Entering and Exiting Routes of Hynobius leechii to a Breeding Site and Staying Time within Site

초록

To study entering and exiting routes of male and female Hynobius leechii to a breeding site andstaying time of them within the breeding site, we monitored a breeding population located in the research forests of Kangwon National University. The breeding site was surrounded by a drift fence associated with nine pitfall males arrived earlier at the breeding pond than females did. The operational sex ratio (OSR), defined as the ratio of males to females which are ready to mate, over a breeding season was female-biased as 0.67 male vs 1 female (57 males vs 87 females), but daily OSRs, OSR in a particular day, within the breeding pond were male-biased with 1.36~7.5 male vs 1 female in six days out of seven investigated days. While breeding males stayed in the breeding pond for about 11 days, breeding females left the pond as soon as they completed oviposition. However, the females stayed at terrestrial areas near the pond for about seven days before completely leaving the breeding site. Entering and exiting routes to the breeding site were different between males and females, and betwen ovulated and oviposited females. Both males and females athe site. Males stayed longer within the breeding site lost more body weight.

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