Artículo
Interference of an atrazine commercial formulation with the endocrine control of ovarian growth exerted by the eyestalks
Silveyra, Gabriela Romina
; Canosa, Ivana Sofía
; Zanitti, Marina
; Rodriguez, Enrique Marcelo
; Medesani, Daniel Alberto
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Fecha de publicación:
11/2019
Editorial:
Springer Heidelberg
Revista:
Environmental Science and Pollution Research
ISSN:
0944-1344
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Atrazine is currently one of the most used herbicides worldwide. We tested the possible effect of the widely used herbicide atrazine on the endocrine control of ovarian growth exerted by the neurohormones secreted at the eyestalk of the estuarine crab Neohelice granulata. For this, both in vivo and in vitro assays were carried out. The in vivo assay comprised the exposure for 1 month to 3 mg/L of a commercial formulation containing 90% of atrazine as active ingredient (Gesaprim 90 WDG®, Syngenta) on three categories of females: intact, ablated of one eyestalk, and ablated of both eyestalks. At the end of the assay, only the intact females showed a significant (p < 0.05) decrease in both content of vitellogenic ovarian proteins and proportion of vitellogenic oocytes, compared to a concurrent control. The results of the in vitro incubation of ovarian pieces with the eventual addition to the incubation medium of eyestalk tissue and/or atrazine at 3 mg/L showed a significant (p < 0.05) decrease in the proportion of vitellogenic oocytes only when atrazine and eyestalk tissue were added. Taken together, these results strongly suggest that the assayed atrazine formulation may act as an endocrine disruptor at the eyestalk level, by altering the normal secretion of some eyestalk hormone, therefore inhibiting ovarian growth.
Palabras clave:
ATRAZINE
,
CRUSTACEANS
,
EYESTALK NEUROHORMONES
,
OVARIAN GROWTH
,
VITELLOGENIN
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Colecciones
Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Citación
Silveyra, Gabriela Romina; Canosa, Ivana Sofía; Zanitti, Marina; Rodriguez, Enrique Marcelo; Medesani, Daniel Alberto; Interference of an atrazine commercial formulation with the endocrine control of ovarian growth exerted by the eyestalks; Springer Heidelberg; Environmental Science and Pollution Research; 27; 1; 11-2019; 965-973
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