Marine epibiosis |
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Authors: | Martin Wahl Francoise Lafargue |
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Affiliation: | (1) Zoologisches Institut der Universität Kiel, D-2300 Kiel, Federal Republic of Germany;(2) Lab. Arago, F-66650 Banyuis/mer, France |
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Abstract: | Summary Polysyncraton lacazei is a colonial tunicate (family didemnidae) living in the NW-mediterranean rocky sublitoral. A thorough scanning of numerous colonies revealed that in spite of an apparently heavy local fouling pressure only one fouling species — a kamptozoan — is encountered with some regularity on Polysyncraton. We try to define the epibiotic situation of sessile marine organisms as composed of four epibiotic parameters: longevity or exposure time (A), epibiont load (E), colonizer pool (CP) and fouling-period (FP). Subsequently, these factors are combined to propose an Antifouling Potential index: AFP=(1–E/CP)×A/(FP+A). This index is intended to permit evaluating the relative antifouling defense potency to be expected in a given organism in a given epibiotic situation and to compare different cases of epibiosis and fouling. |
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Keywords: | Epibiosis Polysyncraton lacazei Ascidian Epibiotic parameters Antifouling potential index |
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