FN Archimer Export Format
PT J
TI Stock enhancement or sea ranching? Insights from monitoring the genetic diversity, relatedness and effective population size in a seeded great scallop population (Pecten maximus)
BT 
AF MORVEZEN, R.
   BOUDRY, Pierre
   LAROCHE, J.
   CHARRIER, G.
AS 1:1;2:2;3:1;4:1;
FF 1:;2:PDG-RBE-PFOM;3:;4:;
C1 Inst Univ Europeen Mer, UMR LEMAR UBO CNRS IRD Ifremer 6539, Lab Sci Environm Marin, Technopole Brest Iroise,Rue Dumont Urville, F-29280 Plouzane, France.
   Ctr Bretagne, UMR LEMAR UBO CNRS IRD Ifremer 6539, IFREMER, Lab Sci Environm Marin, Plouzane, France.
C2 UBO, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-RBE-PFOM
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.961
TC 15
UR https://archimer.ifremer.fr/doc/00344/45530/45089.pdf
   https://archimer.ifremer.fr/doc/00344/45530/45090.pdf
   https://archimer.ifremer.fr/doc/00344/45530/45105.pdf
LA English
DT Article
BO Albert Lucas
AB The mass release of hatchery-propagated stocks raises numerous questions concerning its efficiency in terms of local recruitment and effect on the genetic diversity of wild populations. A seeding program, consisting of mass release of hatchery-produced juveniles in the local naturally occurring population of great scallops (Pecten maximus L.), was initiated in the early 1980s in the Bay of Brest (France). The present study aims at evaluating whether this seeding program leads to actual population enhancement, with detectable effects on genetic diversity and effective population size, or consists of sea ranching with limited genetic consequences on the wild stock. To address this question, microsatellite-based genetic monitoring of three hatchery-born and naturally recruited populations was conducted over a 5-year period. Results showed a limited reduction in allelic richness but a strong alteration of allelic frequencies in hatchery populations, while genetic diversity appeared very stable over time in the wild populations. A temporal increase in relatedness was observed in both cultured stock and wild populations. Effective population size (Ne) estimates were low and variable in the wild population. Moreover, the application of the Ryman-Laikre model suggested a high contribution of hatchery-born scallops to the reproductive output of the wild population. Overall, the data suggest that the main objective of the seeding program, which is stock enhancement, is fulfilled. Moreover, gene flow from surrounding populations and/or the reproductive input of undetected sub-populations within the bay may buffer the Ryman-Laikre effect and ensure the retention of the local genetic variability.
PY 2016
PD SEP
SO Heredity
SN 0018-067X
PU Nature Publishing Group
VL 117
IS 3
UT 000381312300003
BP 142
EP 148
DI 10.1038/hdy.2016.42
ID 45530
ER

EF