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Gomes DO, Ramos GB, Alves VBA, Ciuffa AZ, Cuccato LP, Dos Reis TFM, Lima AMC, Coelho MG, Tolesano-Pascoli GV, Rodrigues VS, Szabó MPJ, Ramos VN. Correction to: Occurrence of anti-Leptospira spp. antibodies in Rhipidomys spp. from a forest fragment of the Brazilian Cerrado. Trop Anim Health Prod 2019; 51:735. [PMID: 30617723 DOI: 10.1007/s11250-018-1770-9] [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] [Indexed: 10/27/2022]
Abstract
The original version of this article unfortunately contains an error. Vanessa do Nascimento Ramos was not included in the original article as one of the contributors. The name is now included in the authorgroup.
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Affiliation(s)
- D O Gomes
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil.
| | - G B Ramos
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - V B A Alves
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - A Z Ciuffa
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - L P Cuccato
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - T F M Dos Reis
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - A M C Lima
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - M G Coelho
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - G V Tolesano-Pascoli
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - V S Rodrigues
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - M P J Szabó
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, Uberlândia, State of Minas Gerais, 38.405-315, Brazil
| | - V N Ramos
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508-270, Brazil
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Gomes DO, Ramos GB, Alves VBA, Ciuffa AZ, Cuccato LP, Dos Reis TFM, Lima AMC, Gonçalves MC, Tolesano GV, Rodrigues VS, Szabó MPJ. Occurrence of anti-Leptospira spp. antibodies in Rhipidomys spp. from a forest fragment of the Brazilian Cerrado. Trop Anim Health Prod 2017; 49:555-559. [PMID: 28124730 DOI: 10.1007/s11250-017-1227-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 01/18/2017] [Indexed: 10/20/2022]
Abstract
Leptospirosis is a zoonotic disease of world importance, and its transmission depends on the interaction between humans and animals. Given the necessity to investigate potential hosts of Leptospira spp., this study verified the prevalence of different serovars in the species of Rhipidomys spp., a widespread sigmodont rodent in Brazil. The studied population originates from a semi-evergreen forest located in the county of Uberlândia, in the state of Minas Gerais. The microscopic agglutination test (MAT) was performed with 14 serovars. Thirteen out of the 43 wild rodents captured showed a positive agglutination reaction, with a greater prevalence of the serovars Pyrogenes, Copenhageni, and Canicola. This study found a prevalence of 30.3% anti-Leptospira spp. antibodies; all positive animals were reactive to more than one serovar.
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Affiliation(s)
- D O Gomes
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil.
| | - G B Ramos
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - V B A Alves
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - A Z Ciuffa
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - L P Cuccato
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - T F M Dos Reis
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - A M C Lima
- Laboratório de Doenças Infectocontagiosas, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - M C Gonçalves
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - G V Tolesano
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - V S Rodrigues
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
| | - M P J Szabó
- Laboratório de Ixodologia, Faculdade de Medicina Veterinária of the Universidade Federal de Uberlândia, Rua Ceará, Bloco 2D, Segundo andar, Sala 33, 38.405-315, Uberlândia, State of Minas Gerais, Brazil
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Queirogas VL, Del Claro K, Nascimento ART, Szabó MPJ. Capybaras and ticks in the urban areas of Uberlândia, Minas Gerais, Brazil: ecological aspects for the epidemiology of tick-borne diseases. Exp Appl Acarol 2012; 57:75-82. [PMID: 22349945 DOI: 10.1007/s10493-012-9533-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 02/05/2012] [Indexed: 05/31/2023]
Abstract
In Brazil capybara, the biggest existing rodent species, and associated tick species, Amblyomma cajennense and Amblyomma dubitatum, are undergoing an unplanned host and parasite population expansion in both urban and rural areas. However, scientific information about such issue, particularly in urban areas, is scanty. Such rodent and ticks are associated in some municipalities, particularly in southeastern Brazil, with the transmission of the highly lethal Rickettsia rickettsia caused spotted-fever. In this study ecological aspects related to the establishment and expansion of capybaras and ticks in urban areas of Uberlândia, Minas Gerais State, Brazil were evaluated. For this purpose, capybara and tick abundance in four urban areas and an ecological reserve was determined. Abundance of capybaras varied between areas and over the sampling period and these differences were related to human activities. A positive correlation was found between capybara and tick abundance, however, the tick species had an uneven distribution within the municipality and environmental factors rather than host availability were blamed for such. On the whole these observations show that capybara populations in urban areas are associated to high environmental infestation of ticks and the increased risk of bites and of pathogen transmission to humans. At the same time the uneven distribution of tick species might implicate in an unequal risk of tick-borne diseases within the same urban area.
