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Population dynamics of Nemipterus japonicus (Bloch) in the trawling grounds off Cochin

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Title Population dynamics of Nemipterus japonicus (Bloch)
in the trawling grounds off Cochin
Not Available
 
Creator Joshi,K K
 
Subject Fishery
Growth
Nemipterus japonicus
Population dynamics
Spawning
 
Description Not Available
Population dynamics of Nemipterus japonicus (Bloch), the dominant species of threadfin breams fished off Cochin was
studied during the period 2000-2002. N. japonicus was dominant during south-west monsoon and its spawning season
extended from May to November. The estimated VBGF parameters were Lá= 318 mm, K= 0.69 yr-1(males), and
Lá = 265 mm, K= 0.77 yr-1(females) indicating marked growth difference between the two sexes of N. japonicus. The study indicated that the present fishing effort along Cochin has reached an optimum level. The maximum yield in the present level of F can be obtained by increasing the length at first capture by 177 % of the present yield. The reduction in the cod-end mesh size unless stopped will lead to recruitment overfishing over a period of years.
Not Available
 
Date 2021-09-16T05:25:53Z
2021-09-16T05:25:53Z
2010
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62671
 
Language English
 
Relation Not Available
 
Publisher CMFRI/ICAR