Abstract
The aquatic oligochaetes in mainstream of the Changjiang River have not been studied previously. Since 1983, benthic samples have been collected mainly from mid-upper reach of the river. Altogether 19 species belonging to 4 families of the Oligochaeta were found. Among them, Nais inflata is the commonest species throughout the river, whereas Nais sp., Arcteonais lomondi, Limnodrilus silvani, Rhyacodrilus riabuschinskii and Telmatodrilus sp. ae recorded from China for the first time.
Quantitatively, the aquatic oligochaetes constitute the majority of zoobenthos in the mainstream. In 1984, the standing crop of the Tubificidae was 231–343 ind·m-2 in density and 0.73–0.97 g·m-2 (wet weight) in biomass, and that of the Naididae was 21–4982 ind·m-2 and 0.003–1.75 g·m-2 (wet weight) respectively.
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Yanling, L. Preliminary study of the aquatic Oligochaeta of the Changjiang (Yangtze) River. Hydrobiologia 155, 195–198 (1987). https://doi.org/10.1007/BF00025651
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DOI: https://doi.org/10.1007/BF00025651