Journal Article
Trichomycterus dali: a new highly troglomorphic catfish (Siluriformes: Trichomycteridae) from Serra da Bodoquena, Mato Grosso do Sul State, Central Brazil
Rizzato, P.P., Costa, E.P.D., Trajano, E. and Bichuette, M.E.
Record Number:
2588
Year:
2011
Journal:
Neotropical Ichthyology
Pages:
477-491
Volume:
9
Abstract:
Trichomycterus dali, new species, is described from flooded limestone caves in Serra da Bodoquena karst area, State of Mato Grosso do Sul, Central Brazil. The new species is diagnosed by a unique character in the genus, the presence of conspicuous, ridge-like adipose folds lining dorsally throughout the body. Trichomycterus dali can be further distinguished readily from epigean congeners by the reduction of eyes and skin pigmentation (except for T. gorgona), and from remaining congeners (i.e., all hypogean plus T. gorgona) by the total loss of eyes, not visible externally (except for T. sandovali and T. spelaeus). Other diagnostic features includes very long barbels, especially the nasal (99.3-143.5% HL) and the maxillary (97.0-131.3% HL), pectoral-fin ray count reaching 1,9 and a unique cranial fontanel with a conspicuous constriction on the meeting point of supraoccipital and the two frontal bones. The troglobitic status of the species is suggested by the presence of troglomorphisms on an advanced degree, especially the reduction of skin pigmentation, the total loss of eyes and the enlarged barbels. In addition, the presence of a well developed adipose fold in adults may indicate a distinctive adaptation acquired by neoteny to withstand the food scarce conditions of its hypogean habitat.
Times Cited:
1
Relevent Species:
Related Records:
Borghezan, R. (2008)
Caracterizacao da ictiocenose em poc¸oes da Gruta das Fadas e aspectos biologicos de Rhamdia sp. (Siluriformes: Heptapteridae) e Ancistrus sp. (Siluriformes: Loricariidae), Serra da Bodoquena, Mato Grosso do Sul.
Cordeiro, L.M (2008)Fauna cavernıcola da Serra da Bodoquena: revisao bibliografica e um estudo de ecologia de comunidades.
Rizzato, P.P., Costa, E.P.D., Trajano, E. and Bichuette, M.E. (2011)Trichomycterus dali: a new highly troglomorphic catfish (Siluriformes: Trichomycteridae) from Serra da Bodoquena, Mato Grosso do Sul State, Central Brazil
Cordeiro, L.M., Borghezan, R. and Trajano, E. (2013)Distribuição, riqueza e conservação dos peixes troglóbios da Serra da Bodoquena,
MS (Teleostei: Siluriformes).
Distribution, richness and conservation of troglobitic fishes from Serra
da Bodoquena, MS (Teleostei)
Borghezan. R. (2013)Ecologia populacional e cornportamento de peixes subterraneos, Rhamdia sp. n. e Ancistrus sp. n. da area carstica da Serra da Bodoquena, Mato Grosso do Sul (Siluriformes: Heptapteridae, Loricariidae)
von Schimonsky, D.M. and Bichuette, M.E. (2013)A expressão do comportamento agonístico em Ituglanis ramiroi Bichuette and Trajano 2004 (Siluriformes: Trichomycteridae) e sua aplicação para conservação
Cordeiro, L.M., Borghezan, R. and Trajano, E. (2014)Subterranean biodiversity in the Serra da Bodoquena karst area, Paraguay river basin, Mato Grosso do Sul, Southwestern Brazil
Cordeiro, L.M. (2014)Distribuicao, filogeografia e ecologia de bagres troglobios do genero Trichomycterus
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Colihueque, N., Corrales, O, and Yáñez, M. (2017)Morphological analysis of Trichomycterus areolatus Valenciennes,
1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae)
Flórez, J.S., Cadena, C.D., DoNascimiento, C. and Torres, M. (2020)Repeated colonization of caves leads to phenotypic convergence in catfishes (Siluriformes: Trichomycterus) at a small geographical scale
Flórez, J.S., Cadena, C.D., Donascimiento, C. and Torres, M. (2021)Repeated colonization of caves leads to phenotypic convergence in catfishes (Siluriformes: Trichomycterus) at a small geographical scale
Vilardo, P.J., Katz, A.M. and Costa, W.J.E.M. (2023)Phylogeny and historical biogeography of neotropical catfishes Trichomycterus (Siluriformes: Trichomycteridae) from eastern Brazil