Seasonal Changes in Nest and Colony Densities of the Formicine Ant, Paratrechina flavipes (Hymenoptera, Formicidae), in Tomakomai, Southern Hokkaido
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概要
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Both nest and colony densities of a monogynous but facultatively polydomous ant, Paratrechina flavipes (SMITH), seasonally changed at two habitats, a broad leaved forest (F1) and a grassland (G1). The density of queenright nests is naturally equal to that of queenright colonies and was usually constant, about one nest/m^2 during two years at the both sites. However, queenless nest density increased markedly in mid summer and also slightly in mid autumn, except for G1 in 1983 when the density level was much lower. The difference between densities of queenright and queenless nests can be explained by the budding system known in some other ant species. The pattern of seasonal change in queenless colony density was approximately similar to that in queenless nest density despite partial adoption of polydomy by this species. A probable case of nest fusion in autumn is described.
- 日本昆虫学会の論文
- 1987-12-25