27 Works

Data from: The oxidative cost of reproduction depends on early development oxidative stress and sex in a bird species

Ana Angela Romero Haro, Gabriele Sorci, Carlos Alonso-Alvarez & A. A. Romero-Haro
In the early 2000’s, a new component of the cost of reproduction was proposed: oxidative stress. Since then the oxidative cost of reproduction hypothesis has, however, received mixed support. Different arguments have been provided to explain this. Among them, the lack of a life history perspective on most experimental tests was suggested. We manipulated the levels of a key intracellular antioxidant (glutathione) in captive zebra finches (Taeniopygia guttata) during a short period of early life...

Data from: Low-quality birds do not display high-quality signals: the cysteine-pheomelanin mechanism of honesty

Ismael 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: Hybridization during altitudinal range shifts: nuclear introgression leads to extensive cyto-nuclear discordance in the fire salamander

Ricardo Pereira, Iñigo Martínez-Solano, David Buckley & Ricardo J. Pereira
Ecological models predict that, in the face of climate change, taxa occupying steep altitudinal gradients will shift their distributions, leading to the contraction or extinction of the high-elevation (cold-adapted) taxa. However, hybridization between eco-morphologically divergent taxa commonly occurs in nature and may lead to alternative evolutionary outcomes, such as genetic merger or gene flow at specific genes. We evaluate this hypothesis by studying patterns of divergence and gene flow across three replicate contact zones between...

Data of carcass monitoring in rewilding mountain landscapes

Pilar Oliva-Vidal, Esther Sebastián-González & Antoni Margalida
Rural abandonment and subsequent vegetation regeneration (‘passive rewilding’) are expected to increase worldwide, producing cascades of dynamic socioeconomic, landscape and biological changes. Although landscape characteristics strongly influence the structure and functioning of scavengers, little is known about the ecological consequences of passive rewilding due to woody encroachment (i.e., ‘landscape closure’) on scavenging assemblages. We investigated differences in ‘scavenger assemblage composition’ (species richness and abundances) and ‘scavenging efficiency’ (scavenging frequency, detection and consumption times and consumption...

Data from: The role of environment and core-margin effects on range-wide phenotypic variation of a montane grasshopper

Víctor Noguerales, Vicente García-Navas, Pedro J. Cordero & Joaquín Ortego
The integration of genetic information with ecological and phenotypic data constitutes an effective approach to gain insight into the mechanisms determining interpopulation variability and the evolutionary processes underlying local adaptation and incipient speciation. Here, we use the Pyrenean Morales grasshopper (Chorthippus saulcyi moralesi) as study system to (i) analyze the relative role of genetic drift and selection on range-wide patterns of phenotypic differentiation and (ii) identify the potential selective agents (environment, elevation) responsible for variation....

Data from: Species interactions in occurrence data for a community of tick-transmitted pathogens

Agustin Estrada-Peña & José De La Fuente
Interactions between species of ticks, their realised range of hosts, the pathogens they carry and transmit, as well as the geographical distribution of species in the Western Palearctic, have been obtained based on evidence published between 1970–2014. These relationships were linked to remotely-sensed features of temperature and vegetation and used to extract the network of interactions among the organisms. The resulting datasets were focussed on niche overlap among ticks and hosts, species interactions and the...

Data from: Biotic and abiotic factors shape the microbiota of wild-caught populations of the arbovirus vector Culicoides imicola

Sandra Díaz-Sánchez, Angélica Hernández-Jarguín, Alessandra Torina, Isabel G Fernández De Mera, Agustín Estrada-Peña, Margarita Villar, Francesco La Russa, Valeria Blanda, Joaquín Vicente, Santo Caracappa, Christian Gortazar & José De La Fuente
Biting midges of the genus Culicoides are known vectors of arboviruses affecting human and animal health. However, little is known about Culicoides imicola microbiota and its influence on this insect’s biology. In this study, the impact of biotic and abiotic factors on C. imicola microbiota was characterized using shotgun-metagenomic sequencing of whole body DNA samples. Wild-caught C. imicola adult nulliparous females were sampled in two locations from Sicily, Italy. The climatic variables of temperature and...

