舟山褐牙鲆(Paralichthys olivaceus)仔鱼摄食和生长的研究  

Study on feeding and growth of larval Zhoushan flounder(Paralichthys olivaceus)

作　　者：史会来[1] 楼宝[1] 毛国民[1] 骆季安[1] 

机构地区：[1]浙江省海洋水产研究所,浙江舟山316100

出　　处：《南方水产》2008年第4期21-25,共5页South China Fisheries Science

基　　金：浙江省科技计划项目(2006F12002;2007C22038;2007F10006)

摘　　要：试验研究了褐牙鲆Paralichthys olivaceus仔鱼的摄食和生长。结果表明，仔鱼初次开口摄食时间在6日龄（16～18℃），初次摄食率为30％，8日龄饥饿仔鱼最大初次摄食率为65％，孵出后第9天达到不可逆点（PNR），混合营养期为3d左右。初次摄食强度和初次摄食率开始时较低，在卵黄囊耗尽时达最高，然后下降。随着饥饿时间的延长，仔鱼出现“负增长”，孵化第11天存活率仅为10％，12日龄全部死亡。The experiment was conducted to study feeding and growth of Paralichthys olivaceus larvae. Results showed that larvae began to fed at the age of six days at 16 - 18℃, and the feeding rate was 30% . The highest feeding rate was 65% at the age of 8 days. P. olivaceus larvae arrived the point-of-no-return （PNR） at the 9th day. The period of mixed nutrition of the larvae was 3 days. The initial feeding intensity and the feeding rate were slowly increased to the peak when the yolk sac almost exhausted and decreased after that. With the starvation prolonged, unfed larvae entered a negative growth. The survival rate was 10% at the llth day after hatching.

关 键 词：褐牙鲆 仔鱼 摄食 生长 

分 类 号：S965.399[农业科学—水产养殖]