著者

河西 正興 渡辺 隆夫

出版者

The Ecological Society of Japan

雑誌

日本生態学会誌 (ISSN:00215007)

巻号頁・発行日

vol.27, no.4, pp.279-283, 1977-12-30 (Released:2017-04-11)

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The two sibling Drosophila species, D. simulans and D. melanogaster, are believed to coexist in nature sharing food and space. However, D. simulans prefers a semi-natural environment while D. melanogaster lives near human habitation. A weak seasonal isolation was observed between the two species, i.e., a unimodal population distribution peaking in August was found for D. melanogaster while a bimodal population distribution peaking in July and September was found for D. simulans.