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Issue:ISSN 1000-7083
          CN 51-1193/Q
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Your Position :Home->Past Journals Catalog->2020 Vol.39 No.2

Zacco sinensis sp.nov.(Cypriniformes: Cyprinidae), a New Fish Species from Northern China
Author of the article:ZHU Lan1,2, YU Dan2, LIU Huanzhang2*
Author's Workplace:1. Dalian Ocean University, Dalian, Liaoning Province 116023, China;
2. Key Laboratory of Aquatic Biodiversity and Conversation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
Key Words:Zacco; new species; Daling River; cyt b gene
Abstract:An ichthyological survey was conducted in the Daling River and the Yellow River drainages from October 2017 to April 2018. A new species of the genus Zacco, Zacco sinensis sp. nov., was found and described in this study. The most prominent feature of the species is that its pelvic fin is not extending to the anus in mature males, larger nostrils, 41-45 lateral line scales, 8 scale rows above lateral line, and the predorsal length covers 48.3%-52.2% of standard length. With morphological comparison, this new species could be distinguished from Z. platypus by the following combination of characters: the head length covers 24.4%-27.1% (vs. 22.7%-24.8%) of standard length, the predorsal length covers 48.3%-52.2% (vs. 42.0%-47.6%) of standard length, the caudal-peduncle length covers 16.8%-19.2% (vs. 20.6%-23.7%) of standard length; larger (vs. smaller) nostrils. It could also be distinguished from its related congeners, Z. acanthogenys, by the following combination of characters: pelvic fin far from the anus (vs. near or beyond the anus); larger nostrils (vs. smaller); red upper eye (vs. black upper eye); 8 scale rows above lateral line (vs. 9 or 10). The average genetic distance between Z. sinensis and Z. platypus reached 0.048, while 0.081 between Z. sinensis and Z. acanthogenys based on the sequences of mitochondrial cytochrome b gene, supporting the notion that they belong to different species.
2020,39(2): 168-176 收稿日期:2019-10-14
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