Marion Ballenghien

Marion Ballenghien
Station Biologique de Roscoff · Adaptation et Diversité en Milieu Marin - UMR 7144 CNRS UPMC

Master of Science

About

51
Publications
11,233
Reads
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1,464
Citations
Citations since 2016
29 Research Items
1179 Citations
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2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Additional affiliations
January 2010 - December 2013
Université de Montpellier
Position
  • Ingénieur d'étude

Publications

Publications (51)
Article
Full-text available
Understanding drivers of biodiversity patterns is essential to evaluate the potential impact of deep-sea mining on ecosystems resilience. While the South West Pacific forms an independent biogeographic province for hydrothermal vent fauna, different degrees of connectivity among basins were previously reported for a variety of species depending on...
Article
Full-text available
Deep hydrothermal vents are highly fragmented and unstable habitats at all temporal and spatial scales. Such environmental dynamics likely play a non-negligible role in speciation. Little is, however, known about the evolutionary processes that drive population-level differentiation and vent species isolation and, more specifically, how geography a...
Article
Full-text available
The stalked barnacle Pollicipes pollicipes inhabits rocky shores from the Atlantic coasts of Brittany (France) to Senegal. Because of the culinary traditions of southern Europe, stalked barnacles represent an important target species for local fisheries on the Iberian Peninsula. To manage this fishery sustainably, it is therefore important to asses...
Article
Reconstructing ancestral characters on a phylogeny is an arduous task because the observed states at the tips of the tree correspond to a single realization of the underlying evolutionary process. Recently, it was proposed that ancestral traits can be indirectly estimated with the help of molecular data, based on the fact that life history traits i...
Article
Full-text available
Temperature is one of the most important range-limiting factors for many seaweeds. Driven by the recent climatic changes, rapid northward shifts of species’ distribution ranges can potentially modify the phylogeographic signature of Last Glacial Maximum. We explored this question in detail in the cold-tolerant kelp species Saccharina latissima, usi...
Preprint
Full-text available
Temperature is one of the most important range-limiting factors for many seaweeds. Driven by the recent climatic changes, rapid northward shifts of species’ distribution ranges can potentially modify the phylogeographic signature of Last Glacial Maximum such as increased genetic diversity at lower latitudes. To explore this question in detail in th...
Article
Full-text available
In the North-east (NE) Atlantic, most intertidal fucoids and warm-temperate kelps show unique low-latitude gene pools matching long-term climatic refugia. For cold-temperate kelps data are scarcer despite their unique cultural, ecological and economic significance. Here we test whether the amphi-Atlantic range of Laminaria digitata is derived from...
Article
Full-text available
Biological invasions are occurring at increasing rates since the onset of the twentieth century. While ports and marinas have been identified as a major point-of-entry for the spread of marine non-indigenous species (NIS), their relationships with wild habitats however needs further scrutiny. We had the rare opportunity to monitor the real-time col...
Poster
Full-text available
The PERCEBES project aspires to answer questions regarding the effects of harvesting on the intertidal community and recovery potential of stalked barnacle populations after harvesting, for which a Human Exclusion Experiment has been deployed over 2 years in 4 regions: coast of Alentejo (Portugal), Atlantic Islands (Galicia, Spain), Western Asturia...
Article
Full-text available
Morphological changes—such as dark spots, twisted stipes and deformed blades—have been observed in wild and cultivated Saccharina latissima. The putative cause for the disease symptoms is the filamentous endophytic brown alga Laminarionema elsbetiae, which is known to invade stipes and fronds of its hosts. Little is known about this interaction and...
Article
Full-text available
Ports and farms are well‐known primary introduction hotspots for marine non‐indigenous species (NIS). The extent to which these anthropogenic habitats are sustainable sources of propagules and influence the evolution of NIS in natural habitats was examined in the edible seaweed Undaria pinnatifida, native to Asia and introduced to Europe in the 197...
Preprint
Full-text available
This preprint has been reviewed and recommended by Peer Community In Evolutionary Biology ( http://dx.doi.org/10.24072/pci.evolbiol.100042 ). Reconstructing ancestral characters on a phylogeny is an arduous task because the observed states at the tips of the tree correspond to a single realization of the underlying evolutionary process. Recently, i...
Article
Full-text available
Background Contamination is a well-known but often neglected problem in molecular biology. Here, we investigated the prevalence of cross-contamination among 446 samples from 116 distinct species of animals, which were processed in the same laboratory and subjected to subcontracted transcriptome sequencing. ResultsUsing cytochrome oxidase 1 as a bar...
Article
Full-text available
The fixation probability of a recessive beneficial mutation is increased on the X or Z chromosome, relative to autosomes, because recessive alleles carried by X or Z are exposed to selection in the heterogametic sex. This leads to an increased dN/dS ratio on sex chromosomes relative to autosomes, a pattern called the "fast-X" or "fast-Z" effect. Be...
Article
Full-text available
Comparative population genetics in asexual vs. sexual species offers the opportunity to investigate the impact of asexuality on genome evolution. Here we analyse coding sequence polymorphism and divergence patterns in the fascinating Lineus ribbon worms, a group of marine, carnivorous nemerteans with unusual regeneration abilities, and in which ase...
Article
Full-text available
Termites are eusocial insects related to cockroaches that feed on lignocellulose. These insects are key species in ecosystems since they recycle a large amount of nutrients but also are pests, exerting major economic impacts. Knowledge on the molecular pathways underlying reproduction, caste differentiation or lignocellulose digestion would largely...
