Results 151 to 160 of about 1,538 (201)
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Aquaculture, 2018
An outbreak of a novel disease characterized by serious hemorrhage in the abdomen, ascites and bleaching of the liver was recorded in the freshwater cultured stingray Potamotrygon motoro, which is a cartilaginous fish related to sharks, in Panyu ...
Hong-yan Sun +7 more
semanticscholar +2 more sources
An outbreak of a novel disease characterized by serious hemorrhage in the abdomen, ascites and bleaching of the liver was recorded in the freshwater cultured stingray Potamotrygon motoro, which is a cartilaginous fish related to sharks, in Panyu ...
Hong-yan Sun +7 more
semanticscholar +2 more sources
UMA ÁREA DE VIDA RESTRITA AUMENTA A VULNERABILIDADE DA RAIA-DE-FOGO, Potamotrygon motoro , A PESCA EM UM HOTSPOT DE BIODIVERSIDADE DA REGIÃO NEOTROPICAL [PDF]
, 2021 In this study a telemetry-based approach was used to examine the movements and the habitat utilization of Potamotrygon motoro, a widespread species of potamotrygonid stingray of South America.
D. Garrone-Neto +5 more
semanticscholar +3 more sources
Serial reversal learning in freshwater stingrays (Potamotrygon motoro)
Animal Cognition, 2019Serial reversal learning is considered a reliable approach for the testing of behavioral flexibility, and animals that inhabit fluctuating habitats and different environments are expected to possess behavioral and cognitive flexibility. The ocellate river stingray (Potamotrygon motoro) is one such species.
Martha M. M. Daniel, V. Schluessel
semanticscholar +3 more sources
Complete mitochondrial genome of the ocellate river stingray (Potamotrygon motoro)
Mitochondrial DNA, 2015We determined the first complete mitochondrial genome sequence of Potamotrygon motoro from South American freshwater stingrays. The total length of P. motoro mitogenome is 17,448 bp, which consists of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and a control region, with the genome organization and gene order being identical to that of the ...
Hongmei Song +5 more
semanticscholar +4 more sources
Electroreception in the obligate freshwater stingray, Potamotrygon motoro [PDF]
Marine and Freshwater Research, 2015 Elasmobranch fishes use electroreception to detect electric fields in the environment, particularly minute bioelectric fields of potential prey. A single family of obligate freshwater stingrays, Potamotrygonidae, endemic to the Amazon River, demonstrates morphological adaptations of their electrosensory system due to characteristics of a high impedance
Lindsay L. Harris, C. Bedore, S. Kajiura
semanticscholar +2 more sources
QUALIDADE DE FILÉS DE ARRAIA (Potamotrygon motoro) SUBMETIDOS AO PROCESSO DE DEFUMAÇÃO LÍQUIDA.
Anais do XXXIII Congresso de Iniciação CientíficaAbel Antunes Pinheiro da Cunha Trindade +2 more
semanticscholar +2 more sources
Characterization of inflammatory response induced by Potamotrygon motoro stingray venom in mice
Experimental Biology and Medicine, 2014 Freshwater stingray accidents cause intense pain followed by edema, erythema, and necrosis formation. Treatment for stingray envenomation is based on administration of analgesic, antipyretic, and anti-inflammatory drugs. This report evaluated the local inflammatory reaction—including edema formation, leukocyte recruitment, release of inflammatory ...
Louise F Kimura +5 more
semanticscholar +3 more sources
Histopathological study in wild freshwater stingrays Potamotrygon motoro in the Peruvian Amazon
Comparative Clinical Pathology, 2017The genus Potamotrygon comprises stingrays endemic to South American rivers. Potamotrygon motoro is a popular Amazonian species in ornamental fish trade. Histopathological studies of these species allow knowing the health status of these specimens. The objective of the present study was to investigate the occurrence of histopathological alterations in ...
F. C. Ramos‐Espinoza +2 more
semanticscholar +2 more sources
Toxicon, 2008
Freshwater stingrays (Potamotrygon motoro) are known to cause human accidents through a sting located in its tail. In the State of Goiás, this accident happens especially during the fishing season of the Araguaia River. The P. motoro venom extracted from the sting presented hyaluronidase activity.
M. Magalhães, N. J. da Silva, C. Ulhoa
semanticscholar +3 more sources
Freshwater stingrays (Potamotrygon motoro) are known to cause human accidents through a sting located in its tail. In the State of Goiás, this accident happens especially during the fishing season of the Araguaia River. The P. motoro venom extracted from the sting presented hyaluronidase activity.
M. Magalhães, N. J. da Silva, C. Ulhoa
semanticscholar +3 more sources
Spatial memory and orientation strategies in the elasmobranch Potamotrygon motoro
Journal of Comparative Physiology A, 2005We investigated whether juvenile freshwater stingrays (Potamotrygon motoro) can solve spatial tasks by constructing a cognitive map of their environment. Two experimental conditions were run: allocentric and ego-allocentric. Rays were trained to locate food within a four-arm maze placed in a room with visual spatial cues.
V. Schluessel, H. Bleckmann
semanticscholar +4 more sources