Influence of preoperative food and temperature conditions on pearl biogenesis in Pinctada margaritifera
Autor: | Denis Saulnier, Kevin Magré, Nabila Gaertner-Mazouni, Julie Fievet, Oïhana Latchere, Gilles Le Moullac |
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Přispěvatelé: | Ecosystèmes Insulaires Océaniens (UMR 241) (EIO), Université de la Polynésie Française (UPF)-Institut Louis Malardé [Papeete] (ILM), Institut de Recherche pour le Développement (IRD)-Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
Rok vydání: | 2017 |
Předmět: |
Biomineralization
0301 basic medicine Oyster Environment Aquatic Science Pinctada margaritifera 03 medical and health sciences Cultured pearl Animal science Growth-rates Bivalve mollusk biology.animal Food level Shell Trophic level biology Grafter skill Pearl quality Ecology Pearl oyster biology.organism_classification eye diseases [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology 030104 developmental biology Water temperature [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies Gene expression Environmental Controls Matrix protein |
Zdroj: | Aquaculture Aquaculture, Elsevier, 2017, 479, pp.176-187. ⟨10.1016/j.aquaculture.2017.05.046⟩ Aquaculture (0044-8486) (Elsevier Science Bv), 2017-10, Vol. 479, P. 176-187 |
ISSN: | 0044-8486 |
Popis: | International audience; Trophic conditions and water temperature strongly influence bivalve physiological processes and metabolism. In black-lip pearl oyster Pinctada margaritifera, these parameters have been shown to affect shell biomineralization. The present study investigated the effect of preoperative food level (i.e., microalgal concentration) and temperature on pearl biomineralization. Donor and recipient oysters were conditioned at different levels of food and temperature during the preoperative phase to evaluate the influence of these factors on 1) pearl retention rate (grafting success), 2) expression of genes involved in biomineralization in the mantle and pearl sac and 3) pearl quality traits. Our study confirmed the influence of both microalgal concentration and temperature on shell growth. Food level of donor oysters was decisive for pearl biomineralization, with donors that had been fed at a high microalgal concentration producing pearl sacs with significantly higher biomineralization capabilities and faster nacre establishment during early stages of pearl formation. However, food level showed no effects on quality traits of the pearls harvested 12 months postgrafting, while preoperative temperature only influenced the relative expression of two genes in pearl sacs at 12 months postgrafting. No significant effects of the preoperative conditioning of recipient oysters were detected in either experiment considering gene expression measurements and pearl quality traits. However, mortality was significantly lower in grafted recipient oysters fed at an intermediate trophic level. Finally, pearl weight was shown to be positively correlated with recipient oyster growth. |
Databáze: | OpenAIRE |
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