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Ana Maria Jansen - One of the best experts on this subject based on the ideXlab platform.
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modulating variables of trypanosoma cruzi and trypanosoma evansi transmission in free ranging coati Nasua Nasua from the brazilian pantanal region
Vector-borne and Zoonotic Diseases, 2011Co-Authors: Fernanda Moreira Alves, Paulo Marcelo Tenório Cotias, Natalie Olifiers, Matthew Edzart Gompper, Guilherme Mourão, Heitor Miraglia Herrera, Rita De Cassia Bianchi, Ana Claudia Machado Duarte, Paulo Sergio Dandrea, Ana Maria JansenAbstract:Abstract This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do ...
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Modulating variables of Trypanosoma cruzi and Trypanosoma evansi transmission in free-ranging Coati (Nasua Nasua) from the Brazilian Pantanal region.
Vector borne and zoonotic diseases (Larchmont N.Y.), 2011Co-Authors: Fernanda Moreira Alves, Ana Claudia Duarte, Paulo Marcelo Tenório Cotias, Paulo Sérgio D'andrea, Guilherme De Miranda Mourão, Rita De Cassia Bianchi, Natalie Olifiers, Matthew Edzart Gompper, Heitor Miraglia Herrera, Ana Maria JansenAbstract:This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do Sul, Brazil). We evaluated TC and TE infection by immunofluorescence assay, hemoculture (HC), and microhematocrit centrifuge techniques (MHCT). We also examined coatis health by quantifying hematological parameters including packed cell volume (PCV), white blood cell (WBC) count, and differential leukocyte count. TC isolates thought HC were typed by miniexon gene. Mixed infections by both parasites and the two main lineages of TC (76% TCI, 3% TCII, and 14% TCI/TCII) were observed. Trypanosoma rangeli was also isolated (7%). Overall, seroprevalence of TC and TE infection were 53.5% and 42.0%, respectively. Positive HC (indicating high TC parasitemia) occurred in 34% of seropositive coatis for TC, and positive MHCT (high TE parasitemia) were observed in 36.4% of seropositive coatis for TE. We detected higher prevalence of positive HC in females (72%) than males (43%), and also during the dry season, indicating a seasonal potential of this host species on TC transmission. These features did not occur for TE infection. However, prevalence of TE based on serology and MHCT was higher among adults than subadults. Coatis with positive HC or MHCT displayed a slight decrease in their WBC. In contrast to the animals with positive HC, coatis with positive MHCT displayed a decrease on their PCV. Moreover, concurrent high TC and TE parasitemia caused a larger decrease of PCV values. This study corroborates the importance of coatis in the maintenance of TC and TE transmission cycles in the southern Pantanal and shows a seasonal character of TC transmissibility to its vector by the coati population from the study area.
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The coati (Nasua Nasua, Carnivora, Procyonidae) as a reservoir host for the main lineages of Trypanosoma cruzi in the Pantanal region, Brazil
Transactions of the Royal Society of Tropical Medicine and Hygiene, 2008Co-Authors: Heitor Miraglia Herrera, Natalie Olifiers, Guilherme Mourão, Rita De Cassia Bianchi, Fabiana Lopes Rocha, Cristiane Varella Lisboa, Ana Paula Pinho, Ana Maria JansenAbstract:We have focused on the role played by a carnivore, the coati (Nasua Nasua), in the transmission cycle of Trypanosoma cruzi in the Brazilian Pantanal biome. We collected data during 2000/01 and 2005-07. Prevalence and pattern of T. cruzi infection were determined by serological tests and hemoculture. Isolates were characterized by miniexon molecular assay. Our results demonstrate that T. cruzi transmission cycle among coatis in the southern Pantanal seems to be well established, as we found high serum prevalences and high parasitemias throughout the two studied periods. Single infections by TCII (32.1%), TCI (28.0%) and Z3 (7.1%) were observed. Mixed infections by TCI/TCII (10.7%) and TCI/Z3 (3.6%) were also detected. Distinct genotypes of T. cruzi could be recovered during the 8 months follow-up of the same animals. As free-living coatis have high densities and inhabit all habitats, they may play an important role in the maintenance and dispersion of the main T. cruzi subpopulations. Considering that the Pantanal connects some of the major biomes of South America, it may be acting as a corridor for the spread of the main T. cruzi subpopulations. Our data give support that predator-prey links are important mechanisms for T. cruzi transmission and perpetuation in the wild.
