Survey of acaricides resistance status of Rhipiciphalus (Boophilus) microplus collected from selected places of Bihar, an eastern state of India

Ghosh, Srikant; Kumar, Rinesh; Nagar, Gaurav; Kumar, Sachin; Sharma, Anil Kumar; Srivastava, Aman; Kumar, Suman; Kumar, Karapparambu Gopalan Ajith; Saravanan, B. C.

doi:10.1016/j.ttbdis.2015.05.013

Cited by 48 publications

(13 citation statements)

References 42 publications

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“…The availability of the cDNA sequences for susceptible or OP-insensitive AChEs allowed rapid identification of OP resistance mutations in AChEs responsible for OP insensitivity and development of rapid molecular assays to determine the presence of specific OP-resistant mutations. Four (HQ184947, HQ184946, HQ184944, HQ184943) novel amino acid substitutions were identified in the AChE2 gene of resistant field isolates collected from the state of Bihar, India (Ghosh et al 2015 ). Recently, Singh et al ( 2016 ) reported six point mutations in the gene AChE3 in strains of R. microplus from India (I48L, I54V, R86Q, V71A, I77M and S79P), in which the first three were previously associated to resistance against OPs in the Mexican San Roman strain (Temeyer et al 2007 ) and the other three were reported for the first time.…”

Section: Acaricide Resistance In Rhipicephalus Microplusmentioning

confidence: 99%

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance

2017

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Infestations with the cattle tick, Rhipicephalus microplus, constitute the most important ectoparasite problem for cattle production in tropical and subtropical regions worldwide, resulting in major economic losses. The control of R. microplus is mostly based on the use of conventional acaricides and macrocyclic lactones. However, the intensive use of such compounds has resulted in tick populations that exhibit resistance to all major acaricide chemical classes. Consequently, there is a need for the development of alternative approaches, possibly including the use of animal husbandry practices, synergized pesticides, rotation of acaricides, pesticide mixture formulations, manual removal of ticks, selection for host resistance, nutritional management, release of sterile male hybrids, environmental management, plant species that are unfavourable to ticks, pasture management, plant extracts, essential oils and vaccination. Integrated tick management consists of the systematic combination of at least two control technologies aiming to reduce selection pressure in favour of acaricide-resistant individuals, while maintaining adequate levels of animal production. The purpose of this paper is to present a current review on conventional acaricide and macrocyclic lactone resistance for better understanding and control of resistant ticks with particular emphasis on R. microplus on cattle.

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Section: Acaricide Resistance In Rhipicephalus Microplusmentioning

confidence: 99%

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance

2017

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“…microplus at only 11 of the 54 farms tested. Resistance to products containing a combination of SP and OP is also reported in other regions of Brazil (CAMPOS & OLIVEIRA, 2005;MENDES et al, 2007;ANDREOTTI et al, 2011) and worldwide (FERNÁNDEZ-SALAS et al, 2012;GHOSH et al, 2015;PUERTA et al, 2015). Frequent use of chemical treatments increases the chances of selecting for resistance among ticks, which is one of the main factors in establishing a resistant population of R.…”

Section: Resultsmentioning

confidence: 78%

“…The inefficacy of chemical products in tick control is a major challenge for the cattle industry, and resistance to the main classes of acaricides has been reported in several regions (FERNÁNDEZ-SALAS et al, 2012;RECK et al, 2014;GHOSH et al, 2015 on a historical failure of tick chemical control measures, and ticks were only taken from animals that had not received acaricides in the 30 days preceding collection.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of commercial synthetic pyrethroids and organophosphates associations used to control Rhipicephalus (Boophilus) microplus in Southern Brazil

Reginato

Cadore

Menezes

et al. 2017

Rev. Bras. Parasitol. Vet.

