Neoplecostomus doceensis: a new loricariid species (Teleostei, Siluriformes) from the rio Doce basin and comments about its putative origin


Autoria(s): Roxo, Fabio F.; Silva, Gabriel S. C.; Zawadzki, Claudio H.; Oliveira, Claudio
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

18/03/2015

18/03/2015

01/01/2014

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Processo FAPESP: 12/01622-2

A new species of Neoplecostomus is described from the rio Doce basin representing the first species of this genus in the basin. The new species is distinguished from its congeners by having enlarged, fleshy folds between dentaries, two or three series of developed papillae anterior to premaxillary teeth and a adiposefin membrane present, and by lacking enlarged odontodes along snout lateral margins in mature males, a well-developed dorsal-fin spinelet wider than dorsal-fin spine base, lower number of lateral-line plates and developed membrane on the dorsal portion of the first, second and third pelvic-fin branched rays. Additionally, we present a brief discussion of biogeographic scenarios that may explain the distribution of the new species in the rio Doce basin. We suggested that the ancestral lineage of the new species reached the rio Doce from the upper portions of rio Parana drainages about 3.5 Mya (95% HPD: 1.6-5.5) indicating a colonization route of the N. doceensis ancestral lineage from the south end of Serra do Espinhaco, probably as a result of headwater capture processes between the upper rio Parana and rio Doce basins.

Formato

115-127

Identificador

http://dx.doi.org/10.3897/zookeys.440.8203

Zookeys. Sofia: Pensoft Publ, n. 440, p. 115-127, 2014.

1313-2989

http://hdl.handle.net/11449/117535

10.3897/zookeys.440.8203

WOS:000341623500005

WOS000341623500005.pdf

Idioma(s)

eng

Publicador

Pensoft Publ

Relação

Zookeys

Direitos

openAccess

Palavras-Chave #Brazilian shield #catfishes #freshwater #ichthyology #Neoplecostominae #Neotropical fishes #Ostariophysi
Tipo

info:eu-repo/semantics/article