Jump to content

Lobster fishing: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
→Restrictions: Added details on enforcement of above restrictions.
m Updated formatting in references list.
Line 20: Line 20:


==Restrictions==
==Restrictions==
Legal restrictions apply to the catching of lobsters in many parts of the world, in order to prevent [[overfishing]] and allow [[recruitment (biology)|recruitment]] to the next generation. Common restrictions include the provision of a [[minimum landing size]], preventing fishermen from catching "berried" females (females carrying eggs), [[closed season]]s and limiting catches with [[individual fishing quota]]s. Commercial fishing regulators, including the [['''Atlantic States Marine Fisheries Commission''']] and the [['''National Marine Fisheries Service''']], enforce these restrictions through the use of tightly controlled lobster fishing licenses and lobster pot tags that correspond to the fisher's permit number. Tag manufacturers also maintain databases for each state's licensed fisheries, tracking how many tags each fisher purchases every year.<ref>http://www.tydenbrooks.com/Newsroom/Success-Stories/Lobster-Tags.aspx</ref>
Legal restrictions apply to the catching of lobsters in many parts of the world, in order to prevent [[overfishing]] and allow [[recruitment (biology)|recruitment]] to the next generation. Common restrictions include the provision of a [[minimum landing size]], preventing fishermen from catching "berried" females (females carrying eggs), [[closed season]]s and limiting catches with [[individual fishing quota]]s. Commercial fishing regulators, including the [['''Atlantic States Marine Fisheries Commission''']] and the [['''National Marine Fisheries Service''']], enforce these restrictions through the use of tightly controlled lobster fishing licenses and lobster pot tags that correspond to the fisher's permit number. Tag manufacturers also maintain databases for each state's licensed fisheries, tracking how many tags each fisher purchases every year.<ref>{{cite web |publisher=TydenBrooks Security Seals |url=http://www.tydenbrooks.com/Newsroom/Success-Stories/Lobster-Tags.aspx |title=Success Stories: Lobster Trap Tags}}</ref>


==Distribution and species==
==Distribution and species==

Revision as of 01:53, 20 February 2013

Fishermen with their catch of the spiny lobster Jasus frontalis in the Juan Fernández Islands, Chile

Lobsters[Note 1] are widely fished around the world for their meat.[1] They are often hard to catch in large numbers, but their large size can make them a profitable catch.[1] Although the majority of the targeted species are tropical, the majority of the global catch is in temperate waters.[1]

Methods

Several methods are used to catch lobsters, with the method depending largely on the species being targeted.

Lobster pots

Main article: Lobster trap
A lobster pot

The large Homarus lobsters are caught almost exclusively with lobster pots (also called "lobster traps"). These are large rigid objects which the lobster enters voluntarily, often to reach bait, and which it then cannot escape.[2] Traps are also used in some spiny lobster fisheries, such as the fishery for the California spiny lobster, Panulirus interruptus, in the eastern Pacific Ocean.[3]

Trawling

Trawling is the main method used for the Norway lobster or Dublin Bay prawn, Nephrops norvegicus,[4] and for those slipper lobsters that prefer soft substrates, such as Thenus and Ibacus.[5] It has also become more frequently used in the fishery for Homarus americanus.[6]

Gill nets and trammel nets

Gill nets and trammel nets are used for the Caribbean spiny lobster, Panulirus argus.[7]

Hand-fishing and spearfishing

Slipper lobsters that prefer crevices, caves and reefs (including Scyllarides, Arctides and Parribacus species) are usually caught by SCUBA divers.[5]

Restrictions

Legal restrictions apply to the catching of lobsters in many parts of the world, in order to prevent overfishing and allow recruitment to the next generation. Common restrictions include the provision of a minimum landing size, preventing fishermen from catching "berried" females (females carrying eggs), closed seasons and limiting catches with individual fishing quotas. Commercial fishing regulators, including the '''Atlantic States Marine Fisheries Commission''' and the '''National Marine Fisheries Service''', enforce these restrictions through the use of tightly controlled lobster fishing licenses and lobster pot tags that correspond to the fisher's permit number. Tag manufacturers also maintain databases for each state's licensed fisheries, tracking how many tags each fisher purchases every year.[8]

