68 Works

Data from: Iterative ecological radiation and convergence during the evolutionary history of damselfishes (Pomacentridae)

Bruno Frédérich, Laurie Sorenson, Francesco Santini, Graham J. Slater & Michael E. Alfaro
Coral reef fishes represent one of the most spectacularly diverse assemblages of vertebrates on the planet, but our understanding of their mode of diversification remains limited. Here we test whether the diversity of the damselfishes (Pomacentridae), one of the most species-rich families of reef-associated fishes, was produced by a single or multiple adaptive radiation(s) during their evolutionary history. Tests of the tempo of lineage diversification using a time-calibrated phylogeny including 208 species revealed that crown...

Data from: GLO-Roots: an imaging platform enabling multidimensional characterization of soil-grown roots systems

Ruben Rellán-Álvarez, Guillaume Lobet, Heike Lindner, Pierre-Luc Pradier, Jose Sebastian, Muh-Ching Yee, Yu Geng, Charlotte Trontin, Therese LaRue, Amanda Schrager-Lavelle, Cara H. Haney, Rita Nieu, Julin Maloof, John P. Vogel & José R. Dinneny
Root systems develop different root types that individually sense cues from their local environment and integrate this information with systemic signals. This complex multi-dimensional amalgam of inputs enables continuous adjustment of root growth rates, direction and metabolic activity that define a dynamic physical network. Current methods for analyzing root biology balance physiological relevance with imaging capability. To bridge this divide, we developed an integrated imaging system called Growth and Luminescence Observatory for Roots (GLO-Roots) that...

Data from: Closing a gap in tropical forest biomass estimation: taking crown mass variation into account in pantropical allometries

Pierre Ploton, Nicholas Barbier, Stéphane Takoudjou Momo, Maxime Réjou-Méchain, Faustin Boyemba Bosela, Georges Chuyong, Gilles Dauby, Vincent Droissart, Adeline Fayolle, Rosa Calisto Goodman, Mathieu Henry, Narcisse Guy Kamdem, John Katembo Mukirania, David Kenfack, Moses Libalah, Alfred Ngomanda, Vivien Rossi, Bonaventure Sonké, Nicolas Texier, Duncan Thomas, Donatien Zebaze, Pierre Couteron, Uta Berger & Raphaël Pélissier
Accurately monitoring tropical forest carbon stocks is an outstanding challenge. Allometric models that consider tree diameter, height and wood density as predictors are currently used in most tropical forest carbon studies. In particular, a pantropical biomass model has been widely used for approximately a decade, and its most recent version will certainly constitute a reference in the coming years. However, this reference model shows a systematic bias for the largest trees. Because large trees are...

Data from: The determinants of tropical forest deciduousness: disentangling the effects of rainfall and geology in central Africa

Dakis-Yaoba Ouédraogo, Adeline Fayolle, Sylvie Gourlet-Fleury, Frédéric Mortier, Vincent Freycon, Nicolas Fauvet, Suzanne Rabaud, Guillaume Cornu, Fabrice Bénédet, Jean-François Gillet, Richard Oslisly, Jean-Louis Doucet, Philippe Lejeune & Charly Favier
Understanding the environmental determinants of forests deciduousness i.e. proportion of deciduous trees in a forest stand, is of great importance when predicting the impact of ongoing global climate change on forests. In this study, we examine (i) how forest deciduousness varies in relation to rainfall and geology, and (ii) whether the influence of geology on deciduousness could be related to differences in soil fertility and water content between geological substrates. The study was conducted in...

Data from: Extensive seed and pollen dispersal and assortative mating in the rain forest tree Entandrophragma cylindricum (Meliaceae) inferred from indirect and direct analyses

Franck Kameni Monthe, Olivier J. Hardy, Jean-Louis Doucet, Judy Loo, Jérôme Duminil & Jean-Louis Doucet
Pollen and seed dispersal are key processes affecting the demographic and evolutionary dynamics of plant species and are also important considerations for the sustainable management of timber trees. Through direct and indirect genetic analyses, we studied the mating system and the extent of pollen and seed dispersal in an economically important timber species, Entandrophragma cylindricum (Meliaceae). We genotyped adult trees, seeds and saplings from a 400-ha study plot in a natural forest from East Cameroon...

