在鱼 (Chondrichthyes, Elasmobranchii) 中的唇部软骨的形态变异性和功能
Claudia Klimpfinger1, Jürgen Kriwet1
1Department of Paleontology, University of Vienna, 1090 Vienna, Austria.
Biology
|December 22, 2023
概括
鱼的嘴唇软骨 (LCs) 在数量和形状上有所不同,这表明了食策略. 发达的LC与吸食相关,而缺席或小的LC则暗示雄羊食或咬人的行为.
科学领域:
- * 比较解剖学研究
- * 功能形态学 * 功能形态学
- * 考古学 古生物学
背景情况:
- * 嘴唇软骨 (LCs) 是在elasmobranchs的嘴唇中发现的解剖结构,与下巴和牙侧面.
- * 假设这些软骨在吸食养机制中起作用.
- * LC在鱼物种的数量,大小,形状和位置上表现出显著的多样性,反映出不同的养生态.
研究的目的:
- * 为了研究嘴唇软骨形态和鱼的食策略之间的关系.
- *根据LC特征建立推断食和狩猎行为的参数.
- * 开发LC的分类系统,以帮助研究现存和灭绝的鱼.
主要方法:
- *对100多种现存鱼物种的CT扫描进行分析,代表所有Euselachii家族 (不包括 batoids).
- * 在各种鱼种群中对口唇软骨进行比较形态分析.
- * LC形态类型与观察到或推断到的养行为和热量水平的相关性.
主要成果:
- * 没有LC或只有小残余的鱼主要是羊食者或咬食者,占据更高的食量水平.
- *吸食鱼通常拥有众多 (多达五对) 和发达的LC,占据较低的食物营养水平.
- * 专业的食者,如切饼干鱼,表现出独特的LC形状,而通用主义者则具有更简单的LC安排.
结论:
- * 已经开发了一个二分法关键来分类LC形态型.
- * 特定的LC形态组合与吸食的不同强度有关,影响狩猎策略.
- * 这项研究为推断人们对鲜为人知的现存和灭绝的鱼物种的食策略提供了一个框架.
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