长薄鳅生物学特征的初步研究

A Preliminary Study on the Biological Characteristics of Leptobatia elongata (Bleeker)

定期调查和观测了长薄鳅［Ｌｅｐｔｏｂａｔｉａｅｌｏｎｇａｔａ（Ｂｌｅｅｋｅｒ）］的形态特征、年龄与生长、繁殖习性、栖息习性等生物学特征，探讨了有关长薄鳅的年龄鉴定和渔业利用问题。结果表明：长薄鳅是栖息于底层的中型鳅科鱼类，其生长速度中等，体长体重关系式为：ｍ＝３．８１２×１０－４Ｌ２．３６９，４～５份繁殖，成熟系数为０．８８％～１．７６％。

The biological characteristics of the Leptobatia elongata (Bleeker) in terms of its morphology, age and growth, reproduction, and habitat was reported. By normal observation the following conclusions are reached: Leptobatia elongata (Bleeker) is one kind of medium sized loach family fish that inhabits at the rivers bottom; it grows with a medium speed, the relation formula between its length and weight is m=3.812×10 -4 L 2.369 ; with a ripe coefficient 0 88%￣1.76%, it can spawn from April to May every year. On the other hand, the both problems how to determine its age and how to utilize it in the culturing pratice are discussed at the same time.