Triplophysa wulongensis, a new species of cave-dwelling loach (Teleostei, Nemacheilidae) from Chongqing, Southwest China

Autor: Shijing Chen, Bakhtiyor Sheraliev, Lu Shu, Zuogang Peng
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: ZooKeys, Vol 1026, Iss , Pp 179-192 (2021)
Druh dokumentu: article
ISSN: 1313-2970
DOI: 10.3897/zookeys.1026.61570
Popis: We describe a new species of cave-dwelling loach, Triplophysa wulongensis sp. nov., based on specimens collected in a subterranean pool in a cave in Wulong County, Chongqing, Southwest China. The pool is connected to the Wujiang River drainage. Triplophysa wulongensis differs from its congeners by the following combination of characters: eyes present, caudal fin with 18 branched rays; posterior chamber of the air bladder degenerate; stomach U-shaped; intestine without bends or loops immediately posterior to stomach; body smooth and scaleless, and lateral line complete. The mitochondrial cytochrome b sequence differs from those of other published sequences of species of Triplophysa by 14.9–24.9% in K2P distance. Phylogenetic analysis based on cytochrome b gene sequences recovered T. wulongensis as sister taxon to all other cave-dwelling species of Triplophysa.
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