72 Works

Phase-Based Antarctica Ice Velocity Map

Jeremie Mouginot, Eric Rignot & Bernd Scheuchl
Complete map of ice motion in Antarctica combining phase data in the interior and speckle tracking in the fast-moving sectors. We present a new map of Antarctic ice velocity that is ten times more precise than prior maps and reveals ice motion at a high precision over 80% of the continent versus 20% in the past. The ice motion vector map provides novel constrains on interior ice motion and its connection with the glaciers and...

The two oxpecker species reveal the role of movement rates and foraging intensity in species coexistence

Guillaume PERON, Christophe Bonenfant, Roxanne Gagnon & Cheryl Mabika
The two Buphagus oxpecker species are specialized passerines that forage for ticks and other food particles on the body of ungulates in the African savannas. One of their intriguing features is their ability to coexist despite sharing the same, specialized diet. Using co-occurrence data (photographs of giraffes with oxpeckers on them) and Approximate Bayesian Computing, we demonstrate that yellow-billed oxpeckers changed host faster than red-billed oxpeckers and appeared to displace red-billed oxpeckers from preferred giraffe...

Data from: How neighbourhood interactions control the temporal stability and resilience to drought of trees in mountain forests

Marion Jourdan, Georges Kunstler & Xavier Morin
1. Over the coming decades, the predicted increase in frequency and intensity of extreme events such as droughts is likely to have a strong effect on forest functioning. Recent studies have shown that species mixing may buffer the temporal variability of productivity. However, most studies have focused on temporal stability of productivity, while species mixing may also affect forest resilience to extreme events. Our understanding of mechanisms underlying species mixing effects on forest stability and...

Data from: Water availability and temperature induce changes in oxidative status during pregnancy in a viviparous lizard

Andréaz Dupoué, Pauline Blaimont, David Rozen-Rechels, Murielle Richard, Sandrine Meylan, Jean Clobert, Donald Miles, Rémi Martin, Beatriz Decencière, Simon Agostini & Jean-François Le Galliard
Reproduction involves considerable reorganization in an organism’s physiology that incurs potential toxicity for cells (e.g., oxidative stress) and decrease in fitness. This framework has been the cornerstone of the so-called ‘oxidative cost of reproduction’, a theory that remains controversial and relatively overlooked in non-model ectotherms. Here, we used two complementary approaches in natural and controlled conditions to test whether altered access to climate conditions (water and temperature resources) alters oxidative status and mediates reproductive trade-offs...

Cocoa agroforest multifunctionality and soil fertility explained by shade tree litter traits

Marie Sauvadet, Stéphane Saj, Grégoire Freschet, Jean-Daniel Essobo, Séguy Enock, Thierry Becquer, Philippe Tixier & Jean-Michel Harmand
Manipulating plant functional diversity to improve agroecosystem multifunctionality is a central challenge of agricultural systems worldwide. In cocoa agroforestry systems (cAFS), shade trees are used to supply many services to farmers, yet their impact on soil functioning and cocoa yields is likely to vary substantially among tree species. Here, we compared the impact of five shade tree species (Canarium schweinfurthii (Canarium), Dacryoides edulis (Safou), Milicia excelsa (Iroko), Ceiba pentandra (Kapok tree), Albizia adianthifolia (Albizia)) and...

Data from: Na+/K+‐ATPase gene duplications in clitellate annelids are associated with freshwater colonization

Kevin M. Horn, Bronwyn W. Williams, Christer Erséus, Kenneth M. Halanych, Scott R. Santos, Michel Des Châtelliers Creuzé & Frank E. Anderson
Major habitat transitions, such as those from marine to freshwater habitats or from aquatic to terrestrial habitats, have occurred infrequently in animal evolution and may represent a barrier to diversification. Identifying genomic events associated with these transitions can help us better understand mechanisms that allow animals to cross these barriers and diversify in new habitats. Study of the Capitella telata and Helobdella robusta genomes allows examination of one such habitat transition (marine to freshwater) in...

Data from: Redescription of Arganasaurus (Metoposaurus) azerouali (Dutuit) comb. nov. from the Late Triassic of the Argana Basin (Morocco), and the first phylogenetic analysis of the Metoposauridae (Amphibia, Temnospondyli)

Valentin Buffa, Nour-Eddine Jalil & J. Sébastien Steyer
A systematic revision of the temnospondyl ‘Metoposaurus’ azerouali Dutuit from the Late Triassic of the Argana Basin (Western High Atlas, Morocco) is presented. The type material is redescribed in detail, and a preliminary phylogenetic analysis – the first one dealing with all metoposaurid species – is also conducted in order to test its position within the Metoposauridae. Our analysis places ‘Metoposaurus’ azerouali as sister‐taxon to Arganasaurus lyazidi in a robust clade supported by two unambiguous...

