Chronic sublethal effects of San Francisco Bay sediments on Nereis (neanthes) arenaceodentata: Non treatment factors. Final report

Technical Report · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:6657750

Moore, D W; Dillon, T M

Initial development of a chronic sublethal sediment bioassay with the polychaete Nereis (Neanthes) arenaceodentata is described. The test was initiated with 2 to 3-week-old postemergent juvenile worms and terminated after 21 days. The sublethal test end point was estimated individual somatic growth rate (milligrams dry weight/day). The potential bias due to selected nontreatment factors on polychaete survival and growth was evaluated. For example, grain size had no effect, while the number of worms added to each exposure vessel was critical. Direct transfer from 30 ppt to salinities < or = ppt had a highly significant and adverse effect on survival and growth. Both survival and growth of juvenile worms may be adversely affected if test conditions involve exposures to > or = mg/L ammonia or > or = mg/L hydrogen sulfide.... Chronic, Growth, Neanthes, Sediment, Sublethal.

• Research Organization: Army Engineer Waterways Experiment Station, Vicksburg, MS (United States). Environmental Lab.
• OSTI ID: 6657750
• Report Number(s): AD-A-259400/0/XAB; WES/MP/D--92-4
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540350 -- Environment
Aquatic-- Site Resource &amp; Use Studies-- (1990-)
560300* -- Chemicals Metabolism &amp; Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
BIOASSAY
BIOLOGICAL EFFECTS
CHALCOGENIDES
CRYSTAL STRUCTURE
ELEMENTS
EVALUATION
GRAIN SIZE
GROWTH
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MICROSTRUCTURE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
PACIFIC OCEAN
POLLUTION
RESEARCH PROGRAMS
SAN FRANCISCO BAY
SEAS
SEDIMENTS
SIZE
SULFIDES
SULFUR COMPOUNDS
SURFACE WATERS
WATER POLLUTION