Distribution and species

Principal commercial lobster species
Homarus americanus (American or Maine lobster)
Nephrops norvegicus (Norway lobster, Dublin Bay prawn, langoustine or scampi)
Panulirus argus (Caribbean spiny lobster)

Of the 280,000 tons of lobster catches reported to the Food and Agriculture Organization for the year 2010, 188,000 t (67%) was of true lobsters (family Nephropidae), 80,000 t (28%) was of spiny lobsters (Palinuridae) and about 10,000 t (4%) was of slipper lobsters (Scyllaridae).[9]

FAO common name Scientific name Catch in 2010 (t) [9]
American lobster Homarus americanus 115651
Norway lobster Nephrops norvegicus 66544
Caribbean spiny lobster Panulirus argus 35642
Tropical spiny lobsters nei[Note 2] Panulirus 22128
Japanese fan lobster Ibacus ciliatus 9114
Australian spiny lobster Panulirus cygnus 5502
European lobster Homarus gammarus 5083
Southern rock lobster Jasus novaehollandiae 4368
Cape rock lobster Jasus lalandii 3418
Red rock lobster Jasus edwardsii 2871
Lobsters nei[Note 2] Reptantia 2577
Longlegged spiny lobster Panulirus longipes 2303
Palinurid spiny lobsters nei[Note 2] Palinurus 1132
Flathead lobster Thenus orientalis 924
New Zealand lobster Metanephrops challengeri 825
Southern spiny lobster Palinurus gilchristi 734
Common spiny lobster Palinurus elephas 449
Tristan da Cunha rock lobster Jasus tristani 403
St. Paul rock lobster Jasus paulensis 390
Spiny lobsters nei[Note 2] Palinuridae 306

Atlantic Ocean

About 122,000 t of lobsters are caught in the north Atlantic Ocean (FAO Fishing Areas 21 and 27),[1] where the dominant species are Homarus americanus and Nephrops norvegicus.

N. norvegicus is mostly caught by trawling. Around 60,000 tonnes are caught annually, half of it in the United Kingdom's waters.[4] Discards from Nephrops fishery may account for up to 37% of the energy requirements of certain marine scavengers, such as the hagfish Myxine glutinosa.[10] Boats involved in Nephrops fishery also catch a number of fish species such as plaice and sole, and it is thought that without that revenue, Nephrops fishery would be economically unviable.[11]

Caribbean Sea

In the Caribbean Sea, the main species targeted by lobster fisheries is the Caribbean spiny lobster, Panulirus argus.

Eastern Pacific Ocean

The most important lobster species on the West Coast of the United States is the California spiny lobster, Panulirus interruptus.[12] Recreational lobster fishers in California must abide by a legal catch limit of seven lobsters per day and a minimal catch size of 3¼ inch long body measured from the eye socket to the edge of the carapace.[13] The sport season for California spiny lobster starts on the Saturday preceding the first Wednesday in October through to the first Wednesday after the 15th of March.[13] Commercial fishers use lobster traps.[14]

New Zealand

Main article: Fishing industry in New Zealand

New Zealand implements the Quota Management System (QMS) to limit catches of fish and shellfish. Under QMS, a limit of 2,807,364 kilograms (6,189,178 lb) for the rock lobster Jasus edwardsii, and 1,291,000 kg (2,846,000 lb) for the New Zealand scampi, Metanephrops challengeri, were in place in 2011.[15] Recreational fishers may only use lobster pots,[16] while commercial fishers catch lobsters by trawling. The total catch in 2011 was 2,539,946 kg (5,599,622 lb) of J. edwardsii, 350,194 kg (772,046 lb) of M. challengeri, and 23,086 kg (50,896 lb) of Sagmariasus verreauxi.[15]