Data from: One-locus-several-primers: a strategy to improve the taxonomic and haplotypic coverage in diet metabarcoding studies

Emmanuel Corse, Christelle Tougard, Gaït Archambaud-Suard, Jean-François Agnèse, Françoise D. Messu Mandeng, Charles F. Bilong Bilong, David Duneau, Lucie Zinger, Rémi Chappaz, Charles C. Y. Xu, Emese Meglécz & Vincent Dubut
In diet metabarcoding analyses, insufficient taxonomic coverage of PCR primer sets generates false negatives that may dramatically distort biodiversity estimates. In this paper, we investigated the taxonomic coverage and complementarity of three cytochrome c oxidase subunit I gene (COI) primer sets based on in silico analyses and we conducted an in vivo evaluation using fecal and spider web samples from different invertivores, environments, and geographic locations. Our results underline the lack of predictability of both...

Data from: Male vocalizations convey information on kinship and inbreeding in a Lekking bird

Clément Cornec, Alexandre Robert, Fanny Rybak & Yves Hingrat
Kinship and inbreeding are two major components involved in sexual selection and mating system evolution. However, the mechanisms underlying recognition and discrimination of genetically related or inbred individuals remain unclear. We investigated whether kinship and inbreeding information is related to low frequency vocalizations, “booms”, produced by males during their courtship in the lekking houbara bustard (Chlamydotis undulata undulata). Based on a captive breeding programme where the pedigree of all males is known, we investigated the...

Data from: Gene copy number variations as signatures of adaptive evolution in the parthenogenetic, plant-parasitic nematode Meloidogyne incognita

Philippe Castagnone-Sereno, Karine Mulet, Etienne G. J. Danchin, Georgios D. Koutsovoulos, Mégane Karaulic, Martine Da Rocha, Marc Bailly-Bechet, Loris Pratx, Laetitia Perfus-Barbeoch & Pierre Abad
Adaptation to changing environmental conditions represents a challenge to parthenogenetic organisms and until now, how phenotypic variants are generated in clones in response to the selection pressure of their environment remains poorly known. The obligatory parthenogenetic root-knot nematode species Meloidogyne incognita has a worldwide distribution and is the most devastating plant-parasitic nematode. Despite its asexual reproduction, this species exhibits an unexpected capacity of adaptation to environmental constraints, e.g., resistant hosts. Here we used a genome-wide...

Data from: Postglacial colonization routes coincide with a life history breakpoint along a latitudinal gradient

Emilien Luquet, Patrik Rödin-Mörch, Maria Cortazar-Chinarro, Yvonne Meyer-Lucht, Jacob Höglund & Anssi Laurila
While adaptive divergence along environmental gradients has repeatedly been demonstrated, the role of postglacial colonization routes in determining phenotypic variation along gradients has received little attention. Here we used a hierarchical QST-FST approach to separate the roles of adaptive and neutral processes in shaping phenotypic variation in moor frog (Rana arvalis) larval life-histories along a 1700 km latitudinal gradient across northern Europe. This species has colonized Scandinavia via two routes with a contact zone in...

Data from: Biotic and abiotic drivers of species loss rate in isolated lakes

Céline Bellard, Göran Englund & Bernard Hugueny
1. Today, anthropogenic impacts are causing a serious crisis for global biodiversity, with rates of extinction increasing at an unprecedented rate. Extinctions typically occur after a certain delay and understanding the mechanisms causing delays is a key challenge for both fundamental and applied perspectives. 2. Here, we make use of natural experiments, the isolation of lakes by land up-lift in Northern Scandinavia, to examine how yearly extinction rates are affected by time since isolation and...

Data from: The geographical variation of network structure is scale dependent: understanding the biotic specialization of host-parasitoid networks

Nuria Galiana, Bradford A. Hawkins & Jose M. Montoya
Research on the structure of ecological networks suggests that a number of universal patterns exist. Historically, biotic specialization has been thought to increase towards the Equator. Yet, recent studies have challenged this view showing non-conclusive results. Most studies analysing the geographical variation in biotic specialization focus, however, only on the local scale. Little is known about how the geographical variation of network structure depends on the spatial scale of observation (i.e., from local to regional...

