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Hernández F, Manqui J, González-Acuña D, Beltrami E, Verdugo C, Acosta-Jamett G. Abundance and associated factors of Amblyomma tigrinum (Acari: Ixodidae) infesting wild foxes in north-central Chile. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2023; 32:e008223. [PMID: 37909605 DOI: 10.1590/s1984-29612023062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/29/2023] [Indexed: 11/03/2023]
Abstract
The tick Amblyomma tigrinum inhabits areas with diverse climatic conditions, with adult stages parasitizing wild canids, such as chilla (Lycalopex griseus) and culpeo (Lycalopex culpaeus) foxes. We described the infestation loads in wild foxes captured at three sites (periurban, rural and wild) through an anthropization gradient in north-central Chile. We tested whether local-scale environmental and/or individual host factors can predict tick abundance by using negative binomial models. During 2018-2020 (spring and summer), we captured 116 foxes (44 chillas and 72 culpeos), and 102 of them were infested with ticks (87.9%, CI=80.6-93.2%). We collected 996 A. tigrinum adult ticks, estimating a total mean abundance of 8.6±0.8 ticks/host. Periurban and rural foxes harbored greater tick loads than foxes from the wild site (2.34 and 1.71 greater, respectively) while tick abundance in summer decreased by up to 57% compared to spring. Tempered, more humid climate conditions of the periurban site could favor the development and survival of adults A. tigrinum; and ticks may have adopted a quiescent stage or similar survival mechanisms to cope with summer temperature increases related to the ongoing megadrought. Further studies are warranted to understand the underlying factors determining the life cycle of A. tigrinum at larger spatiotemporal scales.
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Affiliation(s)
- Felipe Hernández
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Center for Surveillance and Evolution of Infectious Diseases, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Jonatan Manqui
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Programa de Magíster en Ecología Aplicada, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | | | - Esperanza Beltrami
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Claudio Verdugo
- Center for Surveillance and Evolution of Infectious Diseases, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Instituto de Patología Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Gerardo Acosta-Jamett
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Center for Surveillance and Evolution of Infectious Diseases, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
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Cevidanes A, Ulloa-Contreras C, Di Cataldo S, Latrofa MS, Gonzalez-Acuña D, Otranto D, Millán J. Marked host association and molecular evidence of limited transmission of ticks and fleas between sympatric wild foxes and rural dogs. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:239-250. [PMID: 33772813 DOI: 10.1111/mve.12515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Wild and domestic carnivores share ectoparasites, although molecular evidence is lacking. The goals of this study were to describe tick and flea infestation in sympatric free-ranging dogs Canis lupus familiaris (Linnaeus, 1758) (Carnivora: Canidae) and Andean foxes Lycalopex culpaeus (Molina, 1782) (Carnivora: Canidae) and to determine whether interspecific transmission occurs. Fleas and ticks retrieved from 79 foxes and 111 dogs in the human-dominated landscapes of central Chile were identified and a subset of specimens characterized by PCR and amplicon sequencing. Each ectoparasite species was clearly associated with a host: abundance and occurrence of Rhipicephalus sanguineus (Latreille 1806) (Acari: Ixodidae) and Ctenocephalides spp. (Siphonaptera: Pulicidae) were significantly higher in dogs than in foxes, whereas the opposite was true for Amblyomma tigrinum (Koch, 1844) (Acari: Ixodidae) and Pulex irritans (Linnaeus, 1758) (Siphonaptera: Pulicidae). Genetic analyses of a subset of ectoparasites revealed that dogs and foxes shared a limited number of nucleotide sequence types, suggesting that the interspecific transmission of these ectoparasites happens infrequently. Data also indicated that the ecological association and biological cycles of ticks and fleas determine the ectoparasite fauna of sympatric carnivores. In conclusion, our study shows that cross-species transmission should be assessed at a molecular level.
