小川の流水面におけるアメンボ群とオオアメンボ群の行動域について

概要

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The observations on the water-striders were made on the water surface of a small river in which Aquarius elongatus (A. e.) and Aquarius paludum (A. p.), were found. It seems that the population of each species shows a tendency to occupy its domain on the water surface in which the water-striders are skating, and the domain of one species overlaps that of another. The domain of each population is transformed by the individual numbers of each population. When the individual numbers of A. e. population are fewer than those of A. p. population, the individuals of A. elongatus are around the domain formed by A. p. population. When the individual numbers of A. p. population are fewer than those of A. e. population, the individuals of A. paludum occupy a small area of the corner of the domain formed by A. e. population. The individual of A. elongatus is more powerful than that of A. paludum, but the domain of each water-strider population is determined by the population densities of each species. Therefore, the domains formed by the populations of two species on the surface of the water seem to be determined by territorial behaviour of them.
日本生態学会の論文
1959-12-01