斑尾复鰕虎鱼的生物学研究

STUDY ON THE BIOLOGY OF SYNECHOGOBIUS OMMATURUS

斑尾复鰕虎鱼系沿海及河口的习见种类,矛尾复鰕虎鱼为它的同物异名。该鱼属底栖肉食性鱼类,主要以小鱼和小虾蟹为食。在繁殖期间产两次卵,属多次产卵类型,产卵后不久死亡,寿命为壹年。斑尾复鰕虎鱼为鰕虎鱼科中的大型种类,其体长和体重的相关关系式为:W=0.01739^(2.827?),生长方程为:L_t=41.24[1-e^(-0.0?(t+0.0?45?)],W_t=606.15[1?e^(-0.0?(t+0.0645?)]^(2.8?),体重生长拐点 t_r=11.5(月龄)离拐点处体重为 176.5克。本文分析了斑尾复鰕虎鱼在养虾业中的危害情况,并探讨其资源的发展。

A study has been conducted on the morphological features, repro-duction, feeding and growth of Synechogobius ommaturus (Richardson). S. omma-turus is a common fish that occurs in the coast and estuary area of China. S. hasta(Temminck et Schlegel) is the synonym of S. ommaturus. It released two batchesof eggs during its reproductive period which is from February to May. After thespawning the parent fish die off. The lifespan is only one year. The relationship between its weight (W) in gm and body length (L) in cmcan be expressed by the formula: W = 0 .01739L^(2.8279). The relationship between itsage (T) in months and body length (L)can be expressed by the equation: L = 41.24[1 - e^(-0.08991(t+0.06459))]. The age (T) and weight (W) relationship can be denoted bythe equation: W_t = 606. 15[1 - e^(-0.08991)(t+0.06459)]^(2.8279). The growth inflection pointt_r = 11 .5, corresponding to W = 176. 5gm. S. ommaturus is a predatory fish. Its main food are small fish of various kinds,shrimps and crabs. It is harmful to oriental prawn.