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Issue: Vol. 2557 No. 1: 3 Aug. 2010
Type: Articles
Published: 2010-08-03
DOI: 10.11646/zootaxa.2557.1.1
Page range: 1–18
Abstract views: 58
PDF downloaded: 25

A new species of Lepidocephalichthys (Teleostei: Cobitidae) with distinctive sexual dimorphism and comments on relationships in southern lineages of Cobitidae

Florida Museum of Natural History, University of Florida, Dickinson Hall, Gainesville, FL 32611, USA Department of Zoology, University of Florida, 211 Bartram Hall, Gainesville, FL 32611, USA
Department of Zoology, University of Florida, 211 Bartram Hall, Gainesville, FL 32611, USA
Department of Equine Science, Faculty of Veterinary Medicine, Chiang Mai University,Chonlapratan Rd, Mae Hea, Muang, Chiang Mai, Thailand, 50100
The Northeastern Research Institute for Petrified Wood and Mineral Resources, Nakorn Ratchasima Rajabhat University, 184 Moo 7 Tambon Suranaree, Mouang District, Nakorn Ratchasima, Thailand, 30000
Department of Fisheries, Faculty of Agriculture, Ubonratchathani University 85, Sathollamark Rd., Warinchamrap, Ubon Ratchathani, Thailand, 34190
Department of Fisheries, Faculty of Agriculture, Ubonratchathani University 85, Sathollamark Rd., Warinchamrap, Ubon Ratchathani, Thailand, 34190
Fish Cypriniformes loaches phylogenetics dichromatism Thailand Vietnam Mun River Mekong

Abstract

Lepidocephalichthys (Telostei:Cobitidae) is diagnosed as being unique among cobitids in having the 7–8th pectoral rays of mature males modified. Recently collected material from Thailand included a new species of Lepidocephalichthys in which mature males have a large (extending over ~75% of the fin-ray length) dorsally projecting and serrated flange and a ventrally projecting flange. The ventrally projecting structure is unique among cobitids. An expanded phylogenetic analysis of cobitids, including previously published sequences and new material including the new species, reinforces the monophyly of Lepidocephalichthys. Relationships within southern lineages of cobitids, and the unusual habitat of the new species are discussed.

References

  1. Chen, Y.-X. & Chen, Y.-F. (2007) Bibarba bibarba, a new genus and species of Cobitinae (Pisces: Cypriniformes: Cobitidae) from Guangxi Province (China). Zoologischer Anzeiger, 246, 103–113.

    Havird, J.C. & Page, L.M. (2010) A revision of Lepidocephalichthys (Teleostei: Cobitidae) with descriptions of two new species from Thailand and Myanmar. Copeia, 2010, 137–159.

    Hubbs, C.L. & Lagler, K.F (1964) Fishes of the Great Lakes Region. University of Michigan Press, Ann Arbor. 213 pp.

    Kim, D.S., Nam, Y.K. & Jo, J.-Y. (1997) Effect of oestradiol-17β immersion treatments on sex reversal of mud loach, Misgurnus mizolepis (Günther). Aquaculture Research, 28, 941–946.

    Kottelat, M. & Lim, K.K.P. (1992) A synopsis of the Malayan species of Lepidocephalichthys, with descriptions of two new species (Teleostei: Cobitidae). Raffles Bulletin of Zoology, 40, 201–220.

    Kottelat, M. & Tan, H.H. (2008) Kottelatlimia hipporhynchos, a new species of loach from southern Borneo (Teleostei: Cobitidae). Zootaxa, 1967, 63–72.

    Larkin, M.A., Blackshields, G., Brown, N.P., Chenna, R., McGettigan, P.A., McWilliam, H., Valentin, F., Wallace, I.M. , Wilm, A., Lopez, R., Thompson, J.D., Gibson, T.J. & Higgins, D.G. (2007) Clustal W and Clustal X version 2.0. Bioinformatics, 23, 2947–2948.

    Nalbant, T.T. (1963) A study of the genera of Botiinae and Cobitinae (Pisces, Ostariophysi, Cobitidae). Travaux du Museum d'Histoire Naturelle "Grigore Antipa", 4, 343–379.

    Nalbant, T.T. (1994) Studies on loaches (Pisces: Ostariphysi: Cobitidae). 1. An evaluation of the valid genera of Cobitinae. Travaux du Museum d'Histoire Naturelle "Grigore Antipa", 34, 375–380.

    Posada, D. & Crandall, K.A. (1998) MODELTEST: Testing the model of DNA substitution. Bioinformatics, 14, 817–818.

    Ronquist, F. & Huelsenbeck, J.P. (2003) MRBAYES 3: Bayesian phylogenetic inference under mixed models. Bioinformatics, 19, 1572–1574.

    Sawada, Y. (1982) Phylogeny and zoogeography of the superfamily Cobitoidea (Cyprinoidei, Cypriniformes). Hokkaido University Memoirs of the Faculty of Fisheries, 28, 65–223.

    Šlechtová, V., Bohlen, J., Freyhof, J. & Ráb, P. (2006) Molecular phylogeny of the Southeast Asian freshwater fish family Botiidae (Teleostei: Cobitoidea) and the origin of polyploidy in their evolution. Molecular Phylogenetics and Evolution, 39, 529–541.

    Šlechtová, V., Bohlen, J. & Tan, H.H. (2007) Families of Cobitoidea (Teleostei; Cypriniformes) as revealed from nuclear genetic data and the position of the mysterious genera Barbucca, Psilorhynchus, Serpenticobitis and Vaillantella. Molecular Phylogenetics and Evolution, 44, 1358–1365.

    Šlechtová, V., Bohlen, J. & Perdices, A. (2008) Molecular phylogeny of the freshwater fish family Cobitidae (Cypriniformes: Teleostei): Delimination of genera, mitochondrial introgression and evolution of sexual dimorphism. Molecular Phylogenetics and Evolution, 47, 812–831.

    Swofford, D.L. (2002) PAUP*: Phylogenetic Analysis Using Parsimony (*and other methods). v. 4.0b10. Sinauer Associates, Sunderland, Massachusetts.