Distribution Pattern of Loaches (Teleostei: Cobitoidea) in the River East Tiaoxi, China
Distribution Pattern of Loaches (Teleostei: Cobitoidea) in the River East Tiaoxi, China
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DOI：
10.25225/fozo.v60.i4.a10.2011
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
Tatsuro Sato;Jun Nakajima;Liangliang Huang;Y. Shimatani;Shun K. Hirota;C. Wood;Y. Kano
中科院分区：
文献类型：
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作者：
Tatsuro Sato;Jun Nakajima;Liangliang Huang;Y. Shimatani;Shun K. Hirota;C. Wood;Y. Kano
抽象的。本文报道了东条溪泥鳅的分布格局。8种泥鳅（Cobitis sinensis，C. dolichorhynchus、长喙角蝉C.在野外调查的90个地点发现了5种鱼类（包括大鳞副泥鳅、泥鳅、扁鳅、平洲Vanmanenia pingchowensis和狭体Vanmanenia stenosoma）。地理分布的宏观尺度分析表明，相关物种的分离按照纵向变化沿着河道。M.大鳞鳗分布范围较广，从中游到上游，而大鳞鳗仅分布于下游。3条刺鳅，即C. dolichorhynchus、长喙角蝉C. sinensis和C. laterimaculata，分别分布于中游、中上游和上游河段。平洲葡萄分布在上游，狭体葡萄分布在上游。更详细的微尺度分析表明，L。tchangi和两种Vanmanenia，V.stenosoma和V.pingchowensis主要分布在“Riffle”（激流）生境中，而两种刺鳅C. laterimaculata和C.中华绒螯蟹更喜欢“池”（lentic）栖息地。这些结果表明，泥鳅的相关物种更喜欢相似的栖息地单位在河东苕溪系统。
Abstract. The distribution patterns of loaches (Teleostei: Cobitoidea) were revealed in the River East Tiaoxi in China. Eight loach species (Cobitis sinensis, C. dolichorhynchus, C. laterimaculata, Misgurnus anguilicaudatus, Paramisgurnus dabryanus, Leptobotia tchangi, Vanmanenia pingchowensis and V. stenosoma) were found in field surveys at 90 sites. A macroscale analysis of the geographical distribution showed that related species were segregated in accordance with longitudinal alterations along the river course. M. anguillicaudatus was widely distributed from the middle reaches to upstream of the river whereas the related species, P. dabryanus, was distributed only downstream. Three spined loaches, namely C. dolichorhynchus, C. sinensis, and C. laterimaculata, were distributed in the middle reaches, the middle to upstream reaches, and the upstream section of the river, respectively. The distribution of V. pingchowensis was further upper stream than that of V. stenosoma in the upstream section. More detailed microscale analysis revealed that L. tchangi and the two Vanmanenia species, V. stenosoma and V. pingchowensis were mostly found in the ‘Riffle’ (lotic) habitats, whereas the two spined loaches, C. laterimaculata and C. sinensis preferred the ‘Pool’ (lentic) habitats. These results demonstrated that related loach species preferred similar habitat units in the River East Tiaoxi system.