Banca de DEFESA: NATALY DE LA PAVA SUÁREZ

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : NATALY DE LA PAVA SUÁREZ
DATE: 02/02/2023
TIME: 13:30
LOCAL: on-line
TITLE:

INFLUENCE OF THE PRE-IMAGINAL CONDITIONING ON THE PREDATORY BEHAVIOR AND CAMOUFLAGE OF THE LADY BEETLES CRYPTOLAEMUS MONTROUZIERI MULSANT AND TENUISVALVAE NOTATA (MULSANT) (COLEOPTERA COCCINELLIDAE)

KEY WORDS:

Pre-imaginal conditioning, Pseudococcidae, physical-chemical camouflage, biological control.

PAGES: 112
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Entomologia Agrícola
SUMMARY:

The release of natural enemies is one of the most used strategies in integrated pest management, being commonly used parasitoid and insect predators. Among predators, the species Cryptolaemus montrouzieri and Tenuisvalve notata stand out, both coccinellids for being predators of mealybugs (Pseudococcidae). The mass production of these predators standardizes the breeding conditions. It generates a selection pressure that can improve or negatively affect the performance of the predator in the field after several generations of brood. Therefore, we evaluated whether the ladybugs T. notata and C. montrouzieri have a feeding preference for the mealybugs on which they were reared, what the metabolic cost associated with the production of wax in the larval phase of these predators, and whether there is an effect of the chemical composition of the wax in the predator-prey interaction, using, in this case, the mealybugs Ferrisia dasylirii and Planococcus citri as a biological model. It was observed that both ladybugs responded similarly to the volatiles released by both of the offered prey.

Furthermore, there were no changes in predator behavior in relation to prey cues. Also, both predator species consumed more P. citri in laboratory and semi-field tests, regardless of the prey they were reared on, indicating no pre-imaginal conditioning of the predator. Regarding the wax production strategy, it was shown that there is a metabolic cost associated with its removal, the predators showed a significant reduction in adult body weight when the wax was removed, as well as in the fecundity and viability of the eggs. Finally, the results showed that the predator-prey interaction does not affect the wax profiles of the predator's body, as they are not similar to the chemical profiles of the wax prey.

COMMITTEE MEMBERS:
Presidente - CHRISTIAN SHERLEY ARAUJO DA SILVA TORRES
Externa à Instituição - MARIA CAROLINA BLASSIOLI MORAES
Externo à Instituição - JOSÉ MAURÍCIO SIMÕES BENTO
Externo à Instituição - ERALDO RODRIGUES DE LIMA
Externa à Instituição - JENNIFER OBERGER FERREIRA