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首页> 外文期刊>Biology Bulletin >Functional Morphology and Adaptive Significance of the Jaw Apparatus of the Parakeet Auklet (Aethia psittacula, Alcidae)
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Functional Morphology and Adaptive Significance of the Jaw Apparatus of the Parakeet Auklet (Aethia psittacula, Alcidae)

机译：长尾鹦鹉Auklet的颚式装置的功能形貌和自适应意义（艾司比亚Psittacula，Alcidae）

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摘要

The jaw apparatus of the parakeet auklet (Aethia psittacula) has been investigated in comparison to that of the crested auklet (Aethia cristatella). The mechanical and biological effects of the distinctive bill structure in the parakeet auklet have been analyzed. The oral slit is concave; therefore, equilibrium is achieved without the need for disabling the posterior or anterior parts of the dorsal adductor of the lower jaw and the adductor can act with the maximal force regardless of the position of the object clamped in the bill. Shearing of large food objects, such as polychaetes and jellyfish, by the parakeet auklet bill is a jaw apparatus specialization unique among birds. Strengthening of the jaw apparatus, which was initially adapted for capturing small planktonic crustaceans, involved the development of additional aponeuroses in the internal adductor, consolidation of the latter, shortening of the bill, and changes of the shape of the oral slit opening.
机译：与冠状Auklet（含紫藤状睾丸）相比，已经研究了延叶Auklet（紫杉状Psittacula）的钳口装置。分析了延期鹦鹉Auklet中独特纸币结构的机械和生物学效应。口腔狭缝是凹形的;因此，在不需要禁用下钳口的背部收集器的后部或前部的需要实现平衡，并且由于在钞票中夹紧的物体的位置，收化器可以用最大力作用。大鹦鹉Auklet Bill的大型食物物品（如Polychaetes和Jellyfish）的剪切是鸟类中独特的颚袋专业化。强化最初适于捕获小浮游甲壳类动物的钳口装置，涉及在内部收集器中的额外腱膜，后者的整合，票据的缩短以及口腔狭缝的形状的变化，以及口腔狭缝开口的变化的开发。

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