Growth and mortality of Oligosarcus hepsetus (Cuvier, 1829) (Characiforms, Characidae) in Serra do Mar State Park, Santa Virginia Unit, Sao Paulo, Brazil

被引:2
|
作者
Carmassi, Alberto Luciano [1 ]
Rondineli, Giulianna Rodrigues [1 ]
Gomiero, Leandro Muller [1 ]
de Souza Braga, Francisco Manoel [1 ]
机构
[1] Univ Estadual Paulista UNESP, Dept Zool, Inst Biociencias, BR-13506900 Rio Claro, SP, Brazil
来源
BIOTA NEOTROPICA | 2011年 / 11卷 / 02期
关键词
dogfish; neotropical freshwater species; population parameters; length frequencies; Atlantic Forest; PARAMETERS; DYNAMICS; LENGTH; FISHES;
D O I
10.1590/S1676-06032011000200004
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Growth and mortality parameters were estimated for Oligosarcus hepsetus caught in the Serra do Mar State Park, Nucleo Santa Virginia. Monthly length frequencies distributions were analyzed with the ELEFAN method within the FISAT program, using the seasonal version of the Von Bertalanffy's growth curve. The instantaneous rate of natural mortality was calculated using the empirical formula proposed by Pauly. The estimated parameters were K = 0.72, L infinity = 23.3 cm, C = 0.3, Wp = 0.7 and M = 1.25. These parameters corroborate the characteristics of a predator species with long reproductive period, spawning parceled out without parental care, and that lives in a typical river of Atlantic forest.
引用
收藏
页码:39 / 43
页数:5
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