论文部分内容阅读
为探讨河蟹生长特点以及渔获物与放养规格的关系 ,用有序样品的Fish聚类分析法首次对中华绒螯蟹的渔获物组成进行分析。结果显示 ,黄河三角洲广南水库沉砂池 2 0 0 0年河蟹渔获物可以分为 3个群体 ,与其放养的 3个不同规格群体相对应 ;据此推算了不同放养规格的回捕率 ;并对雌、雄生长和性成熟的差异以及合理的放养规格进行了探讨。
In order to explore the characteristics of crab’s growth and the relationship between catch and stocking specifications, the catch composition of Chinese mitten crab (Eriocheir sinensis) was analyzed for the first time by using Fish cluster analysis of ordered samples. The results showed that crab catches from 2000 grit chamber of Guangnan Reservoir in the Yellow River Delta could be divided into three groups corresponding to the three different size groups of stocking stock, and the recovery rates of different stocking specifications were calculated. The differences in growth and sexual maturity between male and female, and the reasonable stocking specifications were also discussed.