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Corriale MJ, Pedelacq ME, Guichón ML, Bilenca DN. Influence of land use and artificial water bodies on the habitat use of Myocastor coypus and Hydrochoerus hydrochaeris in the Argentine Pampas. Mamm Biol 2020. [DOI: 10.1007/s42991-020-00082-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tarquino-Carbonell AP, Ojeda RA, Ojeda AA. Influence of climate change on the predicted distributions of the genus Tympanoctomys (Rodentia, Hystricomorpha, Octodontidae), and their conservation implications. J Mammal 2020. [DOI: 10.1093/jmammal/gyaa087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Viscacha rats (genus Tympanoctomys Yepes, 1942) are ecologically, physiologically, and behaviorally unusual octodontid rodents endemic to the Monte and Patagonian desert biomes of Argentina. The geographic ranges of the different species of Tympanoctomys have been described in general terms but have not been associated with spatial and climate data. Within species, populations are patchily distributed and genetically distinct. We investigated the predicted distribution of Tympanoctomys and the influence of climate fluctuations on their geographic range in historical, current, and future, scenarios. Our objectives were to characterize the environmental niche of the genus, propose a paleoclimatic context for the oldest fossils, characterize the environmental niches for T. barrerae and T. kirchnerorum, and forecast potential future distributions for these taxa. Ecological niche models were constructed using occurrence records from 1941 to the present wherein we identified several precipitation and temperature variables as important predictors of the geographic distributions of the genus, and the species T. barrerae and T. kirchnerorum. Based on our models’ results, we hypothesize that the distribution of Tympanoctomys has contracted from historical to modern times. At the species level, T. kirchnerorum likely experienced the most dramatic change, suffering a large contraction of its historical distribution resulting in its limited present distribution. Given these findings, projected future climate fluctuations and global warming are expected to affect the distributions and persistence of these species.
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Affiliation(s)
- A P Tarquino-Carbonell
- Grupo de Investigaciones de la Biodiversidad, Instituto Argentino de Investigaciones de las Zonas Áridas, CONICET, Centro de Ciencia y Técnica Mendoza, Avenida Ruiz Leal s/n Parque General San Martín, CC 507, CP 5500 Mendoza, Argentina
| | - Ricardo A Ojeda
- Grupo de Investigaciones de la Biodiversidad, Instituto Argentino de Investigaciones de las Zonas Áridas, CONICET, Centro de Ciencia y Técnica Mendoza, Avenida Ruiz Leal s/n Parque General San Martín, CC 507, CP 5500 Mendoza, Argentina
| | - Agustina A Ojeda
- Grupo de Investigaciones de la Biodiversidad, Instituto Argentino de Investigaciones de las Zonas Áridas, CONICET, Centro de Ciencia y Técnica Mendoza, Avenida Ruiz Leal s/n Parque General San Martín, CC 507, CP 5500 Mendoza, Argentina
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Mapping Brazilian spotted fever: Linking etiological agent, vectors, and hosts. Acta Trop 2020; 207:105496. [PMID: 32315604 DOI: 10.1016/j.actatropica.2020.105496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/11/2020] [Accepted: 04/11/2020] [Indexed: 01/21/2023]
Abstract
Brazilian spotted fever (BSF) is a highly lethal disease in southeastern Brazil. BSF is caused by the bacterium Rickettsia rickettsii and is transmitted by the bites of the tick of the genus Amblyomma. The spatial distribution of BSF risk areas is not well known in the country given the complexity of the transmission cycle. This study used the ecological niche modeling (ENM) approach to anticipate the potential distribution of the etiological agent (Rickettsia rickettsii), vectors (Amblyomma sculptum and A. dubitatum), and hosts (Hydrochoerus hydrochaeris, Didelphis aurita, and D. marsupialis) of BSF in Brazil. We compiled occurrence records for all vectors, hosts, and BSF from our own field surveillance, online repositories, and literature. ENM identified BSF risk areas in southeastern and southern Brazil, and anticipated other dispersed suitable areas in the western, central, and northeastern coast regions of Brazil. Tick vectors and mammalian hosts were confined to these same areas; however, host species showed broader suitability in northern Brazil. All species ENMs performed significantly better than random expectations. We also tested the BSF prediction based on 253 additional independent cases identified in our surveillance; the model anticipated 251 out of 253 of these independent cases. Background similarity tests comparing the ENMs of R. rickettsii, tick vectors, and mammalian hosts were unable to reject null hypotheses of niche similarity. Finally, we observed close coincidence between independent BSF cases, and areas suitable for combinations of vectors and hosts, reflecting the ability of these model pairs to anticipate the distribution of BSF cases across Brazil.
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Fontenele RS, Lacorte C, Lamas NS, Schmidlin K, Varsani A, Ribeiro SG. Single Stranded DNA Viruses Associated with Capybara Faeces Sampled in Brazil. Viruses 2019; 11:E710. [PMID: 31382446 PMCID: PMC6723397 DOI: 10.3390/v11080710] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/29/2019] [Accepted: 07/31/2019] [Indexed: 12/27/2022] Open
Abstract
Capybaras (Hydrochoerus hydrochaeris), the world's largest rodents, are distributed throughout South America. These wild herbivores are commonly found near water bodies and are well adapted to rural and urban areas. There is limited information on the viruses circulating through capybaras. This study aimed to expand the knowledge on the viral diversity associated with capybaras by sampling their faeces. Using a viral metagenomics approach, we identified diverse single-stranded DNA viruses in the capybara faeces sampled in the Distrito Federal, Brazil. A total of 148 complete genomes of viruses in the Microviridae family were identified. In addition, 14 genomoviruses (family Genomoviridae), a novel cyclovirus (family Circoviridae), and a smacovirus (family Smacoviridae) were identified. Also, 37 diverse viruses that cannot be assigned to known families and more broadly referred to as unclassified circular replication associated protein encoding single-stranded (CRESS) DNA viruses were identified. This study provides a snapshot of the viral diversity associated with capybaras that may be infectious to these animals or associated with their microbiota or diet.
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Affiliation(s)
- Rafaela S Fontenele
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF 70770-017, Brazil
| | - Cristiano Lacorte
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF 70770-017, Brazil
| | - Natalia S Lamas
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF 70770-017, Brazil
| | - Kara Schmidlin
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Arvind Varsani
- The Biodesign Center for Fundamental and Applied Microbiomics, Center for Evolution and Medicine School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA.
- Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Observatory, Cape Town 7925, South Africa.
| | - Simone G Ribeiro
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF 70770-017, Brazil.
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Bovo AADA, Magioli M, Percequillo AR, Kruszynski C, Alberici V, Mello MAR, Correa LS, Gebin JCZ, Ribeiro YGG, Costa FB, Ramos VN, Benatti HR, Lopes B, Martins MZA, Diniz-Reis TR, Camargo PBD, Labruna MB, Ferraz KMPMDB. Human-modified landscape acts as refuge for mammals in Atlantic Forest. BIOTA NEOTROPICA 2018. [DOI: 10.1590/1676-0611-bn-2017-0395] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract: Human-modified landscapes (HMLs) are composed by small, isolated and defaunated forest fragments, which are surrounded by agricultural and urban areas. Information on species that thrives in these HMLs is essential to direct conservation strategies in local and regional scales. Since HMLs are dominant in the Atlantic Forest, we aimed to assess the mammalian diversity in a HML in southeastern Brazil and to propose conservation strategies. We collected data of terrestrial (small-, medium- and large-sized) and volant mammals in three small forest fragments (10, 14 and 26 ha) and adjacent areas, between 2003 and 2016, using complementary methods: active search, camera trapping, live-traps, mist nets and occasional records (i.e., roadkills). In addition, we used secondary data to complement our species list. We recorded 35 native mammal species (6 small-sized, 16 medium- and large-sized, and 13 bats) and seven exotic species in the HML. The recorded mammal assemblage (non-volant and volant), although mainly composed of common and generalist species, includes three medium- and large-sized species nationally threatened (Leopardus guttulus, Puma concolor and Puma yagouaroundi) and two data deficient species (Galictis cuja and Histiotus velatus), highlighting the importance of this HML for the maintenance and conservation of mammal populations. Despite highly impacted by anthropogenic disturbances, the study area harbors a significant richness of medium- and large-sized mammals, being an important biodiversity refuge in the region. However, this biodiversity is threatened by the low quality of the habitats, roadkills and abundant populations of domestic cats and dogs. Therefore, we stress the need of conservation strategies focusing on the medium- and large-sized mammals as an umbrella group, which could benefit all biodiversity in the landscape. We recommend actions that promotes biological restoration, aiming to increase structural composition and connectivity of the forest fragments, reducing roadkills and controlling the domestic cats and dogs' populations, in order to maintain and improve the diversity of mammals in long-term.
