食糞性甲虫カドマルエンマコガネによる放牧牛糞からのノイエバエ発生抑圧

抄録

Semi-field tests were carried out to asses the suppressible effect of the native dung beetle, Onthophacus lenzii on the emergence of dung-breeding fly, Musca hervei in both the summer and autumn, 1983. Various sized groups (5, 10, 20 and 40 p airs) of beetles were released to cow dung pats (200 g) with 50 eggs of the fly, respectively.
In general, the higher the releasing density of beetles were, the lesser disappearance rates of the pat and the more decrease in head with of flies were o bserved. Especially the latter trend was more noticeable in the autumn. The number of emerged flies per pat was not influenced by the densities of beetles, and was around 30-40. However, no flies emerged at the highest density of beetles where the pat was almost all buried.