Tuna drift gillnet fishery at Chennai, Tamil Nadu- an update

Sivadas, M and Abdussamad, E M and Margaret Muthu Rathinam, A and Mohan, S and Vasu, P and Laxmilatha, P (2019) Tuna drift gillnet fishery at Chennai, Tamil Nadu- an update. Journal of the Marine Biological Association of India, 61 (2). pp. 41-46.

JMBAI_2019_Sivadas M_Tuna drift gillnet fishery at Chennai, Tamil Nadu.pdf

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    The present study describes the status of multiday drift gillnet fishery for tuna from Chennai fishing harbour based on data for the years 2016 – 2017. The data is also compared with that during 1999- 2006. Both the craft and gear increased in size with consequent extension of fishing grounds and increase in the number of days/ fishing trip. The size of the boats increased to 20-23 m OAL from 11-12 m OAL and weight of the gear from 1 to more than 6 t. Annual average catch increased to 8523 t during 2016-2017 from 595 t during 1999-2006. Average catch per unit effort was 8310 kg as against 730 kg during 1999-2006. Yellowfin tuna, Thunnus albacares and Skipjack tuna, Katsuwonus pelamis were the dominant species. The stock position of skipjack tuna and yellowfin tuna vis-àvis the three indicators indicated that the percentage of mature yellowfin tuna in the catch in 2017 was 68%, fish in optimum length 35% and mega-spawners 33% whereas in skipjack tuna the respective percentages were 99.5, 21.1 and 79.1. Problems and prospects of multiday tuna drift gillnet fishery are also discussed.

    Item Type: Article
    Uncontrolled Keywords: Tuna drift gill net, fishery, stock position, skipjack and yellowfin tuna.
    Subjects: Pelagic Fisheries > Tuna fisheries
    Fishery Technology > Crafts & Gear
    Divisions: CMFRI-Madras (Chennai)
    Depositing User: Arun Surendran
    Date Deposited: 12 May 2020 07:16
    Last Modified: 12 May 2020 07:16
    URI: http://eprints.cmfri.org.in/id/eprint/14242

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