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Responses of immature male masu salmon parr to the urine of mature males |
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| Authors: | Hidenobu Yambe Miho Yamada Fumio Yamazaki |
| Institution: | (1) Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-cho, Hakodate, Hokkaido 041-8611, Japan;(2) Present address: Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Sesoko, Motobu, Okinawa 905-0227, Japan |
| Abstract: | Responses of male masu salmon Oncorhynchus masou parr to mature male urine were investigated in a Y-maze trough. Immature masu salmon made fewer entries into the channel conditioned by mature male urine than that with control water. This phenomenon may suggest that immature males avoid sexually active males in the spawning season. |
| Keywords: | Behavior Immature male parr Mature male urine Masu salmon Pheromone |
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