中国海洋大学学报（自然科学版）2017，Vol.47Issue(5)：57-64,8.DOI:10.16441/j.cnki.hdxb.20160100
花鲈初孵仔鱼饥饿不可逆点的确定及摄食节律研究
Determination of Irreversible Starvation Point and Feeding Rhythm of Lateolabrax maculatus Larvae
摘要
Abstract
In order to determine the irreversible point and feeding rhythm of Lateolabrax maculatus larvae,L.maculatus larvae were obtained by artificially induced spawning and hatching at (21±1) ℃ and salinity 26.The results showed that the larvae opened mouth in 4 days after hatching,mixed nourishment in only 2 days,with yolk sac completely absorbed in 6 days after hatching.The total length of the larvae of starvation group increased first and decreased then with some larvae exhibited a physical abnormality.Under sunlight (500～800 lx) in daytime and lamplight (200～250 lx) in night,the feeding rate of early-stage larvae (5 days after hatching) was higher than 50％ at 14:00 and 20:00,and the feeding rate of late-stage larvae (11 days after hatching) was higher than 50％ at 8:00,14:00and 20:00.Therefore,L.maculatus typically fed only in daytime,and the feeing peak period gradually prolonged with growth.At (21±1)℃,the best feeding time was on day 4 after hatching,the irreversible starvation point arrived on days 9～10 after hatching,and the feeding period sustained from afternoon to evening.关键词
花鲈/仔鱼/饥饿/不可逆点/摄食节律Key words
Lateolabrax maculatus/larva/starvation/irreversible starvation point/feeding rhythm分类
农业科技引用本文复制引用
王晓龙,温海深,张美昭,李吉方,张凯强,王伟,刘阳,田源,常志成..花鲈初孵仔鱼饥饿不可逆点的确定及摄食节律研究[J].中国海洋大学学报（自然科学版）,2017,47(5):57-64,8.基金项目
国家“十二五”国家科技支撑计划项目(2011BAD13B03) （2011BAD13B03）
东营市渔业科技项目(20150217)资助 Supported by the Plan in the Nation Science & Technology Pillar Program during the Twelfth Five-year Plan Period(2011BAD13B03)and Fishery science and technology project of Dongying City(20150217) （20150217）
