15 Works

Estimating heritability in honeybees: comparison of three major methods based on empirical and simulated datasets

Hélène Jourdan-Pineau, Gaëlle Antoine, Julien Galataud, Hélène Delatte, Christophe Simiand & Johanna Clémencet
The genetic contribution to phenotypic variation (namely the heritability) affects the response to selection. In honeybee, the haplodiploid sex determination does not allow the straightforward use of classical quantitative genetics methods to estimate heritability and genetic correlation. Nevertheless, specific methods have been developed for about 40 years. In particular, sibling analyses are frequently used with three main methods: an historical model using the average colony relatedness, a half-sibs/full-sibs model and the more recent animal model....

Collapse of dispersal trait diversity across a long-term chronosequence reveals a strong negative impact of frugivore extinctions on forest resilience

Sébastien Albert, Olivier Flores & Dominique Strasberg
1. Understanding how seed dispersal disruption may alter plant community diversity and dynamics over a large temporal scale remains a challenge. Here, we use a long-term chronosequence to compare changes in the richness and composition of different dispersal trait assemblages in communities established before and after human colonisation in the Mascarene archipelago. 2. Our study was located on Réunion on the slopes of the Piton de la Fournaise, one of the most active volcanoes worldwide....

Data from: Spatial patterns of AFLP diversity in Bulbophyllum occultum (Orchidaceae) indicate long-term refugial isolation in Madagascar and long-distance colonization effects in La Réunion

Ursula Jaros, Gunter A. Fischer, Thierry Pailler & Hans Peter Comes
Bulbophyllum occultum, an epiphytic orchid mainly distributed in the rainforests of (north)eastern Madagascar and La Réunion, represents an interesting model case for testing the effects of anthropogenic vs historical (e.g., climate induced) habitat isolation and long-distance colonization on the genetic structure of plant species with disjunct distributions in the Madagascan region. To this aim, we surveyed amplified fragment length polymorphisms (AFLPs) across 13 populations in Madagascar and nine in La Réunion (206 individuals in total)....

Data from: Comparative genomics of 43 strains of Xanthomonas citri pv. citri reveals the evolutionary events giving rise to pathotypes with different host ranges

Jonathan L. Gordon, Pierre Lefeuvre, Aline Escalon, Valérie Barbe, Stéphane Cruveiller, Lionel Gagnevin & Olivier Pruvost
Background: The identification of factors involved in the host range definition and evolution is a pivotal challenge in the goal to predict and prevent the emergence of plant bacterial disease. To trace the evolution and find molecular differences between three pathotypes of Xanthomonas citri pv. citri that may explain their distinctive host ranges, 42 strains of X. citri pv. citri and one outgroup strain, Xanthomonas citri pv. bilvae were sequenced and compared. Results: The strains...

Projet VELOUTIER - MNT plages coralliennes

Léo Pairain &
Le projet VELOUTIER est un projet financé dans le cadre du Programme Opérationnel Européen FEDER (2020-2022), avec la participation de la Région Réunion et l'Etat. Il est porté par le Centre d'Etude Des Tortues Marines (CEDTM) de La Réunion, avec pour objectif principal de rétablir et maintenir le bon état écologique d'espaces littoraux qui abritent des habitats de ponte avérés ou potentiels pour les tortues marines, et plus généralement d'améliorer les connaissances de ces espaces...

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...

Supplementary data for: From genomics to integrative taxonomy? The case study of Pocillopora corals

Nicolas Oury, Cyril Noel, Stefano Mona, Didier Aurelle & Hélène Magalon
With the advent of genomics, sequencing thousands of loci from hundreds of individuals now appears feasible at reasonable costs, allowing complex phylogenies to be resolved. This is particularly relevant for cnidarians, for which insufficient data due to the small number of currently available markers, coupled with difficulties in inferring gene trees and morphological incongruences, encrypts species boundaries, thereby blurring the study and conservation of these organisms. Yet, can genomics alone be used to delimit species...

Epiphytic bryophyte diversity and range distributions along an elevational gradient in Marojejy, Madagascar

Lovanomenjanahary Marline, Claudine Ah-Peng & Terry Hedderson
Describing spatial variation in species richness and understanding its links to ecological mechanisms are complementary approaches for explaining geographical patterns of richness. The study of elevational gradients holds enormous potential for understanding the factors underlying global diversity. This paper investigates the pattern of species richness and range-size distribution of epiphytic bryophytes along an elevational gradient in Marojejy National Park, North-east Madagascar. The main objectives are to describe bryophyte species composition and endemism in Marojejy National...

Human impact, climate and dispersal strategies determine plant invasion on islands

Severin D. H. Irl, Andreas H. Schweiger, Manuel J. Steinbauer, Claudine Ah-Peng, José R. Arévalo, Carl Beierkuhnlein, Alessandro Chiarucci, Curtis C. Daehler, José M. Fernández-Palacios, Olivier Flores, Christoph Kueffer, Petr Madera, Rüdiger Otto, Julienne M. I. Schweiger, Dominique Strasberg & Anke Jentsch
Aim: Biological invasions are likely determined by species dispersal strategies as well as environmental characteristics of a recipient region, especially climate and human impact. However, the contribution of climatic factors, human impact and dispersal strategies in driving invasion processes is still controversial and not well embedded in the existing theoretical considerations. Here, we study how climate, species dispersal strategies and human impact determine plant invasion processes on islands distributed in all major oceans in the...

