In vitro evaluation of acaricidal activity of eugenol and benzaldehyde against Rhipicephalus annulatus

In vitro evaluation of acaricidal activity of eugenol and benzaldehyde against Rhipicephalus annulatus

Economic importance of ticks for both humans and animals is significant primarily because of their involvement in disease transmission. The continuous use of synthetic chemical acaricides on animals and/or in the environment has resulted in the emergence of resistant tick populations. Consequently,...

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Published in:Veterinary parasitology Vol. 331; p. 110285
Main Authors: Kathiravan, Subramaniam, Immadi, Srikanth, Kurbet, Prashant Somalingappa, Alimudeen, Sirajudeen, Ajith Kumar, Karapparambu Gopalan, Varghese, Anju, Deepa, Chundayil Kalarikkal, Juliet, Sanis, Ravindran, Reghu
Format: Journal Article
Language:English
Published: Netherlands Elsevier B.V 01-10-2024
Subjects:
Acaricides - pharmacology
Adult mortality
Animals
Aromatic aldehyde
Benzaldehydes - pharmacology
Essential oil
Eugenol - pharmacology
Fecundity
Female
Larva - drug effects
Lethal Dose 50
Monoterpenoid
Rhipicephalus - drug effects
Ticks
Monoterpenoid
Adult mortality
Essential oil
Aromatic aldehyde
Fecundity
Ticks
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Summary:Economic importance of ticks for both humans and animals is significant primarily because of their involvement in disease transmission. The continuous use of synthetic chemical acaricides on animals and/or in the environment has resulted in the emergence of resistant tick populations. Consequently, there is a compelling need to explore newer natural alternatives that can address their adverse effects effectively. Since, there are no earlier reported studies on the acaricidal activity of eugenol and benzaldehyde against Rhipicephalus annulatus, the present study compared the in vitro adulticidal and larvicidal activities of these phytochemicals against R. annulatus. Concentration-dependent mortality and inhibition of fecundity were observed in the adult female ticks treated with both eugenol and benzaldehyde. The LC50 and LC90 values of eugenol against R. annulatus were 162.33 and 467.74 mg/mL for adult female, while it was 1.26 and 1.73 mg/mL for larvae respectively. The LC50 and LC90 values of benzaldehyde against R. annulatus were 178 and 395 mg/mL for adult female and 0.69 and 4.32 mg/mL for larvae respectively. •First description of eugenol and benzaldehyde acaricidal activity against Rh. annulatus.•Concentration-dependent mortality and inhibition of fecundity.•LC50 of eugenol: 162.33 mg/mL (adult female) and 1.26 mg/mL (larvae).•LC50 of benzaldehyde: 178 mg/mL (adult female) and 0.69 mg/mL (larvae).
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ISSN:0304-4017
1873-2550
1873-2550
DOI:10.1016/j.vetpar.2024.110285