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Common opossum population density in an agroforestry system in Bolivia Acta Amazonica
BENAVIDES,Camila; ARCE,Alejandro; PACHECO,Luis F..
ABSTRACT The common opossum, Didelphis marsupialis thrives near human settlements. Understanding its ecology could help planning management decisions about this species, especially in anthropogenic landscapes. Yet, there are no density estimations for this species throughout its distribution range in Bolivia. We estimated the density of D. marsupialis in a rural agricultural community, where agroforestry plantations and fallows cover most of the land. We counted individuals in line transects and used DISTANCE software to calculate density. We covered a total of 70.21 km in 143 night counts, obtaining 38 records of D. marsupialis. We estimated a density of 0.30 individuals ha-1 (SE = 0.062; range: 0.20 - 0.45 individuals ha-1), with a mean encounter rate of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphis marsupialis; Tropical agroecosystems; Line transect; DISTANCE sampling.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000300246
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Inmunodiagnóstico en Didelphis marsupialis usando un antígeno de Paragonimus de Venezuela ABCL
Gómez Martínez,Erika; Díaz-Bello,Zoraida; Zavala-Jaspe,Reinaldo; Tulio Díaz,Marcos; Noya,Oscar; Alarcón de Noya,Belkisyole.
Los Paragonimus son trematodos que habitualmente viven en los pulmones de mamíferos carnívoros y omnívoros, entre ellos el hombre. En el oriente venezolano se encuentra el único foco de Paragonimus sp. donde Didelphis marsupialis es el único reservorio demostrado hasta ahora. Con el fin de tener herramientas de inmunodiagnóstico que detecten la presencia de Paragonimus sp. en esta especie, se elaboraron varios reactivos para realizar un ensayo inmunoenzimático ELISA. Entre ellos se obtuvo un antígeno crudo soluble de vermes adultos de Paragonimus y una inmunoglobulina de gallina anti-IgG de Didelphis marsupialis. Los mismos se capturaron en la localidad de Aguas Blancas, municipio Montes, estado Sucre, Venezuela, y se obtuvieron muestras sanguíneas; en el...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Paragonimus sp.; Didelphis marsupialis; Inmunodiagnóstico.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572010000400009
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Erythrocyte glucose-6-phosphate dehydrogenase from Brazilian opossum Didelphis marsupialis BJMBR
Barretto,O.C. de O.; Oshiro,M.; Oliveira,R.A.G.; Fedullo,J.D.L.; Nonoyama,K..
In a comparative study of erythrocyte metabolism of vertebrates, the specific activity of glucose-6-phosphate dehydrogenase (G6PD) of the Brazilian opossum Didelphis marsupialis in a hemolysate was shown to be high, 207 ± 38 IU g-1 Hb-1 min-1 at 37ºC, compared to the human erythrocyte activity of 12 ± 2 IU g-1 Hb-1 min-1 at 37ºC. The apparent high specific activity of the mixture led us to investigate the physicochemical properties of the opossum enzyme. We report that reduced glutathione (GSH) in the erythrocytes was only 50% higher than in human erythrocytes, a value lower than expected from the high G6PD activity since GSH is maintained in a reduced state by G6PD activity. The molecular mass, determined by G-200 Sephadex column chromatography at pH 8.0,...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Erythrocyte glucose-6-phosphate dehydrogenase; Didelphis marsupialis; Erythrocyte glutathione.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000500007
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