Artículo
Effect of the insecticide chlorpyrifos on behavioral and metabolic aspects of the spider Polybetes pythagoricus
Molina, Gabriel
; Laino, Aldana
; Arrighetti, Florencia
; Lacava, Mariangeles; Romero, Sofía Micaela
; Mijailovsky, Sergio Javier
; Garcia, Carlos Fernando
Fecha de publicación:
03/2023
Editorial:
Society of Environmental Toxicology and Chemistry
Revista:
Environmental Toxicology and Chemistry
ISSN:
0730-7268
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The toxicity of pesticides to organisms depends on the total amount of chemical exposure. Toxicity can be minimized if the organism recognizes the pesticide and alters its behavior. Furthermore, the physical barrier of cuticular hydrocarbons can prevent the entrance of the pesticide into the organism. Finally, if the pesticide enters the body, the organism experiences physiological changes favoring detoxification and the maintenance of homeostasis. We analyzed the behavioral and metabolic response of the spider Polybetes pythagoricus at different times of exposure to the organophosphate pesticide chlorpyrifos. First we observed that the individuals are capable of recognizing and avoiding surfaces treated with pesticides based on a behavioral analysis. Subsequently, we characterized cuticular hydrocarbons as a possible barrier against pesticides. Then we observed that the pesticide provoked histological damage, mainly at the level of the midgut diverticula. Finally, we analyzed the activity of several of the spider's enzymes linked to oxidative stress after exposure to chlorpyrifos for different lengths of time (6, 24, and 48 h). We observed that catalase activity was high at the start, whereas the activity of superoxide dismutase and glutathione S-transferase changed significantly at 48 h. Lipid peroxidation became high at 6 h, but decreased at 48 h. In conclusion, although P. pythagoricus can avoid contact with chlorpyrifos, this pesticide causes activation of the antioxidant system when it enters the body. Our results make a significant contribution to the ecotoxicology of spiders.
Palabras clave:
CHLORPYRIFOS
,
HYDROCARBONS
,
OXIDATIVE STRESS
,
REACTIVE OXYGEN SPECIES
,
SPIDER
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Articulos(INIBIOLP)
Articulos de INST.DE INVEST.BIOQUIMICAS DE LA PLATA
Articulos de INST.DE INVEST.BIOQUIMICAS DE LA PLATA
Citación
Molina, Gabriel; Laino, Aldana; Arrighetti, Florencia; Lacava, Mariangeles; Romero, Sofía Micaela; et al.; Effect of the insecticide chlorpyrifos on behavioral and metabolic aspects of the spider Polybetes pythagoricus; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 42; 6; 3-2023; 1293-1308
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