作　　者： ; ; ; ; ; ; ;

机构地区： 中国水产科学研究院珠江水产研究所

出　　处： 《广东农业科学》 2011年第11期141-144,共4页

摘　　要： 在不同条件下,对革胡子鲶幼鱼对本地胡子鲶残杀行为进行了研究。结果表明:(1)体重比例不同的两种幼鱼,本地胡子鲶的死亡率会随着比例的增大而增大,但是当两种胡子鲶的幼鱼大小达到一定比例时,死亡率就会随比例的增大而变小。(2)放养密度高低、是否有充足饵料对日死亡率影响显著。(3)温度和光照对革胡子鲶的残杀行为有影响,但差异不显著。(4)有无遮蔽物对革胡子鲶的残杀行为影响很小。说明高密度养殖、是否有充分的饵料、温度和个体大小的差异是导致胡子鲶幼鱼发生残杀行为的主要原因,光照会诱发和促进残杀行为的发生。 The study was conducted with Clarias gariepinus and Clarias fuscus larvae in different treatments. The results showed that： （1） The cannibal rates at high proportion were significantly higher than that at low proportion before reached a certain proportion. （2）The daily cannibal rate was markedly influenced by the stocking density and diet. （3）The temperature , the illumination and the hidden material alse affected the cannibalism. （4）There were few of influences for the cannibalism.Based on these observations above,unfitted eaten diet and stocking densityas well as differences in body size for larvae were considered to be the significant factors affecting cannibalism uring the larval period; the illumination and high culturing temperature could induce and stimulate the cannibalism.

关 键 词： 革胡子鲶 本地胡子鲶 幼体 残杀行为

领　　域： [农业科学] [农业科学]