東京都心におけるケブカクロバエの周年経過

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The breeding and emerging periods of Aldrichina grahami (Aldrich) were studied along with the fluctuation of adults for tracing its life cycle by using both baited and emergence traps in the backyard of the National Institute of Health, Tokyo, from December 1981 to March 1983. Seasonal activity of the adult in each year was similar, which confirmed the previous works reported from the same locality. A number of both sexes were trapped from March to July, and a large amount of females were caught in September to December. The first flight in early fall represents only aged females attracted. The breeding stage first appeared in the beginning of September and ended in the middle of coming May. Early fall generation derived from eggs deposited in September quickly grew up and emerged as adults in late fall (October to November). Prepupae or pupae of late fall generation derived from eggs in November to December became dormant during winter. After the dormancy, most adults emerged in March, though a few appeared in the end of January and the beginning of February. Spring generation from eggs in February to May normally developed within relatively short periods (0.5-1.5 months). No developing stages were observed from late May to early September, although male and female adults were trapped until the end of July. From the above, it is concluded that this blow fly can develop in the Tokyo area during 8.5 months from September to the middle of May excepting the coldest season in which dormant prepupae and pupae are dominant. The first appearance of aged females in September may suggest the adult aestivation in Aldrichina grahami.
日本衛生動物学会の論文
1984-09-15

東京都心におけるケブカクロバエの周年経過

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