XANTHINE NEPHROLITHIASIS IN JUVENILE CAPTIVE GIANT OTTERS (PTERONURA BRASILIENSIS)

2020 ◽  
Vol 50 (4) ◽  
pp. 956
Author(s):  
Ashley Barratclough ◽  
Amanda J. Ardente ◽  
Brandon Boren ◽  
Donna Ialeggio ◽  
Michael M. Garner
Keyword(s):  
Pteronura Brasiliensis

scholarly journals Giant otter Pteronura brasiliensis density and abundance in Llanos Orientales de Colombia in the Orinoco basin

Oryx ◽  
2020 ◽  
pp. 1-4
Author(s):  
Germán Garrote ◽  
Beyker Castañeda ◽  
Jose Manuel Escobar ◽  
Laura Pérez ◽  
Brayan Marín ◽  
...  
Keyword(s):  
South America ◽  
Population Size ◽  
20Th Century ◽  
Conservation Status ◽  
Species Conservation ◽  
Iucn Red List ◽  
Red List ◽  
Recreational Fishing ◽  
Pteronura Brasiliensis ◽  
Direct Counts

Abstract The giant otter Pteronura brasiliensis, categorized as Endangered on the IUCN Red List, was once widely distributed throughout South America. By the middle of the 20th century the giant otter had become locally extinct along the main rivers of the Orinoco basin. Although some populations seem to have recovered, the paucity of information available does not permit a full evaluation of the species' conservation status. The objective of this study was to estimate the abundance and density of the giant otter population along the Orinoco river in the municipality of Puerto Carreño, Vichada, Colombia, where there is important commercial and recreational fishing. Thirty-nine linear km were surveyed, repeatedly, with a total of 315 km of surveys. Population size was estimated by direct counts of individuals. All individuals detected were photographed and identified individually from their throat pelage patterns. In total, 30 otters were identified, giving a minimum density of 0.77 individuals per km, one of the highest reported for the species in Colombia. Given the high density in this well-developed area, our results highlight the importance of this population for the conservation of the species.

scholarly journals Riqueza e composição de vertebrados em latrinas ativas e inativas de Pteronura brasiliensis (Carnivora, Mustelidae) na Amazônia Oriental, Brasil

2014 ◽  
Vol 104 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Cintia M. Togura ◽  
Darren Norris ◽  
Fernanda Michalski
Keyword(s):  
Panthera Onca ◽  
Leopardus Pardalis ◽  
Tapirus Terrestris ◽  
Pteronura Brasiliensis ◽  
Leptotila Verreauxi

O estudo objetivou avaliar a riqueza e composição de vertebrados de médio e grande porte em latrinas ativas e inativas de ariranhas [Pteronura brasiliensis (Gmelin, 1788)], em uma Unidade de Conservação de Uso Sustentável na Amazônia Oriental Brasileira. O estudo foi realizado em 45 latrinas ao longo de 230 km nos rios Falsino e Araguari (0°55'N, 51°35'W), sendo que desse total, 24 apresentaram fezes frescas e 21 fezes velhas de ariranhas. De julho a novembro de 2012, cada latrina foi monitorada com uma armadilha fotográfica programada para operar por 24 horas. O esforço de campo resultou em 458,8 armadilhas/dia, sendo 247,5 armadilhas/dia em latrinas com fezes frescas e 211,3 armadilhas/dia com fezes velhas. Foram obtidos registros de 22 espécies de vertebrados. A maior parte das espécies registradas foram mamíferos (n = 13), seguida por aves (n = 6), e répteis (n = 3). As espécies mais frequentemente fotografadas foram paca [Cuniculus paca (Linnaeus, 1766); n = 21], jaguatirica [Leopardus pardalis (Linnaeus, 1758); n =11], juriti-pupu (Leptotila verreauxi Bonaparte, 1855; n = 8), ariranha [Pteronura brasiliensis (Gmelin, 1788); n = 7], e anta [Tapirus terrestris (Linnaeus, 1758); n = 6], que foram responsáveis por 55,8% de todos os registros. A maior parte dos registros (69,5%) foram obtidos em latrinas com fezes frescas e o número de espécies foi maior (n = 19) do que os registrados em latrinas com fezes velhas (n = 15). No entanto, a dissimilaridade entre a comunidade de vertebrados entre latrinas com fezes frescas e velhas não diferiu. A média de visitação em latrinas com fezes frescas foi ligeiramente superior do que em latrinas com fezes velhas, embora essa diferença tenha sido apenas marginalmente significativa. Entretanto, houve uma diminuição no número de registros de felinos [Leopardus pardalis, Leopardus wiedii (Schinz, 1821) e Panthera onca (Linnaeus, 1758)], marginalmente significativo em latrinas com fezes frescas. Dessa forma, a presença de fezes frescas em latrinas ativas de ariranhas parecem aumentar o registro de espécies de vertebrados, sendo especialmente importante para os grupos que apresentam guilda trófica similar.