Australia

A number of species are targeted around the coasts of Australia. Jasus edwardsii is found off Australia's southern coast, from Western Australia to New South Wales, as well as in New Zealand. Thenus orientalis, known as the Moreton Bay bug, is fished on the country's north coast.[17]

Notes

  1. ^ For the purposes of fisheries, the term "lobster" includes true lobsters (Nephropidae), spiny lobsters (Palinuridae), slipper lobsters (Scyllaridae), and several other groups of large long-bodied decapod crustaceans.
  2. ^ a b c d "Nei" = not elsewhere included.

References

  1. ^ a b c d Lipke Holthuis (1991). "Introduction". Marine Lobsters of the World (PDF). FAO species catalogue. Vol. 13. Rome, Italy: Food and Agriculture Organization. pp. 1–16. ISBN 92-5-103027-8.
  2. ^ "Lobster pot fishing". Fishing techniques. Food and Agriculture Organization. Retrieved June 21, 2012.
  3. ^ "Spiny lobster fishing with trap". Fishing techniques. Food and Agriculture Organization. Retrieved June 21, 2012.
  4. ^ a b "Nephrops norvegicus (Linnaeus, 1758)". FAO: Fisheries Global Information System (FIGIS). February 26, 2004.
  5. ^ a b "Family SCYLLARIDAE Latreille, 1825". Australian Faunal Directory. Department of the Environment, Water, Heritage and the Arts. January 8, 2010.
  6. ^ "Homarus americanus (H. Milne Edwards, 1837)". FAO: Fisheries Global Information System (FIGIS). February 26, 2004.
  7. ^ "Spiny lobster gillnets and trammel nets fishing". Fishing techniques. Food and Agriculture Organization. Retrieved June 23, 2012.
  8. ^ "Success Stories: Lobster Trap Tags". TydenBrooks Security Seals.
  9. ^ a b "Global Capture Production 1950–2010". FIGIS. Food and Agriculture Organization. Retrieved June 21, 2012.
  10. ^ T. L. Catchpole, C. L. J. Frid & T. S. Gray (2006). "Importance of discards from the English Nephrops norvegicus fishery in the North Sea to marine scavengers". Marine Ecology Progress Series. 313: 215–226. doi:10.3354/meps313215.
  11. ^ Ivor Clucas (1997). "A study of the options for utilization of bycatch and discards from marine capture fisheries: 9.1.2 Nephrops". FAO Fisheries Circular. No. 928: FIIU/C928. {{cite journal}}: |volume= has extra text (help)
  12. ^ Lipke B. Holthuis (1991). "Panulirus interruptus". FAO Species Catalogue, Volume 13. Marine Lobsters of the World. FAO Fisheries Synopsis No. 125. Food and Agriculture Organization. ISBN 92-5-103027-8.
  13. ^ a b "California Spiny Lobster: fishing and life history information" (PDF). California Department of Fish and Game. Retrieved April 12, 2010.
  14. ^ "Lobster". Commercial Fishing Digest for 2009-2010 (PDF). California Department of Fish and Game. pp. 53–55. Retrieved April 12, 2010.
  15. ^ a b "Spiny red rock lobster (CRA)". New Zealand Fisheries information website. Ministry of Fisheries. Retrieved April 4, 2011.
  16. ^ "A guide to New Zealand's marine recreational fishing rules" (PDF). Ministry of Fisheries. Retrieved April 4, 2011.
  17. ^ Lipke B. Holthuis (1991). "Thenus orientalis". Marine Lobsters of the World. FAO Fisheries Synopsis No. 125. Food and Agriculture Organization. pp. 227–228. ISBN 92-5-103027-8.
Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=Lobster_fishing&oldid=539151705"