Title: Scomberomorus guttatus (Bloch & Schneider, 1801) exploited in India
Abstract: Scomberomorus guttatus known popularly as the spotted seer and known worldwide as the Indo-Pacific king mackerel is a preferred table fish in India. The family Scombridae is represented by four species viz. S.commerson (62.0%), S.guttatus (37.7%), S. lineolatus (0.1%) and Acanthocybium solandri (0.2%) in India and it comprised 1.6% of the total marine fish catch of the country. Exploitation is mainly by gillnets and the hooks and line. S.guttatus is represented in the capture fishery of all the coastal states of India with high catches along West Bengal, Andhra Pradesh, Gujarat and Maharashtra. The annual catch of S.guttatus during 2007-2011 ranged between 15,225 t and 23,796 t with an average catch of 19,712 t. The post-monsoon and winter seasons (September to January) were the most productive seasons in terms of catch and catch rate. The fork length of S.guttatus landed by gillnets ranged between 20 cm and 60 cm with the mean length at 42.2 cm. The estimated length-relationship was: log W = -1.8181362 + 2.888425 log L, (r = 0.985). Gut contents mainly consisted of fishes (mackerel, sardines, ribbonfish) and Acetes sp. The von Bertalanffy growth equation was: Lt = 61.27 [1 – e - 1.4 (t + 0.0046) ] and length attained at the end of 1 and 2 years were 46.3 cm and 57.6 cm respectively. The growth performance index was 3.721 and longevity was 2.138 years. Recruitment pattern was unimodal with peak recruitment from February - July and the length at first capture was estimated 21.1 cm. The natural mortality, fishing mortality and total mortality were 1.79, 2.92 and 4.71, respectively and exploitation ratio was 0.62.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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