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dc.contributor.authorChhandaprajnadarsini, E M-
dc.contributor.authorRudramurthy, N-
dc.contributor.authorSethi, S-
dc.contributor.authorKizhakudan, S J-
dc.contributor.authorSivdas, M-
dc.identifier.issn2582-6727 (Online); 2582-6506 (Print)-
dc.description.abstractStock assessment of the Indian squid Uroteuthis (Photololigo) duvaucelii off north Tamil Nadu coast from commercial trawl landings was studied during the period 2012-2016. The species is mainly caught by trawl net and the annual average landing of the species was 563.3 t contributing to 2 % to the total trawl landing along north Tamil Nadu coast. L∞, K and t0 were estimated as 260 mm, 0.84 yr-1 and -0.105 yr, respectively. Total mortality rate (Z), Natural mortality rate (M), and Fishing mortality rate (F) were 4.43 yr-1, 1.67 yr-1 and 2.78 yr-1, respectively. tmax was estimated to be 3.47 yr. The length at first capture (Lc50 = 62 mm) estimated by Length converted catch curve method was found to be lower than Length at first maturity (Lm50 = 80 mm). Furthermore, Ecurr (current exploitation rate) was found be on higher side than the Emax (0.48) and E0.1 (0.40) which indicates that the fishery is in overexploited stage. Thompson and Bell prediction model showed that a marginal decrease (20 %) in current level of exploitation would help in regeneration of stock for long term sustainability of the resources as well as in achieving maximized economic return.en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJMS Vol.49(11) [November 2020]en_US
dc.subjectExploitation rateen_US
dc.subjectSpawning stock biomassen_US
dc.subjectUroteuthis (Photololigo) duvauceliien_US
dc.titleStock assessment of Indian squid, Uroteuthis (Photololigo) duvaucelii (d'Orbigny [in Férussac & d'Orbigny], 1835) from south-western Bay of Bengalen_US
Appears in Collections:IJMS Vol.49(11) [November 2020]

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