Chasing and sneaking behavior of male Japanese bitterling

(6.1MB, 00:00:55)
Shot Date: 2003/05
Shot Location: Kumamoto City Museum

species
Rhodeus ocellatus kurumeus

Key Words
Japanese bitterling, Rhodeus ocellatus kurumeus
bivalve, Anodonta woodiana
egg deposition
sperm release
sneaking


Minoru Shimizu
2005/10/09 submitted


Animalia >Chordata >Osteichthyes >Cypriniformes >Cyprinidae >Rhodeus >
or
Animalia >Unidentified >Unidentified >Unidentified >Unidentified >Unidentified >

A female Japanese bitterling Rhodeus ocellatus kurumeus has just laid eggs in a bivalve Anodonta woodiana, and a male bitterling is releasing sperm. The male chases other males away to prevent their sneak spawning. In the first cut, the male successfully repelled the intruding male. In the second cut, the male¡Çs chases were not vigorous enough and the intruder successfully released sperm (40th second). See a separate video ¡ÆSpawning in a Japanese bitterling Rhodeus ocellatus kurumeus¡Ç for the detailed description of the spawning in the bitterling. The chasing male has reddish, nuptial coloration. (translated by Asoh)

(Data No.momo051008ro02b)

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