Silica sand as an artificial control sediment in a 20 day Neanthes arenaceodentata toxicity test.
The use of artificial control sediments in toxicity tests offers several advantages over field-collected control sediments, especially for laboratory-cultured organisms such as Neanthes arenaceodentata. Ten side-by-side trials were conducted using a field-collected sediment from West Beach, Whidbey Island, Washington State, USA and an artificial sediment composed of a silica quartz sand commonly used for masonry applications. After a 20-d exposure to sediment and clean overlying seawater, a similar biological response (as measured by the final average individual dry weight of Neanthes) was observed. The average individual dry weight was 14.77 +/- 3.83 and 14.70 +/- 3.57 mg/worm for the artificial and field-collected negative controls, respectively.
McDonald
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BG
EVS Environment Consultants, North Vancouver, BC, Canada. bmcdonald@evs-environment.com
Haynes
P A
PA
D000818:Animals; D000845:Annelida / Q000254:growth & development*; D004784:Environmental Monitoring / Q000592:standards*; D019015:Geologic Sediments; D012822:Silicon Dioxide; D018675:Toxicity Tests / Q000592:standards*
D012822:Silicon Dioxide