66 Works

Data from: Diverse guilds provide complementary dispersal services in a woodland expansion process after land abandonment

Gema Escribano-Avila, María Calviño-Cancela, Beatriz Pías, Emilio Virgós, Fernando Valladares & Adrián Escudero
1. Land abandonment due to increasing depopulation of rural areas is an ongoing trend in developed countries worldwide. Abandoned lands represent an opportunity for ecosystem recovery, an urgent need for biodiversity conservation. Seed dispersal services provided by animals are a key feature for this process. Different dispersers may differentially contribute to plant recruitment under different ecological conditions, leading to complementary dispersal services. 2. We studied the dispersal services, quantified as the contribution to plant recruitment,...

Data from: Integrating the pace-of-life syndrome across species, sexes and individuals: covariation of life history and personality under pesticide exposure

Sara Debecker, Iago Sanmartín-Villar, Miguel De Guinea-Luengo, Adolfo Cordero-Rivera & Robby Stoks
The pace-of-life syndrome (POLS) hypothesis integrates covariation of life-history traits along a fast–slow continuum and covariation of behavioural traits along a proactive–reactive personality continuum. Few studies have investigated these predicted life-history/personality associations among species and between sexes. Furthermore, whether and how contaminants interfere with POLS patterns remains unexplored. We tested for covariation patterns in life history and in behaviour, and for life-history/personality covariation among species, among individuals within species and between sexes. Moreover, we investigated...

Data from: Plumage colour and the expression of stress-related genes in gull chicks

Javier Diaz-Real, Sin-Yeon Kim & Alberto Velando
In many bird populations, individuals show remarkable differences in feather colouration, which are often linked to individual differences in physiological traits, but the mechanisms maintaining this covariation are still unclear. Here, we investigate the variability of the melanic colouration in yellow-legged gull Larus michahellis chicks. In this species, hatchlings show high variability in the number and colour intensity of black spots in their plumage. In gulls, last-laid eggs receive less antioxidants but higher levels of...

Timing uncertainty in collective risk dilemmas encourages group reciprocation and polarization

Elias Fernandez Domingos, Jelena Grujić, Francisco C. Santos, Juan C. Burguillo Rial, Georg Kirchsteiger, Francisco C. Santos & Tom Lenaerts
Social dilemmas are often shaped by actions involving uncertain returns only achievable in the future, such as climate action or voluntary vaccination. In this context, uncertainty may produce non-trivial effects. Here, we assess experimentally — through a collective risk dilemma — the effect of timing uncertainty, i.e. how uncertainty about when a target needs to be reached affects the participants’ behaviours. We show that timing uncertainty prompts not only early generosity but also polarised outcomes,...

Negative frequency dependent selection maintains shell banding polymorphisms in two marine snails (Littorina fabalis and L. saxatilis)

Daniel Estévez-Barcia, Juan Galindo & Emilio Rolán-Alvarez
The presence of shell bands is common in gastropods. The marine snails, Littorina fabalis and L. saxatilis, are both polymorphic for this trait. Such polymorphism would be expected to be lost by the action of genetic drift or directional selection, but it appears to be widespread at relatively constant frequencies. This suggests it is maintained by balancing selection on the trait or on a genetically linked trait. Using long time-series of empirical data, we compared...

Biometric conversion factors as a unifying platform for comparative assessment of invasive freshwater bivalves

Neil Coughlan, Eoghan Cunningham, Ross Cuthbert, Patrick Joyce, Pedro Anastacio, Filipe Banha, Nicolás Bonel, Stephanie Bradbeer, Elizabeta Briski, Vincent Butitta, Zuzana Čadková, Jaimie Dick, Karel Douda, Lawrence Eagling, Noé Ferreira-Rodríguez, Leandro Hünicken, Mattias Johansson, Louise Kregting, Anna Labecka, Deliang Li, Florencia Liquin, Jonathan Marescaux, Todd Morris, Patrycja Nowakowska, Małgorzata Ożgo … & Francisco Sylvester
1. Invasive bivalves continue to spread and negatively impact freshwater ecosystems worldwide. As different metrics for body size and biomass are frequently used within the literature to standardise bivalve related ecological impacts (e.g. respiration and filtration rates), the lack of broadly applicable conversion equations currently hinders reliable comparison across bivalve populations. To facilitate improved comparative assessment amongst studies originating from disparate geographic locations, we report body size and biomass conversion equations for six invasive freshwater...

