期刊
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
卷 36, 期 1, 页码 212-219出版社
WILEY
DOI: 10.1002/etc.3530
关键词
Corals; Marine toxicity tests; Polycyclic aromatic hydrocarbons (PAHs); 1-methylnaphthalene; Passive dosing
资金
- Clean Caribbean and Americas
Previous research evaluating hydrocarbon toxicity to corals and coral reefs has generally focused on community-level effects, and results often are not comparable between studies because of variability in hydrocarbon exposure characterization and evaluation of coral health and mortality during exposure. Toxicity of the polycyclic aromatic hydrocarbon 1-methylnaphthalene to the coral Porites divaricata was assessed in a constant exposure toxicity test utilizing a novel toxicity testing protocol uniquely applicable to shallow-water corals, which considered multiple assessment metrics and evaluated the potential for post-exposure mortality and/or recovery. Acute and subacute effects (gross morphological changes, photosynthetic efficiency, mortality, and histologic cellular changes) were evaluated during pre-exposure (4wk), exposure (48h), and post-exposure recovery (4wk) periods. Coral condition scores were used to determine a 48-h median effective concentration of 7442g/L. Significant physical and histological changes resulted from exposure to 640g/L and 5427g/L 1-methylnaphthalene, with a 1-d to 3-d delay in photosynthetic efficiency effects (F/Fm). Pigmented granular amoebocyte area was found to be a potentially useful sublethal endpoint for this species. Coral mortality was used to estimate a 48-h median lethal concentration of 12123g/L. Environ Toxicol Chem 2017;36:212-219. (c) 2016 SETAC
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