Culture and Toxicity Tests Using Los Angeles District Bioassay Animals, Acanthomysis and Neanthes
Abstract
This study describes culture techniques and results of toxicant bioassays using the California mysid, Acanthomysis sculpta, the polychaete, Neanthes arenaceodentata, and the gulf cost mysid, Mysidopsis bahia. The mysids were tested with three toxicants: dodecyl sodium sulfate (DSS), also known as sodium laurel sulfate; mercury (Hg); and polychlorinated biphenyls (PCB). The LC50 value at 72 hr for DSS showed the California mysid (0.96 ppm) more sensitive to this standard toxicant than the gulf coast mysid (3.80 ppm. Results of the Hg bioassays indicated that the California mysid was more tolerant of Hg than the gulf coast mysid. It appears that the California mysid, in comparison to the gulf coast mysid, was more sensitive to DSS, but less sensitive to Hg. Results from PCB (Aroclor 1254) bioassays showed relatively little difference between species (A. sculpta - 12.5 ppb; M. bahia - 14.2 ppb - LC50 at 72 hr). Neanthes arenaceodentata were hold in the laboratory according to established procedures and exposed only to only one toxicant, DSS. In comparison to the mysids, the polychaete (8.0 ppm - LC50 at 72 hr) was not as sensitive to DSS. The Section 103 Implementation Manual recommends the gulf coast mysid as an internal standard for dredged material bioassays. Results from this study indicate that both the California mysid and the polychaete are also acceptable bioassay animals, and could be used for dredged material or other toxicity testing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1985
- Accession Number
- ADA165468
Entities
People
- A. S. Portzer
- Henry E. Tatem