The toxic effect of permethrin and cypermethrin on engorged Ixodes ricinus females

Buczek, Alicja; Bartosik, Katarzyna; Kuczyński, Paweł

doi:10.5604/1232-1966.1108587

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…high fertility (Bartosik and Buczek 2012), an ability to adapt to various types of habitats and abiotic conditions (Bartosik et al 2011b;Geller et al 2013;Pangrácová et al 2013;Buczek et al 2014b), and a wide host range including numerous small and big mammals and birds (Gern 2008), contribute to changes in their distribution range and increased abundance of this tick species (Jaenson et al 2012;Medlock et al 2013). The expansion of the I. ricinus occurrence range was facilitated by climatic and weather changes as well as human activities influencing groups of plants and animals that are potential hosts of various developmental stages of this tick species (Estrada-Peña et al 2006;Gray 2008;Schwarz et al 2009;Buczek et al 2014b). Application of effective acaricides at time intervals controlled by environmental monitoring over a given area may substantially reduce the abundance of the tick species (Benelli et al 2017), thereby mitigating the risk of tick-borne diseases (Pegram and Eddy 2003;Otranto et al 2010).…”

Section: Discussionmentioning

confidence: 99%

The effect of sublethal concentrations of deltamethrin and alphacypermethrin on the fecundity and development of Ixodes ricinus (Acari: Ixodidae) eggs and larvae

et al. 2019

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Two pyrethroids, deltamethrin (D) and alphacypermethrin (AC), have been used as commercial products for tick control worldwide. However, the effects of sublethal doses of these compounds on various tick species and their developmental stages have not been fully explored yet, although such knowledge could contribute to a more effective application of both pyrethroids and simultaneous reduction of their costs and undesirable side effects, including the harmful impact on other organisms and environmental contamination. This study investigates the effect of sublethal concentrations of D and AC applied to engorged females on the fecundity, development of eggs and larvae, and the number of offspring in the Ixodes ricinus (L.) tick, which is the most important vector of tick-borne diseases of humans in Europe. After detachment from rabbit's skin, fully engorged I. ricinus females were treated with 20 μl of pyrethroid solutions at five concentrations from 0.01562 to 0.25% and kept at 28 °C and 75% relative humidity. The impact of the pyrethroids on maturation and development of eggs as well as development of larvae was assessed based on parameters of the preoviposition and oviposition periods and the course of embryogenesis and egg hatch. The investigations have shown that both tested acaricides reduce the reproductive rate in I. ricinus females by inhibition of egg development and disturb embryonic development and larval hatch. Females did not lay eggs at concentrations higher than 0.0625% AC and 0.125% D. The lower concentrations of both pyrethroids disturbed or inhibited the embryogenesis and egg hatch in I. ricinus.

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Section: Discussionmentioning

confidence: 99%

The effect of sublethal concentrations of deltamethrin and alphacypermethrin on the fecundity and development of Ixodes ricinus (Acari: Ixodidae) eggs and larvae

et al. 2019

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“…As larvae will have hatched by the start of the tick activity season in early spring, all births within the model occur at the start of each year before ticks are active. The model developed by Gilbert et al [44] assumed the number of eggs laid by each adult female to be 1400 and Buczek et al [57] record hatching success as 89.6%, giving an estimate of 628 larvae produced from each adult which has successfully fed, assuming a 1:1 adult sex ratio.…”

Section: A13 Birthmentioning

confidence: 99%

GIS-ODE: linking dynamic population models with GIS to predict pathogen vector abundance across a country under climate change scenarios

Worton,

Norman,

Gilbert

et al. 2024

J. R. Soc. Interface.

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Mechanistic mathematical models such as ordinary differential equations (ODEs) have a long history for their use in describing population dynamics and determining estimates of key parameters that summarize the potential growth or decline of a population over time. More recently, geographic information systems (GIS) have become important tools to provide a visual representation of statistically determined parameters and environmental features over space. Here, we combine these tools to form a ‘GIS-ODE’ approach to generate spatiotemporal maps predicting how projected changes in thermal climate may affect population densities and, uniquely, population dynamics of Ixodes ricinus , an important tick vector of several human pathogens. Assuming habitat and host densities are not greatly affected by climate warming, the GIS-ODE model predicted that, even under the lowest projected temperature increase, I. ricinus nymph densities could increase by 26–99% in Scotland, depending on the habitat and climate of the location. Our GIS-ODE model provides the vector-borne disease research community with a framework option to produce predictive, spatially explicit risk maps based on a mechanistic understanding of vector and vector-borne disease transmission dynamics.

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“…Among the chemicals applied in tick control, synthetic pyrethroids are widely used as repellents for protection of humans [ 7 – 9 ] and animals [ 10 – 12 ] and as tick control agents [ 13 – 18 ].…”

Section: Introductionmentioning

confidence: 99%

The effect of synthetic pyrethroids on the attachment and host-feeding behaviour in Dermacentor reticulatus females (Ixodida: Amblyommidae)

2015

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BackgroundThe high competence of D. reticulatus in transmission of tick-borne pathogens prompts investigations of the effect of chemicals used as repellents and acaricides on the behaviour of the tick on the host. Therefore, this paper presents the effect of permethrin and deltamethrin on the attachment and feeding in this tick species.FindingsAttachment to rabbit skin of D. reticulatus females sprayed with pyrethroids and the effect of different doses thereof on feeding were assessed at a temperature of 20 ± 3 °C and 50 % humidity.The dynamics of attachment of D. reticulatus females varied in a dose-dependent manner after the application of both pyrethroids. Within the first 0.5 h of the experiments, there was an over six-fold and over twelve-fold increase in the number of females attached to host skin after application of permethrin concentrations of 0.3906–0.7812 μg and 1.5625–3.1250 μg/1 specimen, respectively. In the case of deltamethrin, females treated with the dose of 0.0390 μg of the compound were able to attach to host skin only 4 hours after the infestation.The toxic activity of both pyrethroids increased the duration of the feeding period and decreased the body weight of engorged females and the feeding efficiency index.ConclusionsThe accelerated attachment of D. reticulatus females caused by sublethal permethrin doses and delayed or inhibited attachment caused by deltamethrin suggest a necessity of careful selection of the type and dose of pyrethroids to protect hosts from tick attacks.

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The toxic effect of permethrin and cypermethrin on engorged Ixodes ricinus females

Abstract: Knowledge about the sensitivity of engorged females to different doses of the tested pyrethroids and the remote effects of their action can be used in practice for tick control among livestock animals, and the reduction of tick population abundance in the environment.

Cited by 6 publications

References 18 publications

The effect of sublethal concentrations of deltamethrin and alphacypermethrin on the fecundity and development of Ixodes ricinus (Acari: Ixodidae) eggs and larvae

The effect of sublethal concentrations of deltamethrin and alphacypermethrin on the fecundity and development of Ixodes ricinus (Acari: Ixodidae) eggs and larvae

GIS-ODE: linking dynamic population models with GIS to predict pathogen vector abundance across a country under climate change scenarios

The effect of synthetic pyrethroids on the attachment and host-feeding behaviour in Dermacentor reticulatus females (Ixodida: Amblyommidae)

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