The Life Cycle of Blattella nipponica ASAHINA in Kyoto :

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The life cycle of Blattella nipponica was studied in the field as well as under indoor conditions in Kyoto. Adults emerged early in June and seemed to begin to deposit their first oothecae late in July, the second early in September, and no or few further oothecae in the field. Nymphs hatched upon the deposition of oothecae. The new nymphs did not become adults before the end of the year in the field. Most of them seemed to overwinter at their penultimate (6th) instar stage. The greatest number of fertile oothecae deposited per adult female was 5 and that of nymphs hatching per ootheca was 43 under the room conditions. Second-generation adults emerged, copulated, and deposited oothecae under the room conditions, but they hardly produced fertile oothecae. The results suggest that B. nipponica normally has 1 generation a year, entering diapause at the penultimate nymphal instar stage in the field.

Journal

  • 昆蟲

    昆蟲 53 (1), 42-48, 1985-03-25

    東京昆蟲學會

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