Effect of pyroligneous extract of Acacia mearnsii on Tetranychus urticae (Koch, 1836) (Acari, Tetranychidae) and Neoseiulus californicus (McGregor, 1954) (Acari, Phytoseiidae)

Authors

  • Adriana de Castro Centro Universitário UNIVATES
  • Júlia Jantsch Ferla Centro Universitário UNIVATES
  • Fernanda Majolo Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
  • Noeli Juarez Ferla Centro Universitário UNIVATES

DOI:

https://doi.org/10.5007/2175-7925.2015v28n4p99

Abstract

This work aimed to determine the effect of decanted pyroligneous extract (DPE) of black Acacia mearnsii on the mites Tetranychus urticae (Koch, 1836) (Acari: Tetranychidae) and Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae). Six different concentrations were tested, namely, DPE: water 1:600, 1:300, 1:150, 1:75, 1:38 and 1:19 and a control treatment with distilled water. Five females of T. urticae and N. californicus were transferred to arenas, totaling 50 females per treatment, for a period of eight days. DPE caused high mortality in N. californicus, while in T. urticae, high mortality was observed only at high (1:75, 1:38 and 1:19) and intermediate (1:150) concentrations. Notably, DPE was slightly harmful to T. urticae at lower concentrations and harmful to N. californicus at all concentrations, indicating that it would have little efficacy in the control of T. urticae.

Author Biographies

Adriana de Castro, Centro Universitário UNIVATES

Laboratório de Acarologia

Júlia Jantsch Ferla, Centro Universitário UNIVATES

Laboratório de Acarologia

Fernanda Majolo, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)

Laboratorio de Biologica Celular e Molecular, Instituto de Pesquisas Biomédicas

Noeli Juarez Ferla, Centro Universitário UNIVATES

Laboratório de Acarologia

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Published

2015-08-25

Issue

Vol. 28 No. 4 (2015)

Section

Artigos

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