摘要
真鲷ＰａｇｒｏｓｏｍｕｓｍａｊｏｒＴｅｍｍｉｎｃｋｅｔＳｃｈｌｅｇｅｌ早期发育阶段的摄食具有明显的昼夜节律性。摄食主要在白天进行，以０６：００─１０：００和１４：００─１８：００摄食活动最为活跃，表现出近晨昏摄食的特点。在晚上黑暗状态下，只有幼鱼表现出明显摄食，仔、稚鱼基本不摄食．这一结果为真鲷人工养殖提供给饵的科学依据。
eeding rhythms of larval, juvenile and young red sea bream (Pagrosomus major Temminck et Schlegel) were studied in the experimental condition. The feeding intensity, feeding rate and relative feeding intensity were calculated. The experiment results showed an obvious circadian rhythm of feeding in the stage of larvae, juvenile and young. Feeding mainly proceeded by day, which amounted to more than 85% of the total feeding in one day (24h), especially during 06: 00 - 10: 00 a. m. and14: 00 - 18: 00 p. m.. It seemed that the rhythm was characterized by twilight feeding . Young fed obviously in the darkness of night, larvae and juvenile hardly did. During the development of larvae, juvenile and young, there were some changes of the feeding rhythm which closely correlated with the development of sense organs and with the changes of ecological habits.
出处
《热带海洋》
CAS
CSCD
1994年第2期82-87,共6页
基金
国家自然科学基金
关键词
真鲷
早期发育
摄食节律
Red sea bream (Pagrosomus major Temminck et Schlegel)
early development stage
feeding rhythm
