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Crab fishery of t h e Calicut coast with some aspects of t he population characteristics of Portunus sanguinolentus, P. pelagicus and Charybdis cruciata

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Relation http://eprints.cmfri.org.in/185/
 
Title Crab fishery of t h e Calicut coast with some
aspects of t he population characteristics of
Portunus sanguinolentus, P. pelagicus and
Charybdis cruciata
 
Creator Sarada, P T
 
Subject Crabs
 
Description Annual crab landings by mechanised trawlers ranged between 9.0 t (1988-'89)
and 64.0 t (1987-'88). During 1987-'91 period. Portunus sanguinolentus (94.2
%), P. pelagicus (3.0 %) and Charybdis cruciata (2.8 %) were the dominant
species. The carapace length-body weight relationship were : W = 0.01037 L^^"'
for P. sanguinolentus, W = 0.00374 L = ^^'^ •' for P. pelagicus and W= 0.00059
L ^^^'•'' for C. cruciata. The carapace width-body weight relationships of the
respective species were : W = 0.00013 L ''•^"^^ W = 0.00024 U™" and W =
0.00029 L ^ "'"*''. The carapace length-carapace width relationships were W =
19.636+1.7218 L for P. Sanguinolentus, W = 13.6133 + 1. 9549 L for P.
pelagicus and W = 0.9874 + 1. 5473 L for C. Cruciata. The size varied from
26-175 mm carapace with (C W) in P. sanguinolentus, 66-115 mm C W in P.
pelagicus and 51-120 mm C W in C cruciata. In P. sanguinolentus a regular
pattern of dominance of one sex over the other was absent. Maturity study
indicated spawning throughout the year and the size at first maturity in female
was 82.99 mm C.W. The L , K (annual) and t^ (annual) values were 172.9 mm
C.W., 1.4939 and -0.0482 respectively in male. The respective values in female
were 161.8 mm C.W., 1.574 and -0.0635.
 
Publisher CMFRI/ICAR
 
Date 1998
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/185/1/Article_04.pdf
Sarada, P T (1998) Crab fishery of t h e Calicut coast with some aspects of t he population characteristics of Portunus sanguinolentus, P. pelagicus and Charybdis cruciata. Indian Journal of Fisheries, 45 (4). pp. 375-386.