Bruno Guinand
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View article: Genome divergence between European anchovy ecotypes fuelled by structural variants originating from trans-equatorial admixture
Genome divergence between European anchovy ecotypes fuelled by structural variants originating from trans-equatorial admixture Open
The formation of ecotypes is driven by evolutionary mechanisms that reduce gene flow through complex interactions among ecological, historical and genomic factors. In the European anchovy ( Engraulis encrasicolus ), marine and coastal ecot…
View article: Genomic differentiation of the black-chinned tilapia (<i>Sarotherodon melanotheron</i>) along a fresh-to-hypersaline water gradient
Genomic differentiation of the black-chinned tilapia (<i>Sarotherodon melanotheron</i>) along a fresh-to-hypersaline water gradient Open
Summary The black-chinned tilapia ( Sarotherodon melanotheron ) is an African fish species, found in freshwater, brackish, marine and especially hypersaline (up to 110 ‰) habitats in Senegambia. Using 16,786 filtered single nucleotide poly…
View article: Genome divergence between European anchovy ecotypes fuelled by structural variants originating from cross-hemispheric admixture
Genome divergence between European anchovy ecotypes fuelled by structural variants originating from cross-hemispheric admixture Open
The formation of ecotypes is shaped by mechanisms that reduce gene flow through complex interactions between ecological, historical, and genomic factors. In the European anchovy ( Engraulis encrasicolus ), marine and coastal ecotypes have …
View article: Divergence and gene flow history at two large chromosomal inversions underlying ecotype differentiation in the long‐snouted seahorse
Divergence and gene flow history at two large chromosomal inversions underlying ecotype differentiation in the long‐snouted seahorse Open
Chromosomal inversions can play an important role in divergence and reproductive isolation by building and maintaining distinct allelic combinations between evolutionary lineages. Alternatively, they can take the form of balanced polymorph…
View article: “Divergence and gene flow history at two large chromosomal inversions involved in long-snouted seahorse ecotype formation”
“Divergence and gene flow history at two large chromosomal inversions involved in long-snouted seahorse ecotype formation” Open
Chromosomal inversions can play an important role in divergence and reproductive isolation by building and maintaining distinct allelic combinations between evolutionary lineages. Alternatively, they can take the form of balanced polymorph…
View article: Epigenetics of Stress in Farmed Fish
Epigenetics of Stress in Farmed Fish Open
International audience
View article: Redundancy analysis, genome‐wide association studies and the pigmentation of brown trout (<i>Salmo trutta</i> L.)
Redundancy analysis, genome‐wide association studies and the pigmentation of brown trout (<i>Salmo trutta</i> L.) Open
The association of molecular variants with phenotypic variation is a main issue in biology, often tackled with genome‐wide association studies (GWAS). GWAS are challenging, with increasing, but still limited, use in evolutionary biology. W…
View article: Genetic Basis for Resistance Against Viral Nervous Necrosis: GWAS and Potential of Genomic Prediction Explored in Farmed European Sea Bass (Dicentrarchus labrax)
Genetic Basis for Resistance Against Viral Nervous Necrosis: GWAS and Potential of Genomic Prediction Explored in Farmed European Sea Bass (Dicentrarchus labrax) Open
Viral nervous necrosis (VNN) is an infectious disease caused by the red-spotted grouper nervous necrosis virus (RGNNV) in European sea bass and is considered a serious concern for the aquaculture industry with fry and juveniles being highl…
View article: Brown trout phylogenetics: A persistent mirage towards (too) many species
Brown trout phylogenetics: A persistent mirage towards (too) many species Open
International audience
View article: Epigenomic response of red blood cells to a stress challenge in the European sea bass (Dicentrarchus labrax, L.)
Epigenomic response of red blood cells to a stress challenge in the European sea bass (Dicentrarchus labrax, L.) Open
Background: In fish, minimally invasive blood sampling is widely used to monitor physiological stress with blood plasma biomarkers. As fish blood cells are nucleated, they might be a source a potential new markers derived from ‘omics techn…
View article: Additional file 5 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.)
Additional file 5 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.) Open
Additional file 5.
View article: Additional file 3 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.)
Additional file 3 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.) Open
Additional file 3.
View article: Additional file 1 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.)
Additional file 1 of Family-effects in the epigenomic response of red blood cells to a challenge test in the European sea bass (Dicentrarchus labrax, L.) Open
Additional file 1.
View article: Genome-wide epigenomic stress response in the European sea bass (Dicentrarchus labrax, L.)
Genome-wide epigenomic stress response in the European sea bass (Dicentrarchus labrax, L.) Open
Background: While the stress response inspired genome-wide epigenetic studies in vertebrate models, it remains mostly ignored in fish. We modified the epiGBS (epiGenotyping By sequencing) technique to explore changes in genome-wide cytosin…
View article: Genome-Wide Epigenomic Stress Response in the European Sea Bass (Dicentrarchus Labrax, L.)
