Back-crossed hybrids of Pieris melete and P. napi japonica (Lepidoptera, Pieridae)

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  • スジグロシロチョウとヤマトスジグロシロチョウの人工雑種の戻し交配
  • スジグロシロチョウ ト ヤマトスジグロシロチョウ ノ ジンコウ ザッシュ ノ モドシ コウハイ

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Abstract

The potential for genetic introgression between Pieris melete and P. napi japonica was evaluated through interspecific mating experiments of both parental species using the cage pairing method and three serial back crosses carried out by the cage and hand pairing methods. Back-crossed hybrids with various genetic probability derived from P. melete were obtained. There were few differences in reproductive ability between male adult back-crossed hybrids. Although female adult F1 and back-crossed hybrid could not reproduce, their genetic probability more closely reflected those of the parental species, and female adults of back-crossed hybrids also had higher reproductive ability. Interspecific cage pairings of the parental species did not produce successful matings, but crosses of the F1 hybrids and either parental species could be produced easily. Using the ratio of the maximum width of the scent sack to the maximum width of the scent scale in the wing of adult males, it was possible to evaluate natural hybrids found in the field.

Journal

  • Lepidoptera Science

    Lepidoptera Science 63 (4), 191-203, 2012

    THE LEPIDOPTEROLOGICAL SOCIETY OF JAPAN

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