Journal
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Volume 33, Issue 8, Pages 1879-1884Publisher
WILEY
DOI: 10.1002/etc.2635
Keywords
Glyphosate; Crab; Larvae; Ovary; Reproduction
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Funding
- National Agency for Science and Technology Promotion [ANPCYT PICT2010-0908]
- University of Buenos Aires Scientific Program [044]
- National Scientific and Technical Research Council [100884]
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Ovigerous females of the estuarine crab (Neohelice granulate) were exposed to both pure glyphosate (2.5 mg/L 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 as a result of 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, and atrophied eyes were observed in the Roundup treatment. 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. (c) 2014 SETAC
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