Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle

Nava, Stefano; Mangold, Atilio José; Canevari, Jose Tobias; Guglielmone, Alberto A.

doi:10.1016/j.vetpar.2015.01.015

Cited by 22 publications

(31 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this sense, the dynamics of tick infestation in the control group exhibited a pattern of seasonality characterized by increasing abundance from late winter and early spring to autumn, when the major peak was observed. This pattern, characterized by a major peak in abundance in autumn and low numbers of ticks in late winter and early spring, coincides in general terms with the seasonality of R. microplus on cattle previously recorded at the study site (Ivancovich, ) and in more arid areas of northwest Argentina (Guglielmone et al ., ; Nava et al ., ; Canevari et al ., ), and is instrumental in the feasibility of the control strategy, which is based on the application to cattle of a first treatment when levels of tick infestation in pastures are low.…”

Section: Discussionmentioning

confidence: 99%

“…The results obtained in the trials performed during this work were very similar to those presented by Nava et al . (, ) and Morel et al . (), who evaluated the efficacy of methods of strategic control against R. microplus in areas of northwest Argentina with ecological conditions intermediate or unfavourable to the development of this tick.…”

Section: Discussionmentioning

confidence: 99%

“…The schemes evaluated by Nava et al . (, ) and Morel et al . (), which were based on three treatments with chemical acaricides (ivermectin 3.15%, fipronil and fluazuron), followed the same application schemes used in the current study.…”

Section: Discussionmentioning

confidence: 99%

“…In Argentina, strategic control methods based on three annual applications of acaricides between late winter and late spring were designed and tested with positive results in the northwestern part of the country (Nava et al ., , ; Morel et al ., ), where ecological conditions are classified as intermediate or unfavourable for the development of R. microplus (Guglielmone, ). In this area, the dynamics of R. microplus are characterized by three annual generations which increase in abundance from mid‐ or late spring to autumn and then show a marked decrease through winter and early spring (Guglielmone et al ., ; Nava et al ., ; Canevari et al ., ). However, the efficacy of winter–spring strategic control schemes against R. microplus infestations in cattle in the area of northeast Argentina with the most favourable conditions for this tick (Guglielmone, ) has not yet been tested.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficacy of winter–spring strategic control against Rhipicephalus (Boophilus) microplus infestations on cattle in an area with ecological conditions highly favourable for the tick in northeast Argentina

Nava

Toffaletti

Morel

et al. 2019

Medical Vet Entomology

View full text Add to dashboard Cite

This work was performed to test the efficacy of winter-spring control strategies against Rhipicephalus (Boophilus) microplus (Ixodida: Ixodidae) infestations on cattle in the area ecologically most favourable for the development of this tick in Argentina. Two control schemes using three and four annual applications of acaricides, respectively, were evaluated. Animals in Group 1 were treated with ivermectin 3.15% on day 0, fluazuron on day 34, and fipronil on day 85. Animals in Group 2 were treated with ivermectin 3.15% on day 0, fluazuron on day 34, flumethrin on day 85, and fipronil on day 114. Animals in Group 3 represented the control group. Both treatment schemes provided appropriate levels of efficacy against R. microplus and also prevented the occurrence of the major peak in the frequency of this tick in autumn. The two treatment schemes were similar in terms of efficacy and thus the addition of a fourth treatment does not seem to confer any further advantage. The results of this work indicate that these strategic control methods provide appropriate levels of control against R. microplus.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficacy of winter–spring strategic control against Rhipicephalus (Boophilus) microplus infestations on cattle in an area with ecological conditions highly favourable for the tick in northeast Argentina

Nava

Toffaletti

Morel

et al. 2019

Medical Vet Entomology

View full text Add to dashboard Cite

show abstract

“…( B .) microplus that preclude the development of the larger autumn generation (Nava et al ., , ). The control schemes designed in these works were based on information on seasonal variations in population abundances of R .…”

Section: Introductionmentioning

confidence: 97%

Population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical subhumid region of Argentina for use in the design of control strategies

Canevari

Mangold

Guglielmone

et al. 2016

Medical Vet Entomology

View full text Add to dashboard Cite

The population dynamics of Rhipicephalus microplus (Ixodida: Ixodidae) in northwest Argentina was analysed to support the design of strategic methods for its control. Both parasitic and non-parasitic phases were studied. The seasonal activity of R. microplus in its parasitic phase was characterized by three peaks in abundance: the first in mid-late spring; the second in summer, and the third in autumn. The non-parasitic phase of R. microplus was characterized by a long total non-parasitic period observed after exposures of females from mid-summer to early autumn, a short total non-parasitic period observed after exposures of females from late winter to late spring, a short period of larval longevity in early and mid-summer, and no hatch of the eggs produced by females exposed in mid- and late autumn and winter. Treatments of cattle administered during the period from late winter to late spring will act on small cohorts of R. microplus, preventing the emergence of larger generations in summer and autumn. A 17-week spelling period starting in late spring and early summer will be necessary to achieve optimal control of R. microplus free-living larvae. If spelling begins in mid- or late summer or in autumn, the required period will be 26-27 weeks.

show abstract

Alternative applications of the strategic control against the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical area

et al. 2021

Self Cite

View full text Add to dashboard Cite

Although different evaluations on the efficacy of the strategic control against Rhipicephalus microplus have been performed, the effects of successive applications of these schemes on the abundance of cattle ticks have not been evaluated. The aim of this work was to analyse the long-term effect of strategic applications of chemical acaricides on the R. microplus infestation in cattle in a subtropical area. These schemes are based on the application of three annual treatments between late winter and late spring. Additionally, a trial to evaluate the efficacy of the strategic control by deferring the first treatment from late winter to spring and the third treatment from late spring to summer was also carried out. The efficacy of the strategic control applied on 3 consecutive years was significant. The tick infestation in the treated group always remained at low levels, because mean number of ticks was almost never higher than 20. Regarding the trial where the third application of acaricide was deferred from spring to summer, and the first one from late winter to spring, the differences between treated and control group were significant in all post-treatment counts. The results of this study add evidence that support the sustainability of the strategic control in subtropical areas where the population dynamics of R. microplus is characterized by a well-marked seasonal pattern. Three relevant aspects were determined: (i) the feasibility and efficacy of successive applications of the strategic control in consecutive years; (ii) the time window to start the sequence of treatments is from late winter to midspring; (iii) it is achievable deferring the last treatment from late spring to summer if the tick infestation levels on cattle are low enough to allow it.

show abstract

Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle

Cited by 22 publications

References 31 publications

Efficacy of winter–spring strategic control against Rhipicephalus (Boophilus) microplus infestations on cattle in an area with ecological conditions highly favourable for the tick in northeast Argentina

Efficacy of winter–spring strategic control against Rhipicephalus (Boophilus) microplus infestations on cattle in an area with ecological conditions highly favourable for the tick in northeast Argentina

Population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical subhumid region of Argentina for use in the design of control strategies

Alternative applications of the strategic control against the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical area

Contact Info

Product

Resources

About