Acaricidal and Repellent Effects of Essential Oils against Ticks: A Review.

Sidi Mohammed Ammar Selles,María Sánchez,Félix Valcárcel,A Sonia Olmeda,Julia González,Marta G González,Mokhtaria Kouidri,Jaime Sanchis,José Maria Tercero,Latifa Elhachimi,Azucena González-Coloma

doi:10.3390/pathogens10111379

Abstract

Tick control is a priority in order to prevent the transmission of vector-borne diseases. Industrial chemical acaricides and repellents have been the most efficient tools against hard ticks for a long time. However, the appearance of resistances has meant the declining effectiveness of the chemicals available on the market. The trend today is to develop alternative control methods using natural products to replace nonefficient pesticides and to preserve the efficient ones, hoping to delay resistance development. Traditional in vitro evaluation of acaricidal activity or resistance to synthetic pesticides have been reviewed and they mainly focus on just one species, the one host tick (Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)). Recent reports have called for the standardization of natural product components, extraction techniques, and experimental design to fully discover their acaricidal potential. This study reviews the main variables used in the bibliography about the efficiency of natural products against ticks, and it proposes a unification of variables relating to ticks, practical development of bioassays, and estimation of ixodicidal activity.

Highlights

IntroductionTicks are forced bloodsucker ectoparasites belonging to the Order Ixodida, which comprises three families: Ixodidae (hard ticks, 720 species), Argasidae (soft ticks, 186 species), and Nuttalliellidae (1 species) [1,2]
Ticks are forced bloodsucker ectoparasites belonging to the Order Ixodida, which comprises three families: Ixodidae, Argasidae, and Nuttalliellidae (1 species) [1,2]
This review aims to present an overview of tick control methods, tick resistance, essential oils in control of ticks, and their mechanisms of action

Summary

Introduction

Ticks are forced bloodsucker ectoparasites belonging to the Order Ixodida, which comprises three families: Ixodidae (hard ticks, 720 species), Argasidae (soft ticks, 186 species), and Nuttalliellidae (1 species) [1,2] They are one of the main groups of disease vectors, and tick-borne diseases (TBDs) have long been recognized as one of the major constraints to livestock development in various countries [3], in the cattle industry in tropical and subtropical regions [4]. Many commercially available chemicals are used in current tick control strategies: arsenicals, chlorinated hydrocarbons, carbamates, macrocyclic lactones [8,9], organophosphates, formamidines, pyrethroids [8,9,10,11], fluazuron, and fipronil [10,11] They have generally been sprinkled on, poured on, or injected into animals, with high costs for farmers [10,11]

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