Data from: Test of biotic and abiotic correlates of latitudinal variation in defences in the perennial herb Ruellia nudifloraLuis Abdala-Roberts, Xoaquín Moreira, Sergio Rasmann, Victor Parra-Tabla & Kailen A. Mooney
1. Geographic variation in abiotic factors and species interactions is widespread and is hypothesized to generate concomitant patterns of species trait variation. For example, higher rates of herbivory at lower latitudes are thought to select for increased plant defences, although latitudinal variation in defences may also be influenced directly by abiotic factors and indirectly by predators and parasitoids reducing herbivore pressure. 2. We measured defences of the herb Ruellia nudiflora among 30 populations spanning a...
Horismenus parasitoids are an abundant and understudied group of eulophid wasps found mainly in the New World. Recent surveys based on morphological analyses in Costa Rica have quadrupled the number of named taxa, with more than 400 species described so far. This recent revision suggests that there is still a vast number of unknown species to be identified. As Horismenus wasps have been widely described as parasitoids of insect pests associated with crop plants, it...
Despite a large body of knowledge about the evolution of life histories, we know little about how variable food availability during an individual's development affects its life history. We measured the effects of manipulating food levels during early and late larval development of the mosquito Aedes aegypti on its growth rate, life history and reproductive success. Switching from low to high food led to compensatory growth: individuals grew more rapidly during late larval development and...
Data from: Very high resolution digital elevation models: are multi-scale derived variables ecologically relevant?Kevin Leempoel, Christian Parisod, Céline Geiser, Lucas Daprà, Pascal Vittoz & Stéphane Joost
Digital Elevation Models (DEMs) are often used in landscape ecology to retrieve elevation or first derivative terrain attributes such as slope or aspect in the context of species distribution modelling. However, DEM-derived variables are scale-dependent and, given the increasing availability of very high resolution (VHR) DEMs, their ecological relevance must be assessed for different spatial resolutions. In a study area located in the Swiss Western Alps, we computed VHR DEMs-derived variables related to morphometry, hydrology...
Data from: Genome reorganization in F1 hybrids uncovers the role of retrotransposons in reproductive isolationNatacha Senerchia, Felber François & Christian Parisod
Interspecific hybridization leads to new interactions among divergent genomes, revealing the nature of genetic incompatibilities having accumulated during and after the origin of species. Conflicts associated with misregulation of transposable elements (TEs) in hybrids expectedly result in their activation and genome-wide changes that may be key to species boundaries. Repetitive genomes of wild wheats have diverged under differential dynamics of specific long terminal repeat retrotransposons (LTR-RTs), offering unparalleled opportunities to address the underpinnings of plant...
Data from: Differential introgression and reorganization of retrotransposons in hybrid zones between wild wheatsNatacha Senerchia, François Felber, Béatrice North, Anouk Sarr, Roberto Guadagnuolo & Christian Parisod
The maintenance of species integrity despite pervasive hybridization is ruled by the interplay between reproductive barriers. Endogenous postzygotic isolation will shape the patterns of introgression in hybrid zones, leading to variable outcomes depending on the genetic mechanism involved. Here, we analysed experimental and natural hybrid populations of Aegilops geniculata and Aegilops triuncialis to examine the genetics of species boundaries in the face of gene flow. Because long-terminal repeat retrotransposons (LTR-RTs) showing differential evolutionary trajectories are...
Data from: The importance (or lack thereof) of niche divergence to the maintenance of a northern species complex: the case of the long-toed salamander (Ambystoma macrodactylum Baird)Julie Lee-Yaw, Darren Irwin, J. A. Lee-Yaw & D. E. Irwin
The relative importance of ecological versus non-ecological factors for the origin and maintenance of species is an open question in evolutionary biology. Young lineages—such as the distinct genetic groups that make up the ranges of many northern species—represent an opportunity to study the importance of ecological divergence during the early stages of diversification. Yet, few studies have examined the extent of niche divergence between lineages in previously glaciated regions and the role of ecology in...
Herbivore-induced volatiles are widespread in plants. They can serve as alert signals that enable neighbouring leaves and plants to pre-emptively increase defences and avoid herbivory damage. However, our understanding of the factors mediating volatile organic compound (VOC) signal interpretation by receiver plants and the degree to which multiple herbivores affect VOC signals is still limited. Here we investigated whether plant responses to damage-induced VOC signals were population specific. As a secondary goal, we tested for...
Data from: Functional responses of multi-taxa communities to disturbance and stress gradients in a restored floodplainBertrand Fournier, François Gillet, Renée-Claire Le Bayon, Edward A. D. Mitchell & Marco Moretti
1. Trait-based approaches can reveal the mechanisms through which disturbances or stress impact communities, allowing comparisons of the role of different mechanisms in shaping communities among taxonomic groups. Such information can lead to higher comparability, transferability and predictability of the outcome of restoration projects. However, multitaxa trait-based approaches were rarely used in the context of ecosystem restoration. 2. We investigated the responses to environmental gradients of seven taxa (vascular plants, staphylinid and carabid beetles, spiders,...
University of Neuchâtel9
University of Lausanne2
Spanish National Research Council1
École Polytechnique Fédérale de Lausanne1
Autonomous University of Yucatán1
Natural History Museum1
University of British Columbia1
Swiss Federal Institute for Forest, Snow and Landscape Research1
University of California, Irvine1