鱼类早期生活史的营养与摄食

鱼类早期生活史可划分为胚胎期、仔鱼期和稚鱼期,其营养包括内源性、外源性和混合性三种类型。仔鱼必须在卵黄耗尽前的短时间内建立起外源性摄食,否则,便进入饥饿期。仔鱼的初次摄食率和摄食强度均取决于仔鱼的摄食效率,并随着日龄的增加而增加。摄食节律主要受光照强度的影响。仔鱼对饵料的选择随着日龄的增加而变化,同时与饵料的大小、种类、密度等因素有关。

Nutrition and Feeding of Early Life History of Fishes

Early Life History of Fish(ELHF) could be divided into embryonic,larval and juvenile stages.There are three types of endogenous,exogenous and mixed nutrition during Early Life History of Fish. Larvae must establish external feeding during the short time before yolk exhaustion,or else,reach to the starvation stage.Both the initial feeding and the feeding intensity which depend on the feeding effectiveness,increase with the development procedure. The feeding rhythm is mainly affected by light intensity.Food selection which varies with larval days increasing,is related to food size,species and density.