摘要
在大量比较形态研究的基础上 ,选择了 5个特征方面 2 8个性状 ,以支序分析方法探讨了分布于亚洲的蝮亚科蛇 5属 1 4种的系统发生关系 .结果表明 :该亚科蛇类可以划分为 3个不同的类群 ,第一个类群包括尖吻蝮属、瘤鼻蝮属、红口蝮属 ,它们具有较多的祖征 ,代表了该科中的原始一类 ,其中红口蝮属可能是最原始的一属 ;亚洲蝮属单独形成一个类群 ;第三个类群为原广义的烙铁头蛇属 ,包括竹叶青蛇属、原矛头蝮属、烙铁头蛇属、黑绿烙铁头蛇属、莽山烙铁头蛇属 ,在该支中 ,莽山烙铁头蛇属和黑绿烙铁头蛇属形成姊妹群 ,有较多的衍征 ,应代表高级的属 ,现竹叶青蛇属并不形成单系 ,它们是一个复杂的类群 ,其系统关系有待于进一步深入研究 .
characters of 5 aspects, such as external feature, skull, cranial muscles, hemipenis and reproduction, are selected for comparing the phylogenetic relationships among 9 genera, 14 species of Asia crotalinae by a cladistic approach. The results indicate that the crotalinae snakes can be divided into three groups. The first group includes Deinagkistrodon, Hypnale,Calloselasma , representing probably the primitive genera with much more plesiomorphic characters.In this group, Calloselasma is most primitive genus in the subfamily. The second group is only Gloydius. Trimeresurus (sensu lato ), including Ermia, Trimeresurus(sensu stricto),Ovophis,Protobothrops and Tropidolaemus ,constitute the third group. Ermia and Tropidolaemus are sister groups, exhibiting many derivered characters, so they are higher genera. The species currently included in Trimeresurus (sensu stricto ) do not form a natural group. It is yet unclear whether they are monophyly or not, hence their taxonomic relationship needs further study.
出处
《生命科学研究》
CAS
CSCD
2000年第3期262-266,280,共6页
Life Science Research
基金
宜宾师范高等专科学校发展基金资助
关键词
蝮亚科
系统发生
支序
亚洲
crotalinae
cladistic
phylogenetic
Asia