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Affiliation(s)
| | | | | | - Cecilia Kruszynski
- Universidade de São Paulo, Brazil; Leibniz Institut fur Zoo und Wildtierforschung eV, Germany
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Rocha VJ, Sekiama ML, Gonçalves DD, Sampieri BR, Barbosa GP, Dias TDC, Rossi HR, Souza PFPD. CAPIVARAS (Hydrochoerus hydrochaeris) E A PRESENÇA DO CARRAPATO (Amblyomma sculptum) NO CAMPUS DA UFSCAR-ARARAS, SÃO PAULO. CIÊNCIA ANIMAL BRASILEIRA 2017. [DOI: 10.1590/1089-6891v18e-44671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Capivaras são territoriais e vivem em grupos sociais, ocorrendo comumente em áreas antropizadas. Em algumas regiões do Brasil, estes animais apresentam infestação por carrapatos do gênero Amblyomma, que por sua vez são considerados como principal vetor biológico e reservatório natural da bactéria Rickettsia rickettsii, agente causador da Febre Maculosa Brasileira. Na UFSCar campus Araras, a interação entre capivaras, carrapatos e comunidade acadêmica é frequente, ocorrendo principalmente durante a estação seca. Este estudo teve como objetivo realizar um censo populacional das capivaras que ocupam o campus, identificando sua área de uso e se estes roedores se encontravam infestados por carrapatos. Realizou-se observação direta das capivaras, captura-marcação e recaptura com uso de um brete, e também coleta dos carrapatos nas capivaras e no ambiente. Registrou-se um total de 56 capivaras, com densidade de 1,50 ind./ha. Foram capturados 24 animais, sendo 25% machos e 75% fêmeas, dos quais 25% eram adultos, 45,8% jovens e 29,2% filhotes. A espécie de carrapato amplamente encontrada infestando tanto os animais como o ambiente foi A. sculptum. Conclui-se que o grupo de capivaras apresentou um número elevado de indivíduos por causa da abundância de recursos e ausência de predadores, e também com grande infestação por carrapatos.
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Verdade LM, Palomares F, Couto HTZ, Polizel JL. Land-use change and an exotic potential prey for the jaguar: a reply to da Rosa et al
. Anim Conserv 2017. [DOI: 10.1111/acv.12368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L. M. Verdade
- Laboratório de Ecologia Isotópica; CENA; Universidade de São Paulo; Piracicaba Brazil
| | - F. Palomares
- Departamento de Biologia de la Conservación; Estación Biológica de Doñana; CSIC; Sevilla Spain
| | - H. T. Z. Couto
- Departamento de Ciências Florestais; ESALQ; Universidade de São Paulo; Piracicaba Brazil
| | - J. L. Polizel
- Departamento de Ciências Florestais; ESALQ; Universidade de São Paulo; Piracicaba Brazil
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Nasser JT, Lana RC, Silva CMDS, Lourenço RW, da Cunha e Silva DC, Donalísio MR. Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2016; 18:299-312. [PMID: 26083504 DOI: 10.1590/1980-5497201500020002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 09/29/2014] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Brazilian spotted fever is an emerging zoonosis notified mainly in the Southeast of Brazil, especially due to its high level of lethality. OBJECTIVE To analyze the epidemiological and spatial pattern of the disease in the municipality of Valinhos (106,793 inhabitants), São Paulo, Southeastern region of Brazil, in the period between 2001 and 2012. METHODS All laboratory-confirmed cases with likely site of infection in the city (n = 49) notified in the Brazilian Case Registry Database were studied. Sites were geocoded using the cartographic base of the city and Google Earth (geographic coordinates) with correction according to the Brazilian Geodetic System. We used the Kernel estimator to analyze the density of the cases on the map. Land cover and distance to basins of all cases were