate=20 June 2010}}</ref> being almost {{convert|9|cm|in|0}} in length.<ref name="aquascope"/> ''S. entomon'' are sexually dimorphic, with males growing larger and maturing at larger sizes than females.<ref name=haahtela/> Most individuals die after reproduction; the species may be functionally [[Semelparity and iteroparity#Semelparity|semelparous]], but it is probably capable of [[Semelparity and iteroparity#Iteroparity|iteroparity]]. Its lifespan is 3 years, possibly much longer.<ref name=haahtela>{{Cite journal| volume = 27| pages = 269–278| last = Haahtela| first = Ilpo| title = What do Baltic studies tell us about the isopod ''Saduria entomon'' (L.)?| journal = Annales Zoologici Fennici| year = 1990| url = http://www.sekj.org/PDF/anzf27/anz27-269-278.pdf}}</ref> |
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Revision as of 19:51, 6 December 2015
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Saduria entomon is a benthic isopod crustacean of the family Chaetiliidae.[1] It is distributed along the coasts of the Arctic Ocean and of the northern Pacific Ocean. It is also found in the brackish Baltic Sea, where it is considered a glacial relict.[2] Moreover, it is present in a number of North European lakes, including Ladoga, Vänern and Vättern. It has been introduced into the Black Sea.[3]
Saduria entomon is one of the largest crustaceans in the Baltic Sea. The largest ones are found in the depths of the Gulf of Bothnia,[4] being almost 9 centimetres (4 in) in length.[2] S. entomon are sexually dimorphic, with males growing larger and maturing at larger sizes than females.[5] Most individuals die after reproduction; the species may be functionally semelparous, but it is probably capable of iteroparity. Its lifespan is 3 years, possibly much longer.[5]
Saduria entomon is a predator that feeds on other benthic animals, such as Monoporeia affinis. It is also a scavenger and a cannibal.[2]
References
- ^ a b "Saduria entomon (Linnaeus, 1758)". Integrated Taxonomic Information System. Retrieved February 1, 2006.
- ^ a b c "Saduria entomon". Aquascope. Retrieved 20 June 2010.
- ^ Y. Kvach (2009). "First report of Saduria (Mesidotea) entomon (Linnaeus, 1758) (Isopoda: Chaetiliidae) in the Black Sea" (PDF). Aquatic Invasions. 4 (2): 393–395. doi:10.3391/ai.2009.4.2.17.
- ^ "Kilkki". The Baltic Sea Portal (in Finnish). Retrieved 20 June 2010.
- ^ a b Haahtela, Ilpo (1990). "What do Baltic studies tell us about the isopod Saduria entomon (L.)?" (PDF). Annales Zoologici Fennici. 27: 269–278.