Results 71 to 80 of about 1,538 (201)

Isolation of a zoonotic pathogen Aeromonas hydrophila from freshwater stingray (Potamotrygon motoro) kept in a Korean aquarium with ricefish (Oryzias latipes)

open access: yes, 2017
In the present study, Aeromonas (A.) hydrophila was isolated from a captive-bred adult freshwater stingray (Potamotrygon motoro) reared at a commercial aquarium in Korea.
Saekil Yun   +8 more
semanticscholar   +1 more source

Identification of Species Composition in the Hong Kong Shark Fin Trade using Genetic Techniques and Trader Records [PDF]

open access: yes, 2001
Trade in shark fins represents one of the most serious threats to shark populations worldwide. Previous studies have indicated that certain types of fins are more valued than others, but due to the largely unregulated and often covert nature of the trade,
Clarke, Shelley C.   +2 more
core   +1 more source

COMPARISON OF THE EFFECTS OF ANTICOAGULANTS USED IN BLOOD COLLECTION TO DETERMINE BLOOD PARAMETERS OF FREE-LIVING STINGRAYS FROM THE Potamotrygon GENUS (ELASMOBRANCHII: POTAMOTRYGONIDAE) [PDF]

open access: yes, 2015
Este estudo avaliou a eficácia de três anticoagulantes em parâmetros sanguíneos de arraias cururu Potamotrygon sp. O sangue de dez animais foi coletado e diluído nos anticoagulantes: EDTA 5% e 10%, heparina 2.500 e 5.000 UI e citrato de sódio 3,2%, outra
Lemos, Jefferson Raphael Gonzaga   +6 more
core   +4 more sources

A test of the utility of DNA barcoding in the radiation of the freshwater stingray genus Potamotrygon (Potamotrygonidae, Myliobatiformes)

open access: yesGenetics and Molecular Biology, 2008
DNA barcoding is a recently proposed global standard in taxonomy based on DNA sequences. The two main goals of DNA barcoding methodology are assignment of specimens to a species and discovery of new species.
Daniel Toffoli   +5 more
doaj   +1 more source

Os bagres como presas de raias Potamotrygonidae nos Rios Solimões e Negro, Amazônia Brasileira [PDF]

open access: yes, 2013
In spite of the fact that catfish have rarely been reported as food items in the diets of freshwater stingrays, they are commonly observed in the stomach contents of species inhabiting the Solimões and Negro rivers in the Brazilian Amazon.
Shibuya, Akemi, Zuanon, Jansen
core   +2 more sources

Stirring, charging, and picking: hunting tactics of potamotrygonid rays in the upper Paraná River

open access: yesNeotropical Ichthyology
Hunting tactics of potamotrygonid freshwater rays remain unreported under natural conditions. Three main foraging tactics of Potamotrygon falkneri and P. motoro are described here based on underwater observations in the upper Paraná River.
Domingos Garrone-Neto, Ivan Sazima
doaj   +1 more source

Activity and habitat use of two species of stingrays (Myliobatiformes: Potamotrygonidae) in the upper Paraná River basin, Southeastern Brazil

open access: yesNeotropical Ichthyology
The life history of freshwater stingrays (Potamotrygonidae) under natural conditions has been poorly documented. In this study, we investigated theperiod of activity and the habitat use of two species of the genus Potamotrygon in the upper Paraná River ...
Domingos Garrone Neto   +1 more
doaj   +1 more source

Resource partioning between sympatric congeners - a case study of river rays (Potamotrygon spp.) in the Amazon estuary [PDF]

open access: yes, 2020
The syntopic occurrence of different species of freshwater stingray on a small fluvial island at the mouth of the Amazon River led to the investigation of the factors that underpin this coexistence.
Gama, Cecile de Souza   +1 more
core   +2 more sources

Phylogeography and conservation genetics of the Amazonian freshwater stingray Paratrygon aiereba Müller & Henle, 1841 (Chondrichthyes: Potamotrygonidae)

open access: yesNeotropical Ichthyology
The family Potamotrygonidae is monophyletic comprising three genera: Paratrygon Duméril, Potamotrygon Garman and Plesiotrygon Rosa, Castello & Thorson.
Renata G. Frederico   +4 more
doaj   +1 more source

Freshwater stingray injuries in Belém, Pará State, Brazil/ Lesiones por rayas de agua dulce en Belém, Estado de Pará, Brasil/ Lesões por arraias de água doce em Belém, Estado do Pará, Brasil [PDF]

open access: yes, 2020
Objective: to describe clinical and epidemiological aspects of freshwater stingray injuries in the city of Belém, Pará, brazilian amazon. Method: descriptive, epidemiological and observational study, carried out between 1999 and 2008, using medical ...
Barbaro, Katia Cristina   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy