The functions and mechanisms of the protrusible upper jaws of two species of cyprinid fish
The functions and mechanisms of the protrusible upper jaws of two species of cyprinid fish
复制标题
两种鲤鱼上颌突出的功能及机制
DOI：
10.1111/j.1469-7998.1966.tb04050.x
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发表时间：
2009
影响因子：
2
通讯作者：
R. Alexander
中科院分区：
文献类型：
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作者：
R. Alexander
拍摄了Idus和Gobio进食的照片。Idus是一种原始的鲤科动物，当它张开嘴进食时，它的前颌部很少突出，但通过进一步突出前颌部来关闭嘴。这使它能够在保持口腔完全扩张的同时闭上嘴巴。Gobio是一种更高级的鲤科鱼，当它张开嘴巴的时候，它的前颌突得很突出，因此它能够把嘴紧贴在食物的表面上。描述了这些运动的机制。
Photographs have been taken of Idus and Gobio feeding. Idus, a primitive cyprinid, protrudes its premaxillae very little when it opens its mouth to take in food, but closes the mouth by further protrusion of the premaxillae. This enables it to close its mouth while keeping its buccal cavity fully expanded. Gobio, a more advanced cyprinid, protrudes its premaxillae strongly as it opens its mouth and is thereby able to apply the mouth closely to a surface from which it is taking food. The mechanisms of the movements are described.