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)

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.