Oviposition site preference of the near-threatened butterfly, Luehdorfia puziloi (Lepidoptera: Papilionidae) on Mt. Aoba, Miyagi Prefecture, Japan

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  • ヒメギフチョウ青葉山個体群の産卵適地選好要因
  • ヒメギフチョウ アオバヤマ コタイグン ノ サンラン テキチ センコウ ヨウイン

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The near-threatened butterfly, Luehdorfia puziloi (Lepidoptera: Papilionidae) is a nearly monophagous univoltine species that feeds on Asiasarum sieboldii and A. heterotropoides (Aristolochiaceae) with its adult flight period from April to May in Japan. To clarify the suitable habitats of the butterfly population on Mt. Aoba, Miyagi Prefecture, we analyzed the ovipositional environment using Quantification Theory Type I, a method for quantifying qualitative data. The investigation area was about 60ha between 80 and 160m above sea level and covered the whole of habitat of L. puziloi on Mt. Aoba. The area was divided into 54 small sections and was surveyed for its environmental characteristics such as type of trees, condition of undergrowth, geography, aspect of slope, and amount of food plants (A. sieboldii). Environmental factors suitable for oviposition were analyzed using the density of eggs in each section as the external criterion. The results showed the order of importance of environmental factors to be: amount of food plants > tree type >geography > condition of undergrowth > aspect of slope. A habitat where food plants were common, with deciduous trees, with undergrowth less than 30cm in height and on a slope facing north was the most preferable oviposition site for the butterfly.

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