Results 21 to 30 of about 414 (162)

Complete mitochondrial genome of the river stingray Potamotrygon orbignyi (Myliobatiformes: Potamotrygonidae) [PDF]

Mitochondrial DNA. Part B. Resources, 2019
The river stingray Potamotrygon orbignyi is a carnivorous bottom feeder that is widespread in the Amazonian region. We here assemble the 17,449 bp complete mitochondrial genome of the species, showing a typical gene arrangement as for related ...
David Ory, Yves Cuenot, Régis Vigouroux, Raphaël Covain, Sébastien Brosse, Jérôme Murienne   +5 more
doaj   +2 more sources

[PROVISIONAL] Chromosomal characterization of Amazonian freshwater stingrays with evidence for new karyomorphs and XX/XY sex chromosomes [PDF]

Genetics and Molecular Biology, 2019
Cytogenetic studies in the subfamily Potamotrygoninae has already provided valuable insights into the understanding of the evolution and diversification of its species.
Francisco Carlos de Souza Valentim, Jorge Ivan Rebelo Porto, Eliana Feldberg   +2 more
doaj   +2 more sources

Potamotrygon motoro

, 2013
Potamotrygon motoro (Müller & Henle, 1841) Figs. 1-20, 21 b-c, 22 Synonymy of Potamotrygon motoro in the Paraná-Paraguay basin: Taeniura motoro: - Müller & Henle, 1841: 197-198 [original description, type locality: Cuiabá River, Brazil (“Fluss Cuyaba in Brasilien ”, p. 197)]; - Günther, 1870: 484 [brief description, synonymy].
Loboda, Thiago Silva, Carvalho, Marcelo Rodrigues de   +1 more
openaire   +4 more sources

Physiological parameters of freshwater stingrays from the Uatumã River Basin, Amazon, Brazil [PDF]

Anais da Academia Brasileira de Ciências
Knowledge of freshwater stingrays’ physiological parameters is essential for conserving elasmobranch diversity. This study aims to characterize the erythrogram and plasma biochemistry of freshwater stingrays from the Uatumã River basin for the first time.
MARIA FERNANDA S. GOMES, MAIKO WILLAS S. RIBEIRO, CRISTIANE C. GUIMARÃES, TIAGO C. NÓBREGA, THAYSON L. PINTO, RAYANA M. PAIXÃO, ADRIENE NÚZIA A. SANTOS, PAULO HENRIQUE R. ARIDE, ADRIANO T. DE OLIVEIRA   +8 more
doaj   +1 more source

Potamotrygon scobina

, 2017
Identification key for species of the Potamotrygon scobina complex 1a. Dorsal disc color with a reticulate, polygonal pattern, lacking ocelli; whitish blotches, when present, very small; tail with dorsal polygonal color pattern at base; dorsal tail thorns at base composed of 2 or 3 irregular rows................. P. limai. 1b.
João Pedro Fontenelle, Marcelo R. De Carvalho   +1 more
openaire   +4 more sources

Potamotrygon jabuti Carvalho 2016

, 2023
Published as part of Lima, Arthur De, Loboda, Thiago Silva, Gianeti, Michel Donato, Silva, João Paulo Capretz Batista Da & Pinna, Mario De, 2023, Type specimens of Elasmobranchii in the Museu de Zoologia da Universidade de São Paulo (MZUSP), pp. 301-332 in Zootaxa 5296 (3) on pages 315-316, DOI: 10.11646/zootaxa.5296.3.1, http://zenodo.org/record ...
Lima, Arthur De, Loboda, Thiago Silva, Gianeti, Michel Donato, Silva, João Paulo Capretz Batista Da, Pinna, Mario De   +4 more
openaire   +2 more sources

Morphology and morphometry of blood cells of two species of freshwater stingrays (Chondrichthyes: Potamotrygoninae) from the lower Solimões river, Amazon [PDF]

Anais da Academia Brasileira de Ciências
Cytomorphological evaluation of peripheral blood provides information about the health status of animals, in addition to being indicators of environmental contamination.
MARCIO QUARA DE C. SANTOS, FLÁVIA DAYANE F. FARIAS, PAULO HENRIQUE R. ARIDE, ADRIANO T. OLIVEIRA   +3 more
doaj   +1 more source

Ocorrência de hemoglobinas de efeito Root em peixes amazônicos [PDF]

Acta Amazonica, 1978
Resumo O efeito Root foi medido em hemolisados de representantes de 56 gêneros de peixes amazônicos. Hemolisados de várias espécies de peixes de respiração aérea apresentaram efeito Root, contrariamente às hipóteses publicadas.
Martha Farmer, Hans Jorgen Fyhn, Unni E. H. Fyhn, Robert W. Noble   +3 more
doaj   +1 more source

Potamotrygon albimaculata Carvalho 2016

, 2023
Potamotrygon albimaculata Carvalho, 2016 Holotype: MZUSP 105016; adult female, 497 mm DW (approximately the same DW as cited in Carvalho, 2016a); (Fig. 9); Pousada Santa Rosa, left bank of Rio Teles Pires —tributary of Rio Tapajós, Mato Grosso state, Brazil; 8º46’45’’S, 57º27’55’’W; depth not listed; M. R. de Carvalho et al.; 06 Dec 2005.
Lima, Arthur De, Loboda, Thiago Silva, Gianeti, Michel Donato, Silva, João Paulo Capretz Batista Da, Pinna, Mario De   +4 more
openaire   +2 more sources

Proposal of a non-lethal visual census method to estimate freshwater stingray abundance

Universitas Scientiarum, 2016
There is not a current method to estimate South American freshwater stingray’s abundance. Therefore we designed a census method and tested it in the field.
Mónica Andrea Morales-Betancourt, Carlos Andrés Lasso-Alcalá   +1 more
doaj   +1 more source