Ant Specialization in Diet of the Narrow-mouthed Toad, Microhyla ornata, from Amamioshima Island of the Ryukyu Archipelago.
Ant Specialization in Diet of the Narrow-mouthed Toad, Microhyla ornata, from Amamioshima Island of the Ryukyu Archipelago.
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蚂蚁专门以来自琉球群岛奄美大岛的窄口蟾蜍（Microhyla ornata）为食。
DOI：
10.5358/hsj.19.27
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发表时间：
2000
影响因子：
0.7
通讯作者：
M. Matsui
中科院分区：
文献类型：
--
作者：
T. Hirai;M. Matsui
饰纹姬蛙以蚂蚁为食，占食物数量的77.1%和体积的44.6%。蟾蜍比周围环境中的蚂蚁比例更高，因此，可以被视为一种蚂蚁专门捕食者。蚂蚁是春季和夏季最常被捕食的猎物，而甲虫和木虱在夏季被捕食的频率较低。雌性比雄性有更大的身体和更宽的嘴，并且在最大尺寸上比雄性消耗更大的猎物。然而，平均猎物的大小，并为所有猎物类群的发生频率没有显着差异的性别。这些结果表明，性别不不同，尽管他们的形态差异，在他们的食物资源的使用。
Microhyla ornata consumed numerous ants, representing 77.1% in number and 44.6% in volume of the diet. The toad took ants in higher proportion than were present in the surrounding environment, and therefore, could be viewed as an ant specialized predator. Ants were the most numerously consumed prey in both spring and summer, while beetles and woodlice were less frequently taken in summer. Females have a larger body and wider mouth than males, and consumed significantly larger prey in maximum size than did males. However, mean prey size, and frequencies of occurrence for all prey taxa did not differ significantly between the sexes. These results suggest that the sexes do not differ in their use of food resources despite their morphological differences.