Banca de DEFESA: MARIA ROSARIO PINEDA ARTEAGA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE: MARIA ROSARIO PINEDA ARTEAGA
DATA: 09/01/2024
HORA: 14:00
LOCAL: Anfiteatro do DEN e google meet
TÍTULO:

TOXICOLOGY AND SUBLETHAL EFFECTS OF SYNTHETIC AND BOTANICAL INSECTICIDES FOR THE CONTROL OF Drosophila suzukii (Mastsumura, 1931) (DIPTERA: DROSOPHILIDAE)

PALAVRAS-CHAVES:

Spotted wing drosophila, toxicology, essential oil, morphometry

PÁGINAS: 176
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitossanidade
ESPECIALIDADE: Entomologia Agrícola
RESUMO:

The spotted wing drosophila (SWD), Drosophila suzukii (Matsumura, 1931) (Diptera: Drosophilidae), considered a polyphagous pest of Asian origin, prefers to attack red fruits. This investigation aimed to identify alternative chemical compounds to spinetoram, such as organophosphates, pyrethroids, neonicotinoids, spinosins, pyrroles, and diamides, two essential oils: Eucalyptus globulus; Citrus sinensis (L.), and a major compound (R)-(+)-Limonene for controlling adult D. suzukii. Additionally, bioassays were conducted to determine the effect of sublethal concentrations of spinosins, eucalyptus, orange essential oils, and the major compound (R)-(+)-Limonene. Finally, we determined the effect of temperature on the biological cycle and the main morphological characteristics of the species (wings, thorax, and ovipositor). First, bioassays were performed using adult flies from the Molecular Entomology and Ecotoxicology (MEET) laboratory stock. Adult flies (5-7 days) were orally exposed to the compounds to determine dose-response curves under controlled conditions (23-25°C; 60-65% RH, 12h scotophase). Subsequently, adults were exposed to determine sublethal effects on spinosins (LC5, LC10, and LC20), eucalyptus EO (LC5, LC20), orange EO, and its parental compound (LC1, LC5, LC10, and LC20). Later, we evaluated adult longevity, female fecundity, and the body mass of newly emerged adults. Finally, two populations of adult D. suzukii were acclimated (20 and 25°C), and monitoring was carried out every 5 generations, from F10 to F30. We determined the life cycle, body mass, and longevity of adults, and quantified morphometric parameters related to phenotypic plasticity: body size (thorax measurements), compression, area length, wing shape and size, spot area in males, compression, and number of ovipositor teeth in females. Finally, we confirmed that temperature has an effect on the phenotypic plasticity of this species, resulting in morphological alterations and the emergence of morphotypes that readily adapt to various environmental conditions, ensuring reproductive success and the invasive capacity of this species.

MEMBROS DA BANCA:
Externo à Instituição - ALEXANDER HUAMAN MERA - UNJ (Membro)
Externo à Instituição - ALEXANDRE DOS SANTOS - IFMT (Suplente)
Presidente - KHALID HADDI (Membro)
Interno - LETICIA MARIA VIEIRA (Suplente)
Externo à Instituição - MARCUS ALVARENGA SOARES - UFVJM (Membro)
Externo à Instituição - OSCAR FERNANDO SANTOS AMAYA - UNIPAMPLONA (Membro)
Externo à Instituição - RICARDO SIQUEIRA DA SILVA - UFVJM (Membro)