Anti-egg predator behaviors of the small angelfish Centropyge ferrugatus (Pomacanthidae)
Identifieur interne : 000704 ( Main/Exploration ); précédent : 000703; suivant : 000705Anti-egg predator behaviors of the small angelfish Centropyge ferrugatus (Pomacanthidae)
Auteurs : Yoichi Sakai [Japon] ; Masanori Kohda [Japon]Source :
- Environmental Biology of Fishes [ 0378-1909 ] ; 1995-08-01.
Abstract
Synopsis: Predation on eggs of the angelfish, Centropyge ferrugatus, was observed in the coral reefs of Sesoko Island, Okinawa, Japan. This angelfish released pelagic eggs in pairs at sunset after slow ascents. Of 99 matings of this angelfish, an omnivorous damselfish Amblyglyphidodon curacao approached in 25, and fed on the released eggs in eight cases. The spawning angelfish never attacked the egg-predators. Pairs of this angelfish avoided the egg-predators by delaying mating for several minutes during courtships, and by frequent changes of spawning sites. Of the 25 matings targeted by the egg-predators, the angelfish successfully avoided predation in 17 cases. Eight matings were failures mainly due to lack of any attempt to elude the predator, suggesting that the delayed matings on multiple spawning sites are effective anti-egg predator behaviors.
Url:
DOI: 10.1007/BF00001176
Affiliations:
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