analyzed. Information about tick species and primary hosts were obtained from reports of the Superintendence of Control of Endemic Diseases. RESULTS Seasonality of the disease was observed with the highest incidence from June to November, and in 2005 and 2011. The most affected groups were men (79.6%) aged 20-49 years old (49%). Lethality was found to be 42.9%. Maps showed the progressive registration of cases in the urban area. Capybaras were reported as the main primary host, and Amblyomma cajennense was identified in probable sites of infection during field investigation. The likely sites of infection were mostly located near basins, dirty pastures, and bordering woods. CONCLUSIONS The transmission pattern of Brazilian spotted fever in Valinhos is similar to that in other cities in the region, where capybara is the main primary host and an amplifier of R. rickettsii. Over the years, a higher occurrence of cases has been identified in the urban area of the city.
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Affiliation(s)
- Jeanette Trigo Nasser
- Laboratory of Spatial Analysis of Epidemiological Data, School of Medical Sciences, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Rafael César Lana
- Department of Public Health of Valinhos, Secretariat of Health of Valinhos, Valinhos, SP, Brazil
| | | | - Roberto Wagner Lourenço
- School of Environmental Engineering, Universidade Estadual Paulista Júlio de Mesquita Filho, Sorocaba, SP, Brazil
| | | | - Maria Rita Donalísio
- Laboratory of Spatial Analysis of Epidemiological Data, School of Medical Sciences, Universidade Estadual de Campinas, Campinas, SP, Brazil
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Dutra LAL, de Freitas Almeida GM, Oliveira GP, Abrahão JS, Kroon EG, Trindade GDS. Molecular evidence of Orthopoxvirus DNA in capybara (Hydrochoerus hydrochaeris) stool samples. Arch Virol 2016; 162:439-448. [PMID: 27771792 DOI: 10.1007/s00705-016-3121-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 10/13/2016] [Indexed: 11/24/2022]
Abstract
Vaccinia virus (VACV) is responsible for outbreaks in Brazil and has immense potential as an emerging virus. VACV can be found naturally circulating in India, Pakistan and South America, where it causes infections characterised by exanthematic lesions in buffaloes, cattle and humans. The transmission cycle of Brazilian VACV has still not been fully characterised; one of the most important gaps in knowledge being the role of wild animals. Capybaras, which are restricted to the Americas, are the world's largest rodents and have peculiar characteristics that make them possible candidates for being part of a natural VACV reservoir. Here, we developed a method for detecting orthopoxvirus DNA in capybara stool samples, and have described for the first time the detection of orthopoxvirus DNA in capybaras samples from three different regions in Brazil. These findings strongly suggest that capybaras might be involved in the natural transmission cycle of VACV and furthermore represent a public health problem, when associated with Brazilian bovine vaccinia outbreaks. This makes infected animals an important factor to be considered when predicting and managing Brazilian VACV outbreaks.
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Affiliation(s)
- Lara Ambrosio Leal Dutra
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil
- Department of Biological and Environmental Sciences, University of Jyvaskyla, Jyvaskyla, Finland
| | - Gabriel Magno de Freitas Almeida
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil
- Department of Biological and Environmental Sciences, University of Jyvaskyla, Jyvaskyla, Finland
| | - Graziele Pereira Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil
| | - Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, Brasil.
