Detalhes bibliográficos
| Ano de defesa: |
2019 |
| Autor(a) principal: |
LIRA, Aline Cristina Silva
 |
| Orientador(a): |
TEIXEIRA, Valéria Wanderley |
| Banca de defesa: |
TEIXEIRA, Álvaro Aguiar Coelho,
CUNHA, Franklin Magliano da,
TORRES, Jorge Braz,
GUEDES, Carolina Arruda |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Entomologia Agrícola
|
| Departamento: |
Departamento de Agronomia
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8369
|
Resumo: |
Considering the tritrophic interaction plant/prey/predator, the present study aimed to analyze the impact of occasional plant feeding on chemical composition of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) fed on Alabama argillacea (Hübner) (Lepidoptera: Erebidae) larvae and supplemented with cotton leaves, as well as the side-effects of insecticide associated to tritrophic interactions on physiological processes of the predator when feeding upon prey fed on plants sprayed with lufenuron. To evaluate the impact of the plant feeding, the chemical contents and weight of predator, prey and cotton leaves and and weight of insects were analyzed. For the lufenuron effect, we analyzed the nutritional and morphological changes in the midgut of the predator, as well as the possible parameters related to feeding behavior and nutrition of fourth and fifth instar nymphs of P. nigrispinus exposed indirectly to the insecticide lufenuron in concentration of 50 g.i.a./ha. Parameters such as the predator consumption rate, prey preference, survival of the predator and weight and nutritional aspects of the prey were evaluated. Nymphs fed on A. argillacea plus cotton leaves, had greater protein, sugar and glycogen contents and body weight when compared to nymphs fed only on prey. Indirect exposure to lufenuron affected nutritional composition of the predator and prey, promoted cellular disorganization and desquamation, lysis of the midgut epithelium of P. nigrispinus, apart from mortality of nymphs, not reaching adulthood. On the results obtained, we can infer that cotton leaves represent in fact a nutritional supplementation, afecting the nutritional composition in nymphs of P. nigrispinus and the nutritional, behavioral and biological parameters of the nymphs of the predator are affected by indirect ingestion of insecticide lufenuron. However, we suggest that the morphological changes in midgut of P. nigrispinus emerge as a dominant factor to the changes observed in the nutritional composition of the predator. |
