11 Works

Data from: Food availability modulates the effects of maternal antibodies on growth and immunity in young feral pigeons

Ahmad Ismail, Lisa Jacquin, Claudy Haussy, Samuel Perret & Julien Gasparini
It is now widely acknowledged that mothers can transfer their own immune experience to their progeny through the allocation of specific maternal antibodies (hereafter referred as MatAb) that can shape offspring phenotype and affect their fitness. However, the importance of environmental variability in modulating the effects of MatAb on offspring traits is still elusive. Using an experimental approach, we investigated how food availability interacted with MatAb to solve the trade-off between humoral immunity and growth...

Data from: Ecosystem productivity is associated to bacterial phylogenetic distance in surface marine waters

Pierre E. Galand, Ian Salter & Dimitri Kalenitchenko
Understanding the link between community diversity and ecosystem function is a fundamental aspect of ecology. Systematic losses in biodiversity are widely acknowledged but the impact this may exert on ecosystem functioning remains ambiguous. There is growing evidence of a positive relationship between species richness and ecosystem productivity for terrestrial macroorganisms, but similar links for marine microorganisms, which help drive global climate, are unclear. Community manipulation experiments show both positive and negative relationships for microbes. These...

Data from: The complex phylogeography of the Indo-Malayan Alophoixus bulbuls with the description of a putative new ring species complex

Jérôme Fuchs, Per G. P. Ericson, Céline Bonillo, Arnaud Couloux & Eric Pasquet
The Indo-Malayan bioregion has provided some of the most spectacular discoveries of new vertebrate species (e.g. saola, khanyou, bare-faced bulbul) over the last 25 years. Yet, very little is known about the processes that led to the current biodiversity in this region. We reconstructed the phylogeographic history of a group of closely related passerines, the Alophoixus bulbuls. These birds are continuously distributed in Indo-Malaya around the Thailand lowlands such that their distribution resembles a ring....

Data from: Inference of domestication history and differentiation between early- and late-flowering varieties in pearl millet

Yann Dussert, Alodie Snirc & Thierry Robert
Pearl millet (Pennisetum glaucum) is a staple crop in Sahelian Africa. Farmers usually grow varieties with different cycle lengths and complementary functions in Sahelian agrosystems. Both the level of genetic differentiation of these varieties and the domestication history of pearl millet have been poorly studied. We investigated the neutral genetic diversity and population genetic structure of early- and late-flowering domesticated and wild pearl millet populations using 18 microsatellite loci and 8 nucleotide sequences. Strikingly, early-...

Data from: Precocious sexual dimorphism and the Lilliput effect in Neo-Tethyan Ostracoda (Crustacea) through the Permian–Triassic boundary

Marie-Beatrice Forel, Sylvie Crasquin, Anisong Chitnarin, Lucia Angiolini & Maurizio Gaetani
The Elikah River section spanning the Lopingian (Late Permian) to the Griesbachian (Early Triassic) time interval in the Central Alborz Mountains (north Iran) was sampled for ostracod analysis. We report 79 species distributed among 38 genera. Four new species are described: Acratia? pervagata Forel sp. nov., Microcheilinella alborzella Forel sp. nov., Basslerella superarella Crasquin sp. nov. and Cavellina nesenensis Crasquin sp. nov. The ontogeny of 13 species is described and sexual dimorphism in the genus...

Data from: Effects of interference between selected loci on the mutation load, inbreeding depression and heterosis

Denis Roze
A classical prediction from single-locus models is that inbreeding increases the efficiency of selection against partially recessive deleterious alleles (purging), thereby decreasing the mutation load and level of inbreeding depression. However, previous multilocus simulation studies found that increasing the rate of self-fertilization of individuals may not lead to purging and argued that selective interference among loci causes this effect. In this article, I derive simple analytical approximations for the mutation load and inbreeding depression, taking...

Data from: Feather bacterial load shapes the trade-off between preening and immunity in pigeons

Sarah Leclaire, Gábor Árpád Czirják, Abdessalem Hammouda & Julien Gasparini
Background: Complex communities of bacteria inhabit the feathers of all birds. Under normal conditions, individuals maintain a healthy state by defending themselves against these potential invaders by preening. The immune system is only triggered when bacteria gain access into the body. Preening is, however, costly and may trade-off with investment in the immune system. To shed light on how birds balance the trade-off between immunity and preen secretions when facing high or low feather bacterial...

Data from: Diet is the primary determinant of bacterial community structure in the guts of higher termites

Aram Mikaelyan, Carsten Dietrich, Tim Köhler, Michael Poulsen, David Sillam-Dussès & Andreas Brune
The gut microbiota of termites plays critical roles in the symbiotic digestion of lignocellulose. While phylogenetically ‘lower termites’ are characterized by a unique association with cellulolytic flagellates, higher termites (family Termitidae) harbour exclusively prokaryotic communities in their dilated hindguts. Unlike the more primitive termite families, which primarily feed on wood, they have adapted to a variety of lignocellulosic food sources in different stages of humification, ranging from sound wood to soil organic matter. In this...

Data from: Experimental exposure to trace metals affects plumage bacterial community in the feral pigeon

Marion Chatelain, Adrien Frantz, Julien Gasparini & Sarah Leclaire
Bacteria are fundamental associates of animals, and recent studies have highlighted their major role in host behaviour, immunity or reproductive investment. Thus, any environmental factor modifying bacterial community may affect host fitness. In birds, trace metals emitted by anthropogenic activities accumulate onto the plumage where they may alter bacterial community and ultimately affect bird fitness. Although trace metals are current major environmental issues in urban habitats, their effects on feather bacterial community have never been...

Data from: Seasonal diversity and dynamics of haptophytes in the Skagerrak, Norway, explored by high-throughput sequencing

Elianne Sirnæs Egge, Torill Vik Johannessen, Tom Andersen, Wenche Eikrem, Lucie Bittner, Aud Larsen, Ruth-Anne Sandaa, Bente Edvardsen & Elianne Sirnaes Egge
Microalgae in the division Haptophyta play key roles in the marine ecosystem and in global biogeochemical processes. Despite their ecological importance, knowledge on seasonal dynamics, community composition and abundance at the species level is limited due to their small cell size and few morphological features visible under the light microscope. Here, we present unique data on haptophyte seasonal diversity and dynamics from two annual cycles, with the taxonomic resolution and sampling depth obtained with high-throughput...

Data from: Evolution and maintenance of haploid-diploid life cycles in natural populations: the case of the marine brown alga Ectocarpus

Lucía Couceiro, Mickael Le Gac, Heather M. Hunsperger, Stéphane Mauger, Christophe Destombe, J. Mark Cock, Sophia Ahmed, Susana M. Coelho, Myriam Valero & Akira F. Peters
The evolutionary stability of haploid-diploid life cycles is still controversial. Mathematical models indicate that niche differences between ploidy phases may be a necessary condition for the evolution and maintenance of these life cycles. Nevertheless, experimental support for this prediction remains elusive. In the present work, we explored this hypothesis in natural populations of the brown alga Ectocarpus. Consistent with the life cycle described in culture, E. crouaniorum in NW France and E. siliculosus in SW...

Registration Year

  • 2015
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Affiliations

  • Sorbonne University
    11
  • French National Centre for Scientific Research
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  • University of Washington
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  • Institut de Biologie Paris-Seine
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  • University of Oslo
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  • University of Leeds
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  • Genoscope
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  • University of Paris-Sud
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  • University of Copenhagen
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  • Norwegian Institute for Water Research
    1