Description of a new troglobitic Sinocyclocheilus (Pisces, Cyprinidae) species from the upper Yangtze River Basin in Guizhou, South China

Sinocyclocheilus guiyang , a new troglobitic species from a subterranean tributary of the upper Yangtze Basin in Guiyang City, Guizhou Province, China is described in the present study. The new species is distinguishable from its congeneric species by a combination of the following characters: tip o...

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Published in:Zoosystematics and Evolution 2024-05, Vol.100 (2), p.515-529
Main Authors: Shao, Wei-Han, Cheng, Guang-Yuan, Lu, Xiao-Long, Zhou, Jia-Jun, Zeng, Zhi-Xuan
Format: Article
Language:English
Subjects:
Cytochrome b
Ethanol
Morphology
New species
Phylogenetics
River basins
Sinocyclocheilus
Species extinction
Zoology
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creator Shao, Wei-Han
Cheng, Guang-Yuan
Lu, Xiao-Long
Zhou, Jia-Jun
Zeng, Zhi-Xuan
description Sinocyclocheilus guiyang , a new troglobitic species from a subterranean tributary of the upper Yangtze Basin in Guiyang City, Guizhou Province, China is described in the present study. The new species is distinguishable from its congeneric species by a combination of the following characters: tip of maxillary barbel reaching to posterior edge of orbit; forehead horn absent; eye absent (or highly reduced) and tip of pectoral fins not significantly extending beyond the base of the pelvic fin. Molecular evidence, based on the mitochondrial cytochrome b (cyt b ) gene, further supports the validity of the species and also reveals its close relationship with S. cyphotergous , S. multipunctatus , S. punctatus and S. sanxiaensis. In addition, the new species faces a high risk of extinction, underscoring the urgency for habitat protection measures within its limited range.
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subjects Cytochrome b
Ethanol
Morphology
New species
Phylogenetics
River basins
Sinocyclocheilus
Species extinction
Zoology
title Description of a new troglobitic Sinocyclocheilus (Pisces, Cyprinidae) species from the upper Yangtze River Basin in Guizhou, South China
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