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Age and growth of the scad Decapterus dayi Wakiya

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Relation http://eprints.cmfri.org.in/521/
 
Title Age and growth of the scad Decapterus dayi Wakiya
 
Creator Sreenivasan, P V
 
Subject Pelagic Fishes
 
Description Decapteiiix dayi Wakiya attains a length of 150 mm in the first year and
184 mm by 19 months at Vizhinjam. Maximum growth of 30 mm and 20 mm was
noticed during the first and second months, respectively. Though many broods
enter into the fishery in the same year, those bom in April manifest strongly in
the fishery than the earlier and later ones. The younger broods tend to catch up
the older ones by faster growth and form a unimodal group at the size of 120-129
mm, and are found as a distinct unimodal size class then onwards.
Adopting Walford's and Van Bfrtalanffy's equation to the data the various
growtth parameters obtained were: L(x ~ 260 mm; t^ = - 0.50; k = 0.1858 and
L, =20 mm. The observed and calculated values were found to be in close
agreement. Fishery is dependent on the O-year class to the extent of 42.8% to
75.6%.
 
Publisher CMFRI/ICAR
 
Date 1982
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/521/1/Article_18.pdf
Sreenivasan, P V (1982) Age and growth of the scad Decapterus dayi Wakiya. Indian Journal of Fisheries, 29 (1&2). pp. 144-150.