摘要
对大鳍鱯的头骨进行了形态学观察,并与鲶科和鮡科鱼类头骨进行了比较.发现以大鳍鳠为代表的鲿科鱼类头骨既有相似于鲶科的一面,又有相似于鮡科的一面,从而肯定了鲿科的演化地位介于鮡科与鲶科之间.从大鳍鳠头骨上枕棘后端圆、不分叉,由于髓弧间板插入而不直接与背鳍第一基鳍骨相连等特征,确认大鳍鳠属Osteobagrus亚属.
The skull of Mystus macropterus bleeker, a small economic Bagridae catfish distributed in the Changjiang River and the Zhujiang River, is described in this paper. A comparative study of the skulls of M. macropterus and Siluridae and Sisoridae catfish was made. It is discovered that Bagridae fish are similar to Siluridae in some aspects and to Sisoridae in some other aspects in skull structure. So it is suggested that Bagridae is between Sisoridae and Siluridae in evolutionary status.The supraoccipital spine of the skull .of M. macropterus is round posteriorly, and the 1st pterygiopfaore is kept away from it by the intervention of the interneural shield. Based on this and some other features of skull structure. M. macropterus is placed in the sub-genus Osteobagrus,It is suggested that the morphological similarities of the skull of M. macropterus to that of Siturns meridianlis Chen (Siluridae) is derived from adaptive convergence.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
1990年第3期399-404,共6页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
大鳍HU
Chang科
头骨形态
Bagridae catfish
Myslus macropierus
skull morphology
adaptive convergence
