Off-host oviposition by two fritillary species (Nymphalidae, Argynninae) and its relation to egg predation

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  • ヒョウモンチョウ2種(タテハチョウ科,ヒョウモンチョウ亜科)による食草外産卵と卵被食との関係

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Abstract

Off-host oviposition of Argyreus hyperbius and Argynnis paphia was investigated. We obtained data on oviposition sites in the caged condition and on predation ratios of eggs exposed to a natural habitat. A. hyperbius oviposited both on and off the host plant with a significantly higher density on it. They laid more eggs on forbs than on dead leaves or stones with a tendency for the number to increase nearer the host plant. A. paphia oviposited at higher levels of the net cage far from the short host plant. As the predation ratio of A. paphia eggs was higher at lower levels, it was hypothesized that this species evolved a habit to oviposit at higher levels to avoid ground predators. For the occasional off-host oviposition by A. hyperbius, possibilities of predation and transition of oviposition habit are discussed.

Journal

  • Lepidoptera Science

    Lepidoptera Science 60 (4), 268-276, 2010

    THE LEPIDOPTEROLOGICAL SOCIETY OF JAPAN

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