Survey on flies of the genus Musca (Diptera, Muscidae) in the process of construction and development of human settlements in a tropical forest, Indonesia

摘要

Invasive phenomenon and incidence of the Musca species in the process of construction and development of human settlements in a tropical forest were observed with bait-traps in the dry season in Sulawesi and Seram, east Indonesia. Flies collected at7 stations in the Toili district of Central Sulawesi numbered 2,215 comprising 3 families, viz., Muscidae, Calliphoridae and Sarcophagidac. Of them, 47 individuals of 3 species, Musca domestica Linnaeus, M. ventrosa Wiedemann, and M. sorbens Wiedemann,were collected. No Musca species was caught in the uninhabited forest. M. domestica and M. ventrosa were caught in the deforestation area and at the boundary between the natural forest and a new village. M. sorbens, together with M. domestica and M. ventrosa, was caught in a new village, an old village and the Toili town. The proportion of the Musca species in total flies increased with the lapse of time after construction of human settlements. In Manusela village isolated by a tropical forest in Seram,M.sorbens occupied 98.3 percent of the Musca species collected, while M. domestica were very few.