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Affiliation(s)
- V L Queirogas
- Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
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Olegário MMM, Gerardi M, Tsuruta SA, Szabó MPJ. Life cycle of the tick Amblyomma parvum Aragão, 1908 (Acari: Ixodidae) and suitability of domestic hosts under laboratory conditions. Vet Parasitol 2011; 179:203-8. [PMID: 21353392 DOI: 10.1016/j.vetpar.2011.01.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 01/20/2011] [Accepted: 01/26/2011] [Indexed: 11/27/2022]
Abstract
Amblyomma parvum is a widespread Neotropical tick found on several domestic animals and is known to harbor a Rickettsia species of yet unknown pathogenicity. However its life cycle on, and suitability of, several of these hosts has not been described. In this work the biology of A. parvum is presented when fed on seven domestic hosts (chicken, dog, rabbit, horse, guinea pig, cattle and goat). The complete life cycle of the tick varied from 96.8 to 102 days. Highest engorgement weight of larvae was from ticks fed on horses and that of nymphs from guinea pigs. Highest larval yield was from guinea pigs and that of nymphs from horses. Engorged female and egg mass weights, yield and conversion of female weight to eggs rates were the highest in dog ticks and the lowest in goat ticks. The highest egg hatching rate was seen in ticks from dogs and the lowest in ticks from cattle. Overall it was seen that dogs were the best host for adult A. parvum ticks, and guinea pigs for immatures. Horses were also shown to be a good host for all tick stages. It can thus be affirmed that A. parvum is a host generalist tick, and its distribution is probably determined by environmental requirements rather than by hosts.
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Affiliation(s)
- M M M Olegário
- Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, Av. Pará, 1720, Campus Umuarama-Bloco 2T, Uberlândia, MG CEP 38400-902, Brazil
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Szabó MPJ, de Souza LGA, Olegário MMM, Ferreira FA, de Albuquerque Pajuaba Neto A. Ticks (Acari: Ixodidae) on dogs from Uberlândia, Minas Gerais, Brazil. Transbound Emerg Dis 2010; 57:72-4. [PMID: 20537111 DOI: 10.1111/j.1865-1682.2010.01111.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [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
Uberlândia in Minas Gerais State, southeastern Brazil, has 622 000 inhabitants and is located in the Cerrado biome, the South American savannah. The city dog population is estimated at 82 000 and identification of tick species and infestation prevalence on this host has not been determined. A major infectious disease of dogs in the city, canine ehrlichiosis, is transmitted by Rhipicephalus sanguineus ticks. At the same time, autochthonous leishmaniosis has been recently described in the city and a role for dog ticks in the disease transmission has been supposed in Brazil. In this work, we present general information on dog ticks in Uberlândia municipality and region. Dogs from 33 farms and 31 districts were examined for ticks from July 2007 to February 2009. On the whole, 413 dogs were examined, 311 (75.3%) from the city and 102 (24.6%) from rural area. Overall infestation rate of dogs from Uberlândia was 37.3% and the mean infestation intensity was 3.25 parasites per dog. In the urban area, 100 dogs (32.2%) had ticks whereas 54 dogs (52.9%) from rural areas were infested. Four tick species were found: Rhipicephalus sanguineus, Amblyomma cajennense, Amblyomma ovale and Boophilus microplus. In the city, only R. sanguineus and one A. cajennense was found on dogs and R. sanguineus and A. ovale were the main dog ticks in rural areas.
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Affiliation(s)
- M P J Szabó
- Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, Uberlândia, MG, Brazil.
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Szabó MPJ, Pereira LDF, Castro MB, Garcia MV, Sanches GS, Labruna MB. Biology and life cycle of Amblyomma incisum (Acari: Ixodidae). Exp Appl Acarol 2009; 48:263-271. [PMID: 19130270 DOI: 10.1007/s10493-008-9234-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 12/30/2008] [Indexed: 05/27/2023]
Abstract
Amblyomma incisum Neumann is a major tick species in the Atlantic Forest of Brazil. Tapir is the main host for adult ticks and a high aggressiveness of nymphs to humans has been reported. In this work data on the biology and life cycle of this tick species is presented for the first time. It was shown that horse is a suitable host for A. incisum adults and rabbit for larvae and nymphs. It was also shown that A. incisum is a big tick species (mean engorged female weight of 1.96 g) with a long life cycle which lasts 262.3 days when maintained at 27 degrees C and 85% RH. These laboratory conditions were, however, inappropriate and egg hatching rate (1.2%) was very low. Nevertheless egg hatching of ticks in a forest patch increased considerably (72.2%) indicating that this A. incisum population is highly dependent on a forest-like environment.
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Affiliation(s)
- Matias Pablo J Szabó
- Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, Av. Pará, 1720, Campus Umuarama-Bloco 2T, Uberlândia, MG, CEP 38400-902, Brazil.
