摘要
为了解宝石鲈昼夜摄食规律和日摄食量,采用饱满度指数法在7-9月对124尾宝石鲈在不同昼夜节律下的摄食节律和日摄食率进行了研究。试验结果表明,9:00-17:00为摄食高峰期,凌晨1:00摄食活动最弱,翌日5:00摄食强度明显升高。7-9月,该鱼的日摄食率(用占体质量的百分比表示)分别为6.07%、3.34%、2.37%。宝石鲈有明显的摄食节律,属于白天摄食类型。
The daily feeding rhythm and daily food intake were studied in 124 samples of jade perch Scortum barcoo with body weight of 235.84-491.63 g at water temperature of 25-27 ℃ by intestinal fullness index.The feeding intensity peak was observed between 9：00-17：00,decreasing after 17：00 and the minimum at 1：00.The daily food intake expressed in percentage of the total body weight was found 6.07%,3.34%,and 2.37% in July,August and September,respectively.
出处
《水产科学》
CAS
北大核心
2012年第1期28-31,共4页
Fisheries Science
基金
北京市科技计划项目(Z080005032508019)
北京市农林科学院所级优秀科技创新团队培养基金资助项目
关键词
宝石鲈
摄食节律
日摄食率
Scortum barcoo
feeding rhythm
daily food intake
