武汉地区大银鱼胚胎发育的观察及其移植

OBSERVATION OF THE DEVELOPMENT OF EMBRYOES OF Protosalanx hyalocranius IN WUHAN REGION AND THEIR TRANSPLANTING PROBLEM

在室内自然水温３．８～９．０℃时，大银鱼胚胎孵化需７９１．４８ｈ；仔鱼孵出到卵黄囊基本消失需２８８ｈ，孵出第６～７ｄ的仔鱼进入混合营养阶段，仔鱼具较强的趋光性。在湖北省移植大银鱼能获得成功。

When the natural room water temperature in 3.8～9.0℃, the incubation time of Protosalanx hyalocranius is 791.48 housr. From newly hatched to its yolk consumed, it takes a larva 288 hours. 6 or 7 days after being hatched, the larva enters the stage of mixotrophism. The larva has strong phototaxis. P. hyalocranius can be transplanted successfully in Hubei Province.