Population parameters of `Corvina' (Plagioscion squamosissimus) in the Barra Bonita Reservoir, Brazil
1998
De Souza Braga, F.M. (Sao Paulo State Univ., Sao Paulo (Brazil). Aquaculture Center)
Estimates of the growth parameters (Lsuboo and K), mortality coefficients (Z, M and F) and exploitation rate (E) for the sciaenid Plagioscion squamosissimus are presented. The following results were obtained: 1.) for males: Lsuboo=44.2 cm, K=0.30/year, Z=0.82/year, M=0.66/year, F=0.16/year, and E=0.20; and 2.) for females: Loo=68.4 cm, K=0.22/year, Z=0.91/year, M=0.47/year, F=0.44/year and E=0.49. Females are more heavily fished than males. Artisanal fishing, carried out with gill nets, is mainly directed toward the young section of the population and individuals reproducing for the first time
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