Year of publication 2014

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Product type Meeting

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Edition 1

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Synopsis (short abstract) Yellowfin tu (Thunnus albacares) are among the major target species caught by sports fishers in Kenyan waters. The study on the feeding habits of the tu was conducted between November 2012 and January 2013 which is the peak season for yellowfin tu in the Kenyan waters. For seasolity data, a 19 year daily catch data from 1987 to 2011 was used. The yellowfin tu were most abundant in the coastal waters during the months of October and November. There were two distinct size classes caught during thi s study. The smaller ones had an average weight 7.2 ± 1.0 kgs and had an average fork length of 73.4 ±5.6 cm. The larger ones had an average weight 26.1 ± 4.4 kgs and had an average fork length of 110.8 ±7.0 cm. The major food contents in the fish stomachs were crabs (Charybdis smithii), Sepia spp., anchovies (Stolephorus commersonii) and Kawakawa (Euthynus affinis). The study also compared the feeding habits of tu and sailfish and found a similarity in stomach content of the larger yellowfin tu and the sailfish while that of the smaller yellowfin tu was different from the larger tu and sailfish.

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Statutory body / Meeting title Indian Ocean Tuna Commission (IOTC)

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Meeting symbol IOTC-2013-WPTT15-34

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Meeting Session Number 15

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Language English

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