Seasonal dynamics of the Cayenne tick, Amblyomma cajennense on horses in Brazil.
Abstract: The population dynamics of all stages of the Cayenne tick, Amblyomma cajennense (Fabricius) (Acari: Ixodidae) on horses was evaluated over a period of 2 years in the district of Pedro Leopoldo, State of Minas Gerais, Brazil. Every 14 days, the left side of 20 horses was brushed for collection of immature stages; counts of adults were also undertaken. Infestation by larvae was detected from April to August, whereas nymphs were observed from June to October. Infestation by adults was detected throughout the year, and the highest population density occurred from September to March. The number of males was always higher than the number of females, but with considerable reduction in the male : female ratio between April and July. It was observed that 25% of the horses carried 41% of the infesting ticks, and 20% carried only 10% of the ticks during the entire period of the study.
Publication Date: 2003-12-04 PubMed ID: 14651655DOI: 10.1111/j.1365-2915.2003.00459.xGoogle Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This study observed the population patterns of the Cayenne tick (Amblyomma cajennense) on horses in Brazil over a two-year period, determining the presence of different life stages at various times of the year, and the distribution of tick infestation among horses.
Tick Species and Life Stages
- The species under study is the Cayenne tick (Amblyomma cajennense), a type of arachnid from the Ixodidae family.
- The researchers observed all life stages of the tick: larvae (young ticks), nymphs (teenage ticks), and adults.
Study Duration and Methodology
- The research spanned a duration of two years.
- Every two weeks, the researchers collected ticks from the left side of 20 horses by brushing the animals.
Observations of Tick Infestation Patterns
- Larval infestations were detected from April to August.
- Nymphs were present from June to October.
- Adult tick infestation appeared to be a year-round problem, but the population peaked from September to March.
Gender Ratio and Distribution of Tick Infestation
- The research noted that the number of male ticks was consistently higher than the number of female ticks.
- Interestingly, there was a marked decrease in the male-to-female ratio from April to July.
- In terms of the distribution of tick infestation on horses, 25% of the horses were found to carry about 41% of the ticks.
- On the other end of the spectrum, 20% of the horses carried only 10% of the total tick population.
Study Implications
- The temporal patterns of tick infestation detected in this study could prove useful for predicting tick population dynamics and managing their control in the region.
- The skewed distribution of tick infestation on certain horses could suggest genetic or environmental factors influencing the susceptibility of hosts to tick infestation.
Cite This Article
APA
Oliveira PR, Borges LM, Leite RC, Freitas CM.
(2003).
Seasonal dynamics of the Cayenne tick, Amblyomma cajennense on horses in Brazil.
Med Vet Entomol, 17(4), 412-416.
https://doi.org/10.1111/j.1365-2915.2003.00459.x Publication
Researcher Affiliations
- Escola de Veterinária da Universidade Federal de Minas Gerais, Brazil. proliver@vet.ufmg.br
MeSH Terms
- Animals
- Brazil
- Female
- Horse Diseases / epidemiology
- Horse Diseases / parasitology
- Horses
- Ixodidae / growth & development
- Ixodidae / physiology
- Larva
- Male
- Nymph
- Population Density
- Population Dynamics
- Seasons
- Sex Factors
- Tick Infestations / epidemiology
- Tick Infestations / parasitology
- Tick Infestations / veterinary
Citations
This article has been cited 12 times.- de Paula LGF, do Nascimento RM, Franco AO, Szabó MPJ, Labruna MB, Monteiro C, Krawczak FDS. Seasonal dynamics of Amblyomma sculptum: a review.. Parasit Vectors 2022 Jun 6;15(1):193.
- Forero-Becerra E, Acosta A, Benavides E, Martínez-Díaz HC, Hidalgo M. Amblyomma mixtum free-living stages: Inferences on dry and wet seasons use, preference, and niche width in an agroecosystem (Yopal, Casanare, Colombia).. PLoS One 2022;17(4):e0245109.
- Perles L, Martins TF, Barreto WTG, Carvalho de Macedo G, Herrera HM, Mathias LA, Labruna MB, Barros-Battesti DM, Machado RZ, André MR. Diversity and Seasonal Dynamics of Ticks on Ring-Tailed Coatis Nasua nasua (Carnivora: Procyonidae) in Two Urban Areas from Midwestern Brazil.. Animals (Basel) 2022 Jan 25;12(3).
- de Paula LGF, Zeringóta V, Sampaio ALN, Bezerra GP, Barreto ALG, Dos Santos AA, Miranda VC, Paula WVF, Neves LC, Secchis MV, Alves SDGA, Sevá ADP, Borges LMF, Monteiro C, Dantas-Torres F, Krawczak FDS. Seasonal dynamics of Amblyomma sculptum in two areas of the Cerrado biome midwestern Brazil, where human cases of rickettsiosis have been reported.. Exp Appl Acarol 2021 May;84(1):215-225.
- Costa GCA, Ribeiro ICT, Melo-Junior O, Gontijo NF, Sant'Anna MRV, Pereira MH, Pessoa GCD, Koerich LB, Oliveira F, Valenzuela JG, Giunchetti RC, Fujiwara RT, Bartholomeu DC, Araujo RN. Amblyomma sculptum Salivary Protease Inhibitors as Potential Anti-Tick Vaccines.. Front Immunol 2020;11:611104.
- Gillingham EL, Cull B, Pietzsch ME, Phipps LP, Medlock JM, Hansford K. The Unexpected Holiday Souvenir: The Public Health Risk to UK Travellers from Ticks Acquired Overseas.. Int J Environ Res Public Health 2020 Oct 29;17(21).
- Santodomingo A, Sierra-Orozco K, Cotes-Perdomo A, Castro LR. Molecular detection of Rickettsia spp., Anaplasma platys and Theileria equi in ticks collected from horses in Tayrona National Park, Colombia.. Exp Appl Acarol 2019 Mar;77(3):411-423.
- Esteves E, Maruyama SR, Kawahara R, Fujita A, Martins LA, Righi AA, Costa FB, Palmisano G, Labruna MB, Sá-Nunes A, Ribeiro JMC, Fogaça AC. Analysis of the Salivary Gland Transcriptome of Unfed and Partially Fed Amblyomma sculptum Ticks and Descriptive Proteome of the Saliva.. Front Cell Infect Microbiol 2017;7:476.
- Debárbora VN, Mangold AJ, Oscherov EB, Guglielmone AA, Nava S. Study of the life cycle of Amblyomma dubitatum (Acari: Ixodidae) based on field and laboratory data.. Exp Appl Acarol 2014 May;63(1):93-105.
- Szabó MP, Pinter A, Labruna MB. Ecology, biology and distribution of spotted-fever tick vectors in Brazil.. Front Cell Infect Microbiol 2013;3:27.
- Peckle M, Pires MS, Dos Santos TM, Roier EC, da Silva CB, Vilela JA, Santos HA, Massard CL. Molecular epidemiology of Theileria equi in horses and their association with possible tick vectors in the state of Rio de Janeiro, Brazil.. Parasitol Res 2013 May;112(5):2017-25.
- Zheng H, Yu Z, Chen Z, Zhou L, Zheng B, Ma H, Liu J. Development and biological characteristics of Haemaphysalis longicornis (Acari: Ixodidae) under field conditions.. Exp Appl Acarol 2011 Apr;53(4):377-88.
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