Checklists of endemic tracheophytes and bryophytes to the French Overseas Territories

Simon Veron, Carlos Rodrigues-Vaz, Elise Lebreton, Claudine Ah-Peng, Vincent Boullet, Hervé Chevillotte, Stephan Robbert Gradstein, Joël Jérémie, Elisabeth Lavocat-Bernard, Marc Lebouvier, Jean-Yves Meyer, Jérôme Munzinger, Odile Poncy, Louis Thouvenot, Guillaume Viscardi, Guillaume Léotard, Olivier Gargominy, Sébastien Leblond, Marc Pignal, Germinal Rouhan, Sandrine Tercerie, Vanessa Invernon & Serge Muller
A broad range of climatic and biogeographical conditions are represented in the French Overseas Territories, from sub-polar to equatorial, resulting in a high diversity of endemic species. We mobilized data from herbaria, floras, checklists, literature, the expertise of botanists and plant ecologists to compile the most complete dataset on endemic vascular plants and bryophytes in the 15 French Overseas Territories. To date, 3748 spermatophytes (seed plants), 244 pteridophytes (ferns and lycophytes) and 448 bryophytes are...

Data from: Fungal endophytes of Vanilla planifolia across Réunion Island: isolation, distribution and biotransformation.

Shahnoo Khoyratty, Joëlle Dupont, Sandrine Lacoste, Tony L. Palama, Young H. Choi, Hye K. Kim, Bertrand Payet, Michel Grisoni, Mireille Fouillaud, Robert Verpoorte & Hippolyte Kodja
Background The objective of the work was to characterize fungal endophytes from aerial parts of Vanilla planifolia. Also, to establish their biotransformation abilities of flavor-related metabolites. This was done in order to find a potential role of endophytes on vanilla flavors. Results Twenty three MOTUs were obtained, representing 6 fungal classes. Fungi from green pods were cultured on mature green pod based media for 30 days followed by 1H NMR and HPLC-DAD analysis. All fungi...

Data from: Knowledge-based prediction of protein backbone conformation using a structural alphabet

Iyanar Vetrivel, Swapnil Mahajan, Manoj Tyagi, Lionel Hoffmann, Yves-Henri Sanejouand, Narayanaswamy Srinivasan, Alexandre De Brevern, Frédéric Cadet & Bernard Offmann
Libraries of structural prototypes that abstract protein local structures are known as structural alphabets and have proven to be very useful in various aspects of protein structure analyses and predictions. One such library, Protein Blocks, is composed of 16 standard 5-residues long structural prototypes. This form of analyzing proteins involves drafting its structure as a string of Protein Blocks. Predicting the local structure of a protein in terms of protein blocks is the general objective...

Data from: A combined field survey and molecular identification protocol for comparing forest arthropod biodiversity across spatial scales

Brent C. Emerson, Juliane Casquet, Heriberto López, Pedro Cardoso, Paulo A. V. Borges, Noémy Mollaret, Pedro Oromí, Dominique Strasberg & Christophe Thébaud
Obtaining fundamental biodiversity metrics such as alpha, beta and gamma diversity for arthropods is often complicated by a lack of prior taxonomic information and/or taxonomic expertise, which can result in unreliable morphologically based estimates. We provide a set of standardized ecological and molecular sampling protocols that can be employed by researchers whose taxonomic skills may be limited, and where there may be a lack of robust a priori information regarding the regional pool of species....

Data from: Serological evidence of lyssaviruses among bats on southwestern Indian Ocean islands

Julien Mélade, Stewart McCulloch, Beza Ramasindrazana, Erwan Lagadec, Magali Turpin, Hervé Pascalis, Steven M. Goodman, Wanda Markotter & Koussay Dellagi
We provide serological evidence of lyssavirus circulation among bats on southwestern Indian Ocean (SWIO) islands. A total of 572 bats belonging to 22 species were collected on Anjouan, Mayotte, La Réunion, Mauritius, Mahé and Madagascar and screened by the Rapid Fluorescent Focus Inhibition Test for the presence of neutralising antibodies against the two main rabies related lyssaviruses circulating on the African continent: Duvenhage lyssavirus (DUVV) and Lagos bat lyssavirus (LBV), representing phylogroups I and II,...

Data from: Genetic structuring among colonies of a pantropical seabird: Implication for subspecies validation and conservation

Laurence Humeau, Matthieu Le Corre, S. Reynolds, Colin Wearn, Janos C. Hennicke, James Russell, Yann Gomard, Hélène Magalon, Patrick Pinet, Pauline Gélin, François-Xavier Couzi, Etienne Bemanaja, Vikash Tatayah, Bacar Ousseni, Gérard Rocamora, Patrick Talbot, Nirmal Shah, Leandro Bugoni, Denis Da Silva & Audrey Jaeger
Appendix S1 Table S1 Details of field researchers and licences under which they took blood samples from white-tailed tropicbirds from populations in the years of study Table S2 Morphometrics of 616 individual white-tailed tropicbirds from 11 populations. Population codes are as described in Table 1. Table S3 Raw microsatellite genotypes for 382 individual White-tailed tropicbird from 13 populations. Population codes are as described in Table 1 Table S4 Details of mtDNA sequences Table S5 Tests...

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  • University of La Réunion
  • Centre de Coopération Internationale en Recherche Agronomique pour le Développement
  • University of Reunion Island
  • Institut de Recherche pour le Développement
  • University of La Laguna
  • National Museum of Natural History
  • University of Hohenheim
  • University of Pretoria
  • Atomic Energy and Alternative Energies Commission
  • Field Museum of Natural History