Rhipicephalus(Boophilus) microplus resistant to acaricides and ivermectin in cattle farms of Mexico

Rodríguez-Vivas, Róger Iván; Pérez-Cogollo, Luis Carlos; Rosado-Aguilar, José Alberto; Ojeda-Chí, Melina Maribel; Trinidad-Martínez, Iris; Miller, Robert J.; Li, Andrew Yongsheng; León, Adalberto Pérez de; Guerrero, Felix D.; Klafke, Guilherme Marcondes

doi:10.1590/s1984-29612014044

Cited by 84 publications

(47 citation statements)

References 70 publications

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“…The indiscriminate use of these chemicals has resulted in the development of resistance in populations of internal and external parasites of cattle, which impacts the livestock industry in Mexico (82)(83)(84)(85)(86)(87) .…”

Section: Parasiticide Resistancementioning

confidence: 99%

“…Resistance to conventional acaricides and macrocyclic lactones, including organophosphates (OPs), pyrethroids (SPs), amitraz, fipronil, and ivermectin among cattle fever tick populations has been identified as one of the most common problems in cattle from Mexico (83,87) . Resistance to OPs first developed in the 1980s in Mexico, and resistance to SPs emerged in the 1990s.…”

Section: Parasiticide Resistancementioning

confidence: 99%

“…The presence of R. microplus populations resistant to ivermectin has been documented in the states of Yucatan and Veracruz where resistance prevalence ranges from 41 to 100 %, with most of the resistance level categorized as low. Resistance to multiple classes of antiparasitic drugs, including OPs, SPs, amitraz and ivermectin, appears to be an emerging problem among R. microplus populations in Mexico (83) .…”

Section: Parasiticide Resistancementioning

confidence: 99%

“…Antiparasitic resistance in endoand ectoparasite populations affecting the health and productivity of cattle in Mexico increases the cost of parasite control and decreases the profitability of livestock producers. The use of commercial antiparasitic drugs to control endo-and ectoparasites in cattle is expected to continue increasing in Mexico due primarily to: availability and ease of use for endectocidal products, increasingly accessible prices especially for generic versions of macrocyclic lactones, and a dearth of products containing active ingredients with new modes of action (83) . Studies assessing the actual economic impact of parasiticide resistance on the profitability of cattle producers in Mexico are needed.…”

Section: Parasiticide Resistancementioning

confidence: 99%

“…Studies assessing the actual economic impact of parasiticide resistance on the profitability of cattle producers in Mexico are needed. The establishment of integrated parasite control programs adapted to each of the four main agroecological regions could reduce the impact of endo-and ectoparasites on the health and productivity of the national cattle herd (83) . An adaptive and sustainable approach will help mitigate the burden of diseases caused by the six major endo-and ectoparasites considered here, which was estimated to cost the cattle industry of Mexico US$ 1.41 billion annually and a yearly loss per head of US$ 43.57.…”

Section: Parasiticide Resistancementioning

confidence: 99%

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Potential economic impact assessment for cattle parasites in Mexico. Review

Rodríguez-Vivas

Grisi

León

et al. 2017

Rev. Mex. Cienc. Pecu.

152

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Here, economic losses caused by cattle parasites in Mexico were estimated on an annual basis. The main factors taken into consideration for this assessment included the total number of animals at risk, potential detrimental effects of parasitism on milk production or weight gain, and records of condemnation on livestock byproducts. Estimates in US dollars (US$) were based on reported yield losses in untreated animals. These estimates reflect the major effects on cattle productivity of six parasites, or RESUMENLas pérdidas económicas causadas por parásitos del bovino en México se calcularon anualmente. Los principales factores considerados para esta evaluación incluyeron el número total de animales a riesgo, los posibles efectos dañinos del parasitismo sobre la producción de leche o ganancia de peso, y los decomisos de subproductos pecuarios. Las pérdidas económicas fueron estimadas en dólares americanos (US$) y se basaron en las pérdidas del rendimiento productivo de animales no tratados. Estas estimaciones reflejan los principales efectos de seis parásitos o grupos de parásitos sobre la producción bovina. El impacto económico potencial (millones de dólares) fue: nematodos gastrointestinales US$ 445.10; coccidias (Eim eria spp.) US$ 23.78; duelas del hígado (Fasciola hepatica) US$ 130.91; garrapatas (Rhipicephalus m icroplus) US$ 573.61; mosca de los cuernos (Haem atobia irritans) US$ 231.67; y mosca de los establos (Stom ox ys calcitrans) US$ 6.79. En general, las pérdidas anuales causadas por los seis principales parásitos del bovino en México se estimaron en US$ 1.41 mil millones. Considerando que la población bovina nacional en 2013 fue de 32.40 millones de bovinos, la pérdida anual estimada fue de US$ 43.57 por animal. Se hace mención de las limitaciones que tienen el uso de algunas referencias para las estimaciones, particularmente cuando se extrapolan situaciones locales a una escala nacional. Sin embargo, el resultado general obtenido en este estudio demuestra la magnitud e importancia del parasitismo en el ganado de México y los desafíos para maximizar la rentabilidad de la industria ganadera sin recurrir al uso de estrategias de control integrado sustentable de parásitos.