Data from: A functional diversity approach of crop sequences reveals that weed diversity and abundance show different responses to environmental variability

Lucie Mahaut, Sabrina Gaba & Guillaume Fried
1. Combining several crop species and associated agricultural practices in a crop sequence has the potential to control weed abundance while promoting weed diversity in arable fields. However, how the variability of environmental conditions that arise from crop sequences affects weed diversity and abundance remains poorly understood, with most studies to-date simply opposing weed communities in monoculture and in crop rotation. Here, we describe crop sequences along gradients of disturbance and resource variability using a...

Data from: Female reproduction bears no survival cost in captivity for grey mouse lemurs

Julie Landes, Pierre-Yves Henry, Isablle Hardy, Martine Perret & Samuel Pavard
The survival cost of reproduction has been revealed in many free-ranging vertebrates. However, recent studies on captive populations failed to detect this cost. Theoretically, this lack of survival/reproduction trade-off is expected when resources are not limiting, but these studies may have failed to detect the cost, as they may not have fully accounted for potential confounding effects, in particular inter-individual heterogeneity. Here we investigated the effects of current and past reproductive effort on later survival...

Data from: Some like it dry: water restriction overrides heterogametic sex determination in two reptiles

Andréaz Dupoué, Olivier Lourdais, Sandrine Meylan, François Brischoux, Frédéric Angelier, David Rozen-Rechels, Yoan Marcangeli, Beatriz Decencière, Simon Agostini & Jean-Francois Le Galliard
The evolution of sex determination is complex and yet crucial in our understanding of population stability. In ectotherms, sex determination involves a variety of mechanisms including genetic determination (GSD), environment determination (ESD), but also interactions between the two via sex reversal. In this study, we investigated whether water deprivation during pregnancy could override GSD in two heterogametic squamate reptiles. We demonstrated that water restriction in early gestation induced a male-biased secondary sex ratio in both...

Data from: Resting metabolic rate in migratory and non-migratory geese following range expansion; go south, go low

Götz Eichhorn, Manfred R. Enstipp, Jean-Yves Georges, Dennis Hasselquist & Bart A. Nolet
While many species suffer from human activities, some like geese benefit and may show range expansions. In some cases geese (partially) gave up migration and started breeding at wintering and stopover grounds. Range expansion may be facilitated and accompanied by physiological changes, especially when associated with changes in migratory behaviour. Interspecific comparisons found that migratory tendency is associated with a higher basal or resting metabolic rate (RMR). We compared RMR of individuals belonging to a...

Data from: Evidence for arrested succession in a liana‐infested Amazonian forest

Blaise Tymen, Maxime Réjou-Méchain, James W. Dalling, Sophie Fauset, Ted R. Feldausch, Natalia Norden, Oliver L. Phillips, Benjamin L. Turner, Jérôme Viers & Jérôme Chave
1. Empirical evidence and modelling both suggest that global changes may lead to an increased dominance of lianas, and thus to an increased prevalence of liana-infested forest formations in tropical forests. The implications for tropical forest structure and the carbon cycle remain poorly understood. 2. We studied the ecological processes underpinning the structure and dynamics of a liana-infested forest in French Guiana, using a combination of long-term surveys (tree, liana, seedling and litterfall), soil chemical...

Data from: Correlations between broad-scale taxonomic and genetic differentiations suggest a dominant imprint of historical processes on beta diversities

Marine Robuchon, Boris Leroy, Céline Jézéquel & Bernard Hugueny
Aim: Dispersal limitation, environmental selection and drift are known to influence both taxonomic similarity between communities and genetic similarity between populations. However, disentangling the relative roles of these processes on spatial patterns of differentiation - whether regarding taxonomic differentiation between communities or genetic differentiation between populations - is challenging. Investigating whether spatial patterns of taxonomic differentiation and genetic differentiation are correlated (β-SGDCs) is a promising approach to address this issue. Here, we investigated β-SGDCs over...

Data from: Why has transparency evolved in aposematic butterflies? insights from the largest radiation of aposematic butterflies, the Ithomiini

Melanie McClure, Corentin Clerc, Charlotte Desbois, Aimilia Meichanetzoglou, Marion Cau, Lucie Bastin-Héline, Javier Bacigalupo, Céline Houssin, Charline Pinna, Bastien Nay, Violaine Llaurens, Serge Berthier, Christine Andraud, Doris Gomez & Marianne Elias
Defended species are often conspicuous and this is thought to be an honest signal of defences, i.e. more toxic prey are more conspicuous. Neotropical butterflies of the large Ithomiini tribe numerically dominate communities of chemically-defended butterflies and may thus drive the evolution of mimetic warning patterns. Although many species are brightly coloured, most are transparent to some degree. The evolution of transparency from a warningly coloured ancestor is puzzling as it is generally assumed to...

