Banca de DEFESA: MARIA VITORIA GUERRA DE LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA VITORIA GUERRA DE LIMA
DATE: 25/02/2026
TIME: 08:00
LOCAL: Auditório PRPG
TITLE:

INTERACTION OF THE EARWIG Euborellia annulipes (LUCAS) (DERMAPTERA: ANISOLABIDIDAE) WITH INSECTICIDES APPLIED VIA SEED TREATMENT AND HERBICIDES APPLIED TO THE SOIL

KEY WORDS:

Seed treatment, herbicides, soil-dwelling predators, pesticide selectivity.

PAGES: 56
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Entomologia Agrícola
SUMMARY:

Ground-dwelling predatory insects, such as the ring-legged earwig Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae), play an important role in biological pest control but are often overlooked because they live cryptically in soil and hide among plant parts. Because they inhabit the soil, these predators may be exposed to insecticides used in seed treatment (ST), soil-applied herbicides, or spray drift. This study evaluated the survival of E. annulipes under two exposure scenarios: (i) confinement in microcosms containing ST crops or herbicide-treated soil and (ii) direct exposure to treated seeds. In addition, the interaction between corn ST and earwigs on the mortality of neonate larvae of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) was assessed. Seed treatments of corn, soybean, and cotton with different insecticides, as well as pre- and post-emergence herbicides, were evaluated. In microcosms, earwig survival ranged from 85% to 100% after eight days, with a notable decrease observed only in the presence of ST containing deltamethrin. Herbicide treatments showed high survival rates with no significant differences. In contrast, direct exposure to treated seeds significantly reduced earwig survival, especially for ST containing thiamethoxam, clothianidin, and fipronil, indicating a higher risk under forced exposure conditions. In bioassays using corn seeds, ST with deltamethrin and clothianidin killed more than 98% of S. frugiperda neonate larvae. In contrast, cyantraniliprole and chlorantraniliprole killed 36–52% of the larvae at 10, 20, and 30 days after planting. The presence of E. annulipes increased larval mortality to 93–98%. Overall, the results demonstrate that ST can be ecologically selective under field-simulated conditions, contribute to conservative biological control, and enhance suppression of S. frugiperda when combined with predatory insects.

COMMITTEE MEMBERS:
Presidente - JORGE BRAZ TORRES
Externo à Instituição - JÉSSICA KARINA DA SILVA PACHÚ
Externo à Instituição - ROGÉRIO LIRA