オオミドリシジミFavonius orientalis(Murray)の産卵選好性と幼虫の発育との関係

概要

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To identify the major factors causing oviposition preference of the lycaenid butterfly Favonius orientalis (Murray), the relationship between oviposition preference and larval performance were investigated. Concerning oviposition preference, two hundred canopy twigs and two hundred non-canopy twigs were examined in coppice forest habitat of Quercus serrata Thunb. at Moka City in Tochigi Prefecture. Eggs were found on non-canopy twigs, but not on canopy twigs. The leaves from the canopy twigs were tough and the density of trichomes on these leaves was high, compared with the non-canopy twigs, and the canopy leaves unfolded more quickly than non-canopy ones. However, when larvae were reared on leaves from each type of twigs, there were no significant differences in larval performance between the diets. Differences in physical characteristics such as toughness of leaves, density of trichomes and growing rate of the leaves between canopy twigs and non-canopy twigs had no effect on the larval performance of this species. Because the female adults of this species laid eggs on non-canopy twigs regardless of the plant phenology, and physical characteristics of the leaves, there must be unknown factors, besides quality of the host plant, that affect oviposition preference under normal field conditions.
日本鱗翅学会の論文
2003-03-30