Data from: Maternal obesity increases insulin resistance, low-grade inflammation and osteochondrosis lesions in foals and yearlings until 18 months of age

Morgane Robles, Emilie Nouveau, Camille Gautier, Luis Mendoza, Cédric Dubois, Michèle Dahirel, Bénédicte Lagofun, Marie-Christine Aubrière, Jean-Philippe Lejeune, Isabelle Caudron, Isabelle Guenon, Catherine Viguié, Laurence Wimel, Hélène Bouraima-Lelong, Didier Serteyn, Anne Couturier-Tarrade, Pascale Chavatte-Palmer, M-C Aubrière & J-P Lejeune
Obesity is a growing concern in horses. The effects of maternal obesity on maternal metabolism and low-grade inflammation during pregnancy, as well as offspring growth, metabolism, low-grade inflammation, testicular maturation and osteochondrotic lesions until 18 months of age were investigated. Twenty-four mares were used and separated into two groups at insemination according to body condition score (BCS): Normal (N, n=10, BCS ≤4) and Obese (O, n=14, BCS ≥4.25). BCS and plasma glucose, insulin, triglyceride, urea,...

Data from: The evolutionary history of polycotylid plesiosaurians

Valentin Fischer, Roger B J Benson, Patrick S Druckenmiller, Hilary F Ketchum & Nathalie Bardet
Polycotylidae is a clade of plesiosaurians that appeared during the Early Cretaceous and became speciose and abundant early in the Late Cretaceous. However, this radiation is poorly understood. Thililua longicollis from the Middle Turonian of Morocco is an enigmatic taxon possessing an atypically long-neck and, as originally reported, a series of unusual cranial features that cause unstable phylogenetic relationships for polycotylids. We reinterpret the holotype specimen of Thililua longicollis and clarify its cranial anatomy. Thililua...

Data from: Performance of glomerular filtration rate estimation equations in Congolese healthy adults: inopportunity of ethnic correction

Justine B. Bukabau, Ernest K. Sumaili, Etienne Cavalier, Hans Pottel, Bejos Kifakiou, Aliocha Nkodila, Jean-Robert R Makulo, Vieux M. Mokoli, Chantal V. Zinga, Augustin L. Longo, Yannick M. Engole, Yannick M. Nlandu, François B. Lepira, Nazaire M. Nseka, Jean-Marie Krzesinski, Pierre Delanaye, Jean Robert R. Makulo & Jean Marie Krzesinski
Context and objective: In the estimation of glomerular filtration rate (GFR), ethnicity is an important determinant. However, all existing equations have been built solely from Caucasian and Afro-American populations and they are potentially inaccurate for estimating GFR in African populations. We therefore evaluated the performance of different estimated GFR (eGFR) equations in predicting measured GFR (mGFR). Methods: In a cross-sectional study, 93 healthy adults were randomly selected in the general population of Kinshasa, Democratic Republic...

Data from: Maternal nutrition during pregnancy affects testicular and bone development, glucose metabolism and response to overnutrition in weaned horses up to two years

Camille Gautier, Luis Mendoza, Hélène Bouraima-Lelong, Isabelle Guenon, Pauline Peugnet, Cédric Dubois, Sylvaine Camous, Anne Tarrade, Morgane Robles, Didier Serteyn, Isabelle Caudron, Jean-Philippe Lejeune, Laurence Wimel, Michèle Dahirel & Pascale Chavatte-Palmer
Pregnant mares and post-weaning foals are often fed concentrates rich in soluble carbohydrates, together with forage. Recent studies suggest that the use of concentrates is linked to alterations of metabolism and the development of osteochondrosis in foals. The aim of this study was to determine if broodmare diet during gestation affects metabolism, osteoarticular status and growth of yearlings overfed from 20 to 24 months of age and/or sexual maturity in prepubertal colts. Twenty-four saddlebred mares...

Data from: Teruelia diezii gen. et sp. nov.: an early polysporangiophyte from the Lower Devonian of the Iberian Peninsula

Borja Cascales-Miñana & Philippe Gerrienne
A new basal land plant, Teruelia diezii gen. et sp. nov., is described from the shallow-water marine deposits of the Lower Devonian (Lochkovian–Pragian) Nogueras Formation of the Iberian Peninsula (north Gondwana palaeocontinent). Teruelia is preserved as a compression fossil and consists of isotomously branched, robust stems terminated in large, fusiform, twisted sporangia. This morphology suggests that Teruelia is very probably equivalent to Aglaophyton, a permineralized early polysporangiophyte known up to now only from the Lower...

Data from: Non-reef environments impact the diversification of extant jacks, remoras and allies (Carangoidei, Percomorpha)

Bruno Frederich, Giuseppe Marramà, Giorgio Carnevale & Francesco Santini
Various factors may impact the processes of diversification of a clade. In the marine realm, it has been shown that coral reef environments have promoted diversification in various fish groups. With the exception of requiem sharks, all the groups showing a higher level of diversity in reefs than in non-reef habitats have diets based predominantly on plankton, algae or benthic invertebrates. Here we explore the pattern of diversification of carangoid fishes, a clade that includes...

