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1 July 2008 Dietary Habits of the Introduced Cane Toad Bufo marinus (Amphibia: Bufonidae) on Ishigakijima, Southern Ryukyus, Japan
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Abstract

We examined dietary habits of the introduced cane toad Bufo marinus at three sites representing different types of habitats (pond, forest, and rice paddy) on Ishigakijima Island, southern Ryukyus, Japan. Stomach contents analysis revealed that the toad mostly utilizes terrestrial arthropods, of which hymenopterans (mostly ants), adult coleopterans, hemipterans, and araneans dominated in the frequency of occurrence, hymenopterans in the numerical proportion, and larval lepidopterans, adult coleopterans, and larval dipterans in the volumetric proportion. Comparisons in taxonomic composition of the toad's stomach contents and pitfall and sweeping net samples suggested ignorance or avoidance of Amphipoda by the toad. Our results suggest the possibility of considerable predation pressure of B. marinus upon the native arthropods, and ants in particular, on Ishigakijima Island.

Noriko Kidera, Nontivich Tandavanitj, Daehyun Oh, Nozomi Nakanishi, Aya Satoh, Tetsuo Denda, Masako Izawa, and Hidetoshi Ota "Dietary Habits of the Introduced Cane Toad Bufo marinus (Amphibia: Bufonidae) on Ishigakijima, Southern Ryukyus, Japan," Pacific Science 62(3), 423-430, (1 July 2008). https://doi.org/10.2984/1534-6188(2008)62[423:DHOTIC]2.0.CO;2
Accepted: 1 August 2007; Published: 1 July 2008
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