著者

田中 晋 志垣 修介

出版者

The Japanese Society of Limnology

雑誌

陸水学雑誌 (ISSN:00215104)

巻号頁・発行日

vol.48, no.2, pp.111-115, 1987-04-30 (Released:2009-11-13)

参考文献数

12

被引用文献数

2 3

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The Japanese form of Daphnia obtusa Kurz, 1874 emend. Scourfield, 1942 is described. This taxon was recorded as a variety of D. pulex (De Geer) in Japan by UÉNO (1927), but has not been definitely described in the Japanese literature since SCOURFIELD's revision (1942). In Toyama Prefecture, D. obtusa occurs only in Yadoya-ike Pond, a small-shallow and turbid pond, from early March to early May.