title: Should apple snail Pomacea canaliculata (Caenogastropoda, Ampullariidae) be used as bioindicator for BDE-209?
abstract: Apple snail Pomacea canaliculata has been reported to accumulate polybrominated diphenyl ethers (PBDEs) and was recently proposed as PBDE bioindicator. This work investigates the ability of P. canaliculata to accumulate BDE-209 by dietary exposure under controlled experimental conditions. A 30-day long enrichment feeding assay was carried out using 30 adult apple snails, placed in individual aquaria. Food was enriched at three BDE-209 concentrations (400, 4,700, and 8,300 μg g(−1) lipid weight). Correlation between BDE-209 values in food and snail tissue were estimated according to Stockholm Convention suggested criteria for chemicals with K(OW) >5. All animals survived with no evident physical alterations, and all of them accumulated BDE-209. BDE-209 levels in tissue samples increased exponentially with the exposure concentration. The bioaccumulation factor vs. food concentration 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 present a detoxification mechanism for BDE-209 different from the most commonly reported metabolic pathways.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Koch
authors.forename: Jorgelina Cecilia
authors.initials: JC
authors.lastname: Altamirano
authors.forename: Adrian
authors.initials: A
authors.lastname: Covaci
authors.forename: Nerina Belén
authors.initials: NB
authors.lastname: Lana
authors.forename: Néstor Fernando
authors.initials: NF
authors.lastname: Ciocco
mesh_terms: D000818:Animals; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000378:metabolism* / Q000633:toxicity; D055768:Halogenated Diphenyl Ethers / Q000378:metabolism* / Q000633:toxicity; D012908:Snails / Q000378:metabolism*
chemical_list: D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; C010902:decabromobiphenyl ether
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