Deltamethrin resistant alleles predominate in Rhipicephalus sanguineus sensu lato in South India

Anand, Amrutha; Lakshmanan, Bindu; Kajal, T. A.; Siju, Joseph; Aravindakshan, T. V.

doi:10.1007/s10493-021-00627-1

Cited by 8 publications

(5 citation statements)

References 28 publications

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“…Similarly, Sunkara et al (2022) and Rodriguez‐Vivas et al (2017) found cypermethrin resistance in R. sanguineus populations obtained from dogs in South India and Mexico, respectively. Amrutha et al (2021) also reported resistance to deltamethrin in populations of R. sanguineus in South India.…”

Section: Discussionmentioning

confidence: 91%

An investigation of the acaricidal activity of benzyl alcohol on Rhipicephalus annulatus and Rhipicephalus sanguineus and its synergistic or antagonistic interaction with commonly used acaricides

Aboelhadid,

Ibrahium,

Abdel‐Baki

et al. 2023

Medical Vet Entomology

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The most economically significant ectoparasites in the tropics and subtropics are ixodid ticks, especially Rhipicephalus annulatus and Rhipicephalus sanguineus. Years of extensive use of the readily available acaricides have resulted in widespread resistance development in these ticks, as well as negative environmental consequences. Benzyl alcohol (BA) has been frequently used to treat pediculosis and scabies, and it may be an effective alternative to commonly used acaricides. The main aim of the present study was to evaluate the acaricide activity of BA and its combination with the regularly used chemical acaricides against R. annulatus and R. sanguineus. Different concentrations of BA alone and in combination with deltamethrin, cypermethrin and chlorpyrifos were tested in vitro against adult and larvae of both tick species. The results showed that BA is toxic to R. annulatus and R. sanguineus larvae, with 100% larval mortality at concentrations of ≥50 mL/L, and LC50 and LC90 attained the concentrations of 19.8 and 33.8 mL/L for R. annulatus and 18.8 and 31.8 mL/L for R. sanguineus, respectively. Furthermore, BA in combination with deltamethrin, cypermethrin and chlorpyrifos exhibited synergistic factors of 2.48, 1.26 and 1.68 against R. annulatus larvae and 1.64, 11.1 and 1.14 against R. sanguineus larvae for deltamethrin + BA, cypermethrin + BA and chlorpyrifos + BA, respectively. BA induced 100% mortality in adult R. annulatus at concentrations of ≥250 mL/L with LC50 and LC90 reached the concentrations of 111 and 154 mL/L, respectively. Additionally, BA had ovicidal activity causing complete inhibition of larval hatching at 100 mL/L. The combination of BA with deltamethrin and cypermethrin increased acetylcholinesterase inhibition, whereas the combination of BA with chlorpyrifos decreased glutathione (GSH) activity and malondialdehyde levels. In the field application, the combination of BA 50 mL/L and deltamethrin (DBA) resulted in a significant reduction in the percentage of ticks by 30.9% 28 days post‐treatment when compared with groups treated with deltamethrin alone. In conclusion, BA causes mortality in laboratory and field studies alone and in combination with cypermethrin or deltamethrin. BA can be used for control of ticks of different life stages, that is, eggs and larvae, through application to the ground.

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Section: Discussionmentioning

confidence: 91%

An investigation of the acaricidal activity of benzyl alcohol on Rhipicephalus annulatus and Rhipicephalus sanguineus and its synergistic or antagonistic interaction with commonly used acaricides

Aboelhadid,

Ibrahium,

Abdel‐Baki

et al. 2023

Medical Vet Entomology

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“…Among the synthetic pyrethroids deltamethrin and cypermethrin is most commonly used acaricides. Deltamethrin resistance in cattle tick R. (Boophilus) microplus is observed widely in different parts of India (Shyma et al, 2013 [19] , Kumar et al, 2017 [10] , Singh et al, 2019 [22] , Amrutha et al, 2021) [1] . These problems substantiate the need for the development of novel selective control alternatives.…”

Section: Discussionmentioning

confidence: 99%

In vitro evaluation of acaricidal activity of different plant extracts against Rhipicephalus (Boophilus) microplus

Maddikontla,

et al. 2023

Pharma Innovation

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Ticks and tick born diseases affect the economics of dairy and farm animals. Continuous use of acaricides leads to development of acaricide resistance in the tick population, in order to overcome resistance, newer alternatives like herbal extracts can be used as acaricides. The following study is designed to evaluate the acaricidal efficacy of Azadirachta indica, Calotropis gigantea and Ricinus communis against R. (Boophilus) microplus tick. Aqueous plant extracts were prepared from dried plant material and these were evaluated using two different bioassays like adult immersion test and larval packet test. At 80 mg/ml concentration A. indica showed lowest LC50 and LC99 values when compared to R. communis and C. gigantea. In conclusion A. indica is relatively more efficient in acaricidal activity than R. communis followed by C. gigantea.

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“…Mutation mediated knockdown resistance (kdr) is the most prevalent and frequent cause of pyrethroid resistance in ticks (Castro et al, 2019;Cossío-Bayúgar et al, 2020). Several investigations, mostly on Rhipicephalus spp., reported various point mutations in the sodium channel gene associated with reduce susceptibility to pyrethroids (Stone et al, 2014;Cossío-Bayúgar et al, 2020;Aguilar, 2018;Klafke et al, 2019;Castro et al, 2021;Amrutha et al, 2021a;Amrutha et al, 2021b).…”

Section: • Voltage Channelsmentioning

confidence: 99%

Beyond Chemicals: Exploring Greener Options for Tick Control

Lakshmanan,

Nikhat Reena,

Anand

2023

JIVA

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Ticks are obligate haematophagous ectoparasites that feed on a variety of vertebrate host animals. They transmit a wide range of disease-causing organisms and are of great medical and veterinary importance. Several characteristics of ticks confer them outstanding attributes to serve as vectors of pathogenic agents, viz., the wide host range and tendency to feed on several hosts during life cycle ensures ample opportunity to acquire and transmit pathogens, hardiness and longevity enable them to survive long periods in unfavourable environmental conditions, high reproductive potential ensuring maintenance of large populations and a high frequency of host-vector contact. Conventional methods for tick control are based on the use of acaricides and insect growth regulators. The continuous emergence of ticks and tick-borne diseases (TTBs) and acaricide resistance of ticks necessitated the development of new and

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Deltamethrin resistant alleles predominate in Rhipicephalus sanguineus sensu lato in South India

Cited by 8 publications

References 28 publications

An investigation of the acaricidal activity of benzyl alcohol on Rhipicephalus annulatus and Rhipicephalus sanguineus and its synergistic or antagonistic interaction with commonly used acaricides

An investigation of the acaricidal activity of benzyl alcohol on Rhipicephalus annulatus and Rhipicephalus sanguineus and its synergistic or antagonistic interaction with commonly used acaricides

In vitro evaluation of acaricidal activity of different plant extracts against Rhipicephalus (Boophilus) microplus

Beyond Chemicals: Exploring Greener Options for Tick Control

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