Krill trawl by-catch in Indian Ocean sector of the Antarctic region during austral summer 1995-96

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dc.contributor.authorAnrose, A.
dc.contributor.authorBoopendranath, M.R.
dc.contributor.authorNair, M.K.R.
dc.date.accessioned2014-03-11T05:42:24Z
dc.date.available2014-03-11T05:42:24Z
dc.date.issued2004
dc.description.abstractKrill trawl by-catch samples were collected at different stations in FAO statistical Fishing Area 58 in the Indian Ocean sector of the Antarctic Ocean during the First indian Antarctic Kriil Expedition(FIKEX) (27 December 1995- 10 March 1996) on board FORV Sagar Sampada by operating three types of Gear, 2.5 m Isaccs Kidd Midwater Trawl (IKMT), 42 M Polish Krill Trawl and 49.5 m Krill Midwater Trawl (Cosmos Trawl, Denmark), 18 hauls were made using 2.5 m IKMT in the area 59°00' - 61"08' S lat., 30"04'-40°04' long. Landed total catch of 161.5 kg. This included a by-catch of 148.815 (Salps 148.81 kg and lantern fishes 0.005 kg)and Antarctic krill, Euphausia supaba 12.69 kg. During 16 aimed trawl operations using krill midwater trawls targeted at Antarctic krill a total catch of 12470 kg was recorded. This included a by-catch of 6833kg and 5673kg of Antarctic krill, Euphausia supcrba. The by-catch 6738 kg was constituted by Salps, followed by 35 kg of jelly fish, 12 kg of krill juveniles, 0.11 kg of latern fish, 5.7kg of squid and 2.7 kg of dagger footh fish. In commercial exploitation of the Antarctic krill, by-catch plays a major role because sorting of krill from by-catch is more difficult in the presence of Salps, jelly fish, juvenile fish, fish larvae etc. Usually if the by-catch constitutes over 20% of the total catch in a haul either the entire catch will be discarded or opt for change of the fishing ground. Therefore, the entire operation for krill is based on the percentage of the by-catch species. As the information on the by-catch of the Fishing area 58 of Southern Ocean is very limited, an attempt is made in this paper to analyse the by-catch and the species in percentage recorded during the First Indian Antarctic Krill Expedition.en_US
dc.identifier.citationPaper presented at the International Symposium on "Large Marine Ecosystems: Exploration and Exploitation for Sustainable Development and Conservation Organised by Fishery Survey of India, Mumbai at Cochin, 25-27 November 1998 ed. by Somvanshi, V.S., 549-559en_US
dc.identifier.urihttp://hdl.handle.net/123456789/1676
dc.language.isoenen_US
dc.publisherFishery Survey of India, Mumbai (India)en_US
dc.subjectKrill trawlen_US
dc.subjectindian oceanen_US
dc.subjectantarctic regionen_US
dc.subjectaustral summeren_US
dc.titleKrill trawl by-catch in Indian Ocean sector of the Antarctic region during austral summer 1995-96en_US
dc.typeArticleen_US
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