Spawning migrations in the monogamous butterflyfish,Chaetodon trifasciatus |
| |
Authors: | Shinji Yabuta |
| |
Institution: | (1) Department of Zoology, Faculty of Science, Kyoto University, Sakyo-ku, 606-01 Kyoto, Japan |
| |
Abstract: | Spawning and related behavior of a monogamous butterflyfish,Chaetodon trifasciatus, were observed at Kuroshima Island, Okinawa, Japan. Each heterosexual pair defended a feeding territory in the daytime. Spawning
occurred at dusk on the days around full or new moon in the daytime. Spawning occurred at dusk on the days around full or
new moon in the vicinity of offshore tidal currents. Spawning migration to such sites occurred in pairs, the feeding territories
of which were located in areas of inshore currents. In the evening each pair established a small temporary territory, which
they spawned adjacent to and slept within until the next morning. The distribution of sleeping sites as well as tidal current
directions may determine the spawning sites of this butterflyfish. |
| |
Keywords: | Coral reef fish Chaetodontidae semi-lunar spawning mating system territoriality |
本文献已被 SpringerLink 等数据库收录! |
|