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Filter-feeding ethology of benthic invertebrates (Ascidians). III. Recording of water current in situ — Rate and rhythm of pumping

Filter-feeding ethology of benthic invertebrates (Ascidians). III. Recording of water current in... 227 45 45 2 2 A. Fiala-Médioni Laboratoire Arago Université Paris VI Banyuls-sur-Mer France Abstract Water current in 4 species of ascidians ( Ascidia mentula Müller, 1776; Phallusia mammillata Cuvier, 1815; Styela plicata (Lesueur, 1823) and Microcosmus sabatieri Roule, 1885) has been recorded for the first time in situ with hot film probes. The mathematical treatment of probe calibration has allowed the evaluation of the characteristics of currents (minimal, maximal and average velocities) and the calculation of pumping rates. The method utilized yields qualitative and quantitative results: Pumping is continuous, and no particular rhythm shows up in the curves obtained. The velocity of the current does not change in the course of a recording, but it can vary from one experiment to another in the same individual; these variations are related to the variability of the diameter of the cloacal siphon rather than to a change in the rhythm of the ciliary activity. The average velocities are 3.42 cm sec -1 for A. mentula , 3.92 for P. mammillata , 3.30 for S. plicata and 3.79 for M. sabatieri . The pumping rates are fairly constant for the same individual. The means, expressed as ml x h -1 x g -1 organ dry weight are 3422 for A. mentula , 2070 for P. mammillata , 4892 for S. plicata and 3084 for M. sabatieri . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Filter-feeding ethology of benthic invertebrates (Ascidians). III. Recording of water current in situ — Rate and rhythm of pumping

Fiala-Médioni, A.
Marine Biology , Volume 45 (2) – Jun 1, 1978
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References (14)

Publisher
Springer Journals
Copyright
Copyright © 1978 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
DOI
10.1007/BF00390554
Publisher site
See Article on Publisher Site

Abstract

227 45 45 2 2 A. Fiala-Médioni Laboratoire Arago Université Paris VI Banyuls-sur-Mer France Abstract Water current in 4 species of ascidians ( Ascidia mentula Müller, 1776; Phallusia mammillata Cuvier, 1815; Styela plicata (Lesueur, 1823) and Microcosmus sabatieri Roule, 1885) has been recorded for the first time in situ with hot film probes. The mathematical treatment of probe calibration has allowed the evaluation of the characteristics of currents (minimal, maximal and average velocities) and the calculation of pumping rates. The method utilized yields qualitative and quantitative results: Pumping is continuous, and no particular rhythm shows up in the curves obtained. The velocity of the current does not change in the course of a recording, but it can vary from one experiment to another in the same individual; these variations are related to the variability of the diameter of the cloacal siphon rather than to a change in the rhythm of the ciliary activity. The average velocities are 3.42 cm sec -1 for A. mentula , 3.92 for P. mammillata , 3.30 for S. plicata and 3.79 for M. sabatieri . The pumping rates are fairly constant for the same individual. The means, expressed as ml x h -1 x g -1 organ dry weight are 3422 for A. mentula , 2070 for P. mammillata , 4892 for S. plicata and 3084 for M. sabatieri .

Journal

Marine Biology – Springer Journals

Published: Jun 1, 1978

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