Genetic Diversity And Biology Characters Of The Four Major Chinese Carps In The Ganzhou Reach Of Ganjiang River

1. A total of 79 fish species belong to 7 orders 17 families were found in the in Ganzhou reach of Ganjiang river. The fish resources are younger and smaller.2. Analyze on 372 number composed of the four major chinese carps. The results as the proportion of four major chinese caips is that grass carp＞silver carp＞black carp＞bighead carp. The mian length of black carp is above 60cm accounted for 83.33%,and the mian length of grass carp,sliver carp,bighead carp are below 40cm, accounted for 75.63%,91.34%,88.88%.3. Study on age, body length, body weight,proportion of sex and so on of the four major chinese carps reproduction group.4. The Genetic diversity of the four major chinese carps were P=82.75%, H*=0.2833,I*=0.4263;P=80.65%,H*=0.2578,I*=0.3857;P=78.57%,H*=0.3224,I*=0. 4694;P=83.3.3%,H*=0.3563,I*=0.5136.5. This article has Analyzed the affect from WanAn dam to the Spawning sites of four major chinese carps. the Spawning sites of four major chinese carps is in Tiger Point of ChuTan Villages,is 16 km far form follow the Interchange of ZhangJiang, the maximum spawning is from 2-8 July in 2009, the fecundity are 7330000 eggs.