Sensitivity of Mytilus galloprovincialis larvae to ammonia
- Battelle/Marine Sciences Lab., Sequim, WA (United States)
Free ammonia is a constituent of some marine effluents and sediments. The authors evaluated the sensitivity of the larval stage of the marine bivalve, Mytilus galloprovincialis, to concentrations of ammonium sulfate, as well as to suspended-particulate-phase (SPP) preparations of marine sediments and petroleum-based marine effluents. Mytilus larvae are commonly used test organisms because of their sensitivity to toxicants and their use in evaluation of water-column impacts of dredged material disposal. Ammonia-only EC{sub 50} values were between 3 mg/L NH{sub 3} and 8 mg/L NH{sub 3}; LC{sub 50} values ranged from 66 mg/L NH{sub 3} to 100 mg/L NH{sub 3}. Abnormalities included exogastrulation and arrested development at early gastrulation. The EC{sub 50} values for ammonia in SPP and effluents were within similar ranges, which indicates that ammonia may contribute significantly to toxicity of these materials. Exposure of larvae during different developmental stages and time periods will also be discussed.
- OSTI ID:
- 37428
- Report Number(s):
- CONF-9410273-; TRN: IM9519%%352
- Resource Relation:
- Conference: 15. annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC), Denver, CO (United States), 30 Oct - 3 Nov 1994; Other Information: PBD: 1994; Related Information: Is Part Of Society of Environmental Toxicology and Chemistry 15th annual meeting: Abstract book. Ecological risk: Science, policy, law, and perception; PB: 286 p.
- Country of Publication:
- United States
- Language:
- English
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