水生生物学报2012，Vol.36Issue(6)：1171-1175,5.DOI:10.3724/SP.J.1035.2012.01171
洱海的浮游蓝藻布氏常丝藻及其分类学的讨论
OCCURRENCE OF PLANKTONIC CYANOBACTERIUM TYCHONEMA BOUURRELLYI IN ERHAI LAKE AND ITS TAXONOMIC STUDIES
摘要
Abstract
Tychonema was separated from Oscillatora and established as a new genus in 1988 by setting Tychonema tenue as the type species. This new genus was accepted and currently considered to include three species as T. tenue, T. bornetii and T. bourrellyi. T. bornetii was described from the Tibet Plateau, but no reports on type species and its related taxa of Tychonema were from China. The present study reported the occurrence of a Tychonema species from the Erhai Lake, and this species was morphologically identified as T. bouurrellyi based on its planktonic habit, trichome color and cellular content structure etc. Cultivated strains were also isolated, and comparative analyses on the sequences of 16S rDNA also confirmed that the T. bouurrellyi strain was tightly grouped with the strains of T. bouurrellyi/T tenue. This is the first report on occurrence of T. bouurrellyi from outside of Europe, and T bouurrellyi is also a newly recorded species in China. Such a result demonstrated that T. bouurrellyi can distribute extending from cold waters in North Europe to the warm waters in subtropical regions. It is interesting to coincide the occurrence of T bouurrellyi with slightly eu-trophicated waters since Lake Erhai has been regarded as an early phase of eutrophicated lake. The taxonomic problem and revision of the Tychonema genus was discussed in this study.关键词
蓝藻/常丝藻属/布氏常丝藻/分类/洱海Key words
Cyanobacteria/ Tychonema/ Tychonema bourrellyi/ Taxonomy/ Erhai Lake分类
农业科技引用本文复制引用
卫志宏,朱梦灵,虞功亮,李仁辉..洱海的浮游蓝藻布氏常丝藻及其分类学的讨论[J].水生生物学报,2012,36(6):1171-1175,5.基金项目
国家自然科学基金(30970185 （）
40876071) （）
中国科学院知识创新工程重要方向项目(KSCXZ-YW-Z-0932) （KSCXZ-YW-Z-0932）
国家水专项洱海课题(2008ZX07105-006)资助 （2008ZX07105-006）
