2006年库兰德和费雷拉描述的凯氏丽鱼引入巴西东南部的人工湖后的繁殖情况。

Reproduction of Cichla kelberi Kullander and Ferreira, 2006 introduced into an artificial lake in southeastern Brazil.

作者信息

Gomiero L M, Villares Junior G A, Naous F

机构信息

Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, SP, Brazil.

出版信息

Braz J Biol. 2009 Feb;69(1):175-83. doi: 10.1590/s1519-69842009000100023.

DOI:10.1590/s1519-69842009000100023

PMID:19347162

Abstract

The objective of this study was to characterize the reproduction of Cichla kelberi in an artificial lake, located in the municipality of Leme, in the state of São Paulo, Brazil. Breeding occurred in spring, and summer. The L(50) and the L(100) of this species were 192 and 235 mm (L(50)), for males and females, respectively, and 290 mm (L(100)) for both sexes. Spawning was parceled. The oocytes matured at a size of 428.4 microm, reaching their maximum at 2,203.2 microm. A mean of fecundity were of 12,129.2 oocytes, with the mean of oocytes in each batch of 4,897.7. This species has external fertilization, is nonmigratory, and with parental care of the young. Various attributes of the peacock bass make their introduction a temptation. However, due to their feeding and reproductive characteristics, they have no natural predators, making it difficult to control their population growth or eradicate them.

摘要

本研究的目的是描述巴西圣保罗州莱梅市人工湖中的凯氏丽鱼的繁殖情况。繁殖发生在春季和夏季。该物种雄性和雌性的L(50)分别为192毫米和235毫米（L(50)），两性的L(100)为290毫米。产卵是分批进行的。卵母细胞在428.4微米大小时成熟，在2203.2微米时达到最大尺寸。平均繁殖力为12129.2个卵母细胞，每批卵母细胞的平均数为4897.7个。该物种为体外受精，不洄游，且亲代照顾幼鱼。孔雀鲈的各种特性使其引入具有吸引力。然而，由于它们的摄食和繁殖特性，它们没有自然天敌，因此难以控制其种群增长或根除它们。