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蓝鳃太阳鱼(Lepomis macrochirus Ra-fincsque)属鲈形目太阳鱼科,原产于北美水域,目前在南非、日本及东南亚的湖泊、水库中都有分布。我国于1987年引进。水文旨在研究蓝鳃太阳鱼在池塘养殖及实验室条件下的食性,为养殖及驯化该鱼提供依据.一、材料和方法材料鱼是1989年5—7月从本所试验塘中捕获。随即测量长度、称重,解剖后测量各消化器官长度,将消化道用乙醇及鲁哥氏液固定后备镜检。根据镜检后的食物组成,再分别以枝角类、桡足类、丝状藻类、浮游植物和人工饲料四类食物进行水族缸试养,并以鱼类胃内这四类食物的饱满指数为依
Lepomis macrochirus Ra-fincsque is a Percian sunfish family native to North American waters and presently distributed in lakes and reservoirs in South Africa, Japan and Southeast Asia. Our country was introduced in 1987. Hydrology aims to study the feeding habits of blue gill sunfish under pond culture and laboratory conditions, and provide the basis for breeding and domestication of the fish.Materials and Methods MaterialsFish was collected from our pond in May-July 1989. Then measure the length, weighing, measuring the length of each digestive organ after dissection, the gastrointestinal tract with ethanol and Lugol’s fluid back-up microscopy. According to the microscopic examination of the food composition, rehmanniae, copepods, filamentous algae, phytoplankton and artificial diet four kinds of food aquarium trial, and the fish stomach full index of these four foods As by