Data from: Cryptic diversity within the endemic Prehensile-tailed gecko Urocotyledon inexpectata across the Seychelles Islands: patterns of phylogeographic structure and isolation at the multilocus level

Sara Rocha, D James Harris & David Posada
Deciphering the process of genetic differentiation of species with insular distributions is relevant for biogeographic and conservation reasons. Despite its importance as old gondwanic islands and part of the Western Indian Ocean biodiversity hotspot, little is known concerning the genetic structure of taxa from the Seychelles islands. We have examined patterns of structure and isolation within Urocotyledon inexpectata (Reptilia: Geckkonidae), an endemic species from this archipelago. Genetic diversity was screened from populations across the archipelago...

ProtASR2: Ancestral Reconstruction of Protein Sequences accounting for Folding Stability

Miguel Arenas & Ugo Bastolla
1. The ancestral sequence reconstruction (ASR) is a molecular evolution technique that provides applications to a variety of fields such as biotechnology and biomedicine. In order to infer ancestral sequences with realistic biological properties, the accuracy of ASR methods is crucial. We previously developed an ASR framework for proteins, called ProtASR, which is based on our site-specific stability constrained substitution (SCS) model with selection on protein folding stability against both unfolding and misfolding. This model...

Data from: Enhanced male coloration after immune challenge increases reproductive potential

Alberto Velando, Rene Beamonte-Barrientos & Roxana Torres
In many animal species, females select a mate on the basis of the expression of secondary sexual traits. A prevalent theory suggests that male ornaments are reliable indicators of immunocompetence, because the cost of immune function prevents cheating. However, sexual signalling is a component of males’ reproductive effort, and an immune challenge may also alter the organism’s perceived future prospects and hence their signalling effort. In this study, to investigate the consequences of mounting an...

Data from: Proteomic evidence of a paedomorphic evolutionary process within a marine snail species: a strategy for adapting to extreme ecological conditions?

Angel P. Diz, María Páez De La Cadena & Emilio Rolán-Alvarez
The exposed and sheltered ecotypes of the marine snail Littorina saxatilis from European rocky shores are considered a key model system to study adaptation and ecological speciation. Previous studies showed that two ecotypes (RB and SU) of this species in NW Spain have differently adapted to different shore levels and microhabitats. In order to understand how this divergent adaptive process has been accomplished, we followed a quantitative proteomic approach to investigate the proteome variation in...

Data from: The role of local ecology during hybridisation at the initial stages of ecological speciation in a marine snail

Juan Galindo, Emilio Rolán-Alvarez, Mónica Martínez-Fernández & Silvia T. Rodríguez-Ramilo
Hybrid zones of ecologically divergent populations are ideal systems to study the interaction between natural selection and gene flow during the initial stages of speciation. Here we perform an AFLP genome scan in parallel hybrid zones between divergent ecotypes of the marine snail Littorina saxatilis, which is considered a model case for the study of ecological speciation. RB (Ridged-Banded) and SU (Smooth-Unbanded) ecotypes are adapted to different shore levels and microhabitats, although they present a...

Data from: Genetic divergence predicts reproductive isolation in damselflies

Rosa Ana Sánchez Guillén, Alex Córdoba-Aguilar, Adolfo Cordero Rivera & Maren Wellenreuther
Reproductive isolation is the defining characteristic of a biological species, and a common but often untested prediction is a positive correlation between reproductive isolation and genetic divergence. Here we test for this correlation in odonates, an order characterized by strong sexual selection. First, we measure reproductive isolation and genetic divergence in eight damselfly genera (30 species pairs) and test for a positive correlation. Second, we estimate the genetic threshold preventing hybrid formation and empirically test...

