Mesure de la retention de Skeletonema costatum par Ruditapes philippinarum (Mollusque, Bivalve) en fonction de la longueur des colonies algales: Principes methodologiques

Autre(s) titre(s) Determination of retention efficiency of Skeletonema costatum by Ruditapes philippnarum (Mollusca, Bivalvia) related to the size of the diatom algae: Methodological aspects.
Type Communication avec actes
Date 1991-11
Langue(s) Français
Auteur(s) Sauriau Pierre-Guy, Baud Jean-Pierre
Conférence (8. Natl. Congr. of the French Malacological Society): Aspects Recents de la Biologie des Mollusques, Brest (France), 7-8 Nov 1990
Source Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991
Keyword(s) Bivalvia, Skeletonema costatum, Bacillariophyceae, Algae, Physiology, Biopolymorphism, Counters, Size, Size distribution, Feeding, Nutrition
Résumé en anglais Based on Coulter Counter data, a new method is proposed to study the influence of the polymorphous variability in size as well as in shape of the diatom species Skeletonema costatum on the physiological performances of the Manila clam Ruditapes philippinarum . Three conditions are required in order to convert volumetric data determined with the Coulter Counter into metric data, i.e. (1) stability of the pervalvar diameter of the diatom chains, (2) statistical independence between length and pervalvar diameter of the diatom chains, and (3) negligible level of coincident passages through the aperture orifice. Under these three conditions, the mean length (l) of a S. costatum chain can be related to the mean pervalvar diameter (d) of diatom chains and to the spherical diameter (D) of each channel of the Coulter Counter. The mean length (l) of a S. costatum chain is then estimated by l = 4 D super(3)/6 d super(2). Application of this analytic method is discussed.
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Sauriau Pierre-Guy, Baud Jean-Pierre (1991). Mesure de la retention de Skeletonema costatum par Ruditapes philippinarum (Mollusque, Bivalve) en fonction de la longueur des colonies algales: Principes methodologiques. Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991. https://archimer.ifremer.fr/doc/00000/1670/