Genomic insights into the origin of trans-Mediterranean disjunct distributions: The case of the saltmarsh band-winged grasshopper (Mioscirtus wagneri)

Víctor Noguerales, Pedro J. Cordero, L. Lacey Knowles & Joaquín Ortego
Aim: Two main biogeographic hypotheses have been proposed to explain the Mediterranean-Turanian disjunct distributions exhibited by numerous steppe-dwelling organisms, namely (i) dispersal during the Messinian salinity crisis (∼5.96-5.33 Ma) followed by range fragmentation and vicariance, and (ii) Pleistocene colonization and recent processes of population subdivision (<2 Ma). Despite the two hypotheses postulate the role of climatic alterations and changes in landmass configuration on determining such disjunct distributions, estimates of the timing of lineage diversification have...

Data from: Individual genetic diversity and probability of infection by avian malaria parasites in blue tits (Cyanistes caeruleus)

Esperanza S. Ferrer, Vicente García-Navas, Juan Jose Sanz & Joaquin Ortego
Understanding the importance of host genetic diversity for coping with parasites and infectious diseases is a long-standing goal in evolutionary biology. Here, we study the association between probability of infection by avian malaria (Plasmodium relictum) and individual genetic diversity in three blue tit (Cyanistes caeruleus) populations that strongly differ in prevalence of this parasite. For this purpose, we screened avian malaria infections and genotyped 789 blue tits across 26 microsatellite markers. We used two different...

Data from: Consequences of extensive habitat fragmentation in landscape-level patterns of genetic diversity and structure in the Mediterranean esparto grasshopper

Joaquín Ortego, María Pilar Aguirre, Víctor Noguerales & Pedro Javier Cordero
Anthropogenic habitat fragmentation has altered the distribution and population sizes in many organisms worldwide. For this reason, understanding the demographic and genetic consequences of this process is necessary to predict the fate of populations and establish management practices aimed to ensure their viability. In this study, we analyse whether the spatial configuration of remnant semi-natural habitat patches within a chronically fragmented landscape has shaped the patterns of genetic diversity and structure in the habitat-specialist esparto...

Data from: The influence of landscape on gene flow in the eastern massasauga rattlesnake (Sistrurus c. catenatus): insight from computer simulations

Michelle F. DiLeo, Jeremy D. Rouse, José A. Dávila & Stephen C. Lougheed
Understanding how gene flow shapes contemporary population structure requires the explicit consideration of landscape composition and configuration. New landscape genetic approaches allow us to link such heterogeneity to gene flow within and among populations. However, the attribution of cause is difficult when landscape features are spatially correlated, or when genetic patterns reflect past events. We use spatial Bayesian clustering and landscape resistance analysis to identify the landscape features that influence gene flow across two regional...

Data from: The strength of the association between heterozygosity and probability of interannual local recruitment increases with environmental harshness in blue tits

Esperanza S. Ferrer, Vicente García-Navas, Juan José Sanz & Joaquín Ortego
The extent of inbreeding depression and the magnitude of heterozygosity–fitness correlations (HFC) have been suggested to depend on the environmental context in which they are assayed, but little evidence is available for wild populations. We combine extensive molecular and capture–mark–recapture data from a blue tit (Cyanistes caeruleus) population to (1) analyze the relationship between heterozygosity and probability of interannual adult local recruitment and (2) test whether environmental stress imposed by physiologically suboptimal temperatures and rainfall...

Data from: Spatiotemporally explicit demographic modelling supports a joint effect of historical barriers to dispersal and contemporary landscape composition on structuring genomic variation in a red-listed grasshopper

María José González-Serna, Pedro J. Cordero & Joaquín Ortego
Inferring the processes underlying spatial patterns of genomic variation is fundamental to understand how organisms interact with landscape heterogeneity and to identify the factors determining species distributional shifts. Here, we employ genomic data (ddRADSeq) to test biologically-informed models representing historical and contemporary demographic scenarios of population connectivity for the Iberian cross-backed grasshopper Dociostaurus hispanicus, a species with a narrow distribution that currently forms highly fragmented populations. All models incorporated biological aspects of the focal taxon...

