天津大银鱼仔、幼鱼的食性

A Preliminary Study on the Feeding Habit of Fry and Juvenile Eperlanus Chinensis Basilewsky in Tianjing

１９９５年３月至５月对天津地区北塘、黄港二库、东丽水库的大银鱼仔、幼鱼的食性进行了分析研究。成鱼为肉食性鱼类，但在仔、幼鱼阶段主要摄食浮游生物中的原生动物，肠道中未找到枝角类，仔、幼鱼阶段的食性不是专一的，随水体中饵料生物组成的变化而变化。

Analysis and study on feeding habit of fry and juvenile Eperlanus Chinensis Basilewsky from Beitang, Huanggang and Dongli reservoirs in Tianjing area were conducted from March to May 1995.The adult fish was carnivorous , but fry and juvenile fish ferd mainly on Protozo in planktons. No copepod was found in their intestine tracts. Therefore the feeding habit of fry and juvenile fish was not specific, but varied with the variation of food organisms composition in water body plankton as a main part.