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Statistics of The Seychelles Purse Seine Fleet Targeting Tropical Tunas In The Indian Ocean (2000-2018)

Reference: 
IOTC-2019-WPTT21-14_Rev1
File: 
PDF icon IOTC-2019-WPTT21-14_Rev1.pdf
Type: 
Meeting documents
Year: 
2019
Meeting: 
Working Party on Tropical Tunas (WPTT)
Meeting session: 
21
Availability: 
9 October 2019
Authors: 
Assan C
Lucas J
Chassot E
Abstract: 

In 2018, the Seychelles purse seine fishing fleet was composed of 13 purse seiners and 7 supply vessels.
The total annual number of fishing sets reported to be 2,956 which consist of 2,739 positive sets and 217 null sets. A total of 2,784 sets were associated to FOB (combine FADs) and 172 sets associated to free swimming schools (FSC). The total nominal effort in 2018 in term of fishing and searching was about 2,786 and 2,230 days which represent a decreased of 15% and 12% in fishing and searching days compared to 2017.
The total catch recorded by Seychelles purse seine fleet operating in the Indian Ocean reached a total of 123,310 Mt representing a slight increase of 1% compared to 2017 .Skipjack tuna dominated the Seychelles purse seine catches, accounting for 66% of the total catch followed by yellowfin tuna representing for 28% of the total catch, whilst bigeye tuna made up only 5% of the total catch.
A total of 119,544 Mt of tuna were caught on FAD representing 97% of the total catch and 3,664 Mt or 3% of the total catch was caught on FSC. This reflects a 15% increase in catches on FAD’s associated school and an 80% decrease on free swimming school respectively.
Catches on FADs were predominated by skipjack tuna representing 67% of the catch while yellowfin and bigeye tunas represented 27% and 5% of catches, respectively. Catches FSC was dominated by yellowfin tuna representing 60% of the total catch whilst skipjack and bigeye tuna accounted for 27% and 12% of the catch on free swimming schools respectively.

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