Effectiveness of Entomopathogenic Nematodes Against Ceratitis capitata (Diptera: Tephritidae) Pupae and Nematode Compatibility with Chemical Insecticides.

Autor:	Jean-Baptiste MC; Departamento de Fitossanidade, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., de Brida AL; Departamento de Ecologia de Insetos, Zoologia e Genética do Instituto de Biologia da Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., Bernardi D; Departamento de Fitossanidade, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., da Costa Dias S; Programa de Pós-Graduação em Entomologia do Instituto de Biologia da Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., de Bastos Pazini J; Departamento de Fitossanidade, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., Leite LG; Instituto Biológico de Campinas, Campinas, São Paulo, Brazil., Wilcken SRS; Departamento de Ecologia, Zoologia e Genética do Instituto de Biologia da Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil., Garcia FRM; Departamento de Ecologia de Insetos, Zoologia e Genética do Instituto de Biologia da Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of economic entomology [J Econ Entomol] 2021 Feb 09; Vol. 114 (1), pp. 248-256.
DOI:	10.1093/jee/toaa301
Abstrakt:	The Mediterranean fruit fly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) is among the main pests of fruit crops worldwide. Biological control using entomopathogenic nematodes (EPNs) may be an alternative to suppress populations of this pest. Thus, the aim of this study was to evaluate the pathogenicity and virulence of six EPN isolates (Heterorhabditis bacteriophora HB, H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47, and S. brazilense IBCB-n06) against C. capitata pupae. The compatibility of EPNs with different chemical insecticides that are registered for management of C. capitata was also assessed. Isolates of H. bacteriophora HB and S. brazilense IBCB-n06 at a concentration of 1,000 infective juveniles (IJ)/ml proved to be most pathogenic to C. capitata (70 and 80% mortality, respectively). In contrast, the isolates H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47 provided pupal mortality of less than 60%. Bioassays to determine lethal concentrations indicated that concentrations of 600 IJ/ml (H. bacteriophora HB) and 1,000 IJ/ml (S. brazilense IBCB-n06) showed the highest virulence against C. capitata pupae. In contrast, the highest numbers of IJs emerged at concentrations of 1,200 and 200 IJ/ml. In compatibility bioassays, malathion, spinetoram, phosmet, acetamiprid, and novaluron were considered compatible with and harmless (Class 1) to H. bacteriophora HB and S. brazilense IBCB-n06, according to IOBC/WPRS. This information is important for implementing integrated management programs for C. capitata, using biological control with EPNs, whether alone or in combination with chemical insecticides. (© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze:	MEDLINE
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