摘要
StudiesontheosteologyofthebagridcatfishesfromtheJialingRiver(IV):anapproachtothephyloge-neticrelationshipZhangYaoguang;WangDe...
Based an the cladistic character analysis of the ten osteological features of 11 bagrid catfish-escollected from the Jialing River, an approach to the phylogenetic relationship of these fishes were es-tablished accordingly. These bagrid catfishes can be divided into two sister-group A and B. Group Aincludes genera Leocassis and Pseudobagrus.Gruup B includes senera Pelleobagrus and Mystus. Leocassisbears nine of the plesiomorphies,and therefore is the most primitive genus of the four. Mystus.,whichbars all the apomorphies, is the most specialized. Pseudobagrus and Pelteobagrus are relatively specializedfor their obvious mosaic distribution of characters. The evolutionary trends of Bagridae are towards flatskull , wide mouth, elongated body form, short supraoccipital spme and forked caudal fin. Based onthe general differences in skeletal morphology, Pelteobagrus can be divided into two specific groups. Pseu-dobagrus brevicaudatus (Wu)should restore its original taxonomic position, and its original name Leocassisbrevicaudatus Wu.
出处
《西南师范大学学报(自然科学版)》
CAS
CSCD
1995年第4期432-439,共8页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
Cang科
鱼类
骨学
系统
发育关系
osteology
phylogeny
cladistics
bagridae, osteichthyes