Florida Entomologist (2015) 98, 899-902

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Germano Leão Demolin Leite, Paula Daiana de Paulo, José Cola Zanuncio, Anarelly Costa Alvarenga, Marcus Alvarenga Soares, Wagner de Souza Tavares, Leonardo David Tuffi-Santos and Paulo Roberto de Carvalho Spínola-Filho (2015)
Effects of atrazine-based herbicide on emergence and sex ratio of Trichogrammatidae (Hymenoptera)
Florida Entomologist 98 (3), 899-902
Abstract: The aim of this study was to evaluate the effect of the herbicide atrazine, recommended for weed control in corn, on 10 species of Trichogrammatidae (Hymenoptera). A female of each trichogrammatid was placed individually in a test tube (no-choice) with a card containing approximately 45 Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) eggs. Parasitism by these trichogrammatids was allowed for 48 h, and the cards were sprayed with the herbicide atrazine at 6 L/ha, along with a control (distilled water). Atrazine reduced the emergence of Trichogramma bruni Nagaraja females, but increased that of Trichogramma pretiosum Riley, Trichogramma demoraesi Nagaraja, Trichogramma galloi Zucchi, and Trichogramma soaresi Nagaraja. In addition, atrazine reduced the sex ratio of T. bruni, Trichogramma atopovirilia Oatman and Platner, and Trichogramma bennetti Nagaraja and Nagarkatti, and increased that of T. demoraesi and T. soaresi. The herbicide was slightly harmful to T. bennetti and T. bruni, but was relatively harmless to the other species of Trichogrammatidae based on the standards of the International Organization for Biological Control (IOBC).
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Full text of article
Database assignments for author(s): José Cola Zanuncio, Marcus Alvarenga Soares, Wagner de S. Tavares

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Trichogramma pretiosum (parasitoid) Brazil (south)
Trichogramma galloi (parasitoid) Brazil (south)
Trichogramma atopovirilia (parasitoid) Brazil (south)
Trichogramma bruni (parasitoid) Brazil (south)
Trichogramma demoraesi (parasitoid) Brazil (south)