中国硅藻1新记录种——喙状比利牛斯山微小曲壳藻
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摘要
利用光学和扫描电子显微镜对采自武陵山区澧水的1种中国新记录硅藻——喙状比利牛斯山微小曲壳藻进行了形态研究。该种的鉴定特征为壳面线形披针形,具有喙状的末端,有壳缝壳面末端线纹呈略微会聚状或近平行排列,孔纹膜为筛状。该研究结果扩展了对喙状比利牛斯山微小曲壳藻形态结构和地理分布的认识。
A thoroughly study is carried out on an Achnanthidium species from Li River in Wuling Mountains area using light and scanning electric microscopy.The results confirm that this Achnanthidium species is indeed Achnanthidium rostropyrenaicum.A.rostropyrenaicumpossesses two key features:the linear-lanceolate valve outline with rostrate ends and the slightly convergent or nearly parallel striae distributed at the ends of the raphe valve.The hymens,which were not involved in the original description,also are studied.The hymenes are sieve-like.This study expands the knowledge of the morphological structure and geology distribution of A. rostropyrenaicum.
A thoroughly study is carried out on an Achnanthidium species from Li River in Wuling Mountains area using light and scanning electric microscopy.The results confirm that this Achnanthidium species is indeed Achnanthidium rostropyrenaicum.A.rostropyrenaicumpossesses two key features:the linear-lanceolate valve outline with rostrate ends and the slightly convergent or nearly parallel striae distributed at the ends of the raphe valve.The hymens,which were not involved in the original description,also are studied.The hymenes are sieve-like.This study expands the knowledge of the morphological structure and geology distribution of A. rostropyrenaicum.
引文
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[4]刘静,韦桂峰,胡韧,等.珠江水系东江流域底栖硅藻图集[M].北京:中国环境出版社,2013:1-108.
[5]于潘,尤庆敏,王全喜.九寨沟单壳缝目(硅藻门)的中国新记录植物[J].植物科学学报,2017,35(3):326-334.YU P,YOU Q M,WANG Q X.Newly recorded Monoraphidales(Bacillariophyta)species in Jiuzhaigou valley,China[J].Plant Science Journal,2017,35(3):326-334.
[6]马沛明,施练东,赵先富,等.一种淡水水华硅藻-链状弯壳藻(Achnanthidium catenatum)[J].湖泊科学,2013,25(1):156-162.MA P M,SHI L D,ZHAO X F,et al.A bloom-forming freshwater diatom:Achnanthidium catenatum[J].Journal of Lake Sciences,2013,25(1):156-162.
[7]ROUND F E,CRAWFORD R M,MANN D G.The Diatoms:Biology and Morphology of The Genera[M].Cambridge:Cambridge University Press,1990,1-747.
[8]LIU B,BLANCO S,LONG H,et al.Achnanthidium sinense sp.nov.(Bacillariophyta)from the Wuling Mountains Area,China[J].Phytotaxa,2016,284(3):194-202.
[9]TANG Z Y,WANG Z H,ZHENG C Y.Biodiversity in Chinas mountains[J].Frontiers in Ecology and the Environment,2006,4:347-352.
[10]LIU B,WILLIAMS D M,OU Y D.Adlafia sinensis sp.nov.(Bacillariophyceae)from the Wuling Mountains Area,China,with reference to the structure of its girdle bands[J].Phytotaxa,2017,298(1):43-54.
[11]LIU B,WILLIAMS D M,TAN L.Three new species of Ulnaria(Bacillariophyta)from the Wuling Mountains Area,China[J].Phytotaxa,2017,306(4):241-258.
[12]LIU B,WILLIAMS D M,BLANCO S,et al.Two new species of Luticola(Bacillariophyta)from the Wuling Mountains Area,China[J].Nova Hedwigia,Beiheft,2017,146:197-208.
[13]LIU B,BLANCO S,LAN Q Y.Ultrastructure of Delicata sinensis Krammer et Metzeltin and D.williamsii sp.nov.(Bacillariophyta)from China[J].Fottea,Olomouc,2018,18(1):30-36.
[14]LIU B,WILLIAMS,D M&LIU Q Y.A new species of Cymbella(Cymbellaceae,Bacillariophyceae)from China,possessing valves with both uniseriate and biseriate striae[J].Phytotaxa,2018,344(1):39-46.
[15]JTTNER I,CHIMONIDES J.,COX E J.Morphology,ecology and biogeography of diatom species related to Achnanthidium pyrenaicum(Hustedt)Kobayasi(Bacillariophyceae)in streams of the Indian and Nepalese Himalaya[J].Algological Studies,2011,136-137:45-76.