Survival and Growth of Juvenile Neanthes arenaceodentata (Annelida: Polychaeta) in Marine Sediment Taken from the Vicinity of an Ocean Outfall
Gerlinger, Thomas V.
Reish, Donald J.
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Screened sediments taken from the vicinity of the County Sanitation <br /><br />Districts of Orange County, CaHfomia (Districts) ocean outfall were tested for <br /><br />toxicity to the polychaetous annelid Neanthes arenaceodentata. Survival and growth <br /><br />after exposure to sediments were used as the end points. Experiments subjected <br /><br />juvenile worms (2-3 week, post-emergent) taken from a laboratory inbred pop- <br /><br />ulation, to different test sediments for a 20-day period. Statistical comparisons <br /><br />between results from a test station versus different control sediments and clean <br /><br />seawater control were made. Although there were differences in overall growth <br /><br />between each experiment, individual survival, growth and daily average growth <br /><br />rate, indicated that the sediments from the vicinity outfall were not toxic to <br /><br />Neanthes arenaceodentata.