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Affiliation(s)
- A Cevidanes
- Department of Animal Health. NEIKER-Basque Institute for Agricultural Research and Development. Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Bizkaia, Derio, Spain
- Programa de Doctorado en Medicina de la Conservación, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - C Ulloa-Contreras
- Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Región Metropolitana, Chile
| | - S Di Cataldo
- Programa de Doctorado en Medicina de la Conservación, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - M S Latrofa
- Department of Veterinary Medicine, University of Bari 'Aldo Moro', Bari, Italy
| | - D Gonzalez-Acuña
- Laboratorio de Parásitos y Enfermedades en Fauna Silvestre, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - D Otranto
- Department of Veterinary Medicine, University of Bari 'Aldo Moro', Bari, Italy
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, Iran
| | - J Millán
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, Spain
- Fundación ARAID, Zaragoza, Spain
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Arrais RC, Paula RC, Martins TF, Nieri-Bastos FA, Marcili A, Labruna MB. Survey of ticks and tick-borne agents in maned wolves (Chrysocyon brachyurus) from a natural landscape in Brazil. Ticks Tick Borne Dis 2020; 12:101639. [PMID: 33360385 DOI: 10.1016/j.ttbdis.2020.101639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/31/2020] [Accepted: 12/07/2020] [Indexed: 11/25/2022]
Abstract
This study evaluated ticks and tick-borne agents in 104 captures of the maned wolf Chrysocyon brachyurus (50 different individuals and 54 recaptures) in the Serra da Canastra National Park (SCNP), a Cerrado preserved area in southeastern Brazil, from 2005 to 2012. From the 104 capture events, a total of 1,206 ticks were collected on 94 occasions (90.4 %), and identified into five species: Amblyomma tigrinum (77.3 % of all collected ticks), Amblyomma sculptum (16.6 %), Amblyomma ovale (0.1 %), Amblyomma brasiliense (0.1 %), Rhipicephalus microplus (0.1 %), and Amblyomma spp. larvae (5.8 %). Molecular analyses of A. tigrinum adult ticks revealed the presence of 'Candidatus Rickettsia andeanae', Rickettsia parkeri sensu stricto, two different haplotypes of 'Ca. Midichloria sp.', and a Hepatozoon canis haplotype. Molecular analyses of maned wolf blood samples revealed two distinct haplotypes of Hepatozoon spp., one identical to the H. canis genotype that was detected in the A. tigrinum ticks, and a Hepatozoon americanum-like haplotype. None tick or blood samples yielded amplicons through PCR assays targeting the genera Ehrlichia, Anaplasma, Babesia, Rangelia, Cytauxzoon, and Theileria. Maned wolf serum samples were tested by immunofluorescence assay against antigens of five Rickettsia species (R. parkeri, R. rickettsii, R. amblyommatis, R. rhipicephali, and R. bellii) and Ehrlichia canis. Among 78 serum samples (45 captures plus 33 recaptures), 74 (95 %) were reactive to at least one Rickettsia species, with R. parkeri eliciting the highest endpoint titers. Some maned wolves that were recaptured during the study were shown to seroconvert to R. parkeri. Serum-reactiveness to E. canis was detected in 36 % (16/45) maned wolves. During the study, general clinical signs of tick-borne diseases were not found in any of the captured animals, indicating that they were under a good health status in the SCNP, despite of been exposed to ticks (mostly A. tigrinum) and some tick-borne agents (Rickettsia, Hepatozoon, Ehrlichia). The results of the present study might represent baseline data for the conservation of the maned wolf in its natural habitat, which should be used to interpret further studies about ticks and tick-borne diseases in maned wolves within human-modified landscapes.
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Affiliation(s)
- Ricardo C Arrais
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Rogério C Paula
- Centro Nacional de Pesquisa e Conservação de Mamíferos Carnívoros, Instituto Chico Mendes de Conservação da Biodiversidade, Ministério do Meio Ambiente, Atibaia, SP, Brazil
| | - Thiago F Martins
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil; Departamento de Laboratórios Especializados, Superintendência de Controle de Endemias, Secretaria de Estado da Saúde de São Paulo, São Paulo, SP, Brazil
| | - Fernanda A Nieri-Bastos
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Arlei Marcili
- Programa de Pós-graduação em Medicina e Bem-Estar Animal e Saúde Única, Universidade Santo Amaro, R. Prof. Enéas de Siqueira Neto, 340 - Jardim das Imbuias, São Paulo, SP, 04829-300, Brazil
| | - Marcelo B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
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Romer Y, Borrás P, Govedic F, Nava S, Carranza JI, Santini S, Armitano R, Lloveras S. Clinical and epidemiological comparison of Rickettsia parkeri rickettsiosis, related to Amblyomma triste and Amblyomma tigrinum, in Argentina. Ticks Tick Borne Dis 2020; 11:101436. [DOI: 10.1016/j.ttbdis.2020.101436] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 03/05/2020] [Accepted: 03/27/2020] [Indexed: 11/26/2022]
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Millán J, Travaini A, Cevidanes A, Sacristán I, Rodríguez A. Assessing the natural circulation of canine vector-borne pathogens in foxes, ticks and fleas in protected areas of Argentine Patagonia with negligible dog participation. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2018; 8:63-70. [PMID: 30622893 PMCID: PMC6319024 DOI: 10.1016/j.ijppaw.2018.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 12/16/2022]
Abstract
