Field identification of yellowfin and bigeye tuna

Roul, Subal Kumar and Retheesh, B and Prakasan, D and Abdussamad, E M (2016) Field identification of yellowfin and bigeye tuna. Marine Fisheries Information Service; Technical and Extension Series (227). pp. 14-16. ISSN 0254-380 X

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    Abstract

    Tunas are commercially important food fishes exploited from all the world oceans. Of the 9 species contributing to the Indian tuna fisheries, yellowfin and bigeye tuna grow to big sizes, and with superior meat quality have high export demand. Identification of these tuna species are comparatively easier in fresh condition than the iced or frozen condition due to discolouration, fin and skin damage during handling and storage process. In such cases certain internal characteristics such as length of air bladder, liver shape and striation are used. Misidentification of yellowfin and bigeye tunas occurs in several cases. The present study is based on field observations at Cochin Fisheries Harbour and uses an easy field identification key for yellowfin and bigeye tuna based on external characteristics developed by Itano (2005) and IOTC (2013). Bigeye tuna are landed stray numbers along with yellowfin tunas, at Cochin Fisheries Harbour.

    Item Type: Article
    Uncontrolled Keywords: Field identification; yellowfin tuna; bigeye tuna
    Subjects: Marine Fisheries > Marine Fishing
    Pelagic Fisheries > Tuna fisheries
    Divisions: CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 27 Dec 2016 04:51
    Last Modified: 14 Feb 2017 04:48
    URI: http://eprints.cmfri.org.in/id/eprint/11372

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