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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Imidacloprid-mediated stress on non-Bt and Bt cotton, aphid and ladybug interaction: Approaches based on insect behaviour, fluorescence, dark respiration and plant electrophysiology

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Author(s):
Pachu, Jessica K. S. [1] ; Macedo, Francynes C. O. [2] ; da Silva, Fabia B. [2] ; Malaquias, Jose B. [3] ; Ramalho, Francisco S. [4] ; Oliveira, Ricardo F. [2] ; Godoy, Wesley A. C. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Entomol & Acarol, Av Padua Dias 11, BR-13418900 Sao Paulo - Brazil
[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Biol Sci, Av Padua Dias 11, BR-13418900 Sao Paulo - Brazil
[3] Sao Paulo State Univ UNESP, Dept Biostat, Botucatu, SP - Brazil
[4] Embrapa Algodao, Biol Control Unit, Av Osvaldo Cruz 1143, BR-58107720 Campina Grande, Paraiba - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Chemosphere; v. 263, JAN 2021.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 14/16609-7 - A multi - and interdisciplinary approach to understand spatio-temporal patterns of insect pests and design landscapes for sustainable pest management in tropical agricultural systems
Grantee:Wesley Augusto Conde Godoy
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/20380-8 - Ecological modelling of the larval dispersion of Spodoptera frugiperda (Lepidoptera: Noctuidae) on Bt cotton: implications for evolution and resistance management
Grantee:José Bruno Malaquias
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 17/21097-3 - Bee-agriculture interactions: perspectives to sustainable use
Grantee:Osmar Malaspina
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/20435-5 - Modeling with game theory of behavioral / adaptive strategies of Spodoptera frugiperda and Helicoverpa armigera in Bt crops with spatio-temporal co-occurrence
Grantee:José Bruno Malaquias
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 17/05953-7 - Ecological Modeling of the Resistance Evolution of Spodoptera frugiperda on Bt Cotton Mediated by Seed Contamination and Temperature Increasing
Grantee:José Bruno Malaquias
Support type: Scholarships abroad - Research Internship - Doctorate