Molecular analysis reveals hidden diversity in Zungaro (Siluriformes: Pimelodidade): a genus of giant South American catfish
The genus Zungaro contains some of the largest catfish in South America. Two valid species are currently recognized: Zungaro jahu, inhabiting the Paraná and Paraguay basins, and Zungaro zungaro, occurring in the Amazonas and Orinoco basins. Analysing Zungaro specimens from the Amazonas, Orinoco, Paraguay and Paraná basins, based on the sequencing of COI and D-loop, we found at least three MOTUs, indicating the existence of hidden diversity within this fish group. Considering the ecological and economic values of this fish, our results are surely welcomed for its conservation, disclosing new findings on its diversity and pointing out the necessity for a detailed taxonomic revision.
KeywordsDNA barcode Fish taxonomy Neotropical fish Juruena river Amazon
The authors thank ICMBio/IBAMA and Secretaria de Estado de Meio Ambiente do Mato Grosso (SEMA/MT) for the fish collection authorization (37922-1). We are also grateful to Christian Cramer, Carolina Doria, Emiko K. Resende, Débora K. S. Marques, Maurício Carrillo and Neusa Arenhart for the assistance in obtaining some tissue samples. AAP thanks CAPES for a fellowship. This work is due to SISBIOTA network—Top Predator supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, 563299/2010-0) and Fundação de Apoio à Pesquisa do Estado de São Paulo (FAPESP, 10/52315-7) and Rede BrBOL (CNPq, 563299/2010-0).
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Conflict of interest
The authors declare that they have no conflict of interest.
- Agostinho AA, Gomes LC, Suzuki HI, Julio Júnior HF (2003) Migratory fishes of the upper paraná river basin, Brazil. In: Carosfeld J, Harvey B, Ross CV, Baer A (eds) Migratory fishes of south america: biology, fisheries and conservation status. The World Bank, International Development Centre, Ottowa, pp 19–98Google Scholar
- Avise JC (2004) Molecular markers, natural history and evolution, 2nd edn. Sinauer, SunderlandGoogle Scholar
- Da Graça WJ, Pavanelli CS (2007) Peixes da Planície de Inundação do Alto Rio Paraná e Áreas Adjacentes. EDUEM, MaringáGoogle Scholar
- Lundberg JG, Littmann MW (2003) Family Pimelodidae (Long-Whiskered Catfishes). In: Reis RE, Kullander SO, Ferraris CJ Jr (eds) Check list of the freshwater fishes of South and Central America. EDIPUCRS, Porto Alegre, pp 432–446Google Scholar
- Sambrook J, Fritish EF, Maniatis T (1989) Molecular cloning: a laboratory manual. Cold Spring Harbor Laboratory Press, Cold Spring HarborGoogle Scholar
- Shibatta OA, Dias JHP (2006) 40 peixes do Brazil: CESP 40 anos. Doiis, Rio de JaneiroGoogle Scholar