Female-female fighting behavior of the Japanese horned beetle(2.8MB, 00:00:23)Shot Date: 2006/10/01 Shot Location: Laboratory of Biology, Okaya City, Nagano prefecture, Japan | ||
| species Trypoxylus dichotomus septentrionalis Key Words | ||
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Animalia >Arthropoda >Insecta >Coleoptera >Scarabaeidae >Trypoxylus >
Two females of the Japanese horned beetle are fighting with each other by head-butting for access to an artificial sap site in the laboratory. Such female head-butting has been already described by several studies ((Siva-Jothy, 1987; Iguchi, 1996; Hongo, 2003), but no motion pictures are available. Females of this beetle have no horns. However, their intrasexual fights are fairly intense, so that head-butting produces a clicking sound. Female head-butting behavior is similar to male head-butting behavior. However, studies on female fighting behavior in this species are still rare.
References
Hongo Y, 2003. Appraising behaviour during male–male interaction in the Japanese horned beetle Trypoxylus dichotomus septentrionalis (Kono). Behaviour 140: 501–517.
Iguchi Y, 1996. Sexual behavior of the horned beetle, Allomyrina dichotoma septentrionalis (Coleoptera, Scarabaeidae). Jpn J Entomol 64: 870–875.
Siva-Jothy MT, 1987. Mate securing tactics and the cost of fighting in the Japanese horned beetle, Allomyrina dichotoma L. (Scarabaeidae). J Ethol 5:165–172.
(Data No.momo071108td01b)
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