Friday, April 21, 2017

[Ichthyology • 2017] Microphysogobio zhangi • A New Species of Microphysogobio (Cypriniformes: Cyprinidae) from Guangxi Province, Southern China

Microphysogobio zhangi  
Huang, Zhao, Chen & Shao, 2017

Microphysogobio zhangi n. sp., a new cyprinid species is described from Guangxi Province, China. Morphological and molecular evidence based on mitochondrial DNA Cytochrome b (Cyt b) sequence were used for comparing this new species and other related species. The phylogenetic tree topology revealed that this new species is closely related to M. elongatus and M. fukiensis. We also observed the existence of a peculiar trans-river gene flow in the Pearl River and the Yangtze River populations, and speculated that it was caused by an ancient artificial canal, the Lingqu Canal, which forming a pathway directly connecting these two rivers.

Key words: Taxonomy, Gudgeon, Cytochrome b, Freshwater Fish, Pearl River.

Fig. 2. The specimen photographs of Microphysogobio zhangi n. sp.,
A, holotype, ASIZB 204677, 77.1 mm SL. B, the same individual, dorsal view of head. 

Etymology: The Latinized specific name, “zhangi” is derived from the name of the Chinese ichthyologist “Professor Chunguang Zhang” in recognition of his great contribution to the fish taxonomic studies in China.

Distribution: Known only from the middle reaches of the Yu River and the Li River, two tributaries of the Pearl River, and the Xiang River, a tributary of the Yangtze River, located in Guangxi and Hunan Provinces of China

Shih-Pin Huang, Yahui Zhao, I-Shiung Chen and Kwang-Tsao Shao. 2017. A New Species of Microphysogobio (Cypriniformes: Cyprinidae) from Guangxi Province, Southern China.
 Zoological Studies. 56:08. DOI: 10.6620/ZS.2017.56-08 

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