Survival and growth of Luciola parvula larvae fed land snails, earthworms, or wood lice (Coleoptera: Lampyridae)

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  • NISHIJIMA Sho
    Laboratory of Insect Science, Graduate School of Agricultural Science, Kobe University
  • YASUOKA Takuro
    Laboratory of Insect Science, Graduate School of Agricultural Science, Kobe University
  • MAETO Kaoru
    Laboratory of Insect Science, Graduate School of Agricultural Science, Kobe University

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  • 陸貝類,ミミズ類あるいはワラジムシを給餌したヒメボタル幼虫の生存と成長
  • リク カイルイ ミミズルイ アルイワ ワラジムシ オ キュウジ シタ ヒメボタル ヨウチュウ ノ セイゾン ト セイチョウ

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Abstract

Larvae of Luciola parvula were fed minced land snails (Euphaedusa tau tau and Pupinella rufa), earthworms (Oligochaeta spp.), or wood lice (Porcellio scaber) for about 80 weeks after molting to the second instar. Under all these diet conditions, molting with the growth of body size (the increase of pronotum width) was observed. Kaplan-Meier survival curve analysis estimated that the probability of survival was 83.6, 75.2, or 46.6% for larvae fed E. tau tau, P. rufa, or Oligochaeta spp., respectively. About a half of the larvae fed P. scaber survived for 200 days or more, whereas all died by the end of the experiment. The pronotum width of the larvae fed Oligochaeta spp. was a little smaller than those fed land snails and the final instars collected in the field. Therefore, it is likely that L. parvula larvae can use various soil animals and their carcasses at least as temporary food resources, while land snails are most suitable.

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