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Direct measurements of velocity profiles and fluxes at the cloacal siphon of the ascidian Ascidiella aspersa

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Abstract

Actual measurements of velocity profiles were obtained with a conical hot-film probe at the cloacal siphon of the ascidian Ascidiella aspersa (Müller, 1776). The parabolic profile law, which was used to calculate pumping rates from a single velocity value, led to an underestimation of about 30 to 40% in comparison to actual flux measurements at the siphon. This margin could be reduced by a more accurate determination of the siphon size.

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Authors and Affiliations

  1. Laboratoire d'Océanographie Physique du Muséum National d'Histoire Naturelle, 43 rue Cuvier, F-75005, Paris, France

    E. Charriaud

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  1. E. Charriaud
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Communicated by J. M. Pérès, Marseille

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Charriaud, E. Direct measurements of velocity profiles and fluxes at the cloacal siphon of the ascidian Ascidiella aspersa . Mar. Biol. 70, 35–40 (1982). https://doi.org/10.1007/BF00397294

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  • DOI: https://doi.org/10.1007/BF00397294

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