Fecha/hora: 23/05/2024 13:20:33

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	08/02/2023	
Fecha de la última actualización: 	08/02/2023	
Autoria: 	CASTELLI, L.; BRANCHICCELA, B.; ZUNINO, P.; ANTÚNEZ, K.	
Afiliación: 	LORELEY CASTELLI, Laboratorio de Microbiología y Salud de las Abejas, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Avda. Italia 3318, Montevideo 11600, Uruguay; MARIA BELEN BRANCHICCELA CORREA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PABLO ZUNINO, Laboratorio de Microbiología y Salud de las Abejas, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Avda. Italia 3318, Montevideo 11600, Uruguay; KARINA ANTÚNEZ, Laboratorio de Microbiología y Salud de las Abejas, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Avda. Italia 3318, Montevideo 11600, Uruguay.	
Título: 	Insights into the effects of sublethal doses of pesticides glufosinate-ammonium and sulfoxaflor on honey bee health-	
Año de publicación: 	2023	
Fuente/Imprenta: 	Science of The Total Environment, 2023, Volume 868, article 161331. doi: http://dx.doi.org/10.1016/j.scitotenv.2022.161331	
ISSN: 	0048-9697	
DOI: 	10.1016/j.scitotenv.2022.161331	
Idioma: 	Inglés	
Notas: 	Article history: Received 30 September 2022; Received in revised form 27 December 2022; Accepted 29 December 2022; Available online 7 January 2023. -- Corresponding author: Antúnez, K.; Laboratorio de Microbiología y Salud de las Abejas, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Avda. Italia 3318, Montevideo, Uruguay; email:kantunez03@gmail.com -- Editor: Rafael Mateo Soria. --	
Contenido: 	ABSTRACT.- Insect pollinators are threatened worldwide, being the exposure to multiple pesticides one of the most important stressor. The herbicide Glyphosate and the insecticide Imidacloprid are among the most used pesticides worldwide, although different studies evidenced their detrimental effects on non-target organisms. The emergence of glyphosate-resistant weeds and the recent ban of imidacloprid in Europe due to safety concerns, has prompted their replacement by new molecules, such as glufosinate-ammonium (GA) and sulfoxaflor (S). GA is a broad-spectrum and non-selective herbicide that inhibits a key enzyme in the metabolism of nitrogen, causing accumulation of lethal levels of ammonia; while sulfoxaflor is an agonist at insect nicotinic acetylcholine receptors (nAChRs) and generates excitatory responses including tremors, paralysis and mortality. Although those molecules are being increasingly used for crop protection, little is known about their effects on non-target organisms. In this study we assessed the impact of chronic and acute exposure to sublethal doses of GA and S on honey bee gut microbiota, immunity and survival. We found GA significantly reduced the number of gut bacteria, and decreased the expression of glucose oxidase, a marker of social immunity. On the other hand, S significantly increased the number of gut bacteria altering the microbiota composition, decreased the expression of lysozyme and increased the expression of hymenoptaecin. These alterations in gut microbiota and immunocompetence may lead to an increased susceptibility to pathogens. Finally, both pesticides shortened honey bee survival and increased the risk of death. Those results evidence the negative impact of GA and S on honey bees, even at single exposition to a low dose, and provide useful information to the understanding of pollinators decline. © 2022	
Palabras-Clave: 	Glufosinate-ammonium; Gut microbiota; Honey bee; Immune system; Sulfoxaflor; Weed control.	
Thesagro: 	APICULTURA; APIS MELLIFERA; MIEL.	
Categoría del tema: 	H10 Plagas de las plantas	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (103304-1) - PXI - AP - DD - Science of the Total Environment/2023 -  -  - DIS