大口黑鲈仔幼鱼的饵料选择和生长的研究  

A STUDY OF GROWTH AND FOOD SELECTION OF LARGEMOUTH BASS FRY

作　　者：张韵桐[1] 夏金华[1] 杨正华 

机构地区：[1]湛江水产学院养殖系

出　　处：《湛江水产学院学报》1992年第1期19-24,共6页

摘　　要：全长5.8—6.4mm 具卵黄和油球的仔鱼开口摄食轮虫和无节幼体。稚鱼选择枝角类为主。幼鱼对桡足类的选择明显地高于枝角类,对轮虫和无节幼体则无选择性。早期幼鱼还摄食摇蚊幼虫,虾,草鱼苗和本种小鱼。26日龄幼鱼平均日增长1.18mm,日增重22.31mg。数理统计分析确定,全长与日龄呈直线关系。体重与日龄,全长对体重均呈幂函数关系。This paper deals with the experiments of growth and food selection of largemouth bass fry (Micropterus salmoides).The fry began to feed rotifer and copepod nauplii when their yolk sac still remained.Sequentially,selection shifed to cladocerans for 8.8-23.0 mm fish,to adult copepods for23.6-30.3mm fish.and,lastly,the 30.5-35.5mm fish ate chironomids,shrimp,and themselves.The fry increased in mean total lenght from 3.0mm on the first day to 33.8 mm on day 26 (mean daily length gain 1.18mm and weight gain 22.32mg).The relationship of total length with age falls on a straight line,but that of we- ight with age is exponential.The regression equation of total length,weight and age is det- ermined through calculation.

关 键 词：饵料选择 生长 大口黑鲈幼鱼 

分 类 号：S963.821.1[农业科学—水产养殖]