Data from: Out of the Mediterranean? post-glacial colonisation pathways varied among cold-water coral species

Joana Boavida, Ronan Becheler, Marvin Choquet, Norbert Frank, Marco Taviani, Jean-Francois Bourillet, Anne-Leila Meistertzheim, Anthony Grehan, Alessandra Savini & Sophie Arnaud-Haond
Aim. To infer cold-water corals' post-glacial phylogeography and assess the role of Mediterranean Sea glacial refugia as origins for the recolonisation of the northeastern Atlantic Ocean. Location. Northeastern Atlantic Ocean and Mediterranean Sea. Taxon. Lophelia pertusa, Madrepora oculata. Methods. We sampled cold-water corals using remotely operated vehicles and one sediment core for coral and sediment dating. We characterized spatial genetic patterns (microsatellites and a nuclear gene fragment) using networks, clustering and measures of genetic differentiation....

Data from: Natural Wolbachia infections are common in the major malaria vectors in Central Africa

Diego Ayala, Ousman Akone-Ella, Nil Rahola, Pierre Kengne, Marc F. Ngangue, Fabrice Mezeme, Boris K. Makanga, Martha Nigg, Carlo Costantini, Frederic Simard, Franck Prugnolle, Benjamin Roche, Olivier Duron & Christophe Paupy
During the last decade, the endosymbiont bacterium Wolbachia has emerged as a biological tool for vector disease control. However, for long time, it was believed that Wolbachia was absent in natural populations of Anopheles. The recent discovery that species within the Anopheles gambiae complex host Wolbachia in natural conditions has opened new opportunities for malaria control research in Africa. Here, we investigated the prevalence and diversity of Wolbachia infection in 25 African Anopheles species in...

Data from: The theory of island biogeography and soundscapes: species diversity and the organization of acoustic communities

Aloïs Robert, Thierry Lengagne, Martim Melo, Vanessa Gardette, Sacha Julien, Rita Covas, Doris Gomez & Claire Doutrelant
Aim: On islands, species richness is reduced and interspecific competition relaxed in relation to the mainland, allowing species to use broader ecological niches. These factors are known to affect diet and morphology, but can also affect communication and acoustic signaling in particular. However, no study has ever compared insular and continental soundscapes to determine to which extent islands present reduced acoustic richness (number of co-vocalizing species) and fewer constraints for vocalizing species. Location: São Tomé...

Data from: Where and What? Frugivory is associated with more efficient foraging in three semi-free ranging primate species

Cinzia Trapanese, Benjamin Robira, Giordana Tonachella, Silvia Di Gristina, Hélène Meunier & Shelly Masi
Foraging in seasonal environments can be cognitively challenging. Comparative studies have associated brain size with a frugivorous diet. We investigated how fruit distribution (where) and preference (what) affect foraging decisions in three semi-free ranging primate species with different degrees of frugivory: Macaca tonkeana (Nindiv=5; Ntrials=430), M. fascicularis (Nindiv=3; Ntrials=168) and Sapajus apella (Nindiv=6; Ntrials=288). We used 36 boxes fixed on trees and filled with highly and less preferred fruits with different (weekly) spatio-temporal distributions. Individuals...

Data from: Assessing the effects of quantitative host resistance on the life-history traits of sporulating parasites with growing lesions

Melen Leclerc, Julie Clément, Didier Andrivon & Frédéric Hamelin
Assessing life-history traits of parasites on resistant hosts is crucial in evolutionary ecology. In the particular case of sporulating pathogens with growing lesions, phenotyping is difficult because one needs to disentangle properly pathogen spread from sporulation. By considering Phytophthora infestans on potato, we use mathematical modelling to tackle this issue and refine the assessment pathogen response to quantitative host resistance. We elaborate a parsimonious leaf-scale model by convolving a lesion growth model and a sporulation...

Registration Year

  • 2019
    72

Resource Types

  • Dataset
    72

Affiliations

  • French National Centre for Scientific Research
    72
  • PSL Research University
    3
  • Laboratory Evolution and Biological Diversity
    3
  • University of Montpellier
    3
  • Estación Biológica de Doñana
    2
  • Centre d'Etudes Biologiques de Chizé
    2
  • Lund University
    2
  • Institut de Systématique, Évolution, Biodiversité
    2
  • Institut de Recherche pour le Développement
    2
  • University of Gothenburg
    2