| Title | Lifetime Response of Contemporary Versus Resurrected Daphnia galeata Sars (Crustacea, Cladocera) to Cu(II) Chronic Exposure |
| Abstract | Resurrecting legacy lineages of organisms from sediment cores of known geological age allows us to understand how environmental change can cause selection pressures that constrain the variation of populations over time. We quantified the lifetime tolerance and effects of Cu(II) exposure on Daphnia galeata in a polluted subalpine lake by comparing extant individuals with those resurrected from ephippia extracted from ca. 30-years-old sediments. Laboratory experiments were conducted using two Cu(II) concentrations, 40 and 10 A mu g L-1, corresponding to the levels recorded in the lake, during chemical recovery, when Daphnia first re-appeared and succeeded. Contemporary Daphnia were unable to survive after the 10th day at either of the Cu(II) concentrations, and were unable to successfully reproduce. Daphnia cohorts from the past performed better in low Cu(II) concentrations than in copper-free, control conditions. The copper-adapted, tolerant Daphnia strains grew faster under non-toxic conditions, but were unable to survive new pollution events. |
| Source | Bulletin of environmental contamination and toxicology 94 (1), pp. 46–51 |
| Keywords | Resurrection ecologyNeo- and paleoecotoxicologyLife strategiesCopper ecotoxicityDaphnia galeata |
| Journal | Bulletin of environmental contamination and toxicology |
| Editor | Springer Science and Business Media, New York, NY, Stati Uniti d'America |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1007/s00128-014-1413-4 |
| Authors | Piscia, Roberta; Colombini, Maria; Ponti, Benedetta; Bettinetti, Roberta; Monticelli, Damiano; Rossi, Valeria; Manca, Marina |
| Text | 373779 2015 10.1007/s00128 014 1413 4 ISI Web of Science WOS 000347248300009 Resurrection ecology Neo and paleoecotoxicology Life strategies Copper ecotoxicity Daphnia galeata Lifetime Response of Contemporary Versus Resurrected Daphnia galeata Sars Crustacea, Cladocera to Cu II Chronic Exposure Piscia, Roberta; Colombini, Maria; Ponti, Benedetta; Bettinetti, Roberta; Monticelli, Damiano; Rossi, Valeria; Manca, Marina CNR ISE; Department of Science and High Technology, University, of Insubria, Via Valleggio, 11, Como; Department of Life Sciences, University of Parma Resurrecting legacy lineages of organisms from sediment cores of known geological age allows us to understand how environmental change can cause selection pressures that constrain the variation of populations over time. We quantified the lifetime tolerance and effects of Cu II exposure on Daphnia galeata in a polluted subalpine lake by comparing extant individuals with those resurrected from ephippia extracted from ca. 30 years old sediments. Laboratory experiments were conducted using two Cu II concentrations, 40 and 10 A mu g L 1, corresponding to the levels recorded in the lake, during chemical recovery, when Daphnia first re appeared and succeeded. Contemporary Daphnia were unable to survive after the 10th day at either of the Cu II concentrations, and were unable to successfully reproduce. Daphnia cohorts from the past performed better in low Cu II concentrations than in copper free, control conditions. The copper adapted, tolerant Daphnia strains grew faster under non toxic conditions, but were unable to survive new pollution events. 94 Published version Articolo Bull_Environ_Contam_Toxicol_2015_94_46_51.pdf Articolo in rivista Springer Science and Business Media 0007 4861 Bulletin of environmental contamination and toxicology Bulletin of environmental contamination and toxicology Bull. environ. contam. toxicol. Bulletin of environmental contamination and toxicology. Bulletin of environmental contamination and toxicology Print roberta.piscia PISCIA ROBERTA marinamarcella.manca MANCA MARINA MARCELLA |