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Dracz RM, Ribeiro VMA, Pereira CADJ, Lima WDS. Occurrence of Fasciola hepatica (Linnaeus, 1758) in capybara (Hydrochoerus hydrochaeris) (Linnaeus, 1766) in Minas Gerais, Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2016; 25:364-7. [DOI: 10.1590/s1984-29612016021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/29/2016] [Indexed: 11/22/2022]
Abstract
Abstract Fasciola hepatica is a parasite that affects the hepatic ducts of several species of domestic and wild vertebrates, causing huge economic losses to livestock rearing worldwide. Reports on occurrences of F. hepatica in capybaras are an important epidemiological aspect of this disease, since these rodents can be a source of contamination for other animals and humans. In the present study, conducted in a rural area of the municipality of Confins, Minas Gerais, fresh feces from capybaras were collected from the ground near a lagoon at the edge of the Ribeirão da Mata river. These were examined using the technique of four metal sieves. F. hepatica eggs were recovered. This trematode species was confirmed by observing morphological characteristics and measuring the eggs recovered from the capybara feces, and through experimental infection of Lymnaea columella (Say, 1817) by miracidia from these eggs and subsequent infection of C57/BL06 mice with metacercariae originating from these infected mollusks. The data suggest the occurrence of natural cycle of F. hepatica in this region and provide a warning that expansion of the geographical distribution of this parasite by means of this rodent is possible. It is therefore important to adopting measures for epidemiological control of this helminthiasis.
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Fracassi NG, Buchter WM, Pereira JA, Borodowski ED, Somma D. Determinants of capybara presence in afforestations of the lower delta of the Paraná river, Argentina. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2015. [DOI: 10.1080/01650521.2015.1110406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Brites-Neto J, Brasil J, Roncato Duarte KM. Epidemiological surveillance of capybaras and ticks on warning area for Brazilian spotted fever. Vet World 2015; 8:1143-9. [PMID: 27047211 PMCID: PMC4774785 DOI: 10.14202/vetworld.2015.1143-1149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 08/19/2015] [Accepted: 08/28/2015] [Indexed: 11/28/2022] Open
Abstract
Aim: The vulnerability of tropical developing countries to the emerging disease constitutes a critical phenomenon in which the invasion of wild niches by human hosts, contributes to expansion of zoonotic diseases, such as the Brazilian spotted fever (BSF). This study performed a diagnosis of species occurrence of their hosts (Hydrochoerus hydrochaeris) and vectors (Amblyomma sculptum and Amblyomma dubitatum) on the warning area for this reemerging disease in Brazil. Materials and Methods: The study was conducted in a warning area for BSF in the city of Americana, São Paulo state. The occurrence of capybaras was registered by use of binoculars and GPS equipment and 24 acarological researches were performed through 180 CO2 traps. Samples of adult ticks were dissected for salivary glands removal, DNA extraction, and evaluation by polymerase chain reaction (PCR) being tested by initial gltA-PCR, ompA-PCR, and Rickettsia bellii-specific PCR, with the positive samples subjected to sequencing. Results: Eleven clusters of capybaras (total of 71 individuals), were observed along the riparian of Ribeirão Quilombo and 7,114 specimens of A. sculptum and 7,198 specimens of A. dubitatum were collected in this same area. About 568 samples of adult ticks were dissected for salivary glands removal, DNA extraction and evaluation by gltA-PCR, with results of 1.94% (11/568) of positive samples. Results for the initial gltA-PCR indicated none positive sample to Rickettsia species into A. sculptum and 11 positive samples to A. dubitatum. These samples were negative to the ompA-PCR and positive to the Rickettsia bellii-specific PCR protocol and subjected to DNA sequencing, whose result indicated 100% similarity to Rickettsia bellii. The distribution of tick species A. sculptum and A. dubitatum was configured regarding to the biotic potential of the riparian areas, measuring the risks for BSF in peri-urban areas of Americana. Conclusion: These results confirmed a status of epidemiological warning with a strong association of the amplifiers hosts of Rickettsia and tick vectors for the transmission of BSF to humans in this region.
