Aquatic Oligochaeta in the Ozegahara Mire, Central Japan
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概要
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Seventeen taxa of aquatic Oligochaeta belonging to four families were recorded from the Ozegahara Mire, central Honshu, Japan, on the basis of specimens collected from 1994 to 1996. Pristinella rosea (Piguet, 1906) is illustrated and recognized as distinct from P. jenkinae (Stephenson, 1931). The oligochaete fauna in bog pools was poorer than that in streams in the Mire, mainly composed of naidids and enchytraeids. On the other hand, a tubificid, Bothrioneurum vejdovskyanum Stole, 1886, which is fully described and illustrated herein, was exclusively common in the bog pools, being abundant at their shallow margins and in temporary waters in the Mire. This species is suggested to be amphibious and to reproduce mainly asexually. The impoverished oligochaete fauna in the bog pools may be due to such factors as instability of water level, low pH, deficiency of available food, and oxygen depletion of the water during the long winters.
- 日本動物分類学会の論文
- 2000-02-29
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