title: Acclimatory processes are likely responsible for metal tolerance in oyster embryos.
abstract: We aimed to determine if offspring of oysters from contaminated locations were more tolerant to metals, and whether this tolerance could be attributed to acclimation. Oysters from 10 estuaries were sampled, representing a gradient in metal contamination. Tolerance to metals of the F1offspring from adults residing in these estuaries was assessed. Then, adults from these estuaries were translocated to a single estuary and their offspring tolerance reassessed. No linear relationship was found between the Cu concentrations of adults and their offspring's tolerance to Cu. A positive linear relationship was found between the Zn concentration of adults and the Zn EC50's of their offspring. Zn tolerance was lost after translocation. Zn EC50values of offspring from transplanted adults bore no relation to the Zn EC50's of their location of origin. Thus the initial tolerance observed could be attributed to acclimation transferred to the F1generation.
authors.affiliation: School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Faculty of Science and Technology, Kanchanaburi Rajabhat University, Muang District, Kanchanaburi, 7100 Thailand.
authors.forename: Thanvapon
authors.initials: T
authors.lastname: Yingprasertchai
authors.affiliation: School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
authors.forename: Richard Man Kit
authors.initials: RMK
authors.lastname: Yu
authors.affiliation: New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, NSW 2316, Australia.
authors.forename: Wayne A
authors.initials: WA
authors.lastname: O'Connor
authors.affiliation: School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
authors.forename: Tegan
authors.initials: T
authors.lastname: Hopwood
authors.affiliation: School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia. Electronic address: Geoff.MacFarlane@newcastle.edu.au.
authors.forename: Geoff R
authors.initials: GR
authors.lastname: MacFarlane
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D004784:Environmental Monitoring; D008670:Metals / Q000378:metabolism / Q000633:toxicity*; D010125:Ostreidae / Q000502:physiology*; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical
keywords: Acclimation; Copper; Metals; Sydney rock oyster; Zinc