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Measurements of Trypanosoma evansi from the Pantanal
Memorias do Instituto Oswaldo Cruz, 1997Co-Authors: L. Ramirez, Alberto M. R. Dávila, A. M. Victorio, R. A. M. S. Silva, V. Trajano, Ana Maria JansenAbstract:Laboratorio de Ecopatologia, Centro de PesquisaAgropecuaria do Pantanal, EMBRAPA, Rua 21 deSetembro 1880, 79320-900 Corumba, MS, Brasil*Laboratorio de Biologia de Tripanosomatideos,Departamento de Protozoologia, Instituto OswaldoCruz, Av. Brasil 4365, 21045-900 Rio de Janeiro, RJ,BrasilKey words: Trypanosoma evansi - measurements -Pantanal - dog - Nasua Nasua - horse - Brazil
Heitor Miraglia Herrera - One of the best experts on this subject based on the ideXlab platform.
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modulating variables of trypanosoma cruzi and trypanosoma evansi transmission in free ranging coati Nasua Nasua from the brazilian pantanal region
Vector-borne and Zoonotic Diseases, 2011Co-Authors: Fernanda Moreira Alves, Paulo Marcelo Tenório Cotias, Natalie Olifiers, Matthew Edzart Gompper, Guilherme Mourão, Heitor Miraglia Herrera, Rita De Cassia Bianchi, Ana Claudia Machado Duarte, Paulo Sergio Dandrea, Ana Maria JansenAbstract:Abstract This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do ...
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Modulating variables of Trypanosoma cruzi and Trypanosoma evansi transmission in free-ranging Coati (Nasua Nasua) from the Brazilian Pantanal region.
Vector borne and zoonotic diseases (Larchmont N.Y.), 2011Co-Authors: Fernanda Moreira Alves, Ana Claudia Duarte, Paulo Marcelo Tenório Cotias, Paulo Sérgio D'andrea, Guilherme De Miranda Mourão, Rita De Cassia Bianchi, Natalie Olifiers, Matthew Edzart Gompper, Heitor Miraglia Herrera, Ana Maria JansenAbstract:This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do Sul, Brazil). We evaluated TC and TE infection by immunofluorescence assay, hemoculture (HC), and microhematocrit centrifuge techniques (MHCT). We also examined coatis health by quantifying hematological parameters including packed cell volume (PCV), white blood cell (WBC) count, and differential leukocyte count. TC isolates thought HC were typed by miniexon gene. Mixed infections by both parasites and the two main lineages of TC (76% TCI, 3% TCII, and 14% TCI/TCII) were observed. Trypanosoma rangeli was also isolated (7%). Overall, seroprevalence of TC and TE infection were 53.5% and 42.0%, respectively. Positive HC (indicating high TC parasitemia) occurred in 34% of seropositive coatis for TC, and positive MHCT (high TE parasitemia) were observed in 36.4% of seropositive coatis for TE. We detected higher prevalence of positive HC in females (72%) than males (43%), and also during the dry season, indicating a seasonal potential of this host species on TC transmission. These features did not occur for TE infection. However, prevalence of TE based on serology and MHCT was higher among adults than subadults. Coatis with positive HC or MHCT displayed a slight decrease in their WBC. In contrast to the animals with positive HC, coatis with positive MHCT displayed a decrease on their PCV. Moreover, concurrent high TC and TE parasitemia caused a larger decrease of PCV values. This study corroborates the importance of coatis in the maintenance of TC and TE transmission cycles in the southern Pantanal and shows a seasonal character of TC transmissibility to its vector by the coati population from the study area.
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The coati (Nasua Nasua, Carnivora, Procyonidae) as a reservoir host for the main lineages of Trypanosoma cruzi in the Pantanal region, Brazil
Transactions of the Royal Society of Tropical Medicine and Hygiene, 2008Co-Authors: Heitor Miraglia Herrera, Natalie Olifiers, Guilherme Mourão, Rita De Cassia Bianchi, Fabiana Lopes Rocha, Cristiane Varella Lisboa, Ana Paula Pinho, Ana Maria JansenAbstract:We have focused on the role played by a carnivore, the coati (Nasua Nasua), in the transmission cycle of Trypanosoma cruzi in the Brazilian Pantanal biome. We collected data during 2000/01 and 2005-07. Prevalence and pattern of T. cruzi infection were determined by serological tests and hemoculture. Isolates were characterized by miniexon molecular assay. Our results demonstrate that T. cruzi transmission cycle among coatis in the southern Pantanal seems to be well established, as we found high serum prevalences and high parasitemias throughout the two studied periods. Single infections by TCII (32.1%), TCI (28.0%) and Z3 (7.1%) were observed. Mixed infections by TCI/TCII (10.7%) and TCI/Z3 (3.6%) were also detected. Distinct genotypes of T. cruzi could be recovered during the 8 months follow-up of the same animals. As free-living coatis have high densities and inhabit all habitats, they may play an important role in the maintenance and dispersion of the main T. cruzi subpopulations. Considering that the Pantanal connects some of the major biomes of South America, it may be acting as a corridor for the spread of the main T. cruzi subpopulations. Our data give support that predator-prey links are important mechanisms for T. cruzi transmission and perpetuation in the wild.
