Banca de QUALIFICAÇÃO: RENILSON PESSOA MORATO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : RENILSON PESSOA MORATO
DATE: 04/08/2022
TIME: 14:00
LOCAL: Departamento de agronomia-Fitossanidade-Entomologia
TITLE:

INSECTICIDE COMPATIBILITY WITH THE PREDATORY EARWIG Euborelia annulipes (LUCAS) (DERMAPTERA: ANISOLABIDIDAE) RESULTS IN ADDITIVE MORTALITY OF DIAMONDBACK MOTH

KEY WORDS:

Insecticide toxicology, chemical control, integrated control, biological control conservation

PAGES: 28
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Entomologia Agrícola
SUMMARY:

Brassica growers rely mainly on insecticides to control the diamondback moth (DBM) Plutella xylostella (L.), resulting in cases of insecticide resistance and control failure. Control and insecticide resistance management of DBM can be enhanced by preserving natural predators in brassica crops. The earwig Euborellia annulipes (Lucas) is found in brassica fields and may prey upon DBM eggs, larvae, and pupae. The insecticides azadirachtin, chlorantraniliprole, cyantraniliprole, deltamethrin, indoxacarb, methomyl, spinosad, and teflubenzuron were evaluated using several bioassays to assess mortality of earwigs and DBM, and predation of earwig upon DBM larvae and pupae. At label application rates used on brassica crops against DBM, ring-legged earwig exhibited survival >98% across all tested insecticides. At the same label rates, the highest mortality of DBM larvae confined on insecticide dry residue on Chinese cabbage leaves was maximum 61% over 24 h evaluation period, but this significantly increased up to 92% with the addition of the predator at the same evaluation period. Female earwigs showed a preference for DBM larvae over pupae irrespective of larvae:pupae availability and insecticide combinations. When only larvae or pupae were available, up to nine larvae or four DBM pupae were consumed within 24 h. At the label rate for spraying brassica crops, all tested insecticides were compatible with the rind-legged earwig and the predator added significant mortality to DBM larvae in the presence of insecticide residue. The findings reveal opportunities for integrating E. annulipes as a biological control into management programs for DBM that can not effectively rely on insecticides alone

BANKING MEMBERS:
Presidente - 1225573 - JORGE BRAZ TORRES
Interna - 2126845 - CHRISTIAN SHERLEY ARAUJO DA SILVA TORRES
Externo à Instituição - PATRIK LUIZ PASTORI - UFGD