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Aggressive encounters between males inChrysolina aurichalcea (Coleoptera: Chrysomelidae) (1986)

Shimizu, Nobuyuki ; Fujiyama, Shizuo

Springer

Journal of ethology 4 (1986), S. 11-15

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ISSN: 1439-5444

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract During the breeding season ofC. aurichalcea, an unpaired male is occasionally seen attacking a mating male on the host plant,Artemisia princeps. To clarify the significance of this behaviour, aggressive encounters between an unpaired male and a mating male were observed 269 times in experimental conditions. Intruders resulted in take-over (10.4%), loss (36.5%), draw (39.0%), or non-interference (14.1%). Frontal attack had 5 times higher probability of take-over than back one. A larger unpaired male had a slightly greater chance of take-over (P〈0.02). The importance of aggressive encounters was discussed in view of sperm competition and of cost and benefit.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02348248

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