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A new loach species of Troglonectes (Teleostei: Nemacheilidae) from Guangxi, China

Li-Xiao Zhao Jia-Hui Liu Li-Na Du Fu-Guang Luo

Li-Xiao Zhao, Jia-Hui Liu, Li-Na Du, Fu-Guang Luo. A new loach species of Troglonectes (Teleostei: Nemacheilidae) from Guangxi, China. Zoological Research, 2021, 42(4): 423-427. doi: 10.24272/j.issn.2095-8137.2021.028
Citation: Li-Xiao Zhao, Jia-Hui Liu, Li-Na Du, Fu-Guang Luo. A new loach species of Troglonectes (Teleostei: Nemacheilidae) from Guangxi, China. Zoological Research, 2021, 42(4): 423-427. doi: 10.24272/j.issn.2095-8137.2021.028

广西洞鳅属鱼类(鲤形目:条鳅科)一新种记述

doi: 10.24272/j.issn.2095-8137.2021.028

A new loach species of Troglonectes (Teleostei: Nemacheilidae) from Guangxi, China

Funds: This study was funded by the Middle-Aged and Young Teachers’ Basic Ability Promotion Project of Guangxi, China (2020KY02026), National Project of Undergraduate on Innovation and Entrepreneurship (202110602064), Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education (ERESEP2020Z22), and Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University (19A0104), Guangxi Natural Science Foundation Program (2020GXNSFAA238031)
More Information
  • 摘要: 目前已记录的洞鳅属种类有17种,2017年1月,在广西壮族自治区河池市同进村采集到6属条鳅科标本,形态特征和分子(线粒体基因cty b)结果均支持该批标本为洞鳅属一新种。新种与洞鳅属其它种的区别特征包括:眼正常;除头部和胸腹部外,全身被有细小的鳞片;侧线不完全;尾鳍略凹。该新种被命名为河池洞鳅 Troglonectes hechiensis sp. nov.。
  • Figure  1.  Phylogeny, collection sites and photos of Troglonectes hechiensis sp. nov. (KIZ2021000001)

    A: Bayesian phylograms of nemachilids inferred from cyt b gene. B: Collection site of Troglonectes hechiensis sp. nov. (black triangle) in Guangxi, China. C–E: Lateral, dorsal and ventral views of T. hechiensis sp. nov. Scale bar: 1 cm.

    Table  1.   Morphometric and meristic data of Troglonectes hechiensis sp. nov. Range, mean, and standard deviation (Mean±SD) include holotype values

    HolotypeRange (n=5)Mean±SD
    Total length (mm)60.456.6–69.363.2±5.5
    Standard length (mm)50.947.4–58.353.0±4.8
    Percent of standard length (%)
    Deepest body depth16.115.0–17.416.0±0.8
    Lateral head length24.623.5–25.124.4±0.6
    Predorsal length56.954.4–59.356.7±1.6
    Prepelvic length56.755.9–60.457.5±1.6
    Preanal length79.278.2–80.979.7±1.2
    Preanus length77.075.3–78.077.0±0.9
    Caudal peduncle length12.712.0–13.612.7±0.5
    Caudal peduncle depth8.68.7–10.39.3±0.6
    Head width14.214.3–16.014.9±0.7
    Percent of lateral head length (%)
    Eye diameter18.317.7–21.419.2±1.4
    Interorbital width28.427.1–30.428.7±1.4
    Snout length35.332.4–36.234.6±1.7
    Head width57.959.2–64.41.3±2.6
    Head depth51.451.9–54.252.5±1.0
    Percent of caudal peduncle length (%)
    Caudal peduncle depth67.872.7–76.073.8±3.2
    Dorsal-fin raysIV,8IV, 88
    Pectoral-fin raysI, 11I, 1111
    Pelvic-fin raysI, 6I, 5–65.7±0.5
    Anal-fin raysIII, 5III, 55
    Caudal-fin branched rays1413–1413.5±0.6
    下载: 导出CSV
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  • ZR-2021-028 Supplementary Table S1.pdf
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出版历程
  • 收稿日期:  2021-01-28
  • 录用日期:  2021-04-20
  • 网络出版日期:  2021-06-09
  • 刊出日期:  2021-07-18

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