Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-02T22:53:05.666Z Has data issue: false hasContentIssue false

Clearance rate responses of Mediterranean mussels, Mytilus galloprovincialis, to variations in the flow, water temperature, food quality and quantity

Published online by Cambridge University Press:  15 July 1999

Lionel Denis
Affiliation:
Centre d'océanologie de Marseille, université de la Méditerranée, CNRS UMR 6535 LOB, station marine d'Endoume, rue de la Batterie des Lions, 13007 Marseille, France
Elizabeth Alliot
Affiliation:
Centre d'océanologie de Marseille, université de la Méditerranée, CNRS UMR 6540 Dimar, station marine d'Endoume, rue de la Batterie des Lions, 13007 Marseille, France
Daniel Grzebyk
Affiliation:
CREMA L'Houmeau, CNRS Ifremer, B.P. 5, 17137 L'Houmeau, France
Get access

Abstract

The impact of Mediterranean mussels (Mytilus galloprovincialis Lamarck) on particle removal from the water column under different flow velocities was measured in the laboratory within a recirculating flume. At 20 °C, the filtration rates increased with current velocity up to 20−25 cm·s−1. Filtration rates remained the same at 26 °C. At high phytoplankton concentration (Cryptophyceae: 8 500−11 000 Cryptomonas sp. cells·mL−1), filtration rates were low (0.2−0.4 L·h−1 per standard individual of 1 g dry weight), whereas higher filtration rates (0.5−2.5 L·h−1 per standard individual) were observed with lower concentrations of the algae Prorocentrum minimum (Dinophyceae : 1 300−5 800 cells·mL−1). The filtration rates of M. galloprovincialis were affected by high phytoplankton loads, and exhibited a maximum related to current velocity. Our results suggest that mussels, feeding over a wide range of seston concentrations and flow velocities, show an adaptive behaviour in an area where environmental conditions are known to vary drastically.

Type
Research Article
Copyright
© Elsevier, IRD, Inra, Ifremer, Cemagref, CNRS, 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)