L. Bernatchez

Epigenetic and genetic differentiation between Coregonus species pairs

The paper examines genetic and epigenetic differentiation between sympatric benthic-limnetic whitefish species pairs, finding evidence that DNA methylation contributes to mutagenesis and genetic divergence during speciation.

Allele surfing causes maladaptation in a Pacific salmon of conservation concern

This study shows that allele surfing during postglacial expansion in Coho salmon increases deleterious mutation load and reduces selection efficacy, influenced by population size, recombination rates, and chromosomal inheritance.

Natural hybridisation reduces vulnerability to climate change

The paper shows hybrid populations of rainbowfish are less vulnerable to climate change than pure endemics due to adaptive introgression.

Captive rearing effects on the methylome of Atlantic salmon after oceanic migration: sex-specificity and intergenerational stability

This study examines the epigenetic effects of captive rearing on Atlantic salmon, finding sex-specific methylation changes and limited intergenerational inheritance.

Searching for intra-locus sexual conflicts in the three-spined stickleback (Gasterosteus aculeatus) genome

The paper investigates intra-locus sexual conflicts in three-spined sticklebacks using whole genome sequencing and detects four genomic regions associated with balancing selection, suggesting most conflicts are transient but may locally reduce purifying selection.

Two different mental disc forms in the Tashan cave Garra: different species or ecotypes?

The paper examines two mental disc forms in Garra tashanensis from Tashan Cave, finding low genetic divergence suggesting ecological diversification rather than speciation.

Environmental selection, rather than neutral processes, best explain patterns of diversity in a tropical rainforest fish

The paper investigates factors driving biodiversity in a tropical rainforest fish, finding environmental selection, not neutral processes, explains genetic and morphological variation.

Thermal regime during parental sexual maturation, but not during offspring rearing, modulates DNA methylation in brook charr (Salvelinus fontinalis)

The study shows that parental thermal exposure during sexual maturation affects offspring DNA methylation, but offspring rearing temperature does not.

Genome assembly, structural variants, and genetic differentiation between Lake Whitefish young species pairs (Coregonus sp.) with long and short reads

The paper assembles genomes and identifies structural variants in two Lake Whitefish species pairs using long and short reads, finding that SVs cover more genome than SNPs and are linked to transposable elements.

Long distance migration is a major factor driving local adaptation at continental scale in Coho Salmon

This study identifies long-distance migration as a key driver of local adaptation in Coho Salmon across North America, revealing genetic associations with migration and altitude.

A supergene in seaweed flies modulates male traits and female perception

The paper investigates how the Cf-Inv(1) supergene in seaweed flies influences male chemical traits and female perception, supporting disassortative mating through linked genetic mechanisms.

DNA transposon expansion is associated with genome size increase in mudminnows

The paper investigates genome size expansion in mudminnows, finding that DNA transposon activity, not whole genome duplication, drives this expansion in both North American and European species.

Captive-breeding and catch-and-release's effects on the reproductive success of Atlantic salmon (Salmo salar L.)

This study evaluates the reproductive success of captive-bred and catch-and-release Atlantic salmon, finding reduced success for captive-bred fish and partial reproductive success for released fish.

Genome-wide DNA methylation predicts environmentally-driven life history variation in a marine fish

This study shows that DNA methylation patterns differ between two life history strategies in capelin, suggesting epigenetic changes, not genetic differences, drive these variations.

Locally-adaptive inversions modulate genetic variation at different geographic scales in a seaweed fly

This study examines how chromosomal inversions influence genetic variation across geographic scales in the seaweed fly, finding they differentiate populations more strongly than collinear regions.

Environment-driven reprogramming of gamete DNA methylation occurs during maturation and is transmitted intergenerationally in salmon

This study shows that environmental changes during maturation alter sperm DNA methylation in Atlantic Salmon, which is passed to offspring and linked to fitness differences.

Demographic history shaped geographical patterns of deleterious mutation load in a broadly distributed Pacific Salmon

The paper reconstructs the demographic history of Coho salmon to show how past population dynamics shaped regional differences in deleterious mutation load.

The rise and fall of the ancient northern pike master sex determining gene

The paper traces the evolution of sex determination in northern pike, revealing an ancient origin of the master sex-determining gene and recent transitions including Y-chromosome loss.

Contrasted gene decay in subterranean vertebrates: insights from cavefishes and fossorial mammals

This study compares gene decay in cavefishes and fossorial mammals, finding that eye gene decay is recent in cavefishes but ancient in mammals.

Transgenerational dispersal plasticity and its fitness consequences are under genetic control

This study investigates how genotype influences transgenerational plasticity of dispersal traits across 200 clonal generations in ciliates, showing stable inheritance and genotype-dependent fitness effects.

The role of genomic vs. epigenomic variation in shaping patterns of convergent transcriptomic variation across continents in a young species complex

The paper quantifies the relative contribution of genomic and epigenomic variation to convergent gene expression differences in four whitefish species pairs across continents.

Polygenic selection drives the evolution of convergent transcriptomic landscapes across continents within a Nearctic sister-species complex.

The paper investigates convergent transcriptomic landscapes in limnetic and benthic whitefish species pairs across continents, finding shared genomic bases for differential gene expression under polygenic selection.

The role of recombination on genome-wide patterns of local ancestry exemplified by supplemented Brook Charr populations

The paper examines how recombination affects local ancestry patterns in Brook Charr populations following hybridization, finding that deleterious mutations influence introgression dynamics.

Adaptive and maladaptive genetic diversity in small populations; insights from the Brook Charr (Salvelinus fontinalis) case study

The paper examines genetic diversity in Brook Charr populations, finding increased deleterious mutations in isolated populations and environmental associations with adaptive loci.

Balancing selection via life-history trade-offs maintains an inversion polymorphism in a seaweed fly

The paper shows that a chromosomal inversion in seaweed flies is maintained by life-history trade-offs and antagonistic pleiotropy, revealing balancing selection mechanisms.

Domestication and temperature modulate gene expression signatures and growth in the Australasian snapper Chrysophrys auratus

The paper examines how domestication and temperature affect gene expression and growth in Australasian snapper, identifying key pathways involved in development and immune responses.

Combining population genomics and forward simulations to investigate stocking impacts: A case study of Muskellunge (Esox masquinongy) from the St. Lawrence River basin

This study uses genomic data and simulations to assess the genetic impacts of fish stocking on Muskellunge populations in the St. Lawrence River basin, finding weak effects in large rivers but stronger effects in smaller stocked populations.

Karyotype-environment associations support a role for a chromosomal inversion in local adaptation among North American populations of the seaweed fly Coelopa frigida

The paper investigates a chromosomal inversion in Coelopa frigida, finding it polymorphic in North America and associated with environmental factors and adult size.

Genomics and telemetry suggest a role for migration harshness in determining overwintering habitat choice, but not gene flow, in anadromous Arctic Char

This study combines genomics and telemetry to show that Arctic Char choose overwintering habitats based on migration difficulty, not gene flow, and identifies genes related to muscle and cardiac function under selection.

Reconstructing The Demographic History Of Atlantic Salmon (Salmo salar) Across Its Distribution Range Using Approximate Bayesian Computations

This study uses approximate Bayesian computations to reconstruct the demographic history of Atlantic Salmon, revealing gene flow and selection effects across its range.