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Szabó MPJ, Labruna MB, Garcia MV, Pinter A, Castagnolli KC, Pacheco RC, Castro MB, Veronez VA, Magalhães GM, Vogliotti A, Duarte JMB. Ecological aspects of the free-living ticks (Acari: Ixodidae) on animal trails within Atlantic rainforest in south-eastern Brazil. Ann Trop Med Parasitol 2009; 103:57-72. [PMID: 19173777 DOI: 10.1179/136485909x384956] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
In a recent ecological study of the ticks on animal trails within an area of Atlantic rainforest in south-eastern Brazil, Amblyomma aureolatum, A. brasiliense, A. incisum, A. ovale and Haemaphysalis juxtakochi were found questing on the vegetation. Most of the ticks recorded by a small, man-made dam on the forest border were A. dubitatum but a few A. brasiliense and A. cajennense, one A. incisum and one H. juxtakochi were also found. The seasonal activity of the ticks indicated that A. incisum and A. brasiliense had one generation/year. On the animal trails, most tick species and stages quested on the vegetation at a height of 30-40 cm above ground level. The questing larvae and adults of A. incisum tended to be found higher, however, with the greatest numbers recorded 40-50 cm (larvae) or 60-70 cm (adults) above ground level. Most of the adult ticks (81.1%-100%), nymphs (78.6%-100%) and larval clusters (100%) found on a forest trail remained questing at the same location over a 24-h period. Carbon-dioxide traps in the rainforest attracted <50% of the ticks observed questing on the nearby vegetation and, curiously, the CO2 traps set deep in the forest attracted far fewer ticks than similar traps set by the dam. The ecological relationships between the ticks, their hosts and the rainforest environment are discussed.
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Affiliation(s)
- M P J Szabó
- Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, Avenida Pará, 1720, Campus Umuarama - Bloco 2T, Uberlândia, MG, 38400-902, Brazil
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Nava S, Szabó MPJ, Mangold AJ, Guglielmone AA. Distribution, hosts, 16S rDNA sequences and phylogenetic position of the Neotropical tick Amblyomma parvum (Acari: Ixodidae). Ann Trop Med Parasitol 2008; 102:409-25. [PMID: 18577332 DOI: 10.1179/136485908x278883] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The hosts, distribution, intraspecific genetic variation and phylogenetic position of Amblyomma parvum (Acari: Ixodidae) have recently been re-assessed. Data on this tick's hosts and distribution were obtained not only from existing literature but also from unpublished records. Sequences of the ticks' mitochondrial 16S ribosomal DNA (rDNA) were used to evaluate genetic variation among specimens of A. parvum from different localities in Argentina and Brazil, and to explore the phylogenetic relationships between this tick and other Amblyomma species. Although several species of domestic and wild mammal act as hosts for adult A. parvum, most collected adults of this species have come from cattle and goats. Caviid rodents of the subfamily Caviinae appear to be the hosts for the immature stages. So far, A. parvum has been detected in 12 Neotropical biogeographical provinces (Chaco, Cerrado, Eastern Central America, Venezuelan Coast, Pantanal, Parana Forest, Caatinga, Chiapas, Venezuelan Llanos, Monte, Western Panamanian Isthmus, and Roraima) but the Chaco province has provided significantly more specimens than any other (P<0.0001). The 16S rDNA sequences showed just 0.0%-1.1% divergence among the Argentinean A. parvum investigated and no more than 0.2% divergence among the Brazilian specimens. The observed divergence between the Argentinean and Brazilian specimens was, however, greater (3.0%-3.7%). Although there is now molecular and morphological evidence to indicate that A. parvum, A. pseudoparvum, A. auricularium and A. pseudoconcolor are members of a natural group, previous subgeneric classifications do not reflect this grouping. The subgeneric status of these tick species therefore needs to be re-evaluated. The 16S-rDNA-based evaluation of divergence indicates that the gene flow between Argentinean and Brazilian 'A. parvum' is very limited and that the Argentinean 'A. parvum' may be a different species to the Brazilian.
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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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Machado RZ, Duarte JMB, Dagnone AS, Szabó MPJ. Detection of Ehrlichia chaffeensis in Brazilian marsh deer (Blastocerus dichotomus). Vet Parasitol 2006; 139:262-6. [PMID: 16621285 DOI: 10.1016/j.vetpar.2006.02.038] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2005] [Revised: 01/26/2006] [Accepted: 02/24/2006] [Indexed: 11/22/2022]
Abstract
Ehrlichia chaffeensis was detected for the first time in blood samples from Brazilian marsh deers (Blastocerus dichotomus) captured in the marshes of Parana River in Southeast Brazil in 1998. Seven EDTA-blood samples from deers were analyzed by PCR and nested PCR for presence of Ehrlichia chaffeensis, Ehrlichia ewingii, Ehrlichia canis, Neoriickettsia risticii, Anaplasma phagocytophilum and Anaplasma marginale. Three samples showed positive reactions for E. chaffeensis and Anaplasma marginale. None contained detectable A. phagocytophilum, E. ewingii, E. canis or Neorickettsia risticii DNA. In Brazil, the wild marsh deer may be a natural reservoir of the agents that cause human monocytotropic ehrlichiosis and ruminant erythrocytic anaplasmosis.
