19 Works

Data from: A genome-wide approach to the phylogeography of the mussel Mytilus galloprovincialis in the Adriatic and the Black Seas

Marta Paterno, Levent Bat, Jamila B Souissi, Elisa Boscari, Aurore Chassanite, Leonardo Congiu, Giuseppe Guarnieri, Claudia Kruschel, Vesna Macic, Ilaria A Marino, Dragos Micu, Nataliya Milchakova, Marina Panayotova, Chiara Papetti, Stefan Strungaru, Valentina R Todorova, Emanuela Voutsinas & Lorenzo Zane
Connectivity between populations shapes the genetic structure of species being crucial for an effective management of environmental resources. Genetic approaches can provide indirect measures of connectivity, allowing the identification of genetically differentiated - unconnected - populations. In this study, we applied a 2b-RAD approach based on hundreds of polymorphic loci to provide the first detailed insight into the population genomics of the Mediterranean mussel Mytilus galloprovincialis in part of its native geographical range. We sampled...

Data from: A closer examination of the 'abundant center' hypothesis for reef fishes

Itai Granot, Hagar Yancovitch Shalom, Shane Blowes, Alan Friedlander, Camille Mellin, Carlos Ferreira, Arias-González Ernesto, Michel Kulbicki, Sergio Floeter, Pascal Chabanet, Valeriano Parravicini & Jonathan Belmaker
Aim: The ‘abundant center’ hypothesis states that species are more abundant at the center of their range. However, several recent large-scale studies have failed to find evidence for such a pattern. Here we use extensive global data of reef fishes to test the strength of the 'abundant center' pattern, and to examine variation in the patterns across species using life history and ecological traits. Location: Marine habitat at a global extent: from Indo-Pacific to Atlantic...

Construire l’interdisciplinarité en contexte institutionnel, une expérience de laboratoire en SHS

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Data from: Reef accessibility impairs the protection of sharks

Jean-Baptiste Juhel, Laurent Vigliola, David Mouillot, Michel Kulbicki, Tom B. Letessier, Jessica J. Meeuwig & Laurent Wantiez
1. Reef sharks are declining worldwide under ever increasing fishing pressure with potential consequences on ecosystem functioning. Marine protected areas (MPAs) are currently one of the management tools to counteract the pervasive impacts of fishing. However, MPAs in which reef sharks are abundant tend to be located in remote and underexploited areas preventing a fair assessment of management effectiveness beyond remoteness from human activities. 2. Here we determine the conditions under which MPAs can effectively...

Data from: Large-scale, multi-directional larval connectivity among coral reef fish populations in the Great Barrier Reef Marine Park

David H. Williamson, Hugo B. Harrison, Glenn R. Almany, Michael L. Berumen, Michael Bode, Mary C. Bonin, Severine Choukroun, Peter J. Doherty, Ashley J. Frisch, Pablo Saenz-Agudelo & Geoffrey P. Jones
Larval dispersal is the key process by which populations of most marine fishes and invertebrates are connected and replenished. Advances in larval tagging and genetics have enhanced our capacity to track larval dispersal, assess scales of population connectivity, and quantify larval exchange among no-take marine reserves and fished areas. Recent studies have found that reserves can be a significant source of recruits for populations up to 40 km away, but the scale and direction of...

Écrire la domination : Fe en disfraz (2009) de Mayra Santos-Febres, un exemple de résistance

Grace Cathy Agamboue Azizet
Malgré l’émergence de certains discours en faveur de la réhabilitation humaine et sociale des noir-e-s, force est de constater que le statut de la femme noire reste encore au stade embryonnaire dans les historiographies officielles des Amériques. Sa présence demeure encore largement « fantôme » dans un contexte latino-américain enclin à la dépréciation imaginaire et à la disqualification onto-politique des noir.e.s. Face à ces limites identitaires, les femmes noires et afro-descendantes caribéennes et latino-américaines s’insurgent...

Data from: Patterns and persistence of larval retention and connectivity in a marine fish metapopulation

Pablo Saenz-Agudelo, Geoffrey P. Jones, Simon R. Thorrold & Serge Planes
Connectivity, the demographic linking of local populations through the dispersal of individuals, is one of the most poorly understood processes in population dynamics, yet has profound implications for conservation and harvest strategies. For marine species with pelagic larvae, direct estimation of connectivity remains logistically challenging and has mostly been limited to single snapshots in time. Here, we document seasonal and interannual patterns of larval dispersal in a metapopulation of the coral reef fish Amphiprion polymnus....

