洪湖黄颡鱼的生长,食性与渔业地位

研究了洪湖中黄颡鱼的生长和食性，结果表明，洪湖中黄桑鱼以２龄和３龄鱼最多，分别占３４．５％和３２．４％，体长主要集中在８．０￣１５．０ｃｍ之间，体重集中在７．６￣５８．８ｇ之间，其体长和体重的相关方程符合ｙ＝ａｘ＾ｂ模式；洪湖黄颡鱼是以底栖小型水生动物为食的肉食性鱼类，喜食幼虾，水生昆虫等。探讨了洪湖黄颡鱼在洪湖流域中的作用和地位，并提出在洪湖中保护和增殖黄颡鱼的建议。

Growth,Diet and Fishery Role of Pelteobagrus fulvidraco in Honghu

The growth and diets of Pelteobagrus fulvidraco ( Richardson) were studied. The results showed that 2 and 3years old fish accounted for 345% and 324% of the population respectively. Their body length was mainly 80150 cm,while their body weights ranged from 76 g to 588 g. The correlation between body length and body weight fit the model y=ax\+b. Pelteobagrus fulvidraco was a kind of carnivorous fish fed on benthon aquatic animals, with special fondness on young shrimps, aquatic insects etc. The fishery role of Pelteobagrus fulvidraco in Honghu lake was discussed,and suggestions on the protection and reproduction of Pelteobagrus fulvidraco in Honghu lake were put forward.