We collected blood and/or ectoparasites from 49 South American grey foxes (Lycalopex griseus) and two Andean foxes (L. culpaeus) caught in two National Parks of southern Argentine Patagonia (Bosques Petrificados, BPNP; and Monte León, MLNP) where dogs are nearly absent (density < 0.01 dog/km2). Common ectoparasites were the flea Pulex irritans (88% prevalence) and the tick Amblyomma tigrinum (29%). Conventional PCR and sequencing of 49 blood samples, 299 fleas analysed in 78 pools, and 21 ticks revealed the presence of DNA of the following canine vector-borne pathogens: in grey foxes, Rickettsia sp. (3%), hemoplasmas (8%), including Mycoplasma haemocanis, and Hepatozoon sp. (50%); in P. irritans, Bartonella spp. (72% of flea pools from 76% of foxes), mostly B. vinsonii subsp. berkhoffii but also B. rochalimae, Anaplasmataceae (Wolbachia sp.; 60% and 54%), and M. haemocanis/haemofelis (29% and 18%); and in A. tigrinum, Hepatozoon sp. (33% of ticks in 4 of 7 foxes). No piroplasmid DNA was detected in any sample. Andean foxes were negative for all tested pathogens. Two different Hepatozoon haplotypes were detected: the most prevalent was phylogenetically associated with H. felis, and the other with H. americanum and related sequences. Amblyomma tigrinum and Hepatozoon sp. were more abundant and/or prevalent in BPNP than in colder MLNP, 300 km southwards, perhaps located close to the limit for tick suitability. Bartonella v. berkhoffii was also significantly more prevalent in fleas of foxes in BPNP than in MLNP. This study provides novel information about natural host-pathogen associations in wildlife, markedly extends the distribution area in South America of arthropods and vector-borne pathogens of veterinary and public health interest, and contributes preliminary evidence about the potential role of A. tigrinum and P. irritans as vectors, respectively, for potentially new species of Hepatozoon from Lycalopex spp. and for M. haemocanis that should be further investigated. Foxes and their ticks and fleas analysed in two remote areas of Argentine Patagonia. Hepatozoon (50%), hemoplasmas (8%), Rickettsia (3%) DNA detected in foxes. Two Hepatozoon haplotypes: one related with H. felis, the other with H. americanum. Role of Amblyomma tigrinum as Hepatozoon vector is proposed. Bartonella and hemoplasma DNA detected in P. irritans from 76% and 18% of foxes.
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Affiliation(s)
- Javier Millán
- Facultad de Ciencias de la Vida, Universidad Andres Bello, República 252, Santiago, Chile
- Corresponding author.
| | - Alejandro Travaini
- Centro de Investigaciones Puerto Deseado, Universidad Nacional de la Patagonia Austral, CONICET, Avda. Prefectura Naval s/n, 9050, Puerto Deseado, Santa Cruz, Argentina
| | - Aitor Cevidanes
- PhD Program in Conservation Medicine, Facultad de Ciencias de la Vida, Universidad Andres Bello, República 252, Santiago, Chile
| | - Irene Sacristán
- PhD Program in Conservation Medicine, Facultad de Ciencias de la Vida, Universidad Andres Bello, República 252, Santiago, Chile
| | - Alejandro Rodríguez
- Estación Biológica de Doñana, CSIC, Américo Vespucio 26, 41092, Sevilla, Spain
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Lado P, Nava S, Mendoza-Uribe L, Caceres AG, Delgado-de la Mora J, Licona-Enriquez JD, Delgado-de la Mora D, Labruna MB, Durden LA, Allerdice MEJ, Paddock CD, Szabó MPJ, Venzal JM, Guglielmone AA, Beati L. The Amblyomma maculatum Koch, 1844 (Acari: Ixodidae) group of ticks: phenotypic plasticity or incipient speciation? Parasit Vectors 2018; 11:610. [PMID: 30497533 PMCID: PMC6267817 DOI: 10.1186/s13071-018-3186-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/06/2018] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The goal of this study was to reassess the taxonomic status of A. maculatum, A. triste and A. tigrinum by phylogenetic analysis of five molecular markers [four mitochondrial: 12S rDNA, 16S rDNA, the control region (DL) and cytochrome c oxidase 1 (cox1), and one nuclear: ribosomal intergenic transcribed spacer 2 (ITS2)]. In addition, the phenotypic diversity of adult ticks identified as A. maculatum and A. triste from geographically distinct populations was thoroughly re-examined. RESULTS Microscopic examination identified four putative morphotypes distinguishable by disjunct geographical ranges, but very scant fixed characters. Analysis of the separated mitochondrial datasets mostly resulted in conflicting tree topologies. Nuclear gene sequences were almost identical throughout the geographical ranges of the two species, suggesting a very recent, almost explosive radiation of the terminal operational taxonomic units. Analysis of concatenated molecular datasets was more informative and indicated that, although genetically very close to the A. maculatum - A. triste lineage, A. tigrinum was a monophyletic separate entity. Within the A. maculatum - A. triste cluster, three main clades were supported. The two morphotypes, corresponding to the western North American and eastern North American populations, consistently grouped in a single monophyletic clade with many shared mitochondrial sequences among ticks of the two areas. Ticks from the two remaining morphotypes, south-eastern South America and Peruvian, corresponded to two distinct clades. CONCLUSIONS Given the paucity of morphological characters, the minimal genetic distance separating morphotypes, and more importantly the fact that two morphotypes are genetically indistinguishable, our data suggest that A. maculatum and A. triste should be synonymized and that morphological differences merely reflect very recent local adaptation to distinct environments in taxa that might be undergoing the first steps of speciation but have yet to complete lineage sorting. Nonetheless, future investigations using more sensitive nuclear markers and/or crossbreeding experiments might reveal the occurrence of very rapid speciation events in this group of taxa. Tentative node dating revealed that the A. tigrinum and A. maculatum - A. triste clades split about 2 Mya, while the A. maculatum - A.triste cluster radiated no earlier than 700,000 years ago.