Data from: Differential divergence in autosomes and sex chromosomes is associated with intra-island diversification at a very small spatial scale in a songbird lineage

Yann Bourgeois, Joris Bertrand, Boris Delahaie, Helene Holota, Christophe Thebaud & Borja Mila
Recently diverged taxa showing marked phenotypic and ecological diversity are optimal systems to understand the genetic processes underlying speciation. We used genome-wide markers to investigate the diversification of the Reunion grey white eye (Zosterops borbonicus) on the small volcanic island of Reunion (Mascarene archipelago), where this species complex exhibits four geographic forms that are parapatrically distributed across the island and differ strikingly in plumage colour. One form restricted to the highlands is separated by a...

OTUs Table and fastq sequences from environmental DNA applied to trematode communities

Philippe Douchet
This OTUs table and fastq sequences underlie the main results of the study "Make visible the invisible: Optimized development of an environmental DNA metabarcoding tool for the characterization of trematode parasitic communities". In this study, our aim was to develop an optimized eDNA-based metabarcoding approach to detect trematodes and characterize their communities, most of which associated to aquatic environments. We thus assessed the ability of our eDNA-based metabarcoding approach to reconstruct trematode communities compared to...

Data from: A multispecies approach reveals hot-spots and cold-spots of diversity and connectivity in invertebrate species with contrasting dispersal modes

Abigail E. Cahill, Aurelien De Jode, Sophie Dubois, Zoheir Bouzaza, Didier Aurelle, Emilie Boissin, Olivier Chabrol, Romain David, Emilie Egea, Jean-Baptiste Ledoux, Bastien Merigot, Alexandra Anh-Thu Weber & Anne Chenuil
Genetic diversity is crucial for species’ maintenance and persistence, yet is often overlooked in conservation studies. Species diversity is more often reported due to practical constraints, but it is unknown if these measures of diversity are correlated. In marine invertebrates, adults are often sessile or sedentary and populations exchange genes via dispersal of gametes and larvae. Species with a larval period are expected to have more connected populations than those without larval dispersal. We assessed...

Data from: Crossing phenotype heritability and candidate gene expression in grafted black-lipped pearl oyster Pinctada margaritifera, an animal chimera

Carole Blay, Serge Planes & Chin-Long Ky
Grafting mantle tissue of a donor pearl oyster into the gonad of a recipient oyster results in the formation of a chimera, the pearl sac. The phenotypic variations of this chimera are hypothesized to be the result of interactions between the donor and recipient genomes. In this study, the heritability of phenotypic variation and its association with gene expression were investigated for the first time during P. margaritifera pearl production. Genetic variance was evaluated at...

Le régime spécifique des mesures d’éloignement dans les outre-mer : le cas de l'absence de recours suspensif

M'Saïdié Thomas
L’application du droit des étrangers est variable selon que l’on se trouve en France continentale ou en outre-mer. Les collectivités territoriales régies par l’article 73 de la Constitution sont en principe pleinement intégrées dans le champ des dispositions issues du code de l’entrée et du séjour des étrangers et du droit d’asile (CESEDA), contrairement aux collectivités régies par l’article 74 de la Constitution, auxquelles l’application de ces règles ne devrait être possible que pour autant...

Simultaneous genotyping of snails and infecting trematode parasites using high-throughput amplicon sequencing.

Cyril Hammoud, Stephen Mulero, Bert Van Bocxlaer, Jérôme Boissier, Dirk Verschuren, Christian Albrecht & Tine Huyse
Several methodological issues currently hamper the study of entire trematode communities within populations of their intermediate snail hosts. Here we develop a new workflow using high-throughput amplicon sequencing to simultaneously genotype snail hosts and their infecting trematode parasites. We designed primers to amplify 4 snail and 5 trematode markers in a single multiplex PCR. While also applicable to other genera, we focused on medically and economically important snail genera within the Superorder Hygrophila and targeted...

