Direct measurement technique for determining ventilation rate in the deposit-feeding clam Macoma nasuta (bivalvia, tellinaceae)

Technical Report · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5029628

Specht, D T; Lee, H

An exposure chamber, the 'clambox', was developed to measure ventilation rate, sediment processing rate, and efficiency of pollutant uptake by Macoma nasuta, Conrad, a surface-deposit-feeding clam. Clams, collected from Yaquina Bay, Oregon, USA, were cemented into a hole in a piece of rubber dental dam so that the inhalant siphons were separated by a membrane. The dental dam was then clamped between two glass chambers. The inhalant and exhalant siphons were thus diirected into separate chambers of the device so that the amount of water or feces discharged into the exhalant camber provided direct measure ventilation rate and sediment processing rate, respectively. The short-term pattern was for ventilation to be intermittently interrupted, essentially ceasing for 12 to 120 min, followed by a short period of active ventilation and then a resumption of the normal rate.

• Research Organization: Environmental Protection Agency, Newport, OR (USA). Mark O. Hatfield Marine Science Center
• OSTI ID: 5029628
• Report Number(s): PB-90-125733/XAB; EPA-600/J-89/142
• Resource Relation: Other Information: Pub. in Marine Biology, Vol. 101, 211-218(1989)
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
CLAMS
RESPIRATION
WATER POLLUTION
ENVIRONMENTAL EXPOSURE
BIOASSAY
EXPERIMENTAL DATA
EXPOSURE CHAMBERS
FEEDING
OREGON
TOXICITY
ANIMALS
AQUATIC ORGANISMS
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FEDERAL REGION X
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INVERTEBRATES
MOLLUSCS
NORTH AMERICA
NUMERICAL DATA
POLLUTION
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