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Vet Parasitol. 2018 Apr 30;254:147-150. doi: 10.1016/j.vetpar.2018.03.009. Epub 2018 Mar 12.

Activity of the extract of Acmella oleracea on immature stages of Amblyomma sculptum (Acari: Ixodidae).

Author information

1
Programa de Pós-graduação em Ciências Veterinárias da Universidade Federal Rural do Rio de Janeiro, BR-465, Km 7, Seropédica, RJ, 23897-000, Brazil. Electronic address: paulabarrosocruz@hotmail.com.
2
Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos da Universidade Federal Rural do Rio de Janeiro, Brazil, Rodovia BR 465 - Km 7, Seropédica, RJ, 23897-000, Brazil; Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso - Campus Sorriso, Brazil Avenida dos Universitários, 799, Bairro Santa Clara, Sorriso, MT, 78.890-000, Brazil. Electronic address: alan.barbosa@srs.ifmt.edu.br.
3
Programa de Pós-graduação em Ciências Biológicas, Comportamento e Biologia Animal da Universidade Federal de Juiz de For a, Rua José Lourenço Kelmer, s/n - Campus Universitário, Bairro São Pedro, Juiz de Fora, MG, 36036-900, Brazil.
4
Programa de Pós-graduação em Ciências Veterinárias da Universidade Federal Rural do Rio de Janeiro, BR-465, Km 7, Seropédica, RJ, 23897-000, Brazil. Electronic address: tatinovatojf@gmail.com.
5
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, Brazil, Rodovia BR 465 - Km 7, Seropédica, RJ, 23897-000, Brazil. Electronic address: mirzanalesso@gmail.com.
6
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, Brazil, Rodovia BR 465 - Km 7, Seropédica, RJ, 23897-000, Brazil. Electronic address: mariogdecarvalho@gmail.com.
7
Departamento de Bioquímica da Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n - Campus Universitário, Bairro São Pedro, Juiz de Fora, MG, 36036-900, Brazil. Electronic address: rodrigo.fabri@ufjf.edu.br.
8
Departamento de Imunologia, Microbiologia, Parasitologia e Patologia, Instituto de Patologia Tropical e Saúde Pública da Universidade Federal de Goiás, Avenida Esperança, s/n, Campus Samambaia, Goiânia, GO, 74.690-900, Brazil. Electronic address: caisato@gmail.com.

Abstract

This study evaluated the acaricidal activity of the methanol extract of Acmella oleracea with 0.187% of spilanthol against immature stages of Amblyomma sculptum. The packet test was used to evaluate the extract's activity on unengorged larvae and nymphs, testing concentrations of 0.4 to 50 mg/mL for larvae and 12.5 to 200.0 mg/mL for nymphs. For the engorged stages, the immersion test was used, at concentrations of 0.4 to 50 mg/mL for larvae and 12.5 to 200.0 mg/mL for nymphs. The methanol extract caused 100% mortality of the unengorged larvae and nymphs starting at concentrations of 12.5 and 200.0 mg/mL, respectively. For engorged larvae and nymphs, the mortality was 100% starting from concentrations of 12.5 and 150.0 mg/mL, respectively. The LC50 for unengorged larvae was 3.2 mg/mL, while for engorged larvae it was 6.6 mg/mL. For unengorged nymphs, the LC50 was 38.5 mg/mL, but it was not possible to calculate the corresponding value for engorged nymphs because the data did not fit the probit model. These results demonstrate that the methanol extract of A. oleracea has acaricidal activity against different immature stages of A. sculptum.

KEYWORDS:

Amblyomma cajennense complex; Jambu; Plant extract; Tick control

PMID:
29657000
DOI:
10.1016/j.vetpar.2018.03.009
[Indexed for MEDLINE]

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