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Inability of mate and species recognition by male Asian toads, bufo gargarizans

Animal Cells and Systems 2008년 12권 2호 p.93 ~ 96
정석완, 성하철, 박시령,
소속 상세정보
정석완 ( Cheong Seok-Wan ) - Korea National University of Education Department of Biology Education
성하철 ( Sung Ha-Cheol ) - Korea National University of Education Department of Biology Education
박시령 ( Park Shi-Ryong ) - Korea National University of Education Department of Biology Education

Abstract


In recent years, we frequently observed miss?matched pairs between male Asian toads, Bufo gargarizans, and bullfrogs, Rana catesbeiana, at the toad breeding ponds, where scramble competition for mating occurred among the male toads. Thus, we performed two?choice experiments to investigate recognition ability of mates and species in male toads. The test males did not discriminate sexes, but the clasped stimulus males immediately produced release calls and stopped it while the clasped stimulus female did not. In addition, the test male toads did not discriminate reproductive state of females and even species. However, male toads chose larger individuals. The present results indicate that the main reason of miss?matched amplexus by the male toads is due to 1) the lack of recognition cues of conspecifics, 2) the lack of communication tools like release calls, and 3) the larger size of bullfrogs than male toads themselves.

키워드

Asian Toad; Bufo gargarizans; two-choice experiment; bullfrog; Rana catesbeiana; recognition cue; release call

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