Results 141 to 150 of about 996 (161)
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PRESUMPTIVE DYSGERMINOMA IN AN ORANGE-SPOT FRESHWATER STINGRAY (POTAMOTRYGON MOTORO)
Journal of Zoo and Wildlife Medicine, 2015A captive-born, 13-yr-old female orange-spot freshwater stingray, (Potamotrygon motoro), presented with an acute caudodorsal swelling. Ultrasonography revealed an intracoelomic mass of mixed echogenicity containing fluid pockets. The ray was euthanatized and gross postmortem examination confirmed the presence of a fluid-filled coelomic mass in the ...
Yousuf S, Jafarey +4 more
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Envenomation by Amazonian freshwater stingray Potamotrygon motoro: 2 cases reported in Europe
Toxicon, 2006Freshwater stingrays of the Potamotrygon genus are regarded by native people in the Amazonia as dangerous fishes responsible of frequent stings. Small freshwater stingrays are imported to Europe and sold as aquarium fish because they are easy to keep captive.
Ingrid Blanc, Brisset +3 more
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Potamotrygon motoro stingray venom induces both neurogenic and inflammatory pain behavior in rodents
Toxicon, 2018Freshwater stingray accidents cause an immediate, intense, and unrelieved pain which is followed by edema, erythema and necrosis formation. Treatment for stingray envenomation is based on administration of analgesic, antipyretic and anti-inflammatory drugs.
L F, Kimura +3 more
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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 ...
Ramos-Espinoza, F.C. +2 more
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Environmental Biology of Fishes, 1983
Observations of reproductive features and body measurements were made on wild-caught, freshwater stingrays, Potamotrygon circularis and P. motoro, from the Amazon drainage of western Brazil and southern Colombia. Further observations were made in Detroit's Belle Isle Aquarium on a captive pair of P.
Thomas B. Thorson +2 more
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Observations of reproductive features and body measurements were made on wild-caught, freshwater stingrays, Potamotrygon circularis and P. motoro, from the Amazon drainage of western Brazil and southern Colombia. Further observations were made in Detroit's Belle Isle Aquarium on a captive pair of P.
Thomas B. Thorson +2 more
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Behavioural Processes, 2015
Freshwater stingrays (Potamotrygon motoro) have been shown to use a variety of spatial learning strategies including directional, landmark and place learning. In the present study, the significance of landmarks and geometric cues was investigated in a hole-board task.
V, Schluessel +2 more
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Freshwater stingrays (Potamotrygon motoro) have been shown to use a variety of spatial learning strategies including directional, landmark and place learning. In the present study, the significance of landmarks and geometric cues was investigated in a hole-board task.
V, Schluessel +2 more
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ปลากระเบนน้ำจืดสายพันธุ์โมโตโร่ (Potamotrygon motoro) จัดเป็นปลาเศรษฐกิจสวยงามชนิดหนึ่งของประเทศไทย แต่ยังขาดข้อมูลพื้นฐานด้านการวิจัยโดยเฉพาะเรื่องเกี่ยวกับระบบสืบพันธุ์ การศึกษานี้จึงมีวัตถุประสงค์เพื่อพัฒนาวิธีการรีดเก็บน้ำเชื้อในปลากระเบน และศึกษาลักษณะรูปร่างทางกายภาพของตัวอสุจิปลากระเบนชนิดนี้ มีการประเมินคุณภาพน้ำเชื้อสด รวมไปถึงการหาสูตรท ...
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Aquaculture, 2018
Abstract 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, Guangdong province of South China. The bacterial isolates from the lesions of diseased P. motoro
Hong-Yan Sun +7 more
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Abstract 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, Guangdong province of South China. The bacterial isolates from the lesions of diseased P. motoro
Hong-Yan Sun +7 more
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Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2006
The interrenal gland (adrenocortical homolog) of elasmobranchs produces a unique steroid, 1alpha-hydroxycorticosterone (1alpha-B). The synthesis of this and most other steroids requires both cholesterol side chain cleavage (CYP11A) and 3beta-hydroxysteroid dehydrogenase (HSD3).
Scott Nunez, B. +4 more
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The interrenal gland (adrenocortical homolog) of elasmobranchs produces a unique steroid, 1alpha-hydroxycorticosterone (1alpha-B). The synthesis of this and most other steroids requires both cholesterol side chain cleavage (CYP11A) and 3beta-hydroxysteroid dehydrogenase (HSD3).
Scott Nunez, B. +4 more
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การศึกษาครั้งนี้มีจุดประสงค์ในการประเมินวงรอบการสืบพันธุ์และศึกษาผลของการใช้ฮอร์โมนโพรสตาแกลนดินเอฟทูแอลฟ่าสังเคราะห์ต่อระดับฮอร์โมนเพศและลักษณะทางกายภาพของอวัยวะในระบบสืบพันธุ์ โดยการเจาะเลือดเพื่อวิเคราะห์ระดับฮอร์โมนเพศร่วมกับการศึกษาลักษณะทางกายภาพของอวัยวะในระบบสืบพันธุ์จากการสังเกต วัด และการอัลตราซาวด์ในปลากระเบนเพศผู้และเพศเมียเป็นเวลา 17 ส ...
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