Trent University Graduate Thesis Collection

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    Variable Sensitivity of Growth Rate to Calcium Limitation and Sodium Chloride Toxicity Tolerance Among Populations of Daphnia pulicaria from Kawartha Highland Lakes

    Year: 2025, 2025
    Member of: Trent University Graduate Thesis Collection
    Name(s): Creator (cre): Cook, Sarah Katelyn, Thesis advisor (ths): Frost, Paul C, Degree committee member (dgc): Shafer, Aaron BA, Degree committee member (dgc): Hossie, Thomas J, Degree granting institution (dgg): Trent University
    Abstract: <p>Calcium (Ca) limitation and sodium chloride (NaCl) toxicity tolerance are potential controllers of Daphnia populations. D. pulicaria neonates collected from 14 Kawartha Highland lakes were exposed to 6 Ca concentrations (0.5-5.0 mg Ca L-1) over 6 days. We did not find differences in maximum mass-specific growth rate or half-maximum thresholds between source lakes. Growth rates were… more