Microclimate influence in a physiological model of cattle-fever tick (Boophilus spp.) population dynamics

Corson, Michael S.; Teel, Pete D.; Grant, William E.

doi:10.1016/j.ecolmodel.2004.04.034

Cited by 52 publications

(54 citation statements)

References 45 publications

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“…Because R. microplus is a one-host tick, the occurrence of large populations is limited only by an adequate range of temperatures and available water, provided that bovine hosts are abundant [49,50]. Robust simulations have provided adequate data to understand the dynamics of the tick in pastures and how management strategies may affect such phenology [51,52]. However, problems in insuring that the U.S. cattle industry remains protected against fever ticks and babesiosis also include the presence of acaricide-resistant R. microplus in Mexico, changes in plant communities that improve tick habitat, and an abundance of alternative hosts [53,54].…”

Section: Eradication Of the Cattle Ticks Rhipicephalus (Boophilus) Spmentioning

confidence: 99%

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Estrada-Peña

Salman

2013

Agriculture

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Ticks are well-known parasites that affect livestock productivity. This paper reviews the current knowledge regarding the spread of ticks with their impact in animal health and the limitations to achieve effective control measures. The forecasted trends in climate play an obvious role in promoting the spread of ticks in several regions. It appears that climate warming is pivotal in the spread and colonization of new territories by Rhipicephalus microplus in several regions of Africa. The reported increase in altitude of this tick species in the mountainous regions of Central and South America appears to be driven by such general trends in climate change. This factor, however, is not the only single contributor to the spread of ticks. The poor management of farms, uncontrolled movements of domestic animals, abundance of wild animals, and absence of an adequate framework to capture the ecological plasticity of certain ticks may explain the complexity of the control measures. In this paper, we review several details regarding the relationships of ticks with the environment, wild fauna and competition with other species of ticks. Our intention is to highlight these relationships with the aim to produce a coherent framework to explore tick ecology and its relationship with animal production systems.

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Section: Eradication Of the Cattle Ticks Rhipicephalus (Boophilus) Spmentioning

confidence: 99%

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Estrada-Peña

Salman

2013

Agriculture

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“…The major pest of cattle worldwide is the cattle tick Rhipicephalus microplus, transmitting Babesia bigemina, B. bovis and Anaplasma marginale. The related economic losses were deemed so high that in the USA this tick has been eradicated at huge expenses by long-term acaricide use and strict control of animal movement (Corson et al, 2004). Despite their efforts, other countries have not been able to eradicate R. microplus (De Castro, 1997Pegram et al, 2000.…”

Section: Introductionmentioning

confidence: 99%

Geographic distribution of the invasive cattle tick Rhipicephalus microplus, a country-wide survey in Benin

et al. 2012

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The cattle tick Rhipicephalus microplus is currently invading the West African region, and little information is available on the spread of this exotic tick in this region. We set out a country-wide field survey to determine its current distribution in Benin. Ticks were collected on cattle from 106 farms selected by random sampling covering all regions of the country. R. annulatus was found in 70 % of all farms, R. decoloratus was found in 42 %, R. geigyi was found on 58 %, and R. microplus was found on 49 % of all farms. There is a clear geographic separation between the indigenous R. species and R. microplus. R. annulatus occurs mainly in the northern departments, but it was also observed in smaller amounts in locations in the south. The presence of R. decoloratus is limited to the northern region, and in most locations, this tick makes up a small proportion of the collected ticks. The tick R. geigyi tends to be dominant, but occurs only in the four northern departments. The observations concerning R. microplus are entirely different, this species occurs in the southern and central region. The results of this survey confirm the invasive character and displacement properties of R. microplus, since in less than a decade it has colonized more than half of the country and has displaced indigenous ticks of the same genus in a large number of the sampled locations.

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“…(B.) microplus eggs (CORSON et al, 2004;SUTHERST;BOURNE, 2006). The western-central region of Rio Grande do Sul, Brazil, has a mean annual temperature of 19 °C and mean annual rainfall of between 1400-1800 mm (BECKER et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Rhipicephalus (Boophilus) microplus in the western-central region of Rio Grande do Sul, Brazil: multiresistant tick

Machado

Pivoto

Ferreira

et al. 2014

Rev. Bras. Parasitol. Vet.

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The aim of the present study was to assess the acaricide resistance of tick populations in the western-central region of Rio Grande do Sul (Brazil), which has not previously been reported. Fifty-four cattle farms were visited and specimens of Rhipicephalus (Boophilus) microplus were collected and subjected to the adult immersion test, using nine commercial acaricides in the amidine, pyrethroid and organophosphate groups. Climatic data, including monthly precipitation, were recorded. The results from the present study demonstrated that seven of the acaricides analyzed presented mean efficacy values of less than 95%, with large differences among the products tested. Nine of them exhibited satisfactory and unsatisfactory acaricide results on at least one farm. In conclusion, the farms located in the western-central region of Rio Grande do Sul, Brazil, exhibited populations of R. (Boophilus) microplus with variable degrees of susceptibility to different acaricides, thus suggesting that resistance to the active compounds exists. It is suggested that treatment protocols should be implemented at the beginning of winter and summer, using the acaricides that showed efficacy in the adult immersion test.Keywords: Rhipicephalus (Boophilus) microplus, climatic variation, acaricide resistance, efficacy test. ResumoO objetivo deste estudo foi o de aferir a situação da resistência dos produtos acaricidas utilizados no controle de carrapatos de bovinos, na mesorregião centro-ocidental rio-grandense. Para isso, cinquenta e quatro propriedades foram visitadas, e as teleóginas de Rhipicephalus (Boophilus) microplus foram coletadas e submetidas ao teste de eficácia acaricida in vitro, sendo utilizados nove produtos comerciais, pertencentes às classes químicas das amidinas, piretroides e organofosforados. Além disso, os dados das temperaturas máximas e mínimas médias e da precipitação acumulada foram compilados no período estudado. Os resultados demonstraram que sete produtos analisados apresentaram eficácia inferior a 95%, com grande disparidade dos resultados. Nove produtos testados apresentaram satisfatória e não satisfatória eficácia em pelo menos uma propriedade analisada. Neste contexto, concluiu-se que as propriedades da mesorregião centro-ocidental rio-grandense apresentam cepas de R. (B.) microplus com graus variáveis de susceptibilidade a diferentes acaricidas, sugerindo, assim, que a resistência aos princípios ativos existe. Sugere-se a adoção de protocolos de tratamento acaricida no início do inverno e do verão, com a escolha do produto a ser utilizado baseado nos resultados do teste de eficácia acaricida.Palavras-chave: Rhipicephalus (Boophilus) microplus, alterações climáticas, resistência acaricida, teste de eficácia.

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Microclimate influence in a physiological model of cattle-fever tick (Boophilus spp.) population dynamics

Cited by 52 publications

References 45 publications

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Geographic distribution of the invasive cattle tick Rhipicephalus microplus, a country-wide survey in Benin

Rhipicephalus (Boophilus) microplus in the western-central region of Rio Grande do Sul, Brazil: multiresistant tick

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