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

Roxo FF, Silva GS, Zawadzki CH, Oliveira C - Zookeys (2014)

Bottom Line: 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 adipose-fin 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 figs 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.

View Article: PubMed Central - HTML - PubMed

Affiliation: Universidade Estadual Paulista, UNESP, Departamento de Morfologia, Laboratório de Biologia e Genética de Peixes, 18618-000, Botucatu,São Paulo State, Brazil.

ABSTRACT
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 adipose-fin 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 figs 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 Paraná 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 Espinhaço, probably as a result of headwater capture processes between the upper rio Paraná and rio Doce basins.

No MeSH data available.


Neoplecostomus doceensis, MZUSP 115486, male, 101.1 mm SL, holotype from the affluent of rio Gualaxo do Norte, rio Doce basin, municipality of Ouro Preto, Minas Gerais State, Brazil.
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Figure 1: Neoplecostomus doceensis, MZUSP 115486, male, 101.1 mm SL, holotype from the affluent of rio Gualaxo do Norte, rio Doce basin, municipality of Ouro Preto, Minas Gerais State, Brazil.

Mentions: Figure 1; Table 1


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

Roxo FF, Silva GS, Zawadzki CH, Oliveira C - Zookeys (2014)

Neoplecostomus doceensis, MZUSP 115486, male, 101.1 mm SL, holotype from the affluent of rio Gualaxo do Norte, rio Doce basin, municipality of Ouro Preto, Minas Gerais State, Brazil.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4195942&req=5

Figure 1: Neoplecostomus doceensis, MZUSP 115486, male, 101.1 mm SL, holotype from the affluent of rio Gualaxo do Norte, rio Doce basin, municipality of Ouro Preto, Minas Gerais State, Brazil.
Mentions: Figure 1; Table 1

Bottom Line: 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 adipose-fin 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 figs 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.

View Article: PubMed Central - HTML - PubMed

Affiliation: Universidade Estadual Paulista, UNESP, Departamento de Morfologia, Laboratório de Biologia e Genética de Peixes, 18618-000, Botucatu,São Paulo State, Brazil.

ABSTRACT
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 adipose-fin 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 figs 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 Paraná 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 Espinhaço, probably as a result of headwater capture processes between the upper rio Paraná and rio Doce basins.

No MeSH data available.