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Affiliation(s)
- Paula Lado
- U. S. National Tick Collection, Institute for Coastal Plain Science, Georgia Southern University, Statesboro, GA 30460 USA
- Present address: Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43212 USA
| | - Santiago Nava
- Instituto Nacional de Tecnologia Agropecuaria, Estación Experimental Agropecuaria Rafaela, Santa Fe, Argentina
| | | | - Abraham G. Caceres
- Departamento Académico de Microbiologia Médica, Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Peru
- Laboratorio de Entomología, Instituto Nacional de Salud, Lima, Peru
| | | | | | - David Delgado-de la Mora
- Department of Agronomic and Veterinary Sciences, Technologic Institute of Sonora, Ciudad Obregón, Sonora Mexico
| | - Marcelo B. Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Lance A. Durden
- Department of Biology, Georgia Southern University, Statesboro, GA 30460 USA
| | - Michelle E. J. Allerdice
- Rickettsial Zoonoses Branch, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA USA
| | - Christopher D. Paddock
- Rickettsial Zoonoses Branch, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA USA
| | - Matias P. J. Szabó
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais Brazil
| | - José M. Venzal
- Departamento de Parasitología Veterinaria, Facultad de Veterinaria, Universidad de la República, Regional Norte - Salto, Rivera 1350, 50000 Salto, CP Uruguay
| | - Alberto A. Guglielmone
- Instituto Nacional de Tecnologia Agropecuaria, Estación Experimental Agropecuaria Rafaela, Santa Fe, Argentina
| | - Lorenza Beati
- U. S. National Tick Collection, Institute for Coastal Plain Science, Georgia Southern University, Statesboro, GA 30460 USA
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Colombo VC, Fasano AA, Beldomenico PM, Nava S. Tick host specificity: An analysis based on host phylogeny and tick ecological features using Amblyomma triste and Amblyomma tigrinum immature stages. Ticks Tick Borne Dis 2018. [DOI: 10.1016/j.ttbdis.2018.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Llanos-Soto S, Muñoz B, Moreno L, Landaeta-Aqueveque C, Kinsella JM, Mironov S, Cicchino A, Barrientos C, Torres-Fuentes G, González-Acuña D. External and gastrointestinal parasites of the rufous-collared sparrow Zonotrichia capensis (Passeriformes, Emberizidae) in Chile. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2017; 26:314-322. [DOI: 10.1590/s1984-29612017043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/09/2017] [Indexed: 11/22/2022]
Abstract
Abstract A total of 277 rufous-collared sparrows, Zonotrichia capensis Müller, 1776 (Emberizidae), were examined for external parasites. The birds were captured using mist nets in seven locations in northern and central Chile. Additionally, seven carcasses from central Chile (the Biobío region) were necropsied to evaluate the presence of endoparasite infection. Ectoparasites were found on 35.8% (99/277) of the examined birds and they were represented by the following arthropods: feather mites Amerodectes zonotrichiae Mironov and González-Acuña, 2014 (Analgoidea: Proctophyllodidae), Proctophyllodes polyxenus Atyeo and Braasch, 1966 (Analgoidea: Proctophyllodidae), and Trouessartia capensis Berla, 1959 (Analgoidea: Trouessartiidae); a louse Philopterus sp. (Phthiraptera: Ischnocera); and ticks Amblyomma tigrinum Koch, 1844 (Acari: Ixodidae) and Ixodes auritulus Neumann, 1904 (Acari: Ixodidae). Two of the seven necropsied carcasses were infected with the acanthocephalan Mediorhynchus papillosus Van Cleave, 1916 (Gigantorhynchida: Gigantorhynchidae). To our knowledge, this study reports P. polyxenus, Philopterus sp., A. tigrinum, and M. papillosus for the first time for Z. capensis and expands the distributional range for T. capensis to Chile.