Data from: Targeted resequencing reveals geographical patterns of differentiation for loci implicated in parallel evolution

Anja M. Westram, Marina Panova, Juan Galindo & Roger K. Butlin
Parallel divergence and speciation provide evidence for the role of divergent selection in generating biological diversity. Recent studies indicate that parallel phenotypic divergence may not have the same genetic basis in different geographical locations - “outlier loci” (loci potentially affected by divergent selection) are often not shared among parallel instances of phenotypic divergence. However, limited sharing may be due, in part, to technical issues if false positive outliers occur. Here, we test this idea in...

Substrate quality and not dominant plant community determines the vertical distribution and C assimilation of enchytraeids in peatlands

Maria J.I. Briones
Peatlands are important carbon (C) stores as a result of acidity, waterlogging conditions and low temperatures slowing decomposition rates. However, climate change is predicted to bring not only changes in abiotic conditions, but also the replacement of peat-forming vegetation, such as Sphagnum mosses, with vascular plants. In these systems, enchytraeid worms represent the dominant mesofaunal group, and previous climate change manipulations have shown that their abundances and vertical distribution are strongly influenced by temperature and...

Data from: Resistance to RHD virus in wild Australian rabbits: comparison of susceptible and resistant individuals using a genomewide approach

Nina I. Schwensow, Harald Detering, Stephen Pederson, Camila Mazzoni, Ron Sinclair, David Peacock, John Kovaliski, Brian Cooke, Joerns Fickel & Simone Sommer
Deciphering the genes involved in disease resistance is essential if we are to understand host–pathogen coevolutionary processes. The rabbit haemorrhagic disease virus (RHDV) was imported into Australia in 1995 as a biocontrol agent to manage one of the most successful and devastating invasive species, the European rabbit (Oryctolagus cuniculus). During the first outbreaks of the disease, RHDV caused mortality rates of up to 97%. Recently, however, increased genetic resistance to RHDV has been reported. Here,...

Data from: Maternal programming of offspring antipredator behavior in a seabird

Judith Morales, Alberto Lucas & Alberto Velando
Predation risk is an important environmental factor for animal populations, expected to trigger maternal effects to prepare offspring for living in an environment with predators. Yet, evidence of adaptive anticipatory maternal effects in wild animals is still weak. Here, we explored this question in a wild colony of yellow-legged gulls, Larus michahellis. To this aim, prior to laying we exposed mothers to either mink decoys or non-predator rabbit decoys and explored the antipredator behavior of...

Data from: Coloration of chicks modulates costly interactions among family members

Judith Morales & Alberto Velando
The resolution of family conflicts over parental care involves elaborate behavioral interactions where signals and information exchange play a central role. Usually the focus is on offspring begging and adult signals and their effect on parental provisioning. Yet, despite offspring of many animal species display structural ornaments during parental dependency, their role in intra-family conflicts remains practically unexplored. In the blue tit, Cyanistes caeruleus, we experimentally manipulated nestling plumage color and food availability in 60...

Data from: Phenotypic integration between anti-predator behaviour and camouflage pattern in juvenile sticklebacks

Sin-Yeon Kim & Alberto Velando
Predation is a strong selective force that promotes the evolution of anti-predator behaviours and camouflage in prey animals. However, the independent evolution of single traits cannot explain how observed phenotypic variations of these traits are maintained within populations. We studied genetic and phenotypic correlations between anti-predator behaviours (shoaling and risk-taking) and morphology traits (pigmentation and size) in juvenile three-spined sticklebacks by using pedigree-based quantitative genetic analysis to test phenotypic integration (or complex phenotype) as an...

Data from: Genetic drift and rapid evolution of viviparity in insular fire salamanders (Salamandra salamandra)

Guillermo Velo-Antón, Kelly R. Zamudio & Adolfo Cordero-Rivera
Continental islands offer an excellent opportunity to investigate adaptive processes and to time microevolutionary changes that precede macroevolutionary events. We performed a population genetic study of the fire salamander (Salamandra salamandra), a species that displays unique intraspecific diversity of reproductive strategies, to address the microevolutionary processes leading to phenotypic and genetic differentiation of island, coastal and interior populations. We used eight microsatellite markers to estimate genetic diversity, population structure, and demographic parameters in viviparous insular...

