Selectivity of mycoinsecticides and a pyrethroid to the egg parasitoid Cleruchoides noackae (Hymenoptera: Mymaridae)

• Published in: Scientific reports Vol. 10; no. 1; p. 14617
• Main Authors: Domingues, Maurício Magalhães, Becchi, Luciane Katarine, Velozo, Simone Graziele Moio, de Souza, Amanda Rodrigues, Barbosa, Leonardo Rodrigues, Soares, Marcus Alvarenga, Serrão, José Eduardo, Zanuncio, José Cola, Wilcken, Carlos Frederico
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 03-09-2020; Nature Publishing Group
• Subjects: 631/601/1466; 631/601/18; Agricultural practices; Animals; Antiviral agents; Australia; Beauveria; Biological control; Biotin; Double-stranded RNA; Eucalyptus - parasitology; Global economy; Heteroptera - drug effects; Heteroptera - microbiology; Humanities and Social Sciences; Hymenoptera; Immune response; Infections; Innate immunity; Insecticides; Insects; Integrated pest management; Metarhizium; Mitochondria; multidisciplinary; Offspring; Parasitism; Pest control; Pest Control, Biological - methods; Pests; Predators; Pyrethroids; Science; Science (multidisciplinary); SUMO protein; Transcription activation; Australia
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-020-71151-2

Plants of the genus
Eucalyptus
, cultivated in many countries, have great importance for the world economy. In Brazil, this culture occupies a total of 5.7 million hectares, but native and exotic insect pests can reduce its productivity.
Thaumastocoris peregrinus
Carpintero & Dellapé (Hemiptera: Thaumastocoridae), an exotic Australian pest, damages
Eucalyptus
plants. Biological control using the egg parasitoid
Cleruchoides noackae
Lin & Huber (Hymenoptera: Mymaridae), Heteroptera predators and entomopathogenic fungi, such as
Beauveria bassiana
and
Metarhizium anisopliae
, have potential for managing
T. peregrinus
. Chemical insecticides, including bifenthrin and acetamiprid + bifenthrin, also control this insect. The compatibility of chemical and biological control methods favors integrated pest management. The objective of this study was to evaluate the selectivity of commercial products based on
B. bassiana
,
M. anisopliae
and the chemical bifenthrin on the parasitoid
C. noackae
and its parasitism on
T. peregrinus
eggs. The selectivity test followed the standards recommended by the International Organization for Biological Control (IOBC).
Beauveria bassiana
has selectivity to parasitism as well as viability, but was slightly harmful to
C. noackae
adults;
M. anisopliae
was innocuous to adults and to the viability of the offspring of this parasitoid, but it reduced the parasitism rate; and bifenthrin did not show selectivity to this parasitoid.