摘要
2008年4月下旬至5月上旬,在金沙江攀枝花段共采集了160尾中华沙鳅(Botia superciliaris),对其繁殖生态学进行了初步研究。结果表明,中华沙鳅的绝对怀卵量最大为10681粒,平均为6780粒;相对怀卵量最大为443粒/g,平均为269粒/g。中华沙鳅性比接近1∶1,产漂流性卵,产卵类型为一次性产出,繁殖高峰期为5~6月。为保护我国鱼类的生物多样性,应加强对中华沙鳅繁殖种群的保护。
160 Botia supercilliaris had been collected in the Jinsha River within Panzhihua from April to May,2008,and then a preliminary study on their reproductive bioology was carried out.The results showed that the largest value of absolute fecundity and relative fecundity were 10 681 eggs/fish and 443 eggs/g body weight respectively;the average value of absolute fecundity and relative fecundity were 6 780 eggs/fish and 269 eggs/g body weight respectively.B.supercilliaris is a kind of fish with floating eggs and i...
出处
《水生态学杂志》
北大核心
2010年第2期38-41,共4页
Journal of Hydroecology
基金
湖北省教育厅自然科学重点项目(D200726003)
孝感学院资助项目(z2007009)
关键词
中华沙鳅
繁殖力
金沙江
Botia supercilliaris
Reproductive capacity
Jinsha River
