Functional morphology involved in intraspecific fighting of the beaked whale, Mesoplodon carlhubbsi
Functional morphology involved in intraspecific fighting of the beaked whale, Mesoplodon carlhubbsi
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喙鲸 Mesoplodon carlhubbsi 种内战斗的功能形态
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
J. Heyning
中科院分区：
文献类型：
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作者：
J. Heyning
许多作者将雄性喙鲸身上的线性疤痕归因于种内争斗。从结构的角度对 Mesoplodon carlhubbsi 物种进行了检查，以从功能上描述这种疤痕是如何产生的。在这个物种中，线性疤痕有两种模式：单一疤痕和平行疤痕。当攻击者雄性拥有的两颗大牙齿同时与受害鲸鱼接触时，就会出现平行的疤痕。在成熟的雄性中，牙齿从口腔外的下颌沿喙嘴两侧突出，高度高于喙嘴顶部。这表明牙齿是在闭嘴的情况下使用的，通过使喙的背面与即将受到伤害的鲸鱼接触。成熟雄性中明显的密集骨化的中膜管可能在雄性参与战斗时起到加固讲台的作用。假设中齿龙牙列有两种进化趋势：（i）牙齿在牙齿中位置的变化...
Numerous authors have attributed the linear scars on male beaked whales to intraspecific fighting. The species Mesoplodon carlhubbsi was examined from a structural viewpoint to describe functionally how such scarring may result. In this species, linear scars occur in two patterns: single scars and parallel scars. Parallel scars occur when both of the large teeth possessed by the aggressor male come in contact simultaneously with the inflicted whale. In mature males, the teeth project from the lower jaw outside the mouth up along both sides of the rostrum to a height greater than the top of the rostrum. This indicates that the teeth are used with the mouth closed by bringing the dorsal aspect of the rostrum in contact with the soon to be inflicted whale. The densely ossified mesorostral canal evident in mature males probably functions in reinforcing the rostrum as the males engage in fighting. Two evolutionary trends in Mesoplodon dentition are hypothesized: (i) the change in position of the teeth in the m...