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Indices of environmental variability in the Indian Ocean 1970-2005

Year of publication 2005

Product type Meeting

Edition 1

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

Meeting symbol IOTC-2006-WPTT-08

Meeting Session Number 8

Language English

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    A comparison of changes in the exploration and exploitation of oceanic tuna resources in the Indian EEZ in 1970-2012 2013
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    The Indian EEZ is about 2.8% of the surface area of the Indian Ocean. As per IOTC, from the Indian Ocean in the year 1970 harvested 41,813 tons of Yellowfin tu whereas from the Indian seas only 600 tons of Yellowfin tu. During 70’s Tu is one of the least exploited resources of Indian Seas, the average catch of Yellowfin tu for 1970-79 period being 1,768 tons and skipjack tu 1,191tons. The peak production of Yellowfin tu of 3720 tons and skipjack 2396 tons was reordered in 1979. Exploration and e xploitation of the oceanic tu resources in the areas over the past four decades have shown that the tu resources in the area consists of Yellowfin tu (Thunnus albacares), the Bigeye tu (Thunnus obesus) and Skipjack tu (Kastuwonus pelamis).In Lakshadweep islands, Skipjack tu and a small fraction of juvenile Yellowfin tu which enters the surface water are caught by pole and lines and troll lines. The alysis of the average tu catch during the 80’s is 7,657 tons and also the survey result revealed t hat from September to March is the highly productive season. In Indian waters for the last two decades, the oceanic tu catch is in the increasing trend with minor fluctuations. The last three years from 2010 (21,215 tons) to 2012 (31,464 tons) there is an increase in trend observed. The highest catch of Yellowfin tu was observed during 2012. The present paper deals with exploration and exploitation of oceanic tu resources in the Indian EEZ and contiguous oceanic water based on the oceanic resour ces survey carried out by Fishery Survey of India.
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