伊豆岛三宅岛青鸟幼鸟捕食者的研究

Japanese journal of herpetology Pub Date : 1900-01-01 DOI:10.5358/HSJ1972.13.3_65

M. Hasegawa

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引用次数: 15

摘要

在三宅岛(Miyake-jima)，一个没有本土哺乳动物和蛇类捕食者的火山岛上，研究了鸟类捕食蜥蜴的情况。celaenops是一种中等大小的食虫鸟类，在岛上非常丰富，人们怀疑它的体型足够大，可以制服幼年蜥蜴。采食实验表明，celaenops是一种体型有限的捕食者，能够捕获口鼻长度小于48mm的okadae。

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The Thrush Trudus celaenops , as an Avian Predator of Juvenile Eumeces okadae on Miyake-Jima, Izu Islands

Avian predation upon the lizard Eumeces okadae was examined on Miyake-jima, a volcanic island free from native species of mammalian and ophidian predators. Trudus celaenops, a medium-sized insectivorus bird very abundant on the island, was suspected to be large enough to subdue juvenile lizards. Feeding experiments indicated that T. celaenops was a size-limited predator, capable of capturing E. okadae smaller than 48mm snout-vent length.

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Japanese journal of herpetology

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