scholarly journals Cross-species characterisation of polymorphic microsatellite loci in the giant otter (Pteronura brasiliensis)

2009 ◽  
Vol 9 (1) ◽  
pp. 415-417 ◽  
Author(s):  
ROBERT S. A. PICKLES ◽  
JAMES J. GROOMBRIDGE ◽  
VERONICA D. ZAMBRANA ROJAS ◽  
WILLIAM C. JORDAN
Keyword(s):  
Microsatellite Loci ◽  
Polymorphic Microsatellite ◽  
Pteronura Brasiliensis

scholarly journals Territorial choruses of giant otter groups (Pteronura brasiliensis) encode information on group identity

PLoS ONE ◽  
2017 ◽  
Vol 12 (10) ◽  
pp. e0185733 ◽  
Author(s):  
Christina A. S. Mumm ◽  
Mirjam Knörnschild
Keyword(s):  
Group Identity ◽  
Pteronura Brasiliensis

First record of jaguar predation on giant otter (Pteronura brasiliensis)

2015 ◽  
Vol 65 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Claudiane dos Santos Ramalheira ◽  
Bruno F. Bozzetti ◽  
Andrews D. da Cruz ◽  
Ana Filipa Palmeirim ◽  
Márcia M.M. Cabral ◽  
...  
Keyword(s):  
Food Chain ◽  
Radio Telemetry ◽  
Brazilian Amazon ◽  
First Record ◽  
Tree Trunk ◽  
Panthera Onca ◽  
Hydroelectric Reservoir ◽  
Frequent Use ◽  
Pteronura Brasiliensis ◽  
First Time

Top of the food chain predators are often not predated upon. However, even though the giant otter (Pteronura brasiliensis) is in that category, the literature mentions many species as potential predators, including the jaguar (Panthera onca). Notwithstanding up until now there has been no registered confirmation of jaguar predation on giant otters. A predation of a jaguar on an adult female giant otter was recorded for the first time during our radio-telemetry study on giant otters in Balbina hydroelectric reservoir in Central Brazilian Amazon. The female had had a transmitter implanted on February 2012 and was killed by a jaguar ninety-four days after the surgery. This giant otter was a solitary specimen, which was captured by a jaguar while asleep in a shelter under a fallen tree trunk on the banks of one of the reservoir’s islands. The solitary pattern found in such individuals combined with the frequent use of shelters, allows predators to access them more easily and may have contributed to the predation observed in this study.

scholarly journals Conflicts between humans and giant otters (Pteronura brasiliensis) in Amanã Reserve, Brazilian Amazonia

2014 ◽  
Vol 17 (2) ◽  
pp. 127-142 ◽  
Author(s):  
Danielle dos Santos Lima ◽  
Miriam Marmontel ◽  
Enrico Bernard
Keyword(s):  
Human Impact ◽  
Disease Transmission ◽  
Domestic Animals ◽  
Field Surveys ◽  
Subsistence Fisheries ◽  
Brazilian Amazonia ◽  
River Otters ◽  
Annual Crops ◽  
Pteronura Brasiliensis ◽  
Commercial Hunting

Commercial hunting was determinant in the disappearance of giant river otters along areas of historical occurrence in the Brazilian Amazonia. After approximately 30 years of absence, giant otters were spotted in the Amanã Lake in 2000, after the creation of the Amanã Reserve. Four years of field surveys were carried out to confirm the presence of giant river otters in the area and to assess local threats to the species. Information on the human impact on this otter population was compiled based on 83 interviews with residents. Areas of overlap used by both otters and humans resulted in negative interactions. The identified threats included: perception of otters as competitors for subsistence fisheries; conversion of natural areas into annual crops; removal of cubs to be raised as pets; and potential disease transmission from domestic animals. Mitigation and monitoring of these threats are paramount for the maintenance of giant river otters in the area.

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