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- Title
The combined effects of microbial insecticides and sodium chloride on the development and emergence of Chironomus xanthus.
- Authors
Dornelas, Aline Silvestre Pereira; Pestana, João L.T.; de Souza Saraiva, Althiéris; Barbosa, Rone Silva; Cavallini, Grasiele Soares; Gravato, Carlos; da Maia Soares, Amadeu Mortágua Velho; Sarmento, Renato Almeida
- Abstract
Background: Freshwater organisms are facing increasing salinity levels, not only due to natural environmental processes, but also human activities, which can cause several physiological adaptations to osmotic stress. Additionally, these organisms might also have to deal with contamination by microbial insecticides. Our main goal was to use Chironomus xanthus to assess the chronic effects of increasing the salinity and commercial formulations of the microbial insecticides based on Bacillus thuringiensis subs. kurstaki (Btk) and Beauveria bassiana (Bb) as active ingredients, respectively. Results: A significant interaction of growth was observed between the biopesticide based on Bb and NaCl on the larvae of C. xanthus. Single exposure to NaCl and each one of the formulations demonstrated deleterious impacts not only on larval development, but also on the emergence success and emergence time of this nontarget insect, with potential consequences for freshwater ecosystems due to cascading effects. Conclusion: The chronic effects induced by both bioinsecticides show that these formulations can have environmental impacts on nontarget freshwater insects. © 2023 Society of Chemical Industry.
- Subjects
SOCIETY of Chemical Industry (Great Britain); INSECTICIDES; CHIRONOMUS; SALT; MICROBIAL contamination; EFFECT of salt on plants; BIOPESTICIDES; BIOLOGICAL insecticides
- Publication
Pest Management Science, 2023, Vol 79, Issue 6, p2255
- ISSN
1526-498X
- Publication type
Article
- DOI
10.1002/ps.7407