Effect of Interspecific Mating on Female Fitness in Two Closely Related Ladybirds (Henosepilachna)

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概要

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• Double-mating experiments involving conspecific and interspecific combinations were carried out with two closely related phytophagous ladybirds, Henosepilachna vigintioctomaculata and H. pustulosa in order to examine the effect of interspecific mating on the female fitness. In both species, the high level of percentage hatching of eggs after the first conspecific mating did not significantly change after the second interspecific mating, while the percentage hatching was very low after the first interspecific mating but rose to the normal level soon after the second conspecific mating. This suggests that the decrease of the female fitness by the interspecific mating is negligible in mixed populations, if females mate at least once with conspecific males before oviposition. In such circumstances, ethological isolation between the two species would not evolve.

• 日本昆虫学会の論文
• 1985-03-25

著者

• Nakano Susumu

  Zoological Institute Faculty Of Science Hokkaido University

関連論文

• Effect of Interspecific Mating on Female Fitness in Two Closely Related Ladybirds (Henosepilachna)
• Preliminary Experiments on the Crossing between Two Puzzling Phytophagous Ladybirds, Henosepilachna vigintioctomaculata and H. pustulosa (Coleoptera : Coccinellidae)
• Sperm Displacement in Henosepilachna pustulosa (Coleoptera, Coccinellidae)
• Supplementary Notes on the Crossing between Two Closely Related Phytophagous Ladybirds, Henosepilachna vigintioctomaculata and H. pustulosa (Coleoptera, Coccinellidae)

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