Genome-Wide Epigenomic Stress Response in the European Sea Bass (Dicentrarchus Labrax, L.) Open
Background: While the stress response inspired genome-wide epigenetic studies in vertebrate models, it remains mostly ignored in fish. We modified the epiGBS (epiGenotyping By sequencing) technique to explore changes in genome-wide cytosin…
View article: Spotting genome-wide pigmentation variation in a brown trout admixture context
Spotting genome-wide pigmentation variation in a brown trout admixture context Open
Variation in body pigmentation attracted fish biologists for a while, but high-throughput genomic studies investigating its molecular basis remain limited to few species and associated conservation issues ignored. Using 75,684 SNPs, we exp…
View article: Genome scale epigenomic analysis of response to acute stress in the European sea bass (Dicentrarchus labrax, L.)
Genome scale epigenomic analysis of response to acute stress in the European sea bass (Dicentrarchus labrax, L.) Open
Understanding the molecular basis of stress is of long standing interest in biology and fish science. We tackled this question by modifying the epiGBS (epiGenotyping By sequencing) technique to screen for cytosine methylation and explore t…
View article: Genome-wide epigenomic stress response in the European sea bass (<i>Dicentrarchus labrax</i>, L.)
Genome-wide epigenomic stress response in the European sea bass (<i>Dicentrarchus labrax</i>, L.) Open
Background While the stress response inspired genome-wide epigenetic studies in vertebrate models, it remains mostly ignored in fish. We modified the epiGBS (epiGenotyping By sequencing) technique to explore changes in genome-wide cytosine…
View article: Within-Generation Polygenic Selection Shapes Fitness-Related Traits across Environments in Juvenile Sea Bream
Within-Generation Polygenic Selection Shapes Fitness-Related Traits across Environments in Juvenile Sea Bream Open
Understanding the genetic underpinnings of fitness trade-offs across spatially variable environments remains a major challenge in evolutionary biology. In Mediterranean gilthead sea bream, first-year juveniles use various marine and bracki…
View article: Development of a large SNPs resource and a low-density SNP array for brown trout (Salmo trutta) population genetics
Development of a large SNPs resource and a low-density SNP array for brown trout (Salmo trutta) population genetics Open
The novel resources provided here opens new perspectives for universality and genome-wide studies in brown trout populations.
View article: <i>Salmo macrostigma</i>(Teleostei, Salmonidae): Nothing more than a brown trout (<scp><i>S. trutta</i></scp>) lineage?
<i>Salmo macrostigma</i>(Teleostei, Salmonidae): Nothing more than a brown trout (<span><i>S. trutta</i></span>) lineage? Open
We examined specimens of the macrostigma trout Salmo macrostigma , which refers to big black spots on the flanks, to assess whether it is an example of taxonomic inflation within the brown trout Salmo trutta complex. Using new specimens, p…
View article: Genomic consequences of a recent three-way admixture in supplemented wild brown trout populations revealed by ancestry tracts
Genomic consequences of a recent three-way admixture in supplemented wild brown trout populations revealed by ancestry tracts Open
Understanding the evolutionary consequences of human-mediated introductions of domestic strains into the wild and their subsequent admixture with natural populations is of major concern in conservation biology. In the brown trout Salmo tru…
View article: Tempo and rates of diversification in the South American cichlid genus Apistogramma (Teleostei: Perciformes: Cichlidae)
Tempo and rates of diversification in the South American cichlid genus Apistogramma (Teleostei: Perciformes: Cichlidae) Open
Evaluating biodiversity and understanding the processes involved in diversification are noticeable conservation issues in fishes subject to large, sometimes illegal, ornamental trade purposes. Here, the diversity and evolutionary history o…
View article: Metapopulation patterns of additive and nonadditive genetic variance in the sea bass (<i>Dicentrarchus labrax</i>)
Metapopulation patterns of additive and nonadditive genetic variance in the sea bass (<i>Dicentrarchus labrax</i>) Open
Describing and explaining the geographic within‐species variation in phenotypes (“phenogeography”) in the sea over a species distribution range is central to our understanding of a variety of eco‐evolutionary topics. However, phenogeograph…
View article: A Dense Brown Trout ( <i>Salmo trutta</i> ) Linkage Map Reveals Recent Chromosomal Rearrangements in the <i>Salmo</i> Genus and the Impact of Selection on Linked Neutral Diversity
A Dense Brown Trout ( <i>Salmo trutta</i> ) Linkage Map Reveals Recent Chromosomal Rearrangements in the <i>Salmo</i> Genus and the Impact of Selection on Linked Neutral Diversity Open
High-density linkage maps are valuable tools for conservation and eco-evolutionary issues. In salmonids, a complex rediploidization process consecutive to an ancient whole genome duplication event makes linkage maps of prime importance for…
View article: Candidate gene variation in gilthead sea bream reveals complex spatiotemporal selection patterns between marine and lagoon habitats
Candidate gene variation in gilthead sea bream reveals complex spatiotemporal selection patterns between marine and lagoon habitats Open
In marine fishes, the extent to which spatial patterns induced by selection remain stable across generations remains largely unknown. In the gilthead sea bream Sparus aurata, polymorphisms in the growth hormone (GH) and prolactin (Prl) gen…