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On direct measurement of pumping rates in the mussel Mytilus edulis

On direct measurement of pumping rates in the mussel Mytilus edulis 227 92 92 3 3 P. Famme H. U. Riisgård C. B. Jørgensen Institute of Biology Odense University Campusvej 55 DK-5320 Odense M Denmark Zoofysiological Laboratory A August Krogh Institute Universitetsparken 13 DK-2100 Copenhagen Ø Denmark Abstract Pumping rates in Mytilus edulis L. were measured by means of a “constant-level-tank” method, in which hydrostatic pressure differences between inhalant and exhalant water levels were recorded by means of a laser beam reflected from a tethered mirror floating on the water surface. Hydrostatic pressure gradients were determined to ±0.05 mm H 2 O or better. The developed technique of directly measuring pumping rates in mussels is not subject to the artefacts of other methods. The pumping rates measured in M. edulis were substantially higher than those previously determined by means of direct techniques, but similar to the maximum filtration rates, as obtained by means of two indirect techniques, i.e. about 50 ml min -1 for a 0.15 g dry weight mussel. Positive hydrostatic pressures drastically affected water pumping. The pumping rate decreased linearly with increasing hydrostatic pressures towards a maximum pump pressure between 3 and 5 mm H 2 O. Negative pressures only affected the pumping rate slightly or insignificantly, except when the mussels were exposed to rapidly increasing negative pressures. Under this condition a shunt was presumably established between the inner demibranchs, allowing water to bypass the gills. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

On direct measurement of pumping rates in the mussel Mytilus edulis

Marine Biology , Volume 92 (3) – Aug 1, 1986

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References (10)

Publisher
Springer Journals
Copyright
Copyright © 1986 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
DOI
10.1007/BF00392672
Publisher site
See Article on Publisher Site

Abstract

227 92 92 3 3 P. Famme H. U. Riisgård C. B. Jørgensen Institute of Biology Odense University Campusvej 55 DK-5320 Odense M Denmark Zoofysiological Laboratory A August Krogh Institute Universitetsparken 13 DK-2100 Copenhagen Ø Denmark Abstract Pumping rates in Mytilus edulis L. were measured by means of a “constant-level-tank” method, in which hydrostatic pressure differences between inhalant and exhalant water levels were recorded by means of a laser beam reflected from a tethered mirror floating on the water surface. Hydrostatic pressure gradients were determined to ±0.05 mm H 2 O or better. The developed technique of directly measuring pumping rates in mussels is not subject to the artefacts of other methods. The pumping rates measured in M. edulis were substantially higher than those previously determined by means of direct techniques, but similar to the maximum filtration rates, as obtained by means of two indirect techniques, i.e. about 50 ml min -1 for a 0.15 g dry weight mussel. Positive hydrostatic pressures drastically affected water pumping. The pumping rate decreased linearly with increasing hydrostatic pressures towards a maximum pump pressure between 3 and 5 mm H 2 O. Negative pressures only affected the pumping rate slightly or insignificantly, except when the mussels were exposed to rapidly increasing negative pressures. Under this condition a shunt was presumably established between the inner demibranchs, allowing water to bypass the gills.

Journal

Marine BiologySpringer Journals

Published: Aug 1, 1986

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