【摘要】 乌鳢仔龟的昼夜摄食节律和日摄食率的研究结果表明，乌鳢仔鱼摄食具明显昼夜节律性，其饱满指数２１时最高，１２时最低。每天在６～１５时之间停食３ｈ左右。日摄食率随饵料密度高低而变化，饵料密度为１０～１５个／ｍｌ、７～８个／ｍｌ和５～６个／ｍｌ时，日摄食率分别为１３．７１％、７．０４％和３．４９％。更多还原

【Abstract】 This paper deals with the day and night feeding rhythm and the daily feeds intake rate of snake-head fish fry,(Channa argus).The results indicated that day and night feeding of fries showed apparent rhythm. The peak index of fullness lay at 21:00 and the lowest index at 12:00.Time of no feeding within a day was about 3 hours that occurred during 6:00～15:00.The daily feeds intake rate varied with the food density. When the plankton density was organisms 12～15,7～8 and 5～6 per ml,the daily feed intake rates were 13.71%,7.04%and 3.49%respectively.更多还原