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Artículo

Effects of atrazine on ovarian growth, in the estuarine crab Neohelice granulata

Silveyra, Gabriela RominaIcon ; Canosa, Ivana SofíaIcon ; Rodriguez, Enrique MarceloIcon ; Medesani, Daniel AlbertoIcon
Fecha de publicación: 02/2017
Editorial: Elsevier Science Inc
Revista: Comparative Biochemistry And Physiology. Toxicology & Pharmacology
ISSN: 1532-0456
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Atrazine, a herbicide that is intensively used in Argentina, was assayed to evaluate the alteration of reproduction in a wild species of crustaceans. Adult females of the estuarine crab Neohelice granulata were exposed to formulated atrazine during the 3-month pre-reproductive period. Three atrazine concentrations (0.03, 0.3 and 3 mg/L) were assayed, together with a water dilution control. At the end of the exposure period, several variables concerning the energetic status of animals were measured, such as weight gain, glycemia, and energy reserves in both muscle and hepatopancreas. The gonadosomatic index (GSI) was also determined, as well as the proportion and relative area of each oocyte type in histological sections. Besides, the total content of vitellogenin proteins (Vg) in both ovary and hepatopancreas was measured. A significant (p < 0.05) decrease of glycogen content was observed in muscle, while a significant (p < 0.05) lower area of both previtellogenic and vitellogenic oocytes was verified in the ovary by effect of atrazine, in correspondence with a Vg content significantly (p < 0.05) diminished in the ovary and augmented in the hepatopancreas. Besides, a higher proportion of previtellogenic oocytes were seen by effect of atrazine. Taken together, these results indicate a clear reduction and delay in the ovarian growth of the studied species, during the period at which the ovary normally grows up prior to spawning. On the other hand, a decrease of Vg content was observed at 0.3 and 3 mg/L of atrazine after 24-h in vitro assays carried out with ovarian explants, providing additional evidence about the inhibitory role of this herbicide on the ovarian growth. These results encourage future research on deleterious effects of atrazine on crustacean reproduction.
Palabras clave: Atrazine , Crabs , Ovary , Reproduction , Vitellogenin
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/63716
URL: http://www.sciencedirect.com/science/article/pii/S1532045616301466
DOI: http://dx.doi.org/10.1016/j.cbpc.2016.10.011
Colecciones
Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Citación
Silveyra, Gabriela Romina; Canosa, Ivana Sofía; Rodriguez, Enrique Marcelo; Medesani, Daniel Alberto; Effects of atrazine on ovarian growth, in the estuarine crab Neohelice granulata; Elsevier Science Inc; Comparative Biochemistry And Physiology. Toxicology & Pharmacology; 192; 2-2017; 1-6
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