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摘要：蝰科蝮亚科蛇类（Crotalinae）具有独特的热感应器官——颊窝，能够对温血动物产生的热信号进行识别、定位以完成捕食、自卫等行为。本课题主要集中于颊窝的基础构造，尝试将颊窝的结构与蝮亚科蛇类的分类学基础联系研究，借以探讨蝮亚科主要属级分类单位的颊窝构造的相关性。实验使用Micro-CT仪器扫描实验蛇，对扫描后仪器系统重构的3D模型进行测量，所得数据进行分析。数据分析说明，实验所用所有蛇种间的Pearson相关系数均较高，仅存在细微差异；原因之一可能为颊窝结构特性在该亚科下各属间尚未出现该器官结构的明显分化。感受野分析说明，作为侧方感受器官，颊窝对于来自头部两侧的信息具有较大的感受范围，两侧颊窝感受野在头前方存在交叉区域，说明颊窝亦可接受来自头部正面的信息。30666
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毕业论文关键词：蝮亚科蛇类；颊窝；系统发育；感受野
Analysis on the Structure of the Facial Pit of Crotalinae Snakes And the Correlation With Its Phylogenetic Development
Abstract：Snakes in Viperidae Fu subfamily (Crotalinae) have unique infrared receptor - facial pit, which can recognize infrared signals produced by warm-blooded animals, to complete orientation and predation behavior. This subject mainly focused on the basic structure of facial pit, tried to connect the structure of facial pit with the taxonomy of Fu subfamily snakes, so as to explore the correlation of the structure of facial pit and the phylogenesis of main Genera in Fu subfamily. The experiment was carried out using the Micro-CT instrument to scan the snakes, and the 3D model was reconstructed via the system and the data were analyzed.The data analysis showed that the Pearson correlation coefficient of all the species used in the experiment was fairly high, with only slight differences; One of the possible reasons for this may be that the structural characteristics of facial pits have not yet started to appear the distinct differentiation within these Genera.Receptive field analysis showed that, as lateral receptors - facial pits possessed a large scope of senses for information from either side of the head. And for both sides of the facial pits, the receptive field overlapped in front of the head, which indicates that facial pits can also accept information right in front of the head.
Key words: Crotalinae Snakes; Facial pit; Phylogenesis; Receptive field
目 录
摘要 1
关键词 1
Abstract…… 1
Key words 1
引言 1
1 材料与方法 2
1．1 实验材料 2
1．2 实验器材 2
1．2．1 麻醉药剂与器材 2
1．2．2 CT扫描器材 2
1．3 操作及方法 2
1．3．1 扫描 2
1．3．2 模型重构 2
1．3．3 数据测量 2
1．3．4 系统发育树 3
1．4 数据分析 3
2 结果与分析 3
2．1 系统发育树 3
2．1．1 亚洲蝮属 3
2．1．2 竹叶青蛇属和绿蝮属 4
2．1．3 烙铁头蛇属 4
2．2 测量结果 4
2．2．1 颊窝角度数据 4
2．2．2 颊窝长度数据 4
2．3 长度数据相关性分析 5
2．3．1 亚洲蝮属内分析 5
2．3．2 竹叶青蛇属和绿蝮属内分析 5
2．3．3 烙铁头蛇属内分析 5