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Affiliation(s)
- Rosangela Zacarias Machado
- Universidade Estadual Paulista, UNESP-Campus de Jaboticabal, Departamento de Patologia Veterinária, FCAV/UNESP-Rodovia de Acesso Paulo Donato Castellane, s/n - Jaboticabal, SP, Brazil.
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Guglielmone AA, Beati L, Barros-Battesti DM, Labruna MB, Nava S, Venzal JM, Mangold AJ, Szabó MPJ, Martins JR, González-Acuña D, Estrada-Peña A. Ticks (Ixodidae) on humans in South America. Exp Appl Acarol 2006; 40:83-100. [PMID: 17103085 DOI: 10.1007/s10493-006-9027-0] [Citation(s) in RCA: 221] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2006] [Accepted: 08/08/2006] [Indexed: 05/12/2023]
Abstract
Twenty eight species of Ixodidae have been found on man in South America (21 Amblyomma, 1 Boophilus, 2 Dermacentor, 2 Haemaphysalis, 1 Ixodes and 1 Rhipicephalus species). Most of them are rarely found on man. However, three species frequently parasitize humans in restricted areas of Argentina (A. neumanni reported from 46 localities), Uruguay (A. triste from 21 sites) and Argentina-Brazil (A. parvum from 27 localities). The most widespread ticks are A. cajennense (134 localities in Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Suriname and Venezuela), A. ovale (37 localities in Argentina, Brazil, Ecuador, French Guiana, Guyana, Paraguay, Suriname and Venezuela) and A. oblongoguttatum (28 sites in Brazil, Colombia, French Guiana, Guyana, Suriname and Venezuela). Amblyomma aureolatum (18 localities in Argentina, Brazil, French Guiana and Paraguay), A. cajennense, and A. triste are vectors of rickettsioses to man in South America. A better understanding of the respective roles of these and other tick species in transmitting pathogens to humans will require further local investigations. Amblyomma ticks should be the main subjects of these studies followed by species of Boophilus, Dermacentor, Haemaphysalis and Rhipicephalus species. In contrast with North America, Europe and Asia, ticks of the genus Ixodes do not appear to be major players in transmitting diseases to human. Indeed, there is only one record of an Ixodes collected while feeding on man for all South America.
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Affiliation(s)
- A A Guglielmone
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, CC 22, CP 2300, Rafaela, Santa Fe, Argentina.
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Lima e Silva MF, Szabó MPJ, Bechara GH. Microscopic features of tick-bite lesions in anteaters and armadillos: Emas National Park and the Pantanal region of Brazil. Ann N Y Acad Sci 2005; 1026:235-41. [PMID: 15604499 DOI: 10.1196/annals.1307.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The naturally occurring wildlife host associations between ticks and tick-borne pathogens found in the neotropics are poorly described. Understanding tick-bite lesions is important as these are the site of host reaction to and pathogen delivery by ticks. As part of a comprehensive study concerning established and emerging tick-host relationships. the present work describes some aspects of tick-bite lesions in anteaters and armadillos captured at the Emas National Park and the Pantanal region of Brazil. Biopsies were of skin were taken and examine. Tick feeding sites of all animals displayed an eosinophilic homogeneous mass, the cement cone, and, occasionally, a feeding cavity underneath the tick attachment site. At these locations the epidermis was usually thickened due to keratinocyte hyperplasia. The main dermal changes included tissue infiltration with a varying number of inflammatory cells, edema, hemorrhage. and vascular dilatation. Cellular infiltration of the dermis was predominantly composed of mononuclear cells, neutrophils. and eosinophils. Mast cells were also seen in both non-parasitized and parasitized skin but were found in higher numbers at perivascular sites and in parasitized skin. Basophils were not seen at tick attachment sites of anteaters or armadillos.
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Affiliation(s)
- M F Lima e Silva
- Department of Animal Pathology, São Paulo State University-Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Jaboticabal-SP, Brazil.
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Affiliation(s)
- M B Castro
- Veterinary Pathology Diagnostic Service, University of Franca, Av Dr Armando Salles de Oliveira 201, CEP 14404-600, Franca, SP, Brazil
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