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研究了山东半岛南部鱼产卵场体长 2 .5～ 17.9mm的鱼仔、稚鱼的摄食。鱼仔、稚鱼主要饵料为原生动物的鼎形虫、单角铠甲虫、三角铠甲虫 ,小型桡足类的卵、桡足类的无节幼体和桡足幼体。桡足类种类为墨氏胸刺水蚤、小拟哲水蚤、克氏纺锤水蚤、双刺纺锤水蚤和拟长腹剑水蚤等小型桡足类。各种饵料所占的个数的百分比为 :鼎形虫 2 .2 % ,单角铠甲虫 7.6% ,三角铠甲虫 3.3% ,桡足类的卵 4 2 .2 % ,无节幼体 30 .4 %、桡足幼体 14.1%。鱼仔、稚鱼的摄食率为 16.2 %。摄食活动主要在白天 ,在水的中下层进行。由于摄食率低 ,肠道饱满度差 ,饥饿可能是引起鱼仔、稚鱼死亡的主要原因。
The feeding of juvenile anchovy and larvae with body length of 2.5-17.9 mm in spawning grounds of anchovy in southern Shandong Peninsula were studied. Catfish, larvae The main diet for protozoan tripod insects, unicorn armadillos, triangular armor beetles, small copepods eggs, copepods nauplii and copepod larvae. Copepods species Moxibustion Daphnia magna, a small water foxtail, Kirschner wire Daphnia, Spirodela spinosus and the proposed long belly Daphnia small copepods. The percentages of various kinds of bait were as follows: tripod worms 2.2%, uniaxial armor beetles 7.6%, triangular beetle 3.3%, copepod eggs 42.2%, nauplii 30.4 %, Copepod larvae 14.1%. Catfish, juvenile feeding rate was 16.2%. Feeding activities mainly in the daytime, in the lower water. Due to low food intake, poor bowel, hunger may be the main cause of catfish and juvenile deaths.