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Lacoste E., Le Moullac G., Levy P., Gueguen Y., Gaertner-Mazouni Nabila. (2014). Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera. Aquaculture, 434, 18-26. ISSN 0044-8486

Lien direct chez l'éditeur doi:10.1016/j.aquaculture.2014.07.012

Titre
Biofouling development and its effect on growth and reproduction of the farmed pearl oyster Pinctada margaritifera
Année de publication2014
Type de documentArticle référencé dans le Web of Science WOS:000345058700004
AuteursLacoste E., Le Moullac G., Levy P., Gueguen Y., Gaertner-Mazouni Nabila.
SourceAquaculture, 2014, 434, p. 18-26. ISSN 0044-8486
RésuméIn bivalve aquaculture, dominant fouling organisms are filter feeders which can compete for food with reared bivalves, sometimes causing mortality or reducing their growth rate. This study investigated the effect of biofouling on the farmed pearl oyster Pinctada margantifera in two lagoons of French Polynesia. Survival, growth and reproduction of 2 year-old pearl oysters were monitored with regular sampling schedules, from the initial stage of colonization up to 20 months of biofouling accumulation. Control groups of pearl oysters were kept free of biofouling as is the current practice in pearl farms. After more than a year of monitoring, no significant difference was recorded in shell growth rate between pearl oysters reared with epibionts and the control group of pearl oysters, at both sites. Mean annual shell growth rate (height) was 30.5 +/- 9.2 mm in Tahiti and 24.8 +/- 7.7 mm in Mangareva. Neither the survival nor the reproduction indices were negatively affected by biofouling. In Mangareva, where biofouling development was quantified during 1 year, the rate of colonization appeared to be high during the first 3 months before slowing down. These results raise questions about the necessity of removing biofouling at this stage of pearl oyster production (i.e. before grafting).
Plan de classementRessources halieutiques [040]
Descr. géo.POLYNESIE FRANCAISE
LocalisationFonds IRD
Identifiant IRDPAR00012466
Lien permanenthttp://www.documentation.ird.fr/hor/PAR00012466

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