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Affiliation(s)
- José Brites-Neto
- Department of Epidemiological Surveillance, Secretariat of Health, Americana, São Paulo, Brazil
| | - Jardel Brasil
- Department of Epidemiological Surveillance, Secretariat of Health, Americana, São Paulo, Brazil
| | - Keila Maria Roncato Duarte
- Department of Genetics and Animal Reproduction, Institute of Animal Science, Nova Odessa, São Paulo, Brazil
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Souza CED, Pinter A, Donalisio MR. Risk factors associated with the transmission of Brazilian spotted fever in the Piracicaba river basin, State of São Paulo, Brazil. Rev Soc Bras Med Trop 2015; 48:11-7. [PMID: 25860458 DOI: 10.1590/0037-8682-0281-2014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/23/2015] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Brazilian spotted fever (BSF) is a disease transmitted by ticks for which the etiological agent is Rickettsia rickettsii. The present essay evaluates the risk factors associated with the transmission of cases of BSF in the time period between 2003 and 2013 in the Piracicaba river basin, state of São Paulo. METHODS This essay presents a retrospective study to identify the factors associated with the transmission of cases of BSF among all suspected cases identified by the System for Epidemiological Surveillance of São Paulo (CVE). After the description of temporal distribution (onset of symptoms) and the environmental and demographic variations of the confirmed and discarded cases, a multiple logistic regression model was applied. RESULTS We searched 569 probable locations of infection (PLI) with 210 (37%) confirmed cases of BSF and 359 (63%) discarded cases. The associated variables for the confirmation of BSF in the multiple logistic model using a confidence interval (CI) of 95% were age (OR = 1.025 CI: 1.015-1.035), the presence of Amblyomma sculptum in the environment (OR = 1.629 CI: 1.097-2.439), the collection of ticks from horses (OR = 1.939 CI: 0.999-3.764), the presence of capybaras (OR = 1.467 CI: 1.009-2.138), an urban environment (OR = 1.515 CI: 1.036-2.231), and the existence of a dirty pasture (OR = 1.759 CI: 1.028-3.003). CONCLUSIONS The factors associated with the confirmation of BSF cases included an urban environment, age, presence of the A. sculptum vector, the collection of ticks from horses, the presence of a capybara population, and a dirty pasture environment.
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Affiliation(s)
- Celso Eduardo de Souza
- Laboratório de Carrapatos, Superintendência de Controle de Endemias, Mogi Guaçu, SP, Brazil
| | - Adriano Pinter
- Coordenação dos Laboratórios de Referência e Desenvolvimento Científico, Superintendência de Controle de Endemias, São Paulo, SP, Brazil
| | - Maria Rita Donalisio
- Departamento de Saúde Coletiva, Faculdade de Ciências Médicas, Universidade de Campinas, Campinas, SP, Brazil
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Felix GA, Almeida Paz ICL, Piovezan U, Garcia RG, Lima KAO, Nääs IA, Salgado DD, Pilecco M, Belloni M. Feeding behavior and crop damage caused by capybaras (Hydrochoerus hydrochaeris) in an agricultural landscape. BRAZ J BIOL 2014; 74:779-86. [PMID: 25627586 DOI: 10.1590/1519-6984.02113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Accepted: 11/13/2013] [Indexed: 11/22/2022] Open
Abstract
This study aimed to assess the yield loss caused by capybaras in rural areas of Dourados-MS, their feeding periods, crop preferences and the landscape characteristics of farms that may affect the occurrence of capybara's herds. Semi-structured interviews in 24 different farms were done during a period between April 2010 and August 2011. Field observations were held at different times of the day, and also during the night in order to record peaks of the feeding behavior in six farms. Direct counting of capybaras along with the group of animals reported as seen by the farmers during the interviews was used to estimate the size of herds. Data was analyzed using the Principal Components Analyses and the Analytic Hierarchy Process. The average number of capybaras found in a regular herd was 18.8 ± 7.90 animals. The average number of capybara herd by farms was of 1.38 ± 0.92 while the average number of capybaras by farms was 32.33 ± 27.87. Capybaras selected rice (Oryza sativa) when it was available (14.5% of devastation in 1.18% of total planted area); however, the most eaten crop was corn (Zea mays) with 38.55% of loss rate in 16.17% of the total planted area. Capybaras ate mostly in the evening and during the night. The availability of water resources in the rural area predisposed the occurrence of capybara's herds.
