We evaluated the effects of calcium (Ca2+) and magnesium (Mg2+) ions on copper (Cu) toxicity to glochidia and newly-transformed juvenile mussels (age 1–2 days) of the Chinese pond mussel (Anodonta woodiana). Acute Cu toxicity tests were performed with glochidia for 24 h and juveniles for 96 h with measured Ca2+ concentrations of 1.1, 14, 26, 51, and 99 mg L−1, or measured Mg2+ concentrations of 2.6, 11, 21, and 39 mg L−1. The Ca2+ and Mg2+ cations provided no statistically significant protection against Cu toxicity to glochidia or juveniles. The 24-h EC50 value for glochidia was 82 μg L−1 Cu, and contrastly, 96-h EC50 value for newly-transformed juvenile mussels was as low as 12 μg L−1 Cu, implying that the juveniles of A. woodiana are more vulnerable to Cu contamination at concentrations close to currently-accepted levels.
|ジャーナル||Bulletin of Environmental Contamination and Toxicology|
|出版ステータス||出版済み - 10 1 2016|
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