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Romer Y, Nava S, Govedic F, Cicuttin G, Denison AM, Singleton J, Kelly AJ, Kato CY, Paddock CD. Rickettsia parkeri rickettsiosis in different ecological regions of Argentina and its association with Amblyomma tigrinum as a potential vector. Am J Trop Med Hyg 2014; 91:1156-60. [PMID: 25349376 DOI: 10.4269/ajtmh.14-0334] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Rickettsia parkeri, a newly recognized tick-borne pathogen of humans in the Americas, is a confirmed cause of spotted fever group rickettsiosis in Argentina. Until recently, almost all cases of R. parkeri rickettsiosis in Argentina have originated from the Paraná River Delta, where entomological surveys have identified populations of R. parkeri-infected Amblyomma triste ticks. In this report, we describe confirmed cases of R. parkeri rickettsiosis from Córdoba and La Rioja provinces, which are located several hundred kilometers inland, and in a more arid ecological region, where A. triste ticks do not occur. Additionally, we identified questing A. tigrinum ticks naturally infected with R. parkeri in Córdoba province. These data provide evidence that another human-biting tick species serves as a potential vector of R. parkeri in Argentina and possibly, other countries of South America.
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Affiliation(s)
- Yamila Romer
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Santiago Nava
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Francisco Govedic
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Gabriel Cicuttin
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Amy M Denison
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Joseph Singleton
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Aubree J Kelly
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Cecilia Y Kato
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Christopher D Paddock
- Hospital F. J. Muñiz, Buenos Aires, Argentina; Instituto Nacional de Tecnología Agropecuaria, Consejo Nacional de Investigaciones Científicas y Técnicas, Rafaela, Santa Fe, Argentina; Sanatorio Allende, Córdoba, Argentina; Instituto de Zoonosis Luis Pasteur, Buenos Aires, Argentina; Infectious Diseases Pathology Branch and Rickettsial Zoonoses Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
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10
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Ogrzewalska M, Literak I, Martins TF, Labruna MB. Rickettsial infections in ticks from wild birds in Paraguay. Ticks Tick Borne Dis 2013; 5:83-9. [PMID: 24231270 DOI: 10.1016/j.ttbdis.2013.08.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 08/03/2013] [Accepted: 08/18/2013] [Indexed: 10/26/2022]
Abstract
Ticks were collected from wild birds at 3 locations in Paraguay during the South American winter in August and September 2012. In total, 480 birds belonging to 106 species were examined. Overall, 31 (6.5%) birds representing 21 species were found parasitized by ticks which were identified as Amblyomma calcaratum Neumann (2 larvae, 20 nymphs), Amblyomma longirostre (Koch) (17 larvae, 3 nymphs), Amblyomma parvum Aragão (7 nymphs), Amblyomma aureolatum (Pallas) (1 nymph), Amblyomma ovale Koch (1 nymph), Amblyomma tigrinum Koch (1 larva), and Amblyomma spp. (4 larvae). Ticks collected accidentally on humans at the study locations during field work included 1 nymph of Amblyomma coelebs Neumann and 54 nymphs of Amblyomma cajennense (Fabricius). Most ticks were individually tested for the presence of Rickettsia species by polymerase chain reaction targeting rickettsial genes gltA and ompA and by amplicon sequencing. Two (12%) out of 17 A. longirostre larvae were found infected with Candidatus 'Rickettsia amblyommii', and 2 (33%) out of 6 A. parvum nymphs were infected with Candidatus 'Rickettsia andeanae'. This study provides the first report of rickettsial infections in Paraguayan ticks.
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Affiliation(s)
- Maria Ogrzewalska
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Ivan Literak
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic; CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.
| | - Thiago F Martins
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Marcelo B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
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11
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Nava S, Guglielmone AA. A meta-analysis of host specificity in Neotropical hard ticks (Acari: Ixodidae). BULLETIN OF ENTOMOLOGICAL RESEARCH 2013; 103:216-224. [PMID: 22954015 DOI: 10.1017/s0007485312000557] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Host specificity of Neotropical hard ticks (Acari: Ixodidae) was analyzed by using the number of hosts species for each tick species and the index of host specificity S(TD)*, which integrates phylogenetic and ecological information. The analyses were based on 4172 records of hard ticks collected from wild and domestic tetrapods. Most tick species included in this study were associated with three to 20 host species. No tick species has been associated either with a single species or with a single genus of host. It was found that the number of host species is sensitive to sampling effort, but not the S(TD)*. The most frequent values of S(TD)* were between 2.5 and 3.5, which shows that the host species more frequently used by Neotropical hard tick species belong to different families or different orders. Immature stages tend to use a broader taxonomic range of hosts than adults, and the interpretation of both measures of host specificity used in this study led to the conclusion that the impact of non-endemic hosts does not alter the patterns of host specificity in Neotropical hard ticks. The index S(TD)* showed that a high proportion of tick species has phylogenetically unrelated species as principal hosts. The conclusion reached in this work indicates that strict host specificity is not common among Neotropical hard ticks and suggests that the influence of tick ecology and evolution of habitat specificity, tick generation time, phenology, time spent off the host and the type of life-cycle could be more important than hosts species.
