Pollinator sharing between close relatives can be costly, which can promote pollination niche partitioning and floral divergence. This should be reflected by a higher species divergence in sympatry than in allopatry. We tested this hypothesis in two orchid congeners with overlapping distributions and flowering times. We characterized floral traits and pollination niches and quantified pollen limitation in 15 pure and mixed populations, and we measured phenotypic selection on floral traits and performed controlled crosses in...
Nests are essential constructions that directly determine fitness, yet their structure can vary substantially across bird species. While there is evidence supporting a link between nest architecture and the habitat a species occupies, we still ignore what ecological and evolutionary processes are linked to different nest types. Using information on 3175 species of songbirds, we show that – after controlling for latitude and body size – species that build domed nests (i.e., nests with a...
MALDI-TOF MS spectra and sequence data of collagen of modern and archaeological flatfish from European watersKatrien Dierickx, Samantha Presslee, Richard Hagan, Tarek Oueslati, Jennifer Harland, Jessica Hendy, David Orton, Michelle Alexander & Virginia Harvey
MALDI-TOF MS spectra, LC-MS/MS datafiles, and Mascot MZID files of modern bone collagen of 18 species of Pleuronectiformes as reference spectra that were used to develop peptide biomarkers for ZooMS (Zooarchaeology by Mass Spectrometry). Details on the samples used can be found in the file "Reference spectra information.csv". Further information on the method and results can be found in the manuscript. The file names contain the type of data file and the species name. MALDI-TOF...
Anthropogenic changes drive shifts in species’ geographic distributions and increase the occurrence of leading or trailing-edge marginal populations. Theoretical predictions and empirical observations indicate substantial changes in life-history traits in marginal populations, often involving dispersal and reproductive abilities. Using a common garden experiment, we studied the variation of life-history traits of populations sampled on spatial gradients extending from range-core to range-edge habitats for three expanding (miner’s lettuce Claytonia perfoliata, Danish scurvygrass Cochlearia danica, and rock...
Searching for genetic evidence of demographic decline in an arctic seabird: beware of overlapping generationsEmeline Charbonnel, Claire Daguin, Lucille Caradec, Eléonore Moittié, Olivier Gilg, Maria Gavrilo, Hallvard Strom, Mark L Mallory, Grant Gilchrist, R. I. Guy Morrisson, Raphael Leblois, Camille Roux, Jonathan M Yearsley, Glenn Yannic & Thomas Broquet
Genetic data are useful for detecting sudden population declines in species that are difficult to study in the field. Yet this indirect approach has its own drawbacks, including population structure, mutation patterns, and generation overlap. The ivory gull (Pagophila eburnea), a long-lived Arctic seabird, is currently suffering from rapid alteration of its primary habitat (i.e., sea ice), and dramatic climatic events affecting reproduction and recruitment. However, ivory gulls live in remote areas, and it is...
Progress in understanding middle Eocene nassellarian (Radiolaria, Polycystinea) diversity; new insights from the western equatorial Atlantic OceanMathias Meunier & Taniel Danelian
Middle Eocene deep-sea sediment sequences cored at Ocean Drilling Program Site 1260 (Leg 207; equatorial Atlantic Ocean), yielded diverse and abundant radiolarian faunas which are conducive to biostratigraphic and palaeoceanographic researchs, as well as to the study of radiolarian diversity dynamics during this epoch of dramatic climate changes. However, many species present in these sediments still have not been formally described and are therefore neglected in most biodiversity surveys. In an effort to improve the...
Revisiting the number of self‐incompatibility alleles in finite populations: From old models to new resultsPeter Czuppon & Sylvain Billiard
Under gametophytic self-incompatibility (GSI), plants are heterozygous at the self-incompatibility locus (S-locus) and can only be fertilized by pollen with a different allele at that locus. The last century has seen a heated debate about the correct way of modeling the allele diversity in a GSI population that was never formally resolved. Starting from an individual-based model, we derive the deterministic dynamics as proposed by Fisher (1958), and compute the stationary S-allele frequency distribution. We...
University of Lille7
Universidade Federal do Pampa1
National Research Institute for Agriculture, Food and Environment1
University of Münster1
Australian National University1
University of Melbourne1
French National Centre for Scientific Research1
University of the Highlands and Islands1
Norwegian Polar Institute1