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Fishery and population characteristics of Indian mackerel, Rastrelliger kanagurta (Cuvier) at Kakinada

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Relation http://eprints.cmfri.org.in/5838/
 
Title Fishery and population characteristics of Indian
mackerel, Rastrelliger kanagurta (Cuvier) at
Kakinada
 
Creator Abdussamad, E M
Mohamad Kasim, H
Achayya, P
 
Subject Mackerel fishery
 
Description Indian mackerel, Rastrelliger kanagurta is exploited by trawls and gillnets
along Kakinada coast. Its production increased from 67 t in 1988 ā€™99 to 3,493
t in 1997 ā€™98. Period of peak abundance and fishery was February-March while
recruitment was high during December-January. Length weight relationship
showed that females were slightly heavier than males of the same size. Growth
parameters, Lāˆž and K were estimated as 286.3 mm and 1.89/year respectively.
Natural mortality of the stock was 2.61. Total mortality varied between 4.69
and 9.29 and fishing mortality between 2.08 and 6.68. Stock varied during the
period between 1,814 and 5,255 t and biomass between 268 and 902 t. Maximum
sustainable yield is 2,239 t. Emax is 0.77, whereas exploitation rate varied
between 0.44 and 0.72. These indicated that the resource is currently under
moderate fishing pressure especially from trawls and has only marginal
scope for further increase in production. Since further increase in effort by
trawls would be detrimental for the resource it is recommended to reduce their
effort marginally or to maintain at the present level, whereas effort by gillnets
can be increased.
 
Publisher CMFRI; Kochi
 
Date 2006
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/5838/1/a3.pdf
Abdussamad, E M and Mohamad Kasim, H and Achayya, P (2006) Fishery and population characteristics of Indian mackerel, Rastrelliger kanagurta (Cuvier) at Kakinada. Indian Journal of Fisheries, 53 (1). pp. 77-83.