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Experimental Trypanosoma evansi infection in South American coati (Nasua Nasua): hematological, biochemical and histopathological changes.
Acta tropica, 2002Co-Authors: Heitor Miraglia Herrera, Antonio Carlos Alessi, Luiz Carlos Marques, A.e Santana, L.p.c.t Aquino, R.f Menezes, M.a.v Moraes, R. Z. MachadoAbstract:The course of an experimental Trypanosoma evansi infection in coatis (Nasua Nasua, carnivora, Procyonidae) was followed for 262 days. Hematological analysis of the infected coatis revealed a marked decline in hemoglobin, packed-cell volume, and total erythrocyte count. An intense anemia followed the first wave of parasitemia and persisted until the end of the experimental period. Biochemical analysis showed increased serum levels of alanine aminotransferase and aspartate aminotransferase and decreased albumin. The main histopathological features consisted of myocarditis with the presence of degenerate cardiac fibers and meningoencephalitis. This study has shown that coatis infected with T. evansi develop a chronic disease.
Fernanda Moreira Alves - One of the best experts on this subject based on the ideXlab platform.
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modulating variables of trypanosoma cruzi and trypanosoma evansi transmission in free ranging coati Nasua Nasua from the brazilian pantanal region
Vector-borne and Zoonotic Diseases, 2011Co-Authors: Fernanda Moreira Alves, Paulo Marcelo Tenório Cotias, Natalie Olifiers, Matthew Edzart Gompper, Guilherme Mourão, Heitor Miraglia Herrera, Rita De Cassia Bianchi, Ana Claudia Machado Duarte, Paulo Sergio Dandrea, Ana Maria JansenAbstract:Abstract This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do ...
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Modulating variables of Trypanosoma cruzi and Trypanosoma evansi transmission in free-ranging Coati (Nasua Nasua) from the Brazilian Pantanal region.
Vector borne and zoonotic diseases (Larchmont N.Y.), 2011Co-Authors: Fernanda Moreira Alves, Ana Claudia Duarte, Paulo Marcelo Tenório Cotias, Paulo Sérgio D'andrea, Guilherme De Miranda Mourão, Rita De Cassia Bianchi, Natalie Olifiers, Matthew Edzart Gompper, Heitor Miraglia Herrera, Ana Maria JansenAbstract:This is a long-term follow-up of infection by Trypanosoma cruzi (TC) and Trypanosoma evansi (TE) in the free-ranging coatis (Procyonidae: Nasua Nasua) from Pantanal region (Mato Grosso do Sul, Brazil). We evaluated TC and TE infection by immunofluorescence assay, hemoculture (HC), and microhematocrit centrifuge techniques (MHCT). We also examined coatis health by quantifying hematological parameters including packed cell volume (PCV), white blood cell (WBC) count, and differential leukocyte count. TC isolates thought HC were typed by miniexon gene. Mixed infections by both parasites and the two main lineages of TC (76% TCI, 3% TCII, and 14% TCI/TCII) were observed. Trypanosoma rangeli was also isolated (7%). Overall, seroprevalence of TC and TE infection were 53.5% and 42.0%, respectively. Positive HC (indicating high TC parasitemia) occurred in 34% of seropositive coatis for TC, and positive MHCT (high TE parasitemia) were observed in 36.4% of seropositive coatis for TE. We detected higher prevalence of positive HC in females (72%) than males (43%), and also during the dry season, indicating a seasonal potential of this host species on TC transmission. These features did not occur for TE infection. However, prevalence of TE based on serology and MHCT was higher among adults than subadults. Coatis with positive HC or MHCT displayed a slight decrease in their WBC. In contrast to the animals with positive HC, coatis with positive MHCT displayed a decrease on their PCV. Moreover, concurrent high TC and TE parasitemia caused a larger decrease of PCV values. This study corroborates the importance of coatis in the maintenance of TC and TE transmission cycles in the southern Pantanal and shows a seasonal character of TC transmissibility to its vector by the coati population from the study area.
Livia Perles - One of the best experts on this subject based on the ideXlab platform.
