The marine polychaete worm Neanthes arenaceodentata has been used for a number of years to assess the toxicity of contaminated marine sediments to benthic organisms. Regulatory programs in several countries assess effects on Neanthes survival and growth in 10 to 28-day exposures to determine the suitability of contaminated dredged material for open water disposal. The polychaete has also been used to assess bioaccumulation of contaminants, trophic transfer of contaminants up the food chain, and even effects of contaminants on feeding rate. Links to specific protocols are available on the testing protocols page.
The Neanthes arenaceodentata we supply are descendants of the culture maintained by Dr. Don Reish at California State University Long Beach. The original organisms were collected from the Los Angeles, California area in the 1960s.
The polychaetes are maintained in filtered seawater collected at a clean site in Puget Sound. The water is analyzed for priority pollutants annually, and results can be provided upon request. The salinity is maintained at 28 to 32 ppt, the temperature at 20 to 22 Celsius and the light cycle at 14:10 L:D. The polychaetes are fed a diet of dried and ground Ulva spp., frozen Ulva intestinalis, and/or rabbit chow slurry, depending upon age and reproductive status.
We provide polychaetes for testing that are 2 to 3 weeks post emergence, but can provide other ages upon request. Please call or email for pricing and availability.