Journal of Fish Biology 35, 813-818. data .2. Fine-scale population differentiation as observed in the present study has implications for the resolution with which harvest and habitat management of salmon should be conducted. Table S1: Sample size and coordinates (river mouth) for each of the 59 rivers sampled. Six different haplotypes were detected by restriction enzyme analyses of the NADH dehydrogenase 1 segment, employing four endonucleases. Ethologie du saumon. Molecular Ecology Resources 8, 103-106. stocked spawning sea trout gone? Figure 3: Temporal differentiation in each population. l’oxygénation est importante (Mills 1971; Fleming 1998). N is the number of alleles, AR is allelic richness (based on samples of 11 individuals), HE is the unbiased expected heterozygosity, HO is the observed heterozygosity, FIS is the inbreeding coefficient (significance is conditions were as follows: an initial denaturation for 5min at 94°C, then 42–45 cycles for 30s at 94°C, 30s at annealing temperature, 30 s at 72°C and a final synthesis for 30min at 72°C. Molecular Ecology 16, 4504-4522. microsatellites.

L'éthologie du saumon est dépendante de la phase de son cycle de développement.Les smolts vont dévaler en avril et mai, puis resteront un temps variable en mer, ce qui conditionnera d'ailleurs la taille et le moment de la remontée des adultes.La croissance, grâce à la profusion de nourriture en mer est très rapide. performed at the Toulouse Genopole (France) and elemental L’objectif de ce chapitre est d’identifier l’origine de saumons recolonisant la Seine.

Evolution récente de la structure génétique des populations : effets des Discussion ............................................................................................................................ Chapitre V. Estimation des effets des repeuplements par simulation Discussion .......................................................................................................................... Chapitre VI. Hurrell RH, Price DJ (1991) Natural hybrids between atlantic salmon, salmo-salar l, andlimitations set by scale architecture. Their progeny have pure hatchery pedigrees but have otoliths typical of river-born juveniles, meaning that they can be mistaken for hatchery-raised juveniles if only genetic data are considered. Les flèches indiquent les rivières repeuplées et les couleurs violettes, rouges, et vertes correspondent respectivement à des repeuplements utilisant des juvéniles issus de géniteurs « étrangers », français non-natif de la rivière, et français natif de la rivière.

Behav.

elements are not strongly involved in physiological processes, which rivers; such differences may be explained by variations variations in water temperature during growth (Mitsuguchi et al., 1996).

Les populations de la Baie du Mont Saint Michel sont idéales pour cette étusont étudiées depuis plus d’une quinzaine d’années par l’INRA et parce que les repeuplements scénarios implémentant plusieurs valeurs de survie et de dispersion. The effective migration of females (Nm )F among rivers was estimated to be approximately one per generation.

All fish were genotyped with 6 microsatellite markers and Pan I (Dataset 1). We genotyped 1739 individuals from 34 rivers at 17 microsatellite microchemistry, microsatellite markers, otolith, simulations, stocking. Canadian Journal of Fisheries and Aquatic Sciences 62, 2425-2430.

yields a robust phylogeny. Molecular Ecology 18, 2549-2562. local adaptation in anadromous brown trout (salmo trutta) populations. Figure 4. Table 3: Spatial variability of 12 elements measured in juvenile Atlantic salmons collected in four Normandy Rivers and at the Favot Hatchery. The effect of river length was mainly owing to one highly differentiated population that has the farthest spawning grounds off the river mouth (up to 900 km) and the largest fish, suggesting local adaptation to river length. 2008) chromosomiques alors que ceux de l’Atlantique beaucoup plus récemment, il y a 22,000 ans (Verspoor et al.

62, 2189-2198. carassius-auratus. Evolution 55, 1016-1028. mitochondrial DNA diversity but fails to halt the decline of endangered Atlantic salmon populations.