Sub-lethal effects of a glyphosate-based commercial formulation and adjuvants on juvenile oysters (Crassostrea gigas) exposed for 35days.

TitleSub-lethal effects of a glyphosate-based commercial formulation and adjuvants on juvenile oysters (Crassostrea gigas) exposed for 35days.
Publication TypeJournal Article
Year of Publication2017
AuthorsSéguin, A, Mottier, A, Perron, C, Lebel, JMarc, Serpentini, A, Costil, K
JournalMar Pollut Bull
Volume117
Issue1-2
Pagination348-358
Date Published2017 Apr 15
ISSN1879-3363
KeywordsAnimals, Crassostrea, Glycine, Herbicides, oxidative stress, Reproduction, Toxicity Tests
Abstract

Glyphosate-based herbicides include active matter and adjuvants (e.g. polyethoxylated tallow amines, POEAs). In addition to a previous investigation on the effect of glyphosate on oysters, the aim of the present study was to investigate the effects of sub-chronic exposures (35days) to three concentrations (0.1, 1 and 100μgL) of Roundup Express® (R) and POEAs on oysters belonging to the same age group. Low mortality rates were calculated, and only few significant differences (i.e. shell length) between exposure conditions were observed at a given date. However, when comparing the biomarker's temporal variations, some different patterns (e.g. condition index, reproduction, parameters of oxidative stress) were observed depending on the molecules and concentrations. These results suggest that a longer exposure to an environmental concentration (0.1μgL) of R and POEAs could induce harmful effects on oysters.

DOI10.1016/j.marpolbul.2017.02.028
Alternate JournalMar. Pollut. Bull.
PubMed ID28202277
Catégorie HCERES
ACL - Peer-reviewed articles
Publication coopération et recherche SUD
Non