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de Andrade-Silva BE, Cardoso TDS, Vilela RDV, Pacheco RDC, Rossi RV, Mendonça RFBD, Maldonado Júnior A, Gentile R. Helminth community structure of the white-bellied woolly mouse opossum Marmosa constantiae Thomas, 1904 in Central-West Brazil. J Helminthol 2023; 97:e58. [PMID: 37476963 DOI: 10.1017/s0022149x2300038x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Marmosa constantiae is a species of marsupial restricted to the central portion of South America. In Brazil, it occurs in the northwestern region including five states of the Amazon, Cerrado, and Pantanal biomes. However, there is no study of the helminth fauna or helminth community structure for this marsupial. The aims of this study were to describe the species composition and to analyse the structure of the helminthic community of M. constantiae in an area of the Amazon Arc in Sinop, north of the state of Mato Grosso, Brazil. Parasites were searched in 53 specimens of this marsupial, among which 44 were infected with at least one helminth species. Parasitic helminths were counted and identified. Nine species were collected: seven nematodes, one cestode, and one acanthocephalan. The most abundant species were Gracilioxyuris agilisis, Travassostrongylus scheibelorum, Pterygodermatites sinopiensis, and Subulura eliseae. These species were the only dominant ones in the component community. No significant differences were observed in the abundance and prevalence of helminths between male and female hosts. Host body size significantly influenced helminth abundance in males. The pattern of community structure considering the infracommunities in this locality indicated more species replacement than species loss along the environmental gradient. This is the first study to report the helminth fauna and the helminth community structure of M. constantiae.
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Affiliation(s)
- B E de Andrade-Silva
- Programa de Pós-graduação em Biologia Parasitária, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brazil
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - T Dos Santos Cardoso
- Programa de Pós-graduação em Biologia Parasitária, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brazil
- Pós-Doutorado Nota 10 - 2021, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - R do Val Vilela
- Programa de Pós-graduação em Biologia Parasitária, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brazil
| | - R de Campos Pacheco
- Laboratório de Parasitologia Veterinária e Doenças Parasitárias dos Animais Domésticos e Silvestres, Hospital Veterinário - HOVET, Faculdade de Medicina Veterinária - FAVET, Universidade Federal de Mato Grosso - UFMT, Cuiabá, Mato Grosso, Brazil
| | - R V Rossi
- Laboratório de Mastozoologia, Instituto de Biociências - IB, Universidade Federal de Mato Grosso - UFMT, Cuiabá, Mato Grosso, Brazil
| | - R F B de Mendonça
- Laboratório de Mastozoologia, Instituto de Biociências - IB, Universidade Federal de Mato Grosso - UFMT, Cuiabá, Mato Grosso, Brazil
| | - A Maldonado Júnior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - R Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
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Wolf RW, Rossi RV, Aragona M, Aguiar DM. First record of Pseudoryzomys simplex (Cricetidae, Sigmodontinae) in a flooded area of the Pantanal, Brazil. BRAZ J BIOL 2016; 76:1054-1057. [PMID: 27166568 DOI: 10.1590/1519-6984.09015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 08/05/2015] [Indexed: 11/22/2022] Open
Abstract
Pseudoryzomys simplex is a small to medium sized terrestrial rodent confined to lowland open areas with strong seasonal rainfall throughout the Chaco, Cerrado and Caatinga. Despite its extensive range, the species is difficult to trap. In this report we provide the first record of P. simplex in the Pantanal, where three specimens were collected in a pasture of exotic grass. The specimens are morpometrically similar to the population from Paraguay (Chaco). In this sense, our report shows how interesting a taxonomic review of the species would be to better understand the real significance of the geographic variation herein observed.
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Affiliation(s)
- R W Wolf
- Laboratório de Virologia e Rickettsioses, Faculdade de Medicina Veterinária, Universidade Federal do Mato Grosso - UFMT, Avenida Fernando Correa da Costa, 2367, CEP 78060-900, Cuiabá, MT, Brazil.,Instituto Nacional de Ciência e Tecnologia em Áreas Úmidas - INAU, Rua Dois, 497, Boa Esperança, CEP 78068-360, Cuiabá, MT, Brazil
| | - R V Rossi
- Instituto de Biociências - IB, Universidade Federal de Mato Grosso - UFMT, Avenida Fernando Correa da Costa, 2367, CEP 78060-900, Cuiabá, MT, Brazil
| | - M Aragona
- Instituto Nacional de Ciência e Tecnologia em Áreas Úmidas - INAU, Rua Dois, 497, Boa Esperança, CEP 78068-360, Cuiabá, MT, Brazil.,Instituto de Engenharia, Universidade Federal de Mato Grosso - UFMT, Campus de Várzea Grande, Avenida Fernando Correa da Costa, 2367, CEP 78060-900, Cuiabá, MT, Brazil
| | - D M Aguiar
- Laboratório de Virologia e Rickettsioses, Faculdade de Medicina Veterinária, Universidade Federal do Mato Grosso - UFMT, Avenida Fernando Correa da Costa, 2367, CEP 78060-900, Cuiabá, MT, Brazil.,Instituto Nacional de Ciência e Tecnologia em Áreas Úmidas - INAU, Rua Dois, 497, Boa Esperança, CEP 78068-360, Cuiabá, MT, Brazil
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Rosa CC, Flores T, Pieczarka JC, Rossi RV, Sampaio MIC, Rissino JD, Amaral PJS, Nagamachi CY. Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species. J Genet 2013; 91:265-77. [PMID: 23271012 DOI: 10.1007/s12041-012-0182-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rodent genus Oecomys (Sigmodontinae) comprises ~16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém (2n = 68, fundamental number (FN) = 72 and 2n = 70, FN = 76) and a third from Marajó island (2n = 70, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species.
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Affiliation(s)
- C C Rosa
- Laboratório de Citogenética, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém 66.075-900, Brazil
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