晋西南重要医学蝇类早期发生规律的初步研究

Early-stage Occurance of Medical Important Flies in Southwest Shanxi Province.

对重要医学蝇类的早期发生及其年龄组成的研究有助于早期蝇类来源与虫口预测以及早期蝇的防治。关于蝇类的发生季节等报告较多,但对蝇类早期发生及其年龄组成的报告却较少。作者于1986年11月至1987年5月对运城市早期发生的重要医学蝇类及其年龄组成等生态学特性进行了初步调查研究,现报告如下。

Results are presented for a study on the early occurance and age composition of medical important flies in Yuncheng city cf Shanxi province during Nov. 1986 and May 1987. 21 species and 8445 flies (females 6601) were captured in the early spring. The female/male ratio was 3.6. The predominant species were Aldriohina grahami,Lucilia sericata and Muscina stabulans etc. 225 females were anatomized, of which, 84% were un-oviposited, 40% were pregnant. Follicular stages were mostly from Ⅱ to Ⅴ Detinovas stages. These adults were frequently active in fish markets and warmer places. The earliest adults appeared in early Feb. Their occurance was related to the changs of air temperature. Early larvae appeared in the middle of March, breeding in animal wastes. Suggestions were given for the control of flies in the early seasons.