Volume 36 Issue 6
Nov.  2015
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Wei ZHOU, Min-hui LI, Chun-ping WANG, Mi QI. Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China. Zoological Research, 2015, 36(6): 348-353. doi: 10.13918/j.issn.ZoolRes.2015.6.348
Citation: Wei ZHOU, Min-hui LI, Chun-ping WANG, Mi QI. Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China. Zoological Research, 2015, 36(6): 348-353. doi: 10.13918/j.issn.ZoolRes.2015.6.348

Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China

doi: 10.13918/j.issn.ZoolRes.2015.6.348
  • Received Date: 2015-05-06
  • Publish Date: 2015-11-18
  • It is practically difficult to differentiate Placocheilus robustus and Placocheilus caudofasciatus from Red River drainage of China. Without stated reasons, P. robustus has been assumed as the synonyms of P. caudofasciatus. The present study aims to decipher the morphological differences between two species so as to provide reliable clues for their classification by multivariate morphometry. A total of 72 specimens of two species in genus Placocheilus were examined. Besides morphological character comparisons, 10 anatomic landmarks were utilized and 23 frame structures and 15 general characters measured. The scatter plot results of principal component analysis showed that all specimens were clustered together and could not be defined as two distinct species. No significant morphological differences existed in four diagnostic characters between P. robustus and P. caudofasciatus. Thus the results of the present study fail to support P. robustus as a valid and independent species.
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  • [1] Bookstein FL, Chernoff B, Elder RL, Humphries JM, Smith GR, Strauss RE. 1985. Morphometrics in Evolutionary Biology. Philadelphia: The Academy of Natural Science Special Publication.
    [2] Cai MJ, Zhang MY, Zeng QL, Liu HZ 2001. A study on morphometrics of the genus Meglobrama . Acta Hydrobilogica Sinica , 25(6): 631-635. (in Chinese)
    [3] Chen XY. 2013. Checklist of fishes of Yunnan. Zoological Research , 34(4): 281-343. (in Chinese)
    [4] Chen ZM, Pan XF, Xiao H, Yang JX . 2012. A new Cyprinidn species , Placocheilus dulongensis , from the upper Irrawaddy system in Northwastern Yunnan, China. Zoologischer Anzeiger , 251(3): 215-222.
    [5] Chu XL, Cui GH. 1989. Labeoninae. In: Chu, XL & Chen YR (eds), The Fishes of Yunnan, China. Part I. Beijing: Science Press, 229-286.
    [6] Cui GH, Li ZY. 1984. Description of a new cyprinid fish of the subfamily Barbinae from China. Acta Zootaxonomica Sinica , 9(1): 110-112. (in Chinese)
    [7] Kottelat M. 2001. Fishes of Laos. Colombo, Sri Lanka: Wildlife Heritage Trust Publications.
    [8] Li MH, Zhou W, Yuan J, Qi M, Li QS. 2016. Comparison study on species status of Placocheilus (Teleostei: Cypriniformes) from Red River. Journal of Guangxi Normal University (Natural Science Edition) . (in Chinese) (Accepted)
    [9] Li X, Li FL, Liu K, Zhou W. 2008. A study on morphologic differentiation and taxonomic status of Pseudecheneis (Siluriformes: Sisoridae) from Irrawaddy and Salween drainages, China. Zoological Research, 29(1): 83-88. (in Chinese)
    [10] Min R, Ye L, Chen XY, Yang JX. 2009. Morphometrics analysis of Sinocyclocheilus grahami (Cypriniformes: Cyprinidae). Zoological Research, 30(6): 707-712. (in Chinese)
    [11] Wang WY. 2012. Systematrics, Phylogenetics and Biogeography of Several Chinese Labeononiae Subgroups and Garra . A dissertation for doctoral degree. Graduate University of Chinese Academy of Sciences (Kunming Institute of Zoology, Chinese Academy of Sciences), 1-144.
    [12] Wu XW. 1977. Cyprinidae Fishes of China. Part II. Shanghai: Science & Technology Press.
    [13] Xie ZG, Xie CX, Zhang E 2003. Morphological variations among the Chinese species of Sinibrama (Pisces: Teleostei: Cyprinidae), with comments on their species validities. Zoological Research , 24(5): 321-330. (in Chinese)
    [14] Yang Q, Zhou W, Shu SS. 2011. Morphological varations and differentiation of Discogobio yunnanensis from different population. Acta Zootaxonomica Sinica , 36(1): 117-124. (in Chinese)
    [15] Yang XP, Zhang MY, Liu HZ. 2003. Studies on morphometrics of the genus Saurogobio . Acta Hydrobilogica Sinica , 26(3): 281-285. (in Chinese)
    [16] Yang X, Zhou W, Li X, Li QS. 2013. Morphological differentiation of Garra orientalis (Cyprinidae) among different geographical populations. Zoological Research , 34(5): 471-474. (in Chinese)
    [17] Zhang E, He SP, Chen YY. 2002. Revision of cyprinid genus Placocheilus Wu, 1977 in China, with description of a new species form Yunnan. Hydrobiologia , 487 (1): 207-217.
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Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China

doi: 10.13918/j.issn.ZoolRes.2015.6.348

Abstract: It is practically difficult to differentiate Placocheilus robustus and Placocheilus caudofasciatus from Red River drainage of China. Without stated reasons, P. robustus has been assumed as the synonyms of P. caudofasciatus. The present study aims to decipher the morphological differences between two species so as to provide reliable clues for their classification by multivariate morphometry. A total of 72 specimens of two species in genus Placocheilus were examined. Besides morphological character comparisons, 10 anatomic landmarks were utilized and 23 frame structures and 15 general characters measured. The scatter plot results of principal component analysis showed that all specimens were clustered together and could not be defined as two distinct species. No significant morphological differences existed in four diagnostic characters between P. robustus and P. caudofasciatus. Thus the results of the present study fail to support P. robustus as a valid and independent species.

Wei ZHOU, Min-hui LI, Chun-ping WANG, Mi QI. Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China. Zoological Research, 2015, 36(6): 348-353. doi: 10.13918/j.issn.ZoolRes.2015.6.348
Citation: Wei ZHOU, Min-hui LI, Chun-ping WANG, Mi QI. Morphometric studies of genus Placocheilus (Teleostei: Cypriniformes) from Red River, China. Zoological Research, 2015, 36(6): 348-353. doi: 10.13918/j.issn.ZoolRes.2015.6.348
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