Data from: Vertebrate host protective immunity drives genetic diversity and antigenic polymorphism in Schistosoma mansoni

Sophie Beltran, Benjamin Gourbal, Jerome Boissier, David Duval, Sylvie Kieffer-Jaquinod, Raymond J Pierce, Christoph Grunau, Andre Théron & Guillaume Mitta
Schistosomes are gonochoric blood parasites with a complex life cycle responsible for a disease of considerable medical and veterinary importance in tropical and subtropical regions. Understanding the evolution of schistosome genetic diversity is clearly of fundamental importance to interpreting schistosomiasis epidemiology and disease transmission patterns of this parasite. In this paper we have the putative role of the host immune system in the selection of male genetic diversity. We demonstrated the link between genetic dissimilarity...

Environmental DNA metabarcoding reveals and unpacks a biodiversity conservation paradox in Mediterranean marine reserves

Emilie Boulanger, Nicolas Loiseau, Alice Valentini, Véronique Arnal, Pierre Boissery, Tony Dejean, Julie Deter, Nacim Guellati, Florian Holon, Jean-Baptiste Juhel, Philippe Lenfant, Stephanie Manel & David Mouillot
Although we are currently experiencing worldwide biodiversity loss, local species richness does not always decline under anthropogenic pressure. This conservation paradox may also apply in protected areas but has not yet received conclusive evidence in marine ecosystems. Here, we survey fish assemblages in six Mediterranean no-take reserves and their adjacent fishing grounds using environmental DNA (eDNA) while controlling for environmental conditions. We detect less fish species in marine reserves than in nearby fished areas. The...

Environmental DNA metabarcoding reveals and unpacks a biodiversity conservation paradox in Mediterranean marine reserves

Emilie Boulanger, Nicolas Loiseau, Alice Valentini, Véronique Arnal, Pierre Boissery, Tony Dejean, Julie Deter, Nacim Guellati, Florian Holon, Jean-Baptiste Juhel, Philippe Lenfant, Stephanie Manel & David Mouillot
Although we are currently experiencing worldwide biodiversity loss, local species richness does not always decline under anthropogenic pressure. This conservation paradox may also apply in protected areas but has not yet received conclusive evidence in marine ecosystems. Here, we survey fish assemblages in six Mediterranean no-take reserves and their adjacent fishing grounds using environmental DNA (eDNA) while controlling for environmental conditions. We detect less fish species in marine reserves than in nearby fished areas. The...

Morphology and herbivory of Egregia menziesii at sites from California to Washington

Nicholas Burnett, Eric Armstrong, Rosemary Romero, Charlotte Runzel & Richelle Tanner
Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Wounds, in particular, can result in large amounts of tissue breaking away from macroalgae, amplifying the damage initially caused by herbivores. Herbivores that commonly wound macroalgae often only occur over a portion of a macroalga’s lifespan or geographic range. However, we know little about the influence of these periodic or regional occurrences of herbivores on the large-scale seasonal...

Contrasting intensity of aragonite dissolution in glacial vs. interglacial intervals of a sea-level controlled subtropical carbonate succession

Lars Reuning , Hanaa Deik , Benjamin Petrick , Hideko Takayanagi , Yasufumi Iryu , Margot Courtillat & Maria-Angela Bassetti
Aragonite and high-Mg calcite are abundant in modern, neritic temperate water systems but are nearly absent from their fossil counterparts. Dissolution of these metastable mineral phases will often leave no visible trace in the sedimentary record. Furthermore, it has been proposed that dolomitization is driven by reflux of mesohaline, aragonite undersaturated waters and that dolomite crystal growth is tightly coupled to aragonite dissolution in a temperate carbonate slope system. This study aims to clarify the...

Data from: Vertebrate host protective immunity drives genetic diversity and antigenic polymorphism in Schistosoma mansoni

Sophie Beltran, Benjamin Gourbal, Jerome Boissier, David Duval, Sylvie Kieffer-Jaquinod, Raymond J Pierce, Christoph Grunau, Andre Théron & Guillaume Mitta
Schistosomes are gonochoric blood parasites with a complex life cycle responsible for a disease of considerable medical and veterinary importance in tropical and subtropical regions. Understanding the evolution of schistosome genetic diversity is clearly of fundamental importance to interpreting schistosomiasis epidemiology and disease transmission patterns of this parasite. In this paper we have the putative role of the host immune system in the selection of male genetic diversity. We demonstrated the link between genetic dissimilarity...

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