| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Influence of Temperature and Pearl Rotation on Biomineralization in the Pearl Oyster Pinctada margaritifera
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| Autores: |
Le Moullac, Gilles
Schuck, Lucie
Chabrier, Sebastien
Belliard, Corinne
Lyonnard, Pierre
Broustal, Floriane
Soyez, Claude
Saulnier, Denis
Brahmi, Chloe
Ky, Chin-long
Beliaeff, Benoit
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| Data: |
2018-09
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| Ano: |
2018
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| Palavras-chave: |
Magnetometer
Rotation speed
Nacre growth
Nacre thickness
Gene expression
Pmarg-Pif177
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| Resumo: |
The objective of this study was to observe the impact of temperature on pearl formation using an integrative approach describing the rotation of the pearls, the rate of nacre deposition, the thickness of the aragonite tablets and the biomineralizing potential of the pearl sac tissue though the expression level of some key genes. Fifty pearl oysters were grafted with magnetized nuclei to allow the rotation of the pearls to be described. Four months later, 32 of these pearl oysters were exposed to four temperatures (22, 26, 30 and 34°C) for 2 weeks. Results showed that the rotation speed differed according to the movement direction: pearls with axial movement (AM) had a significantly higher rotation speed than those with random movement (RM). Pearl growth rate was influenced by temperature, with a maximum between 26 and 30°C but almost no growth at 34°C. Lastly, among the nine genes implicated in the biomineralization process, the Pmarg-Pif177 expression was significantly modified by temperature. These results showed that the rotation speed of the pearls was not linked to pearl growth or to the expression profiles of biomineralizing genes targeted in this study. On the basis of our results, we consider that pearl rotation is a more complex process than formerly thought. Mechanisms involved could include a strong environmental forcing in immediate proximity to the pearl. Another implication of our findings is that, in the context of ocean warming, pearl growth and quality can be expected to decrease in pearl oysters exposed to temperatures above 30°C.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00450/56196/57753.pdf
https://archimer.ifremer.fr/doc/00450/56196/57754.pdf
DOI:10.1242/jeb.186858
https://archimer.ifremer.fr/doc/00450/56196/
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| Editor: |
Company Biologists Ltd
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Experimental Biology (0022-0949) (Company Biologists Ltd), 2018-09 , Vol. 221 , N. 18 , P. jeb186858 (7p.)
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| Direitos: |
2018. Published by The Company of Biologists Ltd
info:eu-repo/semantics/openAccess
restricted use
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