チビゴキブリ<i>Anaplectella ruficollis</i> (Karny, 1915) (Blattodea: Blattellidae)に特有な産卵行動と卵鞘の形態について

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  • A unique oviposition behavior and oothecal morphology in <i>Anaplectella ruficollis</i> (Karny, 1915) (Blattodea: Blattellidae)
  • A unique oviposition behavior and oothecal morphology in Anaplectella ruficollis (Karny, 1915) (Blattodea: Blattellidae)

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説明

The oviposition of eight individuals of Anaplectella ruficollis (Karny, 1915), one at a time, was observed in 170 ml clean cups set at room temperature (22–27ºC) and under fluorescent light. Anaplectella ruficollis produces pale brown ootheca which are rotated clockwise. 15–35 minutes, the ootheca has rotated 90º. The ootheca is then retracted into the abdomen for 58–72 minutes. After 2–11 days, the brown-colored ootheca is laid and covered with the substrate. The oviposition behavior of Anaplectella ruficollis observed in this study is unique once the ootheca is retracted into the abdomen. Although it is thought to be closely related to ovoviviparity, it is still appropriate to classify it as oviparous A. This was because the ootheca had a rigid oothecal membrane and serrated keel, and the females dropped the ootheca well before the hatch. Additionally, form of ootheca was asymmetrical from left to right and bordered by the suture line, which suggests an advantage to the traits for retraction into the abdomen.

収録刊行物

  • Edaphologia

    Edaphologia 112 (0), 25-29, 2023-01-05

    日本土壌動物学会

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