ヘリグロテントウノミハムシの生活史に関する研究 : V.産卵に及ぼす新芽と成熟葉の影響

概要

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Argopistes coccinelliformis is usually a univoltine species and the newly-emerged adults enter diapause under the field conditions in southern Kanto, central japan. Adults deposit eggs on new sprouts or leaves of host plants but not on mature leaves. Some newly-emerged adults, however, could oviposit when supplied with new leaves soon after eclosion. Adults prefer new leaves to mature ones regardless of the season. This evidence suggested that some of the beetles may be multivoltine. Oviposition was interrupted when mature leaves were supplied but was resumed when new leaves were supplied again. No eggs were found in the ovaries of adults during the periods of interrupted oviposition. The beetles seem to use the food condition as a cue to the suitability of the environment for oviposition.
1991-08-25