Variation in the response of the invasive species Potamopyrgus antipodarum (Smith) to natural (cyanobacterial toxin) and anthropogenic (herbicide atrazine) stressors.
In the context of increasing freshwater pollution, the impact on life-traits (survival, growth and fecundity) and locomotion of Potamopyrgus antipodarum of a 5-week field-concentration exposure to the cyanobacterial toxin microcystin-LR and the triazine herbicide, atrazine was studied. Whatever the age of exposed snails (juveniles, subadults, adults), microcystin-LR induced a decrease in survival, growth and fecundity but had no effect on locomotion. Atrazine induced a decrease in locomotory activity but had no significant effect on the life-traits. These results are discussed in terms of consequences to field populations.
Gerard
Claudia
C
UMR CNRS Ecobio 6553, Equipe Physiologie et Ecophysiologie, Université de Rennes 1, Avenue du Général Leclerc, 35042 Rennes cedex, France. claudia.gerard@univ-rennes1.fr
Poullain
Virginie
V
D000818:Animals; D001280:Atrazine / Q000633:toxicity*; D006540:Herbicides / Q000633:toxicity*; D008018:Life Cycle Stages / Q000187:drug effects; D008124:Locomotion / Q000187:drug effects; D008387:Marine Toxins; D052998:Microcystins; D010456:Peptides, Cyclic / Q000633:toxicity*; D012908:Snails / Q000187:drug effects*; D018675:Toxicity Tests; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D006540:Herbicides; D008387:Marine Toxins; D052998:Microcystins; D010456:Peptides, Cyclic; D014874:Water Pollutants, Chemical; C057862:cyanoginosin LR; D001280:Atrazine