Relationship between valve activity, microalgae concentration in the water and toxin accumulation in the digestive gland of the Pacific oyster Crassostrea gigas exposed to Alexandrium minutum

Type Article
Date 2011-06
Language English
Author(s) Haberkorn Hansy1, Tran Damien2, Massabuau Jean-Charles2, Ciret Pierre2, Savar Veronique3, Soudant Philippe1
Affiliation(s) 1 : Univ Bretagne Occidentale, Lab Sci Environm Marin, Inst Univ Europeen Mer, F-29280 Plouzane, France
2 : Univ Bordeaux 1, CNRS, UMR EPOC 5805, F-33120 Arcachon, France
3 : IFREMER Ctr Nantes, Lab Phycotoxines, F-44311 Nantes, France
Source Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2011-06 , Vol. 62 , N. 6 , P. 1191-1197
DOI 10.1016/j.marpolbul.2011.03.034
WOS© Times Cited 33
Keyword(s) Harmful algae, Oysters, Behavioral responses, Algae concentration, Toxin accumulation
Abstract The complexity of the relationships between Alexandrium minutum (Am.) concentration in the water ([A.m.](w)), Paralytic Shellfish Poisoning contamination in the digestive gland ([PSP](dg)) and valve behavior was explored in oysters Crassostrea gigas. Two experiments were conducted, during which oysters' valve behaviour were analyzed. Oysters, first acclimated for 10-days with the non harmful microalgae Heterocapsa triquetra (H.t.), were exposed to four microalgae mixtures at constant total concentrations of 10 x 10(3) cells ml(-1) (experiment-1) and 5 x 10(3) cells ml(-1) (experiment-2): 100% Am.; 50% A.m.-50% H.t.; 25% A.m.-75% H.t.; 100% H.t. At the end of experiment-2, [PSP](dg) were measured. At 10 x 103 cells ml(-1), the microalgal ingestion decreased (p < 0.05) with increasing [A.m.](w) but not at 5 x 10(3) cells ml(-1) (p > 0.05). The frequency of microclosures specifically increased with [A.m.](w) (p < 0.05) and the opening duration with [PSP](dg) (p < 0.0001). Oysters exhibiting the maximum increase in opening duration also exhibited the highest [PSP](dg). The results are discussed in terms of oyster physiology and origin of the behavioral response. (C) 2011 Elsevier Ltd. All rights reserved.
Full Text
File Pages Size Access
7 358 KB Access on demand
Author's final draft 23 235 KB Open access
Top of the page

How to cite 

Haberkorn Hansy, Tran Damien, Massabuau Jean-Charles, Ciret Pierre, Savar Veronique, Soudant Philippe (2011). Relationship between valve activity, microalgae concentration in the water and toxin accumulation in the digestive gland of the Pacific oyster Crassostrea gigas exposed to Alexandrium minutum. Marine Pollution Bulletin, 62(6), 1191-1197. Publisher's official version : https://doi.org/10.1016/j.marpolbul.2011.03.034 , Open Access version : https://archimer.ifremer.fr/doc/00041/15195/