Spatio-temporal variation in the genetic composition of wild populations of pearl oyster (Pinctada margaritifera cumingii) in French Polynesia following 10 years of juvenile translocation

The genetic impact of the cultural practice of spat collection and translocation between genetically distinct stocks of black‐lipped pearl oyster, Pinctada margaritifera cumingii, was studied by comparing samples collected in the 1980s and 2000s from seven atolls in French Polynesia. An amova reveal...

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Bibliographic Details
Published in:Molecular ecology 2004-07, Vol.13 (7), p.2001-2007
Main Authors: Arnaud-Haond, S., Vonau, V., Bonhomme, F., Boudry, P., Blanc, F., Prou, J., Seaman, T., Goyard, E.
Format: Article
Language:English
Subjects:
Analysis of Variance
Animals
anonymous nuclear markers
Demography
Gene Frequency
genetic structure
Genetic Variation
Genetics, Population
Genotype
Geography
Linkage Disequilibrium
management
Marine
Ostreidae - genetics
Pacific Ocean
pearl oysters
Pinctada margaritifera cumingii
Polynesia
translocations
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Summary:The genetic impact of the cultural practice of spat collection and translocation between genetically distinct stocks of black‐lipped pearl oyster, Pinctada margaritifera cumingii, was studied by comparing samples collected in the 1980s and 2000s from seven atolls in French Polynesia. An amova revealed homogenization of the previously genetically distinct wild stocks of Tuamotu‐Gambier and Society archipelagos (the indices of genetic differentiation among archipelagos and among populations within archipelagos, respectively, ΦCT and ΦST, decreased from 0.032* and 0.025*, respectively, to 0.006NS and 0.007NS). These results suggest high success of spontaneous reproduction in farms, probably due to the very high density of cultivated pearl oysters, and underline the importance of genetic monitoring of future hatchery produced stocks.
ISSN:0962-1083
1365-294X
DOI:10.1111/j.1365-294X.2004.02188.x