FN Archimer Export Format
PT SLIDE
TI Population genetics of the European flat oyster (Ostrea edulis) : from larvae to populations
BT 
AF BOUDRY, Pierre
   LAUNEY, Sophie
   DIAZ-ALMELA, E.
   NACIRI-GRAVEN, Yamama
   LEDU, Christophe
   MIRA, Sara
   TARIS, Nicolas
   BONHOMME, Francois
   LAPEGUE, Sylvie
AS 1:;2:;3:;4:;5:;6:;7:;8:;9:;
FF 1:PDG-DOP-DCB-PFOM-PI;2:PDG-DRV-RA-GAP;3:;4:;5:PDG-DOP-DCN-AGSAE-LGP;6:;7:PDG-DOP-DCN-AGSAE-LGP;8:;9:PDG-DOP-DCN-AGSAE-LGP;
SI BREST
   LA TREMBLADE RONCE
   LA TREMBLADE
SE PDG-DOP-DCB-PFOM-PI
   PDG-DRV-RA-GAP
   PDG-DOP-DCN-AGSAE-LGP
UR https://archimer.ifremer.fr/doc/2002/acte-3493.pdf
LA English
DT Slideshow
DE ;Larvae;Reproduction;Genetic;Ostrea edulis;European flat oyster;Population genetics
AB Nowadays, PCR-based DNA markers allow the study of diversity and differentiation of marine organisms at different stages of their life cycle. Our study of European flat oyster (Ostrea edulis) populations has aimed to describe their spatial and temporal dynamics. First, we analyzed adults sampled over the natural range of the species.  An Atlantic/Mediterranean differentiation pattern was observed. Results were congruent between allozymes, microsatellites and mitochondrial DNA and  support an isolation by distance model. High variability was observed in the breadth of diversity between populations using a mitochondrial marker, this highlights the small effective population sizes in some locations. A 10-fold quantitative difference was observed in Fst  between the genomes, which may be due to an unbalanced sex ratio and/or differential reproductive success. Secondly, we investigated the dynamics of reproduction at a finer scale. Several experiments were performed to study (1) the variance of allele frequencies during a natural settlement period, (2) the paternal contribution to fertilization by analyzing larvae sampled at the brooding stage within individual females, (3) the individual reproductive success within an experimental population. The significance of our results will be discussed in terms of management of the genetic diversity and the potential impact of aquaculture and hatchery propagation.   
PY 2002
PD OCT
ID 3493
ER

EF