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Section: Parasiticide Resistancementioning

confidence: 99%

Section: Parasiticide Resistancementioning

confidence: 99%

Section: Parasiticide Resistancementioning

confidence: 99%

Section: Parasiticide Resistancementioning

confidence: 99%

Section: Parasiticide Resistancementioning

confidence: 99%

See 3 more Smart Citations

Potential economic impact assessment for cattle parasites in Mexico. Review

Rodríguez-Vivas

Grisi

León

et al. 2017

Rev. Mex. Cienc. Pecu.

152

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Translating Ecology, Physiology, Biochemistry, and Population Genetics Research to Meet the Challenge of Tick and Tick‐borne Diseases in North America

Esteve-Gassent

Castro-Arellano

Feria-Arroyo

et al. 2016

Arch Insect Biochem Physiol

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Emerging and re-emerging tick-borne diseases threaten public health and the wellbeing of domestic animals and wildlife globally. The adoption of an evolutionary ecology framework aimed to diminish the impact of tick-borne diseases needs to be part of strategies to protect human and animal populations. We present a review of current knowledge on the adaptation of ticks to their environment, and the impact that global change could have on their geographic distribution in North America. Environmental pressures will affect tick population genetics by selecting genotypes able to withstand new and changing environments and by altering the connectivity and isolation of several tick populations. Research in these areas is particularly lacking in the southern US and most of Mexico with knowledge gaps on the ecology of these diseases, including a void in the identity of reservoir hosts for several tick-borne pathogens. Additionally, the way in which anthropogenic changes to landscapes may influence tick-borne disease ecology remains to be fully understood. Enhanced knowledge in these areas is needed in order to implement effective and sustainable integrated tick management strategies. We propose to refocus ecology studies with emphasis on metacommunity-based approaches to enable a holistic perspective addressing whole pathogen and host assemblages. Network analyses could be used to develop mechanistic models involving multi host-pathogen communities. An increase in our understanding of the ecology of tick-borne diseases across their geographic distribution will aid in the design of effective area-wide tick control strategies aimed to diminish the burden of pathogens transmitted by ticks.

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Acetylcholinesterase 1 in populations of organophosphate-resistant North American strains of the cattle tick, Rhipicephalus microplus (Acari: Ixodidae)

et al. 2015

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Rhipicephalus microplus, the cattle fever tick, is a global economic problem to the cattle industry due to direct infestation of cattle and pathogens transmitted during feeding. Cattle fever tick outbreaks continue to occur along the Mexico-US border even though the tick has been eradicated from the USA. The organophosphate (OP) coumaphos targets acetylcholinesterase (AChE) and is the approved acaricide for eradicating cattle fever tick outbreaks. There is evidence for coumaphos resistance developing in cattle ticks in Mexico, and OP-resistant R. microplus ticks were discovered in outbreak populations of Texas in 2005. The molecular basis of coumaphos resistance is not known, and our study was established to gather further information on whether AChE1 is involved in the resistance mechanism. We also sought information on allele diversity in tick populations with different levels of coumaphos resistance. The overarching project goal was to define OP resistance-associated gene mutations such that a DNA-based diagnostic assay could be developed to assist the management of resistance. Three different AChE transcripts have been reported in R. microplus, and supporting genomic and transcriptomic data are available at CattleTickBase. Here, we report the complete R. microplus AChE1 gene ascertained by sequencing a bacterial artificial chromosome clone containing the entire coding region and the flanking 5' and 3' regions. We also report AChE1 sequences of larval ticks from R. microplus strains having different sensitivities to OP. To accomplish this, we sequenced a 669-bp region of the AChE1 gene corresponding to a 223 amino acid region of exon 2 to assess alleles in seven strains of R. microplus with varying OP resistance phenotypes. We identified 72 AChE1 sequence variants, 2 of which are strongly associated with OP-resistant phenotypes. Esterase-like sequences from the R. microplus transcriptome RmiTr Version 1.0 were compared to the available sequence databases to identify other transcripts with similarity to AChE1.

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Rhipicephalus(Boophilus) microplus resistant to acaricides and ivermectin in cattle farms of Mexico

Cited by 84 publications

References 70 publications

Potential economic impact assessment for cattle parasites in Mexico. Review

Potential economic impact assessment for cattle parasites in Mexico. Review

Translating Ecology, Physiology, Biochemistry, and Population Genetics Research to Meet the Challenge of Tick and Tick‐borne Diseases in North America

Acetylcholinesterase 1 in populations of organophosphate-resistant North American strains of the cattle tick, Rhipicephalus microplus (Acari: Ixodidae)

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