Data from: Some like it dry: water restriction overrides heterogametic sex determination in two reptilesAndréaz 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...
1. Most ectotherms follow the temperature-size rule (TSR): in cold environments individuals grow slowly but reach a large asymptotic length. Intraspecific competition can induce plastic changes of growth rate and asymptotic length and competition may itself be modulated by temperature. 2. Our aim is to disentangle the joint effects of temperature and intraspecific competition on growth rate and asymptotic length. 3. We used two distinct clonal lineages of the Collembola Folsomia candida, to describe thermal...
Data from: Developmental constraints and resource environment shape early emergence and investment in spines in saplingsMohammed Armani, Tristan Charles-Dominique, Kasey E. Barton & Kyle W. Tomlinson
Abstract Background and Aims Herbivory by large mammals imposes a critical recruitment bottleneck on plants in many systems. Spines defend plants against large herbivores and how early they emerge in saplings may be one of the strongest predictors of sapling survival in herbivore-rich environments. Yet little effort has been directed at understanding the variability in spine emergence across saplings. Methods We present a multi-species study examining whether and how sapling size,spine type and species’ environmental...
Data from: Assessing species richness trends: declines of bees and bumblebees in the Netherlands since 1945.Tom Van Dooren
Estimating and predicting temporal trends in species richness is of general importance, but notably difficult because detection probabilities of species are imperfect and many datasets were collected in an opportunistic manner. We need to improve our capabilities to assess richness trends using datasets collected in unstandardized procedures with potential collection bias. Two methods are proposed and applied to estimate richness change, which both incorporate models for sampling effects and detection probability: (1) non-linear species accumulation...
Data from: Does divergent selection predict the evolution of mate preference and reproductive isolation in the tropical butterfly genus Melinaea (Nymphalidae: Ithomiini)?Melanie McClure, Louiza Mahrouche, Céline Houssin, Monica Monllor, Yann Le Poul, Brigitte Frérot, Alexandra Furtos & Marianne Elias
Many studies have shown that speciation can be facilitated when a trait under divergent selection also causes assortative mating. In Müllerian mimetic butterflies, a change in wing colour pattern can cause reproductive isolation. However, colour pattern divergence does not always lead to reproductive isolation. Understanding how divergent selection affects speciation requires identifying the mechanisms that promote mate preference and/or choosiness. This study addresses whether shifts in wing colour pattern drives mate preference and reproductive isolation...
Institute of Ecology and Environmental Sciences Paris5
Institut de Systématique, Évolution, Biodiversité1
University of Hawaii at Manoa1
University of Oslo1
French National Centre for Scientific Research1
Xishuangbanna Tropical Botanical Garden1
Institut de Biologie de l'École Normale Supérieure1
Cereep Ecotron Île-de-France1