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Affiliation(s)
- S Nava
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela and Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina.
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12
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Tomassone L, Conte V, Parrilla G, De Meneghi D. Rickettsia infection in dogs and Rickettsia parkeri in Amblyomma tigrinum ticks, Cochabamba Department, Bolivia. Vector Borne Zoonotic Dis 2010; 10:953-8. [PMID: 20426684 DOI: 10.1089/vbz.2009.0126] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Only few published data are available on ticks and tick-borne zoonotic pathogens in Bolivia. To evaluate rickettsial seroprevalence and infection in dogs and ticks, during February-April 2007, we collected whole blood, sera, and ticks from dogs living in the rural, peri-urban, and urban areas of Cochabamba, Bolivia. Dog sera were subjected to enzyme-linked immunosorbent assay test to detect IgG antibodies against Rickettsia rickettsii and 68.2% of samples were found to be positive (n = 30; 95% confidence interval [CI]: 52.4-81.4). Blood samples and ticks were tested using polymerase chain reaction to detect spotted fever group (SFG) rickettsiae. One blood sample was positive for Rickettsia parkeri (2.3%; 95% CI: 0.06-12.3). Ticks were collected from 10 dogs and were identified as Amblyomma tigrinum (n = 44) and Rhipicephalus sanguineus (n = 1). All A. tigrinum ticks were collected from resident dogs from the rural areas of Cochabamba, whereas R. sanguineus was from a dog originating from Santa Cruz. Of 42 DNA samples extracted from ticks, 23 (54.8%; 95% CI: 38.7-70.1) were polymerase chain reaction positive for Rickettsia spp. Sequencing analysis identified 22 samples as R. parkeri and one as Rickettsia aeschlimannii. Positive ticks (all A. tigrinum) were collected from six dogs, all of which were seropositive. This is the first report of SFG rickettsiae in A. tigrinum, suggesting that this tick-like others species in the Amblyomma maculatum group--may play a role in the biological cycle of Ri. parkeri. The high infection prevalence of SFG rickettsiae in ticks and the even higher seroprevalence in dogs suggest an active circulation of agents of rickettsiosis in the study area, although there are no confirmed cases of infection in humans. Our study supports the use of canine serology as risk indicator for SF rickettsioses.
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Affiliation(s)
- Laura Tomassone
- Department of Animal Production, Epidemiology & Ecology, University of Turin, Grugliasco, Torin, Italy
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13
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Seasonal distribution of larvae and nymphs of Amblyomma tigrinum Koch, 1844 (Acari: Ixodidae). Vet Parasitol 2009; 166:340-2. [PMID: 19833442 DOI: 10.1016/j.vetpar.2009.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 08/06/2009] [Accepted: 09/10/2009] [Indexed: 11/24/2022]
Abstract
The seasonality of immature stages of Amblyomma tigrinum was studied in an area of the Chaco phytogeographical province in Córdoba, Argentina by monthly collection of larvae from ground feeding birds and Sigmodontinae rodents, and nymphs from Caviidae rodents from May 2005 to April 2007. An apparent peak of abundance was found from December to May but differences with other months of the year were not significant (P>0.05). These and previous results suggest that the parasitic stages of A. trigrinum are active throughout the year and has more than one generation per year at the study site. Its life cycle appears to be regulated by temperature with no occurrence of diapause.
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Cardoso CP, Stalliviere FM, Schelbauer CA, de Souza AP, Bellato V, Sartor AA. [Amblyomma tigrinum in the Municipality of Lages, SC, and biology observations under laboratory conditions]. ACTA ACUST UNITED AC 2008; 17:56-8. [PMID: 18554444 DOI: 10.1590/s1984-29612008000100013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Accepted: 03/10/2008] [Indexed: 11/21/2022]
Abstract
To study the biological features of Amblyomma tigrinum, samples of engorged females collected from dogs in the city of Lages, SC, Brazil, were maintained in Petri dishes into an incubator at 27+/-1 degrees C and 80+/-10% RH, for egg laying. For the development of the subsequent experimental phases, artificial infestations were performed in rabbits using the technique of the cotton bag glued to the ear's base. The mean period of hatch, feeding and larval molt were 11.67, 5.93 and 10.96 days, respectively, whereas the mean period of feeding and nymph's molt were 12.40 and 16.27 days, respectively. Only one engorged female was obtained, with detachment observed on the 22(nd) day. The longevity periods for larvae, nymphs and adults were 75, 96 and 150 days respectively.
