Contact Stimulation by Crowding for Induction of Molting in Parasitus gregarius Deutonymphs (Acarina : Parasitidae)
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概要
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Inhibition of duetonymph molting of Parasitus gregarius, a manure-inhabiting predacious mite, was observed by prohibiting contact with other individuals. The highest rate of adult emergence was obtained when two duetonymphs of different sex were reared together in the same container. Intense crowding of individuals of the same sex had less effect on the molting than the pairing of deutonymphs of different sex. The molting rate increased as the time of maintaining mites in crowds was prolonged. Contact with protonymphs or with dead mites induced molting in some deutonymphs, though at a lower rate than in the case of the live inter-deutonymphal combination. Other gamasine species or manure components has no effect on molting. It seemed probable that molting of the deutonymphs was induced most effectively by direct contact with other mature individuals of apposite sex of the same species.
- 1976-12-25
著者
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Ito Yasuhiro
National Food Research Institute
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Ito Yasuhiro
National Institute Of Agricultural Sciences
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