It has been suggested that individual behavioural traits influence the potential to successfully colonize new areas. Identifying the genetic basis of behavioural variation in invasive species thus represents an important step towards understanding the evolutionary potential of the invader. Here, we sequenced a candidate region for neophilic/neophobic and activity behaviour – the complete exon 3 of the DRD4 gene – in 100 Yellow-crowned bishops (Euplectes afer) from two invasive populations in Spain and Portugal. The...
Data from: Geographical variation in mutualistic networks: similarity, turnover and partner fidelityKristian Trøjelsgaard, Pedro Jordano, Daniel W. Carstensen, Jens M. Olesen & K. Trojelsgaard
Although species and their interactions in unison represent biodiversity and all the ecological and evolutionary processes associated with life, biotic interactions have, contrary to species, rarely been integrated into the concepts of spatial β-diversity. Here, we examine β-diversity of ecological networks by using pollination networks sampled across the Canary Islands. We show that adjacent and distant communities are more and less similar, respectively, in their composition of plants, pollinators and interactions than expected from random...
Data from: Low-quality birds do not display high-quality signals: the cysteine-pheomelanin mechanism of honestyIsmael Galván, Kazumasa Wakamatsu, Pablo R. Camarero, Rafael Mateo & Carlos Alonso-Alvarez
The mechanisms that make that the costs of producing high-quality signals are unaffordable to low-quality signalers are a current issue in animal communication. The size of the melanin-based bib of male house sparrows Passer domesticus honestly signals quality. We induced the development of new bibs while treating males with buthionine-sulfoximine (BSO), a substance that depletes the levels of the antioxidant glutathione and the amino acid cysteine, two elements that switch melanogenesis from eumelanin to pheomelanin....
Data from: Consequences of plant invasions on compartmentalization and species’ roles in plant–pollinator networksMatthias Albrecht, Benigno Padrón, Ignasi Bartomeus & Anna Traveset
Compartmentalization—the organization of ecological interaction networks into subsets of species that do not interact with other subsets (true compartments) or interact more frequently among themselves than with other species (modules)—has been identified as a key property for the functioning, stability and evolution of ecological communities. Invasions by entomophilous invasive plants may profoundly alter the way interaction networks are compartmentalized. We analysed a comprehensive dataset of 40 paired plant–pollinator networks (invaded versus uninvaded) to test this...
Incorporating interactions into a biogeographical framework may serve to understand how such interactions and the services they provide are distributed in space. We begin by simulating the spatiotemporal dynamics of realistic mutualistic networks inhabiting spatial networks of habitat patches. We proceed by comparing these predictions with the empirical results of a set of pollination networks in isolated hills of the Argentinian Pampas. We first find that one needs to sample up to five times as...
Gene flow is the main force opposing divergent selection, and its effects are greater in populations in close proximity. Thus, complete reproductive isolation between parapatric populations is not expected, particularly in the absence of ecological adaptation and sharp environmental differences. Here, we explore the biogeographical patterns of an endemic ant species, Cataglyphis floricola, for which two colour morphs (black and bicolour) coexist in parapatry throughout continuous sandy habitat in southern Spain. Discriminant analyses of six...
Data from: Long-term expansion of juniper populations in managed landscapes: patterns in space and timeCristina Garcia, Eva Moracho, Ricardo Díaz-Delgado & Pedro Jordano
1. Forest cover has increased world-wide over the last decade despite continuous forest fragmentation. However, a lack of long-term demographic data hinders our understanding of the spatial dynamics of colonization in remnant populations inhabiting recently protected areas or set-aside rural lands. 2. We investigated the population expansion of the Phoenician juniper (Juniperus phoenicea subsp. turbinata), which is an endozoochorous Mediterranean tree species inhabiting landscapes that have been managed for many centuries. By combining the photointerpretation...
Data from: Habitat-driven population structure of bottlenose dolphins, Tursiops truncatus, in the North-East AtlanticMarie Louis, Amélia Viricel, Tamara Lucas, Hélène Peltier, Eric Alfonsi, Simon Berrow, Andrew Brownlow, Pablo Covelo, Willy Dabin, Rob Deaville, Renaud De Stephanis, François Gally, Pauline Gauffier, Rod Penrose, Monica A. Silva, Christophe Guinet & Benoît Simon-Bouhet
Despite no obvious barrier to gene flow, historical environmental processes and ecological specializations can lead to genetic differentiation in highly mobile animals. Ecotypes emerged in several large mammal species as a result of niche specializations and/or social organization. In the North-West Atlantic, two distinct bottlenose dolphin (Tursiops truncatus) ecotypes (i.e. ‘coastal’ and ‘pelagic’) have been identified. Here, we investigated the genetic population structure of North-East Atlantic (NEA) bottlenose dolphins on a large scale through the...
Data from: Who dispersed the seeds? The use of DNA barcoding in frugivory and seed dispersal studiesJuan González-Varo, Juan M. Arroyo & Pedro Jordano
1. Assessing dispersal events in plants faces important challenges and limitations. A methodological issue that limits advances in our understanding of seed dissemination by frugivorous animals is identifying ‘which species dispersed the seeds’. This is essential for assessing how multiple frugivore species contribute distinctly to critical dispersal events such as seed delivery to safe sites, long-distance dispersal, and the colonization of non-occupied habitats. 2. Here we describe DNA barcoding protocols successfully applied to bird-dispersed seeds...
Data from: Variation in DNA methylation transmissibility, genetic heterogeneity and fecundity-related traits in natural populations of the perennial herb Helleborus foetidusCarlos M. Herrera, Mónica Medrano & Pilar Bazaga
Inferences about the role of epigenetics in plant ecology and evolution are mostly based on studies of cultivated or model plants conducted in artificial environments. Insights from natural populations, however, are essential to evaluate the possible consequences of epigenetic processes in biologically realistic scenarios with genetically and phenotypically heterogeneous populations. Here we explore associations across individuals between DNA methylation transmissibility (proportion of methylation-sensitive loci whose methylation status persists unchanged after male gametogenesis), genetic characteristics (assessed...
Data from: Comparative evaluation of potential indicators and temporal sampling protocols for monitoring genetic erosionSean Hoban, Jan A. Arntzen, Michael W. Bruford, José A. Godoy, A. Rus Hoelzel, Gernot Segelbacher, Carles Vilà & Giorgio Bertorelle
Genetic biodiversity contributes to individual fitness, species' evolutionary potential, and ecosystem stability. Temporal monitoring of the genetic status and trends of wild populations' genetic diversity can provide vital data to inform policy decisions and management actions. However, there is a lack of knowledge regarding which genetic metrics, temporal sampling protocols, and genetic markers are sufficiently sensitive and robust, on conservation-relevant timescales. Here, we tested six genetic metrics and various sampling protocols (number and arrangement of...
Estación Biológica de Doñana11
Max Planck Institute for Ornithology1
Sao Paulo State University1
LIttoral, ENvironment and Societies1
Centre d'Etudes Biologiques de Chizé1
Institute for Game and Wildlife Research1
University of Tennessee at Knoxville1
University of Freiburg1