Data from: Strong asymmetry in the relative strengths of prezygotic and postzygotic barriers between two damselfly sister species

Rosa Ana Sánchez-Guillén, Maren Wellenreuther & Adolfo Cordero-Rivera
One of the longest debates in biology has been over the relative importance of different isolating barriers in speciation. However, for most species, there are few data evaluating their relative contributions and we can only speculate on the general roles of pre- and postzygotic isolation. Here we quantify the absolute and cumulative contribution of 198 potential reproductive barriers between two sympatric damselfly sister species, Ischnura elegans and I. graellsii, including both premating (habitat, temporal, sexual...

Data from: The scale-of-choice effect and how estimates of assortative mating in the wild can be biased due to heterogeneous samples

Emilio Rolan-Alvarez, Antonio Carvajal-Rodriguez, Alicia De Coo, Beatriz Cortés, Daniel Estévez-Barcia, Mar Ferreira, Rubén González & Adriana D. Briscoe
The mode in which sexual organisms choose mates is a key evolutionary process, as it can have a profound impact on fitness and speciation. One way to study mate choice in the wild is by measuring trait correlation between mates. Positive assortative mating is inferred when individuals of a mating pair display traits that are more similar than those expected under random mating while negative assortative mating is the opposite. A recent review of 1134...

Data from: Do the same genes underlie parallel phenotypic divergence in different Littorina saxatilis populations?

Anja M. Westram, Juan Galindo, Magnus Alm Rosenblad, John W. Grahame, Marina Panova & Roger K. Butlin
Parallel patterns of adaptive divergence and speciation are cited as powerful evidence for the role of selection driving these processes. However, it is often not clear whether parallel phenotypic divergence is underlain by parallel genetic changes. Here, we asked about the genetic basis of parallel divergence in the marine snail Littorina saxatilis, which has repeatedly evolved coexisting ecotypes adapted to either crab predation or wave action. We sequenced the transcriptome of snails of both ecotypes...

Data from: A benign juvenile environment reduces the strength of antagonistic pleiotropy and genetic variation in the rate of senescence

Sin-Yeon Kim, Neil B. Metcalfe & Alberto Velando
1. The environment can play an important role in the evolution of senescence because the optimal allocation between somatic maintenance and reproduction depends on external factors influencing life expectancy. 2. The aims of this study were to experimentally test whether environmental conditions during early life can shape senescence schedules, and if so, to examine whether variation among individuals or genotypes with respect to the degree of ageing differs across environments. 3. We tested life-history plasticity...

Immunological changes in nestlings growing under predation risk

Gianluca Roncalli, Manuel Soler, B. Irene Tieleman, Maaike A. Versteegh, Francisco Ruiz–Raya, Elisa Colombo, Mercedes Gómez Sambla & Juan Diego Ibáñez–Álamo
Predation is one of the most relevant selective forces in nature. However, the physiological mechanisms behind anti‐predator strategies have been overlooked, despite their importance to understand predator‐prey interactions. In this context, the immune system could be especially revealing due to its relationship with other critical functions and its ability to enhance prey's probabilities of survival to a predator's attack. Developing organisms (e.g. nestlings) are excellent models to study this topic because they suffer a high...

Predators and dispersers: Context-dependent outcomes of the interactions between rodents and a megafaunal fruit plant

Andrea Loayza, Claudia Luna & Maria Calviño-Cancela
Many plant species bear fruits that suggest adaptation to seed dispersal by extinct megafauna. Present-day seed dispersal of these megafaunal plants is carried out by rodents, which can act as predators or dispersers; whether this interaction is primarily positive or negative can depend on the context. Here, we parameterized a stochastic model using data from the field and experimental arenas to estimate the effect of rodents on the recruitment of Myrcianthes coquimbensis -an Atacama Desert...

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  • University of Vigo
  • Universidade de Vigo
  • University of Gothenburg
  • University of Lisbon
  • National Autonomous University of Mexico
  • University of Leeds
  • Museo Nacional de Ciencias Naturales
  • Vrije Universiteit Brussel
  • University of California System
  • University of Glasgow