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Rapid, broad-scale gene expression evolution in experimentally harvested fish populations [Molecular Ecology]

Keywords : gene expression, fisheries-induced evolution, transcriptome sequencing, size selection, adaptation, captive breeding

par Frédéric Magné - publié le

Gene expression changes potentially play an important role in adaptive evolution under human-induced selection pressures but this has been challenging to demonstrate in natural populations. Fishing exhibits strong selection pressure against large body size, thus potentially inducing evolutionary changes in life-history and other traits that may be slowly reversible once fishing ceases. However, there is a lack of convincing examples regarding the speed and magnitude of fisheries-induced evolution and thus the relevant underlying molecular-level effects remain elusive. We use wild-origin zebrafish (Danio rerio) as a model for harvest-induced evolution.(...)

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