INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
Should apple snail Pomacea canaliculata (Caenogastropoda, Ampullariidae) be used as bioindicator for BDE-209?
KOCH, EDUARDO; ALTAMIRANO, JORGELINA C.; COVACI, ADRIAN; LANA, NERINA B.; CIOCCO, NESTOR F.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Lugar: HEIDELBERG; Año: 2013 vol. 21 p. 761 - 761
Apple snail Pomacea canaliculata has been report- edtoaccumulatepolybrominateddiphenylethers(PBDEs)and was recently proposed as PBDE bioindicator. This work inves- tigatestheabilityofP.canaliculata toaccumulateBDE-209by dietary exposure under controlled experimental conditions. A 30-daylongenrichmentfeedingassaywascarriedoutusing30 adult apple snails, placed in individual aquaria. Food was enriched at three BDE-209 concentrations (400, 4,700, and 8,300 μgg −1 lipid weight). Correlation between BDE-209 values in food and snail tissue were estimated according to Stockholm Convention suggested criteria for chemicals with KOW >5. All animals survived with no evident physical alter- ations,andallofthemaccumulatedBDE-209.BDE-209levels in tissue samples increased exponentially with the exposure concentration. The bioaccumulation factor vs. food concentra- tion plot showed a peculiar pattern, in which at intermediate concentrations the snails accumulated less BDE-209 than expected. Our results suggest that P. canaliculata would pres- entadetoxificationmechanismforBDE-209differentfromthe most commonly reported metabolic pathways.