Pachu, Jessica K. S.
Macedo, Francynes C. O.
da Silva, Fabia B.
Malaquias, Jose B.
Ramalho, Francisco S.
Oliveira, Ricardo F.
Godoy, Wesley A. C.
Total Authors: 7
 Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Entomol & Acarol, Av Padua Dias 11, BR-13418900 Sao Paulo - Brazil
 Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Biol Sci, Av Padua Dias 11, BR-13418900 Sao Paulo - Brazil
 Sao Paulo State Univ UNESP, Dept Biostat, Botucatu, SP - Brazil
 Embrapa Algodao, Biol Control Unit, Av Osvaldo Cruz 1143, BR-58107720 Campina Grande, Paraiba - Brazil
Total Affiliations: 4
Web of Science Citations:
Plants and insects are parts of a complex system that involves interactions among many trophic levels, and it is important to understand the nature of such interactions. In the complex of interactions involving aphids and transgenic cotton expressing Bacillus thuringiensis, both the spraying of neonicotinoids and the occurrence of predatory coccinellids are common. However, there are gaps regarding the knowledge about possible impacts of neonicotinoids on physiological variables of the host plant and behavioural traits of the aphid (Aphis gossypii) and predator (Cycloneda sanguinea). Therefore, this study aimed to highlight the photosynthetic and electrical responses of the plant to the stress caused by the aphid attack combined with the stress generated by the use of imidacloprid in Bt and non-Bt cotton (Gossypium hirsutum L.) cultivars and to evaluate how this stress can influence the behavioural ecology of the predator and prey. Chlorophyll a fluorescence tests, dark respiration and electrophysiology on non-Bt and Bt cotton were carried out, the behaviour of the prey and predator was also evaluated with a video capture system. Our research is a study model that generates insights about possible impacts when using Imidacloprid without the occurrence of the pest on the plant, because the exposure of non-Bt and Bt cotton plants and the predator to imidacloprid unnecessarily, may result in stress on the physiology of the cotton plants and on the behaviour of the predator. (C) 2020 Elsevier Ltd. All rights reserved. (AU)