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This study evaluated the acaricidal efficiency of synthetic pyrethroids (SP) associated with organophosphates (OP) against Rhipicephalus (Boophilus) microplus populations in the state of Rio Grande do Sul, Southern Brazil. Ticks were collected in 54 cattle farms and tested using in vitro adult immersion test against four commercially available acaricide mixtures of SP and OP. Only one of four acaricides, comprising a mixture of cypermethrin, chlorpyrifos, and fenthion, had a mean efficiency higher than 95%, and was effective in 94.44% (51/54) of the cattle farms tested. The acaricide with a mixture of cypermethrin, chlorpyrifos, and citronelall had the lowest mean efficiency (62.11%), and was effective in 29.62% (16/54) of cattle farms tested. Furthermore, R. (B.) microplus in Southern Brazil exhibited differing degrees of resistance to SP and OP mixtures. The results suggest that the presence of fenthion contributes to the higher efficiency of the formulation with this active principle. This is possibly due to its recent commercial availability, as tick populations have been lower challenged with this product. Monitoring the resistance of ticks to carrapaticides is essential to maximize the efficiency of these products in the control of R. (B.) microplus.Keywords: Tick, cattle, chemical control, resistance, Boophilus. ResumoEste estudo avaliou a eficiência acaricida de piretroides sintéticos (SP) associados a organofosforados (OP) sobre populações de Rhipicephalus (Boophilus) microplus no estado do Rio Grande do Sul, Brasil. Carrapatos foram coletados em 54 fazendas de bovinos, testados in vitro pelo teste de imersão de teleóginas, contra quatro associações acaricidas comercialmente disponíveis de SP e OP. Apenas um dos quatro acaricidas, constituído por associação de cipermetrina, clorpirifós e fenthion, teve eficiência média superior a 95%, sendo eficaz em 94,44% (51/54) das fazendas testadas. O acaricida com associação de cipermetrina, clorpirifós e citronelal teve menor eficiência média (62,11%), sendo efetivo em 29,62% (16/54) das fazendas testadas. Além disso, o R. (B.) microplus no sul do Brasil, apresentou diferentes graus de resistência às associações de SP e OP. Os resultados sugerem que a presença do fenthion contribui para a maior eficiência da formulação com esse princípio ativo. Possivelmente, isso ocorre em função da sua recente introdução no mercado, já que as populações de carrapatos foram pouco desafiadas com este produto. Monitorar a resistência dos carrapatos aos carrapaticidas é fundamental para maximizar a eficiência desses produtos no controle de R. (B.) microplus.

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“…Ticks are obligate blood-feeding ectoparasites known to be vectors of several diseases that are important to health and the economy 9 . Until now, the control of these ectoparasites has relied mainly on the use of chemical acaricides 10 . One of the methods being considered to control these arthropods is through the development of anti-tick vaccines 11 .…”

Section: Discussionmentioning

confidence: 99%

Induction of intracellular ferritin expression in embryo-derived Ixodes scapularis cell line (ISE6)

Hernandez

Kusakisako

Talactac

et al. 2018

Sci Rep

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Iron is a very important nutrient for cells; however, it could also cause fatal effects because of its capability to trigger oxidative stress. Due to high exposure to iron from their blood diet, ticks make use of several mechanisms to cope up with oxidative stress. One mechanism is iron sequestration by ferritin and its control protein (IRP). Since the IRP activity is dependent on the ferrous iron concentration, we tried to induce intracellular ferritin (FER1) protein expression by exposing Ixodes scapularis embryo-derived cell line (ISE6) to different concentrations of ferrous sulphate at different time points. We were able to induce FER1 protein after exposure to 2 mM of ferrous sulphate for 48 h, as observed in both Western blotting and indirect immunofluorescent antibody tests. This could indicate that the FER1 produced could be a product of the release of IRPs from the FER1 mRNA leading to its translation. The RNA interference of FER1, through the transfection of dsRNA, led to an increase in mortality and decrease in the cellular proliferation of ISE6 cells. Overall, ISE6 cells could be a good tool in further understanding the mechanism of FER1 action, not just in Ixodes ticks but in other tick species as well.

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Survey of acaricides resistance status of Rhipiciphalus (Boophilus) microplus collected from selected places of Bihar, an eastern state of India

Cited by 48 publications

References 42 publications

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance

Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance

Efficacy of commercial synthetic pyrethroids and organophosphates associations used to control Rhipicephalus (Boophilus) microplus in Southern Brazil

Induction of intracellular ferritin expression in embryo-derived Ixodes scapularis cell line (ISE6)

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