东江外来齐氏罗非鱼个体繁殖力初步研究  

Study of individual fecundity of Tilapia zillii in the Dongjiang River

作　　者：何耀升[1,2] 林小涛[1,2] 孙军[1,2] 张鹏飞[1,2] 

机构地区：[1]暨南大学水生生物研究所 [2]热带亚热带水生态工程教育部工程研究中心,广州510632

出　　处：《生态科学》2013年第1期57-62,共6页Ecological Science

基　　金：国家科技重大专项项目(2009ZX07211-009)

摘　　要：于2011年1月至2011年12月,逐月在东江采集齐氏罗非鱼样本,研究其个体繁殖力。结果表明,齐氏罗非鱼属于多次产卵类型,在东江的繁殖期约为5月初到10月底。个体绝对繁殖力（F）在4913~13129粒之间,平均为7991粒;一次产卵量（Fb）在1997~6369粒之间,平均为4114粒;体长相对繁殖力（FL）在49~83粒/mm之间,平均为62粒/mm;体质量相对繁殖力（FW）在66~154粒/g之间,平均为98粒/g。个体绝对繁殖力及一次产卵量与体长（L）呈幂函数相关,与体质量（W）及净体质量（Wn）呈线性相关。相关回归式分别为：F=2.186L1.6886;Fb=0.7243L1.7796;F=50.184W＋3627.3;Fb=25.008W＋1952.2;F=58.783 Wn＋3553.4,Fb=28.939 Wn＋1942。The specimens of Tilapia zillii for individual fecundity study were collected every month from January 2011 to December 20011 in the Dongjiang River.It was found that T.zillii was a multiple spawner and the breeding seasons were from early May to the end of October.The sizes of mature eggs in females were from 1.20 to 1.90 mm.Absolute fecundity（F）ranged from 4913 to 13129 eggs,with the mean of 7991 eggs.Eggs produced in one spawning（Fb） ranged from 1997 to 6369 eggs,with the mean of 4114 eggs.The individual fecundity to standard length（FL） varied from 49 to 83 eggs/mm,with the mean of 62 eggs/mm,and the individual fecundity to body weight（FW） varied from 66 to 154 eggs/g,with the mean of 98 eggs/g.Fecundity showed curvilinear relationships with standard length（L）,e.g.,F = 2.186L1.6886and Fb=0.7243L1.7796,and linear relationships with body weight（W） and weight of eviscerated fish（Wn）,e.g.,F = 50.184W ＋ 3627.3,Fb=25.008W ＋ 1952.2,F = 58.783Wn＋ 3553.4,and Fb= 28.939Wn＋1942.

关 键 词：齐氏罗非鱼 产卵类型 卵径 个体繁殖力 东江 

分 类 号：X82[环境科学与工程—环境工程]