Disgusting or delicious? Predatory behavior of the hylid frog Phyllodytes luteolus on sympatric ants

IF 0.5 4区生物学 Q4 ZOOLOGY

Iheringia Serie Zoologia Pub Date : 2017-10-09 DOI:10.1590/1678-4766E2017030

M. Solé, D. Loebmann

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引用次数: 3

Abstract

The phytotelm-dwelling frogs from the genus Phyllodytes Wagler, 1830 have been characterized as specialist frogs regarding their diet strategy which is mainly composed by colonial insects. Herein, we used two species of ants ( Camponotus sp. and Gnamtogenys sp.) with distinct defensive mechanisms to test the predatory behavior of Phyllodytes luteolus . The experiment was conducted with frogs inhabiting a patch of 20 bromeliads ( Aechmea cf. blanchetiana ). Ants were offered randomly to the frogs until we obtained 10 observations of predation of each ant species. We observed and recorded the time that P. luteolus needed to keep each ant species inside its mouth before it could ingest it. Predatory behavior was highly distinct. While Camponotus were caught and swallowed within six seconds and without apparent discomfort, individuals of P. luteolus had more difficulty in swallowing Gnamtogenys individuals, the time of manipulation ranging from 57 to 177 seconds. The mean values of time of predation observed in each treatment was highly significant (p<0.001). We conclude that differences found in the time of manipulation are highly correlated with defense mechanisms of each species of ants.

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恶心还是美味?毛叶蛙对同域蚂蚁的捕食行为

植物栖蛙属(Phyllodytes Wagler, 1830)的食性策略主要由群落昆虫组成，被认为是一种特殊的蛙类。本文以两种具有不同防御机制的蚂蚁(Camponotus sp.和Gnamtogenys sp.)为研究对象，研究了毛叶叶蚁的捕食行为。实验以栖息在20个凤梨属(Aechmea cf. blanchetiana)斑块中的青蛙为研究对象。随机提供蚂蚁给青蛙，直到我们获得10个观察到每种蚂蚁的捕食。我们观察并记录了P. luteolus在吞下每一种蚂蚁之前将其保持在嘴里所需的时间。掠食行为非常明显。在6秒内捕获并吞下金毛鼠，没有明显的不适，而黄毛鼠个体在吞下金毛鼠个体时更困难，操作时间从57秒到177秒不等。各处理的平均捕食时间均极显著(p<0.001)。我们得出结论，操作时间的差异与每种蚂蚁的防御机制高度相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iheringia Serie Zoologia 生物-动物学

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Iheringia, Série Zoologia, edited by the “Museu de Ciências Naturais” of the “Fundação Zoobotânica do Rio Grande do Sul”, publishes original research findings in zoology with emphasis on taxonomy, systematics, morphology, natural history, and community or population ecology of species from current Neotropical fauna. Scientific notes will not be accepted for publication. Species lists without a taxonomic approach, or that are not the result of studies on the ecology or natural history of communities will not normally be accepted. The same applies to identification keys of groups of taxa defined by political boundaries. Authors wishing to inquire about the scope of the journal or the suitability of a particular topic are encouraged to contact the Editorial Board prior to submission. Furthermore, articles with a main focus on agronomy, veterinary, zootechny or other areas involving applied zoology will not be accepted. Its abbreviated title is Iheringia, Sér. Zool., which should be used in bibliographies, footnotes and bibliographical references and strips.