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Fishery of sciaenids with some observations on the biology and stock assessment of Johnieops sina (Cuvier, 1830) exploited along the Malabar coast

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Title Fishery of sciaenids with some observations on the biology and stock assessment
of Johnieops sina (Cuvier, 1830) exploited along the Malabar coast
Not Available
 
Creator Manojkumar,P P
 
Subject Sciaenids
Johnieops sina
growth
mortality
spawning
population parameters
 
Description Not Available
Sciaenids form an important demersal finfish resource exploited off Malabar coast. They are caught
by trawls, gillnets and ringseines and are landed throughout the year. The average annual catch was
2452 t during 2001-2008. The landings fluctuated but showed a decline. Though several species
supported the sciaenid fishery, Johnieops sina was the dominant species contributing more than 58%
to the catch. In the fishery, the length of J. sina ranged from 62 to 229 mm. The length at first maturity
was 114 mm for males and 122 mm for females. The spawning period is prolonged with two peaks,
one in September-November and another in February-April. The male ā€“ female sex ratio was almost
equal in the catch. The length-weight relationship was estimated as W=0.000046658 L 2.8313. The
estimated asymptotic length (Lāˆž) and annual growth coefficient (K) of J. sina were 268 mm and 0.45,
respectively. The respective annual total, natural and fishing mortalities were 3.63, 1.10 and 2.31. The
spawning stock biomass is more than 30% of the stock at its unexploited level.
Not Available
 
Date 2021-09-16T06:09:48Z
2021-09-16T06:09:48Z
2011
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62802
 
Language English
 
Relation Not Available
 
Publisher Marine Biological Association of India