Fishing Technology

Permanent URI for this community

http://localhost:4000/handle/123456789/49

Browse

Browsing Fishing Technology by Author "Anrose, A."

Now showing 1 - 1 of 1
  • Item
    Krill trawl by-catch in Indian Ocean sector of the Antarctic region during austral summer 1995-96
    (Fishery Survey of India, Mumbai (India), 2004) Anrose, A.; Boopendranath, M.R.; Nair, M.K.R.
    Krill 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.