Banca de QUALIFICAÇÃO: ROCIO YANET FARRO BARBARÁN

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE: ROCIO YANET FARRO BARBARÁN
DATA: 31/07/2026
HORA: 10:00
LOCAL: Anfiteatro DEN e Google MEET
TÍTULO:

Hidden costs of essential oils in integrated pest management: disruption of parasitoid performance against insecticide-resistant house flies

PALAVRAS-CHAVES:

 Insecticide resistance, Biological control, Parasitoid wasps, Host–parasitoid interaction, Integrated pest management.

PÁGINAS: 40
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Entomologia Agrícola
RESUMO:

The integration of biological control and botanical insecticides is a key component of sustainable integrated pest management (IPM), yet their compatibility remains poorly understood. We evaluated the interactions among insecticide resistance in the house fly, Musca domestica, pupal parasitoids, and plant-derived essential oils (EOs). The performance of Pachycrepoideus vindemmiae and Spalangia simplex was compared on insecticide-susceptible and insecticide-resistant house fly populations, and the direct and indirect effects of eucalyptus, citronella, holy wood, and sweet orange EOs on parasitoid survival and parasitism were assessed. Pachycrepoideus vindemmiae exhibited significantly higher parasitism rates on resistant hosts, whereas S. simplex performed similarly across host populations. Essential oils remained effective against both susceptible and resistant house fly populations, with limited evidence of cross-resistance. However, all EOs induced non-target effects on parasitoids, and susceptibility varied between species. Direct exposure to EO residues caused mortality of both parasitoids, while host-mediated exposure produced stronger impacts. Pupae treated with EO concentrations corresponding to the LC₅₀ for M. domestica significantly reduced parasitism by P. vindemmiae, with sweet orange oil causing the greatest disruption despite its relatively low direct toxicity. These findings demonstrate that behavioral and host-mediated effects of botanical insecticides can exceed their direct lethal effects on beneficial insects. Notably, the parasitoid showing the greatest potential for suppressing insecticide-resistant house fly populations was also the most vulnerable to disruption by EO-treated hosts. Our results reveal hidden costs of botanical insecticides and highlight the need for compatibility assessments that incorporate host-mediated effects when integrating natural enemies and botanical insecticides in IPM programs.

MEMBROS DA BANCA:
Externo à Instituição - OSCAR FERNANDO SANTOS AMAYA - UNIPAMPLONA (Membro)
Externo à Instituição - MAYRA CAROLINA VÉLEZ RUIZ - NENHUMA (Membro)
Externo à Instituição - MANUEL IX BALAM - UNTRM (Suplente)
Presidente - KHALID HADDI (Membro)
Interno - BRUNO HENRIQUE SARDINHA DE SOUZA (Membro)