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Acetylation of carvacrol raises its efficacy against engorged cattle ticks Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). 2021

Raquel Romano Palmeira Gonçalves, and Ana Paula Peconick, and Isaac Filipe Moreira Konig, and Allan Silva Lunguinho, and Jenifer Caroline da Silva Ribeiro, and Samuel Lucas Gomes, and Larissa Silva, and Sérgio Scherrer Thomasi, and Rafael Neodini Remedio
Department of Veterinary Medicine, Federal University of Lavras (UFLA), Lavras, MG, Brazil.

The effects of acetylcarvacrol on the reproductive performance of engorged female R. microplus were evaluated. Carvacrol was acetylated by a reaction with acetic anhydride, confirmed by the identification of its melting point and by infrared spectroscopy. Based on the median lethal concentration, females were exposed to sublethal concentrations (3.7, 4.6 and 5.0 μL/mL) of acetylcarvacrol by means of the adult immersion test. The following parameters were evaluated: female weight before oviposition, pre-oviposition period, egg mass weight, egg production index, incubation period, hatching rate, fecundity rate, percentage of reduction in oviposition, percentage of reduction in hatching and product efficacy. The greatest efficacy was observed in the group treated with the highest concentration (91.69%) due to the greater weight reduction in egg mass (34.91 ± 0.02 mg) and the lower hatching rate (7.23 ± 15.50%). Therefore, this compound is a promising alternative for the control of R. microplus infestations.

UI MeSH Term Description Entries
D005260 Female Females
D000081007 Cymenes A subclass of monoterpenes that contain a single benzene ring structure with an isopropyl group and one or more methyl groups. Benzenoid Menthane,Benzenoid Menthanes,Cymene,Menthane, Benzenoid,Menthanes, Benzenoid
D000107 Acetylation Formation of an acetyl derivative. (Stedman, 25th ed) Acetylations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D048494 Rhipicephalus A genus of TICKS, in the family IXODIDAE, widespread in Africa. Members of the genus include many important vectors of animal and human pathogens.
D056810 Acaricides A pesticide or chemical agent that kills mites and ticks. This is a large class that includes carbamates, formamides, organochlorines, organophosphates, etc, that act as antibiotics or growth regulators. Acaricide,Mite Control Agent,Miticide,Agent, Mite Control,Control Agent, Mite
D026863 Ixodidae A family of hardbacked TICKS, in the subclass ACARI. Genera include DERMACENTOR and IXODES among others. Ticks, Hardbacked,Hard Ticks,Hard Tick,Hardbacked Tick,Hardbacked Ticks,Tick, Hard,Tick, Hardbacked,Ticks, Hard

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