Data from: Architectural differences associated to functional traits among 45 coexisting tree species in central Africa

Grace Jopaul Loubota Panzou, Gauthier Ligot, Sylvie Gourlet-Fleury, Jean-Louis Doucet, Eric Forni, Jean-Joël Loumeto & Adeline Fayolle
1. Architectural traits that determine the light captured in a given environment are an important aspect of the life-history strategies of tropical tree species. In this study, we examined how interspecific variation in architectural traits is related to the functional traits of 45 coexisting tree species in central Africa. 2. At the tree level, we measured tree diameter, total height and crown dimensions for an average of 30 trees per species (range 14–72, total 968...

Data from: The shepherds' tale: a genome-wide study across 9 dog breeds implicates two loci in the regulation of fructosamine serum concentration in Belgian shepherds

Simon K. G. Forsberg, Marcin Kierczak, Ingrid Ljungvall, Anne-Christine Merveille, Vassiliki Gouni, Maria Wiberg, Jakob Lundgren Willesen, Sofia Hanås, Anne-Sophie Lequarré, Louise Mejer Sørensen, Laurent Tiret, Kathleen McEntee, Eija Seppälä, Jørgen Koch, Géraldine Battaille, Hannes Lohi, Merete Fredholm, Valerie Chetboul, Jens Häggström, Örjan Carlborg, Kerstin Lindblad-Toh & Katja Höglund
Diabetes mellitus is a serious health problem in both dogs and humans. Certain dog breeds show high prevalence of the disease, whereas other breeds are at low risk. Fructosamine and glycated hemoglobin (HbA1c) are two major biomarkers of glycaemia where serum concentrations reflect glucose turnover over the past few weeks to months. In this study, we searched for genetic factors influencing variation in serum fructosamine concentration in healthy dogs using data from nine dog breeds....

Data from: Trait decoupling promotes evolutionary diversification of the trophic and acoustic system of damselfishes

Bruno Frédérich, Damien Olivier, Glenn Litsios, Michael E. Alfaro, Eric Parmentier & B. Frederich
Trait decoupling, wherein evolutionary release of constraints permits specialization of formerly integrated structures, represents a major conceptual framework for interpreting patterns of organismal diversity. However, few empirical tests of this hypothesis exist. A central prediction, that the tempo of morphological evolution and ecological diversification should increase following decoupling events, remains inadequately tested. In damselfishes (Pomacentridae), a ceratomandibular ligament links the hyoid bar and lower jaws, coupling two main morphofunctional units directly involved in both feeding...

Data from: Personality and gonadal development as sources of individual variation in response to GnRH challenge in female great tits

Samuel P. Caro, Charlotte A. Cornil, Kees Van Oers & Marcel E. Visser
Seasonal timing of reproduction is a key life-history trait, but we know little about the mechanisms underlying individual variation in female endocrine profiles associated with reproduction. In birds, 17β-estradiol is a key reproductive hormone that links brain neuroendocrine mechanisms, involved in information processing and decision making, to downstream mechanisms in the liver, where egg-yolk is produced. Here we test, using a simulated induction of the reproductive system through a GnRH-challenge, whether the ovary of pre-breeding...

Data from: Resolution of the ordinal phylogeny of mosses using targeted exons from organellar and nuclear genomes

Yang Liu, Matthew G. Johnson, Cymon J. Cox, Rafael Medina, Nicolas Devos, Alain Vanderpoorten, Lars Hedenäs, Neil E. Bell, James R. Shevock, Blanka Aguero, Dietmar Quandt, Norman J. Wickett, A. Jonathan Shaw & Bernard Goffinet
Mosses are a highly diverse lineage of land plants, whose diversification, spanning at least 400 million years, remains phylogenetically ambiguous due to the lack of fossils, massive early extinctions, late radiations, limited morphological variation, and conflicting signal among previously used markers. Here, we present phylogenetic reconstructions based on complete organellar exomes and a comparable set of nuclear genes for this major lineage of land plants. Our analysis of 142 species representing 29 of the 30...

Data from: A genome-wide data assessment of the African lion (Panthera leo) population genetic structure and diversity in Tanzania

Nathalie Smitz, Olivia Jouvenet, Fredrick Ambwene Ligate, William-George Crosmary, Dennis Ikanda, Philippe Chardonnet, Alessandro Fusari, Kenny Meganck, François Gillet, Mario Melletti & Johan R. Michaux
The African lion (Panthera leo), listed as a vulnerable species on the IUCN Red List of Threatened Species (Appendix II of CITES), is mainly impacted by indiscriminate killing and prey base depletion. Additionally, habitat loss by land degradation and conversion has led to the isolation of some subpopulations, potentially decreasing gene flow and increasing inbreeding depression risks. Genetic drift resulting from weakened connectivity between strongholds can affect the genetic health of the species. In the...

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