Growth anomalies in Pecten maximus from coastal waters (Bay of Brest, France): relationship with diatom blooms

Type Article
Date 2000-08
Language English
Author(s) Lorrain Anne, Paulet Yves-Marie, Chauvaud Laurent, Savoye Nicolas, Nezan Elisabeth, Guerin Laurent
Affiliation(s) Technopole Brest Iroise, IUEM, UBO, CNRS,UMR 6539, F-29280 Plouzane, France.
IFREMER, F-29900 Concarneau, France.
Technopole Brest Iroise, IUEM, UBO, CNRS,UMR 6554, F-29280 Plouzane, France.
Source Journal of the Marine Biological Association of the United Kingdom (0025-3154) (Cambridge University Press), 2000-08 , Vol. 80 , N. 4 , P. 667-673
DOI 10.1017/S0025315400002526
WOS© Times Cited 52
Keyword(s) Biscay bay, Limiting factors, Primary production, Phytoplankton cnoncentration, Pecten maximus, Growth rate
Abstract The aim of this study was to characterize the daily shell growth of Pecten maximus from early 1998 to late spring 1999 in the Bay of Brest with a careful qualitative and quantitative description of the pelagic primary production. Our results, in accordance with previous studies, demonstrate that there are episodic declines in the growth rate. Concurrent events of low growth rate and large bottom-concentrations of algae following diatom blooms (Cerataulina pelagica or Rhizosolenia delicatula), suggests that this high concentration of phytoplankton on the bottom layer may affect food intake or respiratory activity of the scallops by gill clogging or oxygen depletion. In this study, silicic acid or phosphorus are inferred to be limiting factors responsible for the collapse of the spring bloom. Further, we suggest that, in an N-enriched ecosystem, Si or P-limitation and the changing sinking velocities of phytoplankton, could affect the biology of benthic suspension-feeders.
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Lorrain Anne, Paulet Yves-Marie, Chauvaud Laurent, Savoye Nicolas, Nezan Elisabeth, Guerin Laurent (2000). Growth anomalies in Pecten maximus from coastal waters (Bay of Brest, France): relationship with diatom blooms. Journal of the Marine Biological Association of the United Kingdom, 80(4), 667-673. Publisher's official version : https://doi.org/10.1017/S0025315400002526 , Open Access version : https://archimer.ifremer.fr/doc/00000/612/