Spawning behavior and reproductive isolation of two species ofPseudolabrus |
| |
Authors: | Kazunori Matsumoto Kohji Mabuchi Masanori Kohda Tetsuji Nakabo |
| |
Affiliation: | (1) Laboratory of Animal Sociology, Department of Biology, Faculty of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, 558 Osaka, Japan;(2) Department of Fisheries, Faculty of Agriculture, Kyoto University, 606-01 Kyoto, Japan |
| |
Abstract: | The reproductive behavior of two wrasses,Pseudolabrus eoethinus (Richardson, 1846) andP. sieboldi Mabuchi & Nakabo, 1997, was studied on a rocky coast in Shikoku, Japan, where the two species occur sympatrically. In the study area, individual males of each species established mating territories within which pair spawnings occurred. Pair spawnings were observed only between conspecifics, indicating that the two coexisting species were reproductively isolated. Both species usually spawned during the afternoon in early winter and had similar reproductive behavior. Although habitat, temporal and behavioral isolation mechanisms were not apparent, reproductive isolation seemed to occur via premating isolation through visual recognition of conspecific mates because the two species differed in body size and coloration. On one occasion a maleP. sieboldi was observed to perform streaking behavior to join a spawning pair ofP. eoethinus. Thus, postmating isolation between the two species is also discussed. |
| |
Keywords: | Pseudolabrus reproductive behavior reproductive isolation premating isolation |
本文献已被 SpringerLink 等数据库收录! |
|