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Affiliation(s)
- G A Felix
- School of Veterinary Medicine and Zootechny, Federal University of Goiás - UFG, Campus Samambaia, Goiânia, GO, Brazil
| | - I C L Almeida Paz
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
| | | | - R G Garcia
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
| | - K A O Lima
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
| | - I A Nääs
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
| | - D D Salgado
- Catholic University of Campinas - PUCCAMP, Campinas, SP, Brazil
| | - M Pilecco
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
| | - M Belloni
- College of Agricultural Sciences, Federal University of Grande Dourados - UFGD, Dourados, MS, Brazil
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Almeida AR, Biondi D. Área de uso de Hydrochoerus hydrochaeris L. em ambiente urbano. CIÊNCIA ANIMAL BRASILEIRA 2014. [DOI: 10.1590/1809-6891v15i319663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
As capivaras são bastante comuns nas áreas verdes da capital do Estado do Paraná, que apresentam lagos e rios dentro de seus limites. Este estudo objetivou analisar a área de uso de uma população de capivaras em uma destas áreas, o Parque Municipal Tingui. Para este fim, foram coletados dados dos registros diretos da presença dos animais e de vestígios deixados por eles na área de estudo, além de observações do comportamento social da espécie. As coordenadas geográficas dos pontos onde foram observados os vestígios ou a presença direta dos animais foram plotadas no mapa do Parque Tingui. Os resultados mostraram que as capivaras utilizaram toda extensão do parque, porém, ocorreu uma maior concentração de visualizações, de fezes e de marcação de território na região norte do parque, indicando essa como a área de maior uso pelas capivaras. Quanto ao comportamento, os resultados evidenciaram ocorrências de conflitos entre os animais que podem estar relacionados à competição por território.
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Corriale MJ, Herrera EA. Patterns of habitat use and selection by the capybara (Hydrochoerus hydrochaeris): a landscape-scale analysis. Ecol Res 2013. [DOI: 10.1007/s11284-013-1113-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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FELIX GA, ALMEIDA PAZ ICL, NÄÄS IA, GARCIA RG, MOI M, CALDARA FR, SANTI FM, Costa JUNIOR RG. Hydrochoerus hydrochaeris: ECOLOGIA E POTENCIAL DA ESPÉCIE PARA PRODUÇÃO - UMA REVISÃO. REVISTA BRASILEIRA DE ENGENHARIA DE BIOSSISTEMAS 2011. [DOI: 10.18011/bioeng2011v5n1p47-56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A capivara (Hydrochoerus hydrochaeris), maior roedor existente, é considerado um animal silvestre de interesse econômico. Entretanto, no Brasil, restrições legais impedem o desenvolvimento de sistemas de manejo das populações silvestres livres. Fora do Brasil, há o exemplo da Venezuela, onde é praticada a exploração sustentável das populações silvestres de capivaras, por meio da caça controlada, que é uma opção viável para o controle deste roedor e uma nova fonte de renda para a população. Essa revisão foi redigida com o objetivo de discutir sobre a ecologia da espécie, a sua importância para a produção animal, padrões de consumo da carne e mercado consumidor.
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Affiliation(s)
- Gisele A. FELIX
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | | | - Irenilza A. NÄÄS
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | - Rodrigo G. GARCIA
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | - Marta MOI
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | - Fabiana R. CALDARA
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | - Francielen M. SANTI
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
| | - Rômulo G. Costa JUNIOR
- Faculdade de Ciências Agrárias da Universidade Federal da Grande Dourados FCA/UFGD. Dourados-MS
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HABY NERISSAA, DELEAN STEVEN, BROOK BARRYW. Specialist resources are key to improving small mammal distribution models. AUSTRAL ECOL 2011. [DOI: 10.1111/j.1442-9993.2011.02267.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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The influence of environmental variables on capybara (Hydrochoerus hydrochaeris: Rodentia, Hydrochoeridae) detectability in anthropogenic environments of southeastern Brazil. POPUL ECOL 2009. [DOI: 10.1007/s10144-009-0181-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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