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| Moore, Jean-sebastien; Harris, Les N.; Le Luyer, Jeremy; Sutherland, Ben J. G.; Rougemont, Quentin; Tallman, Ross F.; Fisk, Aaron T.; Bernatchez, Louis. |
| Migration is a ubiquitous life history trait with profound evolutionary and ecological consequences. Recent developments in telemetry and genomics, when combined, can bring significant insights on the migratory ecology of non-model organisms in the wild. Here, we used this integrative approach to document dispersal, gene flow and potential for local adaptation in anadromous Arctic Char from six rivers in the Canadian Arctic. Acoustic telemetry data from 124 tracked individuals indicated asymmetric dispersal, with a large proportion of fish (72%) tagged in three different rivers migrating up the same short river in the fall. Population genomics data from 6,136 SNP markers revealed weak, albeit significant, population differentiation (average pairwise FST =... |
| Tipo: Text |
Palavras-chave: Arctic; Conservation; Fish migration; Fishery management; Genotyping by sequencing; Population genomics; RADseq. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52049/52719.pdf |
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| Reisser, Celine; Gendre, Romain Le; Chupeau, Cassandre; Lo-yat, Alain; Planes, Serge; Andréfouët, Serge. |
| In French Polynesia, the production and exportation of black pearls through the aquaculture of the black-lip pearl oyster Pinctada margaritifera provide the second largest economic income for the country after tourism. This industry entirely relies on the collection of natural spats from few highly recruiting lagoons. In recent years, pearl oyster producers have experienced variable success rates in spat collection, with significant spatial and temporal variability in spat supply, driving uncertainty in the future of pearl production. This study combines, for the first time in a farmed lagoon, genetic (SNPs), demographic (sex ratio, age), and biophysical data (larval dispersal modelling) to shed new light on population dynamics, connectivity, and spat... |
| Tipo: Text |
Palavras-chave: Pinctada margaritifera; Connectivity; Population genomics; Pearl farming; Larval dispersal modelling; MARS3D.. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00623/73503/72810.pdf |
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| Gagnaire, Pierre-alexandre; Broquet, Thomas; Aurelle, Didier; Viard, Frederique; Souissi, Ahmed; Bonhomme, Francois; Arnaud-haond, Sophie; Bierne, Nicolas. |
| Estimating the rate of exchange of individuals among populations is a central concern to evolutionary ecology and its applications to conservation and management. For instance, the efficiency of protected areas in sustaining locally endangered populations and ecosystems depends on reserve network connectivity. The population genetics theory offers a powerful framework for estimating dispersal distances and migration rates from molecular data. In the marine realm, however, decades of molecular studies have met limited success in inferring genetic connectivity, due to the frequent lack of spatial genetic structure in species exhibiting high fecundity and dispersal capabilities. This is especially true within biogeographic regions bounded by well-known... |
| Tipo: Text |
Palavras-chave: Connectivity; Gene flow; Marine conservation; Population genomics; Population structure. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00275/38592/37120.pdf |
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