Two new species of Sellaphora(Bacillariophyta) from a deep oligotrophic plateau lake,Lake Fuxian in subtropical China  

作　　者：李艳玲 METZELTIN Ditmar 龚志军 

机构地区：[1]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences [2]Am Stegskreuz 3b,D-65719 Hofheim,Germany

出　　处：《Chinese Journal of Oceanology and Limnology》2010年第6期1160-1165,共6页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Basic Research Program (973 Program) (No.2010CB833404);the Knowledge Innovation Program of the Chinese Academy of Sciences (Nos. KZCX2-YW-319 and KZCX1-YW-14);the National Natural Science Foundation of China (No. 40972114)

摘　　要：We describe two new species of Sellaphora from Lake Fuxian, Ytmnan Plateau, China. Based on both light and scanning electron microscopy, these species are described as S. yunnanensis sp. nov. and S. sinensis sp. nov. The primary features of S. yunnanens＆ are： elliptical to linear-elliptical valves with broadly rounded ends, straight filiform raphe, almost straight central endings and small, slightly expanding central pores, small central area, symmetrical or slightly asymmetrical central nodule. The primary features of S. sinensis are： elliptical valves, obtusely rounded ends, similar raphe and axial area, transapically less expanded central area, larger, elliptical central nodule. We compare these species to those of a similar shape and morphology.We describe two new species of Sellaphora from Lake Fuxian,Yunnan Plateau,China.Based on both light and scanning electron microscopy,these species are described as S.yunnanensis sp.nov.and S.sinensis sp.nov.The primary features of S.yunnanensis are:elliptical to linear-elliptical valves with broadly rounded ends,straight filiform raphe,almost straight central endings and small,slightly expanding central pores,small central area,symmetrical or slightly asymmetrical central nodule.The primary features of S.sinensis are:elliptical valves,obtusely rounded ends,similar raphe and axial area,transapically less expanded central area,larger,elliptical central nodule.We compare these species to those of a similar shape and morphology.

关 键 词：China DIATOM Lake Fuxian new species Sellaphora Yunnan Plateau 

分 类 号：Q948.8[生物学—植物学]