Taxonomic review of the species complex Potamotrygon scobina Garman, 1913 (Chondri...
| Full text | |
| Author(s): |
Fontenelle, Joao Pedro
;
De Carvalho, Marcelo R.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | Zootaxa; v. 4310, n. 1, p. 1+, AUG 21 2017. |
| Web of Science Citations: | 5 |
| Abstract | |
Potamotrygon scobina Garman, 1913, described from Cameta, rio Tocantins, lower Amazon basin, is taxonomically reviewed through an extensive morphological study of internal and external features. Specimens identified as P. scobina from different locations of the Amazon basin were also studied. The identity of P. scobina, its morphology, and distribution are redefined. In addition, three new species closely related to P. scobina are described from Brazil: Potamotrygon adamastor, sp. nov., from rio Uraricoera, rio Branco system, upper Amazon basin; Potamotrygon amazona, sp. nov., from rio Jurua, upper Amazon basin; and Potamotrygon garmani, sp. nov., from the mid to upper rio Tocantins. These three new species do not occur sympatrically with P. scobina, as far as known. Together with P. scobina and P. limai Fontenelle, Silva \& Carvalho, 2014, the new species have three angular cartilages of different sizes, a condition not seen in any other potamotrygonin (which have either one or two angulars). Diagnostic characters in combination are primarily morphometric proportions, especially tail length and width, dermal denticles and tail thorns (their relative size, number, morphology, and distribution), tooth size and number of rows, and color pattern. (AU) | |
| FAPESP's process: | 12/09877-0 - Comparative analysis of the morphology of the feeding apparatus in Myliobatiform rays (Chondrichthyes: Batoidea) |
| Grantee: | Marcelo Rodrigues de Carvalho |
| Support type: | Regular Research Grants |
| FAPESP's process: | 12/02349-8 - Taxonomic review of the family Gymnuridae (Chondrichthyes: Myliobatoidei) |
| Grantee: | Marcelo Rodrigues de Carvalho |
| Support type: | Regular Research Grants |
| FAPESP's process: | 11/03952-7 - Morphology and systematics of Potamotrygon scobina Garman, 1913 (Chondrichthyes: Myliobatiformes: Potamotrygonidae): a species complex? |
| Grantee: | João Pedro Fontenelle de Araújo Freire da Silva |
| Support type: | Scholarships in Brazil - Master |
| FAPESP's process: | 12/05391-5 - Molecular evolution of regulatory regions of HOX genes associated with the morphology of fish fins, with special emphasis on Chondrichthyes |
| Grantee: | Marcelo Rodrigues de Carvalho |
| Support type: | Regular Research Grants |
| FAPESP's process: | 12/19479-1 - Taxonomic review of the species complex Potamotrygon scobina Garman, 1913 (Chondrichthyes: Myliobatiformes: Potamotrygonidae): implications on the biogeography of the family Potamotrygonidae and the South American Continent |
| Grantee: | João Pedro Fontenelle de Araújo Freire da Silva |
| Support type: | Scholarships abroad - Research Internship - Master's degree |