著者

橋本 健一 八谷 和彦

出版者

日本鱗翅学会

雑誌

蝶と蛾 (ISSN:00240974)

巻号頁・発行日

vol.57, no.3, pp.229-236, 2006

参考文献数

23

被引用文献数

1

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The photoperiodic induction of diapause in a newly established population of Pieris brassicae (L.) in Hokkaido, Japan was investigated. The critical photoperiod for pupal diapause was about 13hr50min at 20℃. In the fields of Sapporo City in Hokkaido, diapausing pupae were obtained late in September. The present results obtained in the laboratory correlated well with the photoperiodic conditions of the diapause incidence observed in the field late in September. A well synchronized emergence from diapausing pupae was induced by chilling at 5℃ or 10℃ for 160 days. The conditions were comparable to the period of cold season in the habitat of this population.