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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Potamotrygon limai, sp nov., a new species of freshwater stingray from the upper Madeira River system, Amazon basin (Chondrichthyes: Potamotrygonidae)

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Author(s):
Fontenelle, Joao Pedro [1] ; Da Silva, Joao Paulo C. B. [1] ; De Carvalho, Marcelo R. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Zootaxa; v. 3765, n. 3, p. 249-268, FEB 18 2014.
Web of Science Citations: 18
Abstract

Potamotrygon limai, sp. nov., is described from the Jamari River, upper Madeira River system (Amazon basin), state of Rondonia, Brazil. This new species differs from congeners by presenting unique polygonal or concentric patterns formed by small whitish spots better defined over the posterior disc and tail-base regions. Potamotrygon limai, sp. nov., can be further distinguished from congeners in the same basin by other characters in combination, such as two to three rows of midtail spines converging to a single irregular row at level of caudal sting origin, proportions of head, tail and disc, patterns of dermal denticles on rostral, cranial and tail regions, among other features discussed herein. Potamotrygon limai, sp. nov., is most similar to, and occurs sympatrically with, P. scobina, and is distinguished from it by lacking ocellated spots on disc, by its characteristic polygonal pattern on posterior disc, a comparatively much shorter and broader tail, greater intensity of denticles on disc, more midtail spine rows at tail-base, and other features including size at maturity and meristic characters. Potamotrygon limai, sp. nov., is also distinguished from other species of Potamotrygon occurring in the Amazon region, except P. scobina, by presenting three angular cartilages (vs. two or one). This new species was discovered during a detailed taxonomic and morphological revision of the closely related species P. scobina, and highlights the necessity for thorough and all-embracing taxonomic studies, particularly in groups with pronounced endemism and morphological variability. (AU)

FAPESP's process: 12/02349-8 - Taxonomic review of the family Gymnuridae (Chondrichthyes: Myliobatoidei)
Grantee:Marcelo Rodrigues de Carvalho
Support Opportunities: Regular Research Grants
FAPESP's process: 02/06459-0 - Phylogenetic systematics, evolution and classification of living and fossil rays, with an analysis of historical biology of freshwater stingrays of the family Potamotrygonidae (Chondrichthyes: Batoidea)
Grantee:Marcelo Rodrigues de Carvalho
Support Opportunities: Research Grants - Young Investigators Grants
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 Opportunities: Regular Research Grants
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 Opportunities: 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 Opportunities: Scholarships in Brazil - Master