鱼类自残行为研究进展

Research on the cannibalism in teleost fish

鱼类自残现象是鱼类之间相互残杀(食)的行为,除了遗传因素、鱼体的规格差异可引起自残现象外,大量的环境因素同样影响着自残行为发生的时间、频率和强度。本文综述了集约化养殖条件下,影响鱼类自残行为的主要环境因子,包括营养状态、光照(强度、周期)和养殖密度等,并简单介绍了遗传背景对鱼类自残行为的影响。结合鱼类自残行为发生机理的研究,进一步探讨了减少鱼类自残行为发生的措施。

Cannibalism is a phenomenon frequently occurred in teleost fish,especially under intensive culture conditions.Besides genetic background and size heterogeny,multiple environmental factors,including the nutrients and trophic type,photoperiod and culture density,have been demonstrated to affect the cannibalism in teleost fish as well.In this article,cannibalistic behaviour in fish is reviewed,and the measures to prevent the occurrence of this phenomenon are also discussed.