A5091867296- Genetic diversity and population structure
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Marine and fisheries research
- Identification and Quantification in Food
- Fish Biology and Ecology Studies
- Aquaculture Nutrition and Growth
- Aquatic Invertebrate Ecology and Behavior
- Physiological and biochemical adaptations
- Marine Biology and Environmental Chemistry
- Marine Biology and Ecology Research
- Environmental Toxicology and Ecotoxicology
- Ocean Acidification Effects and Responses
- Aquaculture disease management and microbiota
- Ichthyology and Marine Biology
- Marine and coastal plant biology
- Genetic and phenotypic traits in livestock
- Animal Behavior and Reproduction
- Evolution and Genetic Dynamics
- Marine Ecology and Invasive Species
- Mercury impact and mitigation studies
- Italian Literature and Culture
- 3D Surveying and Cultural Heritage
- Aquatic Ecosystems and Biodiversity
- Optical measurement and interference techniques
Ifremer
2014-2024
Laboratoire des Sciences de l'Environnement Marin
2014-2024
Centre National de la Recherche Scientifique
2005-2023
Institut Universitaire Européen de la Mer
2013-2023
Université de Bretagne Occidentale
2005-2023
Institut de Recherche pour le Développement
2014-2023
Université Européenne de Bretagne
2014-2022
University of Gothenburg
2012-2017
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2006-2007
Parallel evolution of similar phenotypes provides strong evidence for the operation natural selection. Where these contribute to reproductive isolation, they further support a role divergent, habitat-associated selection in speciation. However, observation pairs divergent ecotypes currently occupying contrasting habitats distinct geographical regions is not sufficient infer parallel origins. Here we show striking phenotypic divergence between populations rocky-shore gastropod, Littorina...
Abstract We present practical lessons learned from applying the recent close-kin mark–recapture (CKMR) abundance estimation method to thornback ray (Raja clavata). For CKMR, related individuals are identified their genotypes and number pattern is used for estimation. genotyped over 7000 collected in Bay of Biscay using Single Nucleotide Polymorphism (SNP) markers finding 99 parent–offspring pairs. The estimated adult rays central was around 135000 (CV 0.19) 2013. In total, four were drawn:...
Abstract Effective population size ( N e ) is a key parameter of genetics. However, remains challenging to estimate for natural populations as several factors are likely bias estimates. These include sampling design, sequencing method, and data filtering. One issue inherent the restriction site‐associated DNA (RADseq) protocol missing SNP selection criteria (e.g., minimum minor allele frequency, number SNPs). To evaluate potential impact on estimates (Linkage Disequilibrium method) we used...
Understanding the relationship between growth and temperature will aid in evaluation of thermal stress threats to ectotherms context anticipated climate changes. Most Pecten maximus scallops living at high latitudes northern hemisphere have a larger maximum body size than individuals further south, common pattern among many ectotherms. We investigated differences daily shell scallop populations along Northeast Atlantic coast from Spain Norway. This study design allowed us address precisely...
Understanding the ecological and evolutionary forces that determine genetic structure spread of invasive species is a key component invasion biology. The bay barnacle, Balanus improvisus (= Amphibalanus improvisus), one most successful aquatic invaders worldwide, characterised by broad environmental tolerance. Although can through natural larval dispersal, human-mediated transport (primarily) shipping has almost certainly contributed to current global distribution this species. Despite its...
Recent developments in genomics are advancing our understanding of the processes shaping population structure wild organisms. In particular, reduced representation sequencing has facilitated generation dense genetic marker datasets that provide greater power for resolving structure, investigating role selection and reconstructing demographic histories. We therefore used RAD to study great scallop Pecten maximus its sister species P. jacobeus along a latitudinal cline Europe. Analysis 219...
Processes regulating population connectivity are complex, ranging from extrinsic environmental factors to intrinsic individual based features, and a major force shaping the persistence of fish species responses harvesting change. Here we developed an integrated assessment demographic genetic European flounder Platichthys flesus in northeast Atlantic (from Norwegian Portuguese coast) Baltic Sea. Specifically, used Bayesian infinite mixture model infer most likely number natal sources...
Insufficient knowledge about physiological processes underpinning reproduction in the European flat oyster, Ostrea edulis (Linnaeus), presents a number of unique challenges when designing large-scale selective breeding program for hatchery production. The oyster is larviparous, protandric hermaphrodite wherein asynchronous spawns and variable sex ratios can lead to loss genetic diversity inbreeding depression within populations as result disproportionate gametic contributions mass matings. A...
Genetic variation within and among populations is influenced by the genetic content of founders migrants following establishment. This particularly true if are small, migration rate low habitats arranged in a stepping-stone fashion. Under these circumstances level multiple paternity critical since multiply mated females bring more into founder groups than single females. One such example marine snail Littorina saxatilis that during postglacial times has invaded mainland refuge areas...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 330:201-211 (2007) - doi:10.3354/meps330201 Genetic structure of whiting Merlangius merlangus in northeast Atlantic and adjacent waters Grégory Charrier1,2,*, Steve H. Coombs3, Ian McQuinn4, Jean Laroche1 1Laboratoire LEMAR (UMR CNRS 6539), Institut Universitaire Européen de la Mer, Place Nicolas Copernic,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 472:257-273 (2013) - DOI: https://doi.org/10.3354/meps09797 Genetic structure of European flounder Platichthys flesus: effects both southern limit species' range and chemical stress I. Calvès1, E. Lavergne1,2, A. L. Meistertzheim3, G. Charrier4, H. Cabral5, B. Guinand6, Quiniou1, J. Laroche1,* 1Université de...
Studying demographic and genetic connectivity can help assess marine metapopulation structure. Rays skates have no larval phase; hence, population only result from active movement of individuals. Using thornback ray (Raja clavata) in European waters as a case study, were studied for 11 putative populations with unequal abundances two hypotheses dispersal rates. Genetic simulation results highlighted three large metapopulations: the Mediterranean, around Azores, on Northeast Atlantic shelf....
We report the isolation, development and multiplex optimisation of 12 new microsatellite loci for great scallop, Pecten maximus. Diversity was moderate to high, with number alleles ranging from 4 20 observed heterozygosity between 0.28 0.88. Progeny produced in a commercial hatchery used test locus power parentage assignment. The percentage offspring that unambiguously assigned unique pair parents 97% (software package CERVUS-COLONY). Parentage assignment revealed 22% studied progeny...
Abstract In order to explore the population genetic structure of pollack (Pollachius pollachius) along European coast, 282 fish sampled from four locations Atlantic French coast and one location off southern Norway were genotyped at six microsatellite loci. The limited differentiation among samples may be due high levels larval dispersal, through passive drift with oceanic currents. Alternatively, populations have diverged too recently for significant become evident. Furthermore, small...