IBBEA   24401
INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Effects of glyphosate on egg incubation, larvae hatching and ovarian re-maturation, in the estuarine crab Neohelice granulata.
Autor/es:
AVIGLIANO, LUCIANA; ÁLVAREZ, NATALIA B.; MAC LOUGHLIN, CAMILA; RODRIGUEZ, ENRIQUE M
Revista:
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Editorial:
SETAC PRESS
Referencias:
Lugar: Buenos Aires; Año: 2014 vol. 33 p. 1879 - 1884
ISSN:
0730-7268
Resumen:
Ovigerous females of the estuarine crab Neohelice granulata were exposed to both pureglyphosate (2.5 and 5 mg/L) and a glyphosate formulation (Roundup Ultramax, containing glyphosate at 2.5 mg/L acid equivalent). At the end of the egg incubation period, a significant reduction in the number of hatched larvae was seen due to Roundup exposure. Additionally, several larvae abnormalities were seen in both pure glyphosate (2.5 mg/L) and Roundup treatments, such as hydropsy and hypopigmented eyes, while atrophied eyes were also observed in the Roundup treatment. In order to evaluate the effect of the herbicide on ovarian rematuration, females remained exposed for 32 d. Pure glyphosate at 2.5 mg/L stimulated ovarian maturation over control levels, mainly in terms of a higher gonadosomatic index and a higher percentage of vitellogenic oocytes. A plausible hypothesis to be tested in further experiments is that exposure to glyphosate disrupts the hormonal system controlling reproduction.