Article
Full-text available
Because mating systems affect population genetics and ecology, they are expected to impact the molecular evolution of species. Self-fertilizing species experience reduced effective population size, recombination rates and heterozygosity, which in turn should decrease the efficacy of natural selection, both adaptive and purifying, and the strength o...
Article
Full-text available
Mammalian and avian genomes are characterized by a substantial spatial heterogeneity of GC content, which is often interpreted as reflecting the effect of local GC-biased gene conversion, a meiotic repair bias that favours G and C over A and T alleles in high-recombining genomic regions. Surprisingly, the first fully-sequenced non-avian sauropsid (...
Article
Full-text available
Genetic diversity is the amount of variation observed between DNA sequences from distinct individuals of a given species. This pivotal concept of population genetics has implications for species health, domestication, management and conservation. Levels of genetic diversity seem to vary greatly in natural populations and species, but the determinan...
Article
Full-text available
The evolution of reproductive division of labour and social life in social insects has lead to the emergence of several life-history traits and adaptations typical of larger organisms: social insect colonies can reach masses of several kilograms, they start reproducing only when they are several years old, and can live for decades. These features a...
Article
Use of SNPs has been favored due to their abundance in plant and animal genomes, accompanied by the falling cost and rising throughput capacity for detection and genotyping. Here, we present in vitro (obtained from targeted sequencing) and in silico discovery of SNPs, and the design of medium-throughput genotyping arrays for two oyster species, the...
Article
Full-text available
Author Summary The analysis of genomic variation between individuals of a given species has so far been restricted to a small number of model organisms, such as human and fruitfly, for which a fully sequenced, well-annotated reference genome was available. Here we show that, thanks to next-generation high-throughput sequencing technologies and app...
Data
Adaptive amino-acid substitution rate in nine animal species. From left to right: R. grassei (termite), P. troglodytes (chimpanzee), L. granatensis (hare), E. orbicularis (turtle), O. edulis (oyster), O. cuniculus (rabbit), C. intestinalis A (tunicate), D. simulans (fruit fly), C. intestinalis B (tunicate). πS is the average synonymous diversity. d...
Data
Synonymous and non-synonymous site-frequency spectra in four species. See Figure 2 for legend. (PPT)
Data
Robustness of population genomic statistics to several SNP calling options. (DOC)
Data
Detection of hidden paralogy in polymorphism datasets generated by mapping reads to a reference theory and simulations. (DOC)
Data
Sequencing depth does not influence the estimated heterozygosity. Each dot is for an individual. Heterozygosity was calculated from both synonymous and non-synonymous positions, and averaged across contigs. Coverage was calculated after the removal of potential PCR duplicates, and averaged across contigs. (PPT)
Data
Mitochondrial DNA (cox1) trees for the five species analysed in this study. Sample labels: see Table S1. Reference sequences (blue) were taken from Genbank. S2a: turtle; S2b: hare; S2c: ciona; S2d: termite; S2e: oyster. (PPT)
Data
Between-individual geographic versus genetic distances. Each dot is for a pair of individuals. X-axis: geographic distances in km; Y-axis: genetic distance, defined as (Hb−Hw)/Hw, where Hb is the probability of drawing two distinct alleles when sampling one copy from each of the two considered individuals, and Hw is the average heterozygosity of th...
Data
Geographic origin and RNA extraction protocols for the 67 individuals analysed in this study. Preservation method: N: Liquid nitrogen; R: RNAlater buffer; G: Guanidinium thiocyanate-Phenol solution. RNA isolation method: GTPC: Guanidinium thiocyanate-Phenol Chloroform; SM: Silica membrane. (XLS)
Article
Full-text available
In animals, the population genomic literature is dominated by two taxa, namely mammals and drosophilids, in which fully sequenced, well-annotated genomes have been available for years. Data from other metazoan phyla are scarce, probably because the vast majority of living species still lack a closely related reference genome. Here we achieve de nov...
Article
Selection processes are believed to be an important evolutionary driver behind the successful establishment of nonindigenous species, for instance through adaptation for invasiveness (e.g. dispersal mechanisms and reproductive allocation). However, evidence supporting this assumption is still scarce. Genome scans have often identified loci with aty...
Article
Next-generation sequencing (NGS) technologies offer the opportunity for population genomic study of non-model organisms sampled in the wild. The transcriptome is a convenient and popular target for such purposes. However, designing genetic markers from NGS transcriptome data requires assembling gene-coding sequences out of short reads. This is a co...
Article
In silico mining of an expressed sequence tags (ESTs) library was found to be efficient at isolating simple sequence repeats (SSRs) loci in the non-indigenous marine mollusc Crepidula fornicata. Twelve SSR loci were developed for routine genotyping. Cross-species amplification to 8 other Crepidula species showed that the 12 loci are highly specific...
Article
Full-text available
Next Generation Sequencing technologies (NGS) are rapidly invading many evolutionary and ecological fields, such as phylogenomics, molecular evolution, population genomics and molecular ecology. Among the potential targets of NGS is transcriptome sequencing, a fast and relatively cheap way to generate massive amounts of coding sequence data, offeri...

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Projects

Project (1)
Archived project
In this project coordinated by Philippe Potin (UMR CNRS UPMC 8227, Station Biologique de Roscoff, France) , I am responsible of WP2 "algal breeding and genetic resources" that aims to understand the fundamental biology of seaweed life cycles and to increase basic knowledge on cultivation, genetic resources and domestication of selected intertidal and subtidal seaweeds.