Experimental Transfer of Abnormal "Sex-Ratio" in the Lady-Bird Beetle, Harmonia axyridis (PALLAS)(Coleoptera : Coccinellidae)
スポンサーリンク
概要
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An abnormal "sex-ratio" (SR) strain of Harmonia axyridis (PALLAS) which produced only females was selected and maintained until the 10th generation. Transfer experiments to detect the SR condition were carried out by microinjection of the supernatant from a homogenate of SR pupae into normal pupae. The transfer of the SR agent(s) from the SR to the normal females was not observed when the latter mated on the 7th day after emergence, but it was observed in beetles which mated on the 30th day after emergence. The SR agent(s) were shown to be present in the supernatant and to increase their infectious potency during the incubation period.
- 1982-08-25
著者
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Gotoh Tetsuo
Laboratory Of Applied Entomology And Zoology Faculty Of Agriculture Ibaraki University
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Gotoh Tetsuo
Laboratory Of Entomology Faculty Of Agriculture Tamagawa University:(present Address) Institute Of A
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