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outcomes of trypanosoma cruzi and trypanosoma evansi infections on health of southern coati Nasua Nasua crab eating fox cerdocyon thous and ocelot leopardus pardalis in the brazilian pantanal
PLOS ONE, 2018Co-Authors: Filipe Martins Santos, Guilherme Mourão, Gabriel Carvalho De Macedo, Wanessa Teixeira Gomes Barreto, Carolina Martins Garcia, Grasiela Edith De Oliveira Porfirio, Elizangela Domenis Marino, Marcos Rogério André, Luiz Gustavo R Oliveirasantos, Livia PerlesAbstract:: The occurrence of Trypanosoma spp. in wild carnivore populations has been intensively investigated during the last decades. However, the impact of these parasites on the health of free-living infected animals has been largely neglected. The Pantanal biome is the world's largest seasonal wetland, harboring a great diversity of species and habitats. This includes 174 species of mammals, of which 20 belong to the order Carnivora. The present study aimed to investigate the effect of Trypanosoma evansi and Trypanosoma cruzi infections and coinfections on the health of the most abundant carnivores in the Pantanal: coati (Nasua Nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis). We captured 39 coatis, 48 crab-eating foxes, and 19 ocelots. Diagnostic tests showed T. cruzi infection in 7 crab-eating foxes and 5 coatis. Additionally, 7 crab-eating foxes, 10 coatis, and 12 ocelots were positive for T. evansi. We observed coinfections in 9 crab-eating foxes, 8 coatis, and 2 ocelots. This is the first report of T. evansi and T. cruzi infection on the health of free-living ocelots and crab-eating foxes. We showed that single T. evansi or T. cruzi infection, as well as coinfection, caused some degree of anemia in all animals, as well as an indirect negative effect on body condition in coatis and crab-eating foxes via anemia indicators and immune investment, respectively. Furthermore, the vigorous immune investment observed in sampled coatis, crab-eating foxes and ocelots infected by T. evansi, T. cruzi and coinfected can be highly harmful to their health. Overall, our results indicate that single and combined infection with T. evansi and T. cruzi represent a severe risk to the health of wild carnivores in the Pantanal region.
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Hematological mean values of coatis (Nasua Nasua) infected with Trypanosoma evansi (TE), Trypanosoma cruzi (TC), and in coinfected (TE/TC) animals in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016.
2018Co-Authors: Filipe Martins Santos, Gabriel Carvalho De Macedo, Wanessa Teixeira Gomes Barreto, Carolina Martins Garcia, Grasiela Edith De Oliveira Porfirio, Elizangela Domenis Marino, Marcos Rogério André, Luiz Gustavo Rodrigues Oliveira-santos, Guilherme De Miranda Mourão, Livia PerlesAbstract:Hematological mean values of coatis (Nasua Nasua) infected with Trypanosoma evansi (TE), Trypanosoma cruzi (TC), and in coinfected (TE/TC) animals in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016.
Natalie Olifiers - One of the best experts on this subject based on the ideXlab platform.
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A New Species of Pachysentis Meyer, 1931 (Acanthocephala: Oligacanthorhynchidae) in the Brown-Nosed Coati Nasua Nasua (Carnivora: Procyonidae) from Brazil, with Notes on the Genus and a Key to Species.
Acta parasitologica, 2019Co-Authors: Ana Paula Nascimento Gomes, Natalie Olifiers, Rita De Cassia Bianchi, Omar M Amin, Joyce G R Souza, Helene Santos Barbosa, Arnaldo MaldonadoAbstract:Pachysentis comprises 10 species, which have been reported parasitizing mammals in Africa and the American continent. However, species of Pachysentis have not been described in brow-nosed coatis. Pachysentis lauroi n. sp. (Oligacanthorhynchidae: Acanthocephala) is described from the brown-nosed coati Nasua Nasua (Linnaeus, 1766) Storr, 1780 (Procyonidae: Carnivora) in the Brazilian Pantanal wetlands of the Mato Grosso do Sul State, Brazil. Specimens were studied using light and scanning electron microscopy. The new species is distinguished from other species of Pachysentis by the number of hooks in each longitudinal row (12 rows of 4 hooks, total of 48 hooks), presence of barbs on all hooks, and the organization of the cement glands. Notes on the genus Pachysentis [14] and a key to its species are provided. Critical comments on some species with a dubious diagnosis and questionable or missed key taxonomic characteristics are also reviewed. We also discuss the zoogeography of the members of the genus.