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Affiliation(s)
- Cristina P Cardoso
- Universidade do Estado de Santa Catarina, Centro de Ciências Agroveterinárias, Avenida Luis de Camões 2090, Bairro Conta Dinheiro, Lages, SC, Brazil.
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15
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Nava S, Mangold AJ, Guglielmone AA. The natural hosts of larvae and nymphs of Amblyomma tigrinum Koch, 1844 (Acari: Ixodidae). Vet Parasitol 2006; 140:124-32. [PMID: 16682121 DOI: 10.1016/j.vetpar.2006.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2005] [Revised: 03/10/2006] [Accepted: 03/10/2006] [Indexed: 11/17/2022]
Abstract
The hosts of larvae and nymphs of Amblyomma tigrinum, a tick whose adults feed on wild and domestic Canidae in South America, are uncertain. A 17 months survey was carried out trapping wild vertebrates in north-western Córdoba, Argentina, to evaluate their parasitism with A. tigrinum subadults. Larvae and nymphs of this tick species were identified conventionally and by comparison of 16S rDNA sequences with GenBank deposited sequences. A total of 207 small and medium-sized rodents and 182 birds were captured and examined for ticks. Most ticks on birds were from ground forest feeding birds (BB) with a minimal contribution of birds feeding in open pastures. All ticks from rodents were obtained from representatives of the families Cricetidae (SR) and Caviidae (MR). Percent of larvae infestation was higher (P<0.01, Chi-square distribution) in BB (55.2%) and SR (46.4%) than in MR (17.4%) and the same trend was found for number of larvae on these hosts (test of Kruskal-Wallis). Caviidae (only representative Galea musteloides) rodents were extremely prone to be infested with nymphs of A. tigrinum (94.2%) followed by BB (50.6%) and SR (3.6%) (P<0.01) and the same tendency was found for number of nymphs (P<0.01). The index of aggregation for nymphs on MR was the lowest (0.409) followed by nymphs on BB (0.706) which may be a consequence of higher and homogenous exposure of G. musteloides to host-seeking nymphs. Several BB are food source for both larvae and nymphs of A. tigrinum while for rodents larvae were common only on SR (mainly on the Sigmodontinae Akodon dolores and Graomys sp.) and nymphs feed almost exclusively on MR. Therefore, both birds and rodents are of importance for the survival strategy of A. tigrinum subadults. The plasticity of A. tigrinum to colonize areas with different climates plus the capacity of their subadults to feed on hosts widely distributed indicates that this tick has the potential to become a widespread parasite but this does not seem to be the actual situation. Several proposals are presented to further understand its ecology.
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Affiliation(s)
- S Nava
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, CC 22, CP 2300 Rafaela, Santa Fe, Argentina
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16
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Aguirre DH, Mangold AJ, Cafrune MM, Guglielmone AA. Amblyomma tigrinum (Acari: Ixodidae): New data on hosts and biology of immature stages and on DNA composition. Vet Parasitol 2005; 134:267-72. [PMID: 16143451 DOI: 10.1016/j.vetpar.2005.07.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2005] [Revised: 07/21/2005] [Accepted: 07/25/2005] [Indexed: 11/17/2022]
Abstract
Biological data of immature stages of Amblyomma tigrinum were obtained from larvae and nymphs both fed on rats and rabbits. Data from nymphs recovered from a wild rodent (Galea musteloides) are also reported. Additional results in DNA composition of males moulted from nymphs fed on laboratory and wild hosts are presented. The ticks were maintained in darkness at 27 +/- 1 degrees C and 83-86% RH. The mean recovery rates were 49.1% and 43.6% with a moulting success of 96.2% and 90.8% in larvae fed on rats and rabbits, respectively. The engorgement weights were almost identical in larvae recovered from both hosts. The mean recovery rates of nymphs were 37.3% and 69.9% in specimens fed on rats and rabbits, respectively. The moulting success was 94.5%, 100% and 98.1% in nymphs fed on rats, rabbits and G. musteloides, respectively. Nymphs from all hosts moulting to females were significantly heavier (P < 0.01) than those moulting to males despite their range of engorgement weight showed overlap. A higher proportion (>or=61.5%) of nymphs from all hosts moulted to females. Present results suggest that members of Rodentia and Lagomorpha are suitable hosts for the immature stages of A. tigrinum, contrasting with previous results from Brazilian colonies of this tick. The DNA sequence from ticks fed on G. musteloides showed 99.7% identity with that from ticks fed on rabbits and also with the DNA sequence already available (GenBank AY498562 ) for A. tigrinum.
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Affiliation(s)
- D H Aguirre
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Salta, CC 228, CP 4400 Salta, Argentina.
