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Fishery of flatfishes with observations on the biology and stock assessment of the Malabar sole, Cynoglossus macrostomus Norman, 1928 exploited off Kerala coast

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Title Fishery of flatfishes with observations on the biology and stock assessment
of the Malabar sole, Cynoglossus macrostomus Norman, 1928 exploited
off Kerala coast
Not Available
 
Creator Nair,Rekha J
Zacharia,P U
Vivekanandan,E
Manojkumar,P P
Pavithran,P P
 
Subject Fishery
flatfishes
biology
stock assessment
Malabar sole
Cynoglossus macrostomus Norman
Kerala coast
 
Description Not Available
The flatfishes form one of the important demersal fishery resources exploited along Kerala coast. Annual average
production of flatfishes was 16938 t during 1985-2012, of this Cynoglossus macrostomus formed 85.4%. Peak
landings were recorded from September onwards after south-west monsoon. The von Bertlanffy’s growth parameters
estimated for C. macrostomus were L∞ = 186 mm and K = 0.70 y-1. The fish attained 94, 141,169, 175 and 183 mm
at the end of 1, 2, 3, 4 and 5 years. The age determination based on the length frequency data showed that life span
was five years. Total mortality observed was 2.34 y-1, and natural mortality 1.10 y-1. The length-weight relationship
showed no significant variation between sexes. The spawning is prolonged with two peaks. The size at first maturity
is estimated as 102 mm for females and 95 mm for males. Females dominated the fishery. The resource at present is
being exploited at the optimum level in Kerala. The total and standing stock of this species along the Kerala coast is
20,400 t and 9,052 t respectively. The exploitation rate (E) was estimated as 0.63. The relative yield per recruit and biomass
per recruit analysis also showed that the stock of C. macrostomus in Kerala is exploited optimally.
Not Available
 
Date 2021-09-17T04:07:12Z
2021-09-17T04:07:12Z
2014
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63513
 
Language English
 
Relation Not Available
 
Publisher Central Marine Fisheries Research Institute