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a new species of pachysentis meyer 1931 acanthocephala oligacanthorhynchidae in the brown nosed coati Nasua Nasua carnivora procyonidae from brazil with notes on the genus and a key to species
Acta Parasitologica, 2019Co-Authors: Ana Paula Nascimento Gomes, Natalie Olifiers, Rita De Cassia Bianchi, Omar M Amin, Joyce G R Souza, Helene Santos Barbosa, Arnaldo MaldonadoAbstract:Introduction Pachysentis comprises 10 species, which have been reported parasitizing mammals in Africa and the American continent. However, species of Pachysentis have not been described in brow-nosed coatis. Pachysentis lauroi n. sp. (Oligacanthorhynchidae: Acanthocephala) is described from the brown-nosed coati Nasua Nasua (Linnaeus, 1766) Storr, 1780 (Procyonidae: Carnivora) in the Brazilian Pantanal wetlands of the Mato Grosso do Sul State, Brazil.
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Variation in the prevalence and abundance of acanthocephalans in brown-nosed coatis Nasua Nasua and crab-eating foxes Cerdocyon thous in the Brazilian Pantanal.
Brazilian journal of biology = Revista brasleira de biologia, 2018Co-Authors: Ana Paula Nascimento Gomes, Paulo Sérgio D'andrea, Matthew Edzart Gompper, Rita De Cassia Bianchi, Joyce G R Souza, A. Maldonado Júnior, Natalie OlifiersAbstract:Host infection by parasites is influenced by an array of factors, including host and environmental features. We investigated the relationship between host sex, body size and age, as well as seasonality on infection patterns by acanthocephalan in coatis (Procyonidae: Nasua Nasua) and in crab-eating foxes (Canidae: Cerdocyon thous ) from the Brazilian Pantanal wetlands. Between 2006 and 2009, we collected faecal samples from these hosts and analyzed for the presence of acanthocephalan eggs. Prevalence, abundance and intensity of eggs of acanthocephalans were calculated. Egg abundance was analyzed using generalized linear models (GLM) with a negative binomial distribution and models were compared by Akaike criteria to verify the effect of biotic and abiotic factors. Prevalence of acanthocephalans was higher in the wet season in both host species but did not differ between host sexes; however, adult crab-eating foxes showed higher prevalence of acanthocephalan eggs than juveniles. In contrast, prevalence of acanthocephalan eggs found in coatis was higher in coati juveniles than in adults. Host age, season and maximum temperature were the top predictors of abundance of acanthocephalan eggs in crab-eating foxes whereas season and host sex were predictors of egg abundance in coatis. The importance of seasonality for abundance of acanthocephalan was clear for both host species. The influence of host-related attributes, however, varied by host species, with host gender and host age being important factors associated with prevalence and parasite loads.
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Overlap of active period among carnivore species.
2016Co-Authors: Rita De Cassia Bianchi, Natalie Olifiers, Matthew Edzart Gompper, Guilherme MourãoAbstract:Gray = 95% overlap, black = 50% overlap. Lp = Leopardus pardalis (ocelot), Ct = Cerdocyon thous (crab-eating fox), Nn = Nasua Nasua (brown-nosed coati), Pc = Procyon cancrivorus (crab-eating raccoon).
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Serology for brucellosis in free-ranging crab-eating foxes (Cerdocyon thous) and brown-nosed coatis (Nasua Nasua) from Brazilian Pantanal
Ciência Rural, 2014Co-Authors: Elaine Maria Seles Dorneles, Natalie Olifiers, Guilherme Mourão, Rita De Cassia Bianchi, Aiesca Oliveira Pellegrin, Igor Alexandre Hany Fuzeta Schabib Péres, Luis Antonio Mathias, Fabiana Lopes Rocha, Andrey Pereira LageAbstract:Um inquerito sorologico em quatis (Procyonidae: Nasua Nasua) e lobinhos (Canidae: Cerdocyon thous) de vida livre foi conduzido na sub-regiao da Nhecolândia do Pantanal Sulmatogrossense para avaliar a presenca de anticorpos anti-Brucella (fenotipo liso). A pesquisa de anticorpos anti-Brucella foi realizada pelo teste do antigeno acidificado tamponado, utilizado como teste de triagem e pelo teste de polarizacao fluorescente, utilizado como teste confirmatorio. A frequencia de animais soropositivos para anticorpos anti-Brucella foi de 13,2% (5/38, IC 95%: 4,4% - 28,1%) para lobinhos e de 8,8% (3/34, IC 95%: 1,9% - 23,7%) para coatis. Nao foi encontrada associacao entre a soropositividade para brucelose e genero ou idade. Os resultados deste estudo sugerem exposicao a ou infeccao de lobinhos e quatis do Pantanal Brasileiro por Brucella spp