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Estrada-Peña A, Venzal JM, Mangold AJ, Cafrune MM, Guglielmone AA. The Amblyomma maculatum Koch, 1844 (Acari: Ixodidae: Amblyomminae) tick group: diagnostic characters, description of the larva of A. parvitarsum Neumann, 1901, 16S rDNA sequences, distribution and hosts. Syst Parasitol 2005; 60:99-112. [PMID: 15841347 DOI: 10.1007/s11230-004-1382-9] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2004] [Indexed: 10/25/2022]
Abstract
A review of the largely confused Amblyomma maculatum Koch, 1844 tick group of the subgenus Anastosiella Santos Dias, 1963 (A. neumanni Ribaga, 1902, A. maculatum, A. parvitarsum Neumann, 1901, A. tigrinum Koch, 1844 and A. triste Koch, 1844) is presented together with a discussion of the diagnostic characters used for the determination of adults, nymphs and, to a lesser extent, larvae. A key for this tick group is produced, including the description of the larva of A. parvitarsum, 1901. Sequences of 16S rDNA are obtained and compared with other Amblyomma spp., including two other species currently in Anastosiella but in the ovaletick group, A. ovale Koch, 1844 and A. aureolatum (Pallas, 1772). According to the morphology and the rDNA sequences, the maculatum group is reduced to A. maculatum (Neotropical-Nearctic), A. tigrinum (Neotropical) and A. triste (Neotropical) A. neumanni and A. parvitarsum are excluded from the subgenus. The distribution is sympatric in northern South America from where A. maculatumreaches the southern Nearctic and the range of A. tigrinum extends to the southern Neotropics. These species have been found on several domestic and wild vertebrates. A. triste and A. tigrinum have been also found on man. Their role as vectors of pathogens deserves further investigation.
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Affiliation(s)
- Agustín Estrada-Peña
- Unidad de Parasitología, Facultad de Veterinaria, Miguel Servet 177, 50013-Zaragoza, Spain
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18
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González-Acuña D, Guglielmone AA. Ticks (Acari: Ixodoidea: Argasidae, Ixodidae) of Chile. EXPERIMENTAL & APPLIED ACAROLOGY 2005; 35:147-163. [PMID: 15777007 DOI: 10.1007/s10493-004-1988-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The tick species recorded from Chile can be listed under the following headings: (1) endemic or established: Argas keiransi Estrada-Peña, Venzal and Gonzalez-Acuña, A. neghmei Kohls and Hoogstraal; Ornithodoros amblus Chamberlin; Otobius megnini (Dugès); Amblyomma parvitarsum Neumann; A. tigrinum Koch; Ixodes auritulus Neumann; I. chilensis Kohls; I. cornuae Arthur, I. sigelos Keirans, Clifford and Corwin; I. stilesi Neumann; I. uriae White; Rhipicephalus sanguineus Koch. (2) Probably established or endemic: Argas miniatus Koch; Ornithodoros spheniscus Hoogstraal, Wassef, Hays and Keirans; Ixodes abrocomae Lahille; I. neuquenensis Ringuelet; I. pararicinus Keirans and Clifford. (3) Doubtfully established: Argas reflexus Fabricius; Ornithodoros talaje (Guérin-Méneville). (4) Exotic: Amblyomma argentinae Neumann; A. latum Koch, Rhipicephalus (= Boophilus) microplus (Canestrini). (5) Erroneously identified as present in Chile: Amblyomma americanum (Linnaeus); A. maculatum Koch; A. varium Koch; Ixodes conepati Cooley and Kohls; I. frontalis (Panzer); I. ricinus (Linnaeus); Margaropus winthemi Karsch. (6) Nomina nuda: Argas reticulatus Gervais; Amblyomma inflatum Neumann; Ixodes lagotis Gervais. Hosts and localities (including new records) are presented. Argas neghmei, O. amblus, O. megnini, I. uriae and R. sanguineus may cause severe injury to their hosts, including humans. The Chilean Ixodes fauna is unique to the Neotropical Zoogeographic Region, and additional research is needed in order to understand the biological importance of these species.
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Affiliation(s)
- Daniel González-Acuña
- Facultad de Medicina Veterinaria, Universidad de Concepción, Casilla 537, Chillán, Chile.
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Labruna MB, de Paula CD, Lima TF, Sana DA. Ticks (Acari: Ixodidae) on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil. Mem Inst Oswaldo Cruz 2002; 97:1133-6. [PMID: 12563479 DOI: 10.1590/s0074-02762002000800012] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paran river, between the states of S o Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species), Boophilus (1) and Anocentor (1). A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages) collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.
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Affiliation(s)
- Marcelo B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, 05508-000 São Paulo, SP, Brasil.
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