Data from: Steep clines within a highly permeable genome across a hybrid zone between two subspecies of the European rabbit

Miguel Carneiro, Stuart J. E. Baird, Sandra Afonso, Esther Ramirez, Pedro Tarroso, Henrique Teotonio, Rafael Villafuerte, Michael W. Nachman & Nuno Ferrand
Maintenance of genetic distinction in the face of gene flow is an important aspect of the speciation process. Here, we provide a detailed spatial and genetic characterization of a hybrid zone between two subspecies of the European rabbit. We examined patterns of allele frequency change for 22 markers located on the autosomes, X-chromosome, Y-chromosome, and mtDNA in 1078 individuals sampled across the hybrid zone. While some loci revealed extremely wide clines (w>=300 km) relative to...

Data from: Comparative landscape genetics of pond-breeding amphibians in Mediterranean temporal wetlands: the positive role of structural heterogeneity in promoting gene flow

Jorge Gutiérrez-Rodríguez, Joao Gonçalves, Emilio Civantos & Iñigo Martínez-Solano
Comparative landscape genetics studies can provide key information to implement cost-effective conservation measures favoring a broad set of taxa. These studies are scarce, particularly in Mediterranean areas, which include diverse but threatened biological communities. Here we focus on Mediterranean wetlands in central Iberia and perform a multi-level, comparative study of two endemic pond-breeding amphibians, a salamander (Pleurodeles waltl) and a toad (Pelobates cultripes). We genotyped 411 salamanders from 20 populations and 306 toads from 16...

Data from: Extreme genetic structure in a social bird species despite high dispersal capacity

Francisco Morinha, José A. Dávila, Bastos Estela, João A. Cabral, Óscar Frías, José L. González, Paulo Travassos, Diogo Carvalho, Borja Milá & Guillermo Blanco
Social barriers have been shown to reduce gene flow and contribute to genetic structure among populations in species with high cognitive capacity and complex societies, such as cetaceans, apes and humans. In birds, high dispersal capacity is thought to prevent population divergence unless major geographic or habitat barriers induce isolation patterns by dispersal, colonization or adaptation limitation. We report that Iberian populations of the red-billed chough, a social, gregarious corvid with high dispersal capacity, show...

Data from: Long-term avian influenza virus epidemiology in a small Spanish wetland ecosystem is driven by the breeding Anseriformes community

Olalla Torrontegui, Vega Alvarez, Pelayo Acevedo, Xeider Gerrikagoitia, Ursula Höfle & Marta Barral
During 2007–2009 and 2012–2014, avian influenza virus (AIV) was studied in a wild avian community of a northern Spanish wetland using non-invasive sampling methods and host identification by COI barcoding. The aim of this longitudinal study was to evaluate AIV dynamics in a natural wetland ecosystem, taking into account both virological aspects and ecological traits of hosts. Global AIV prevalence decreased significantly during the second sampling period (0.3%) compared to the first (6.6%). Circulating subtype...

Glacial cycles drive rapid divergence of cryptic field vole species

Nicholas Fletcher, Pelayo Acevedo, Jeremy S. Herman, Joana Pauperio, Paulo Alves & Jeremy Searle
Understanding the factors that contribute to the generation of reproductively isolated forms is a fundamental goal of evolutionary biology. Cryptic species are an especially interesting challenge to study in this context since they lack obvious morphological differentiation that provides clues to adaptive divergence that may drive reproductive isolation. Geographical isolation in refugial areas during glacial cycling is known to be important for generating genetically divergent populations, but its role in the origination of new species...

Biophysical models unravel associations between glucocorticoids and thermoregulatory costs across avian species

Juan Rubalcaba & Blanca Jimeno
Glucocorticoids (GCs) are metabolic hormones that regulate physiological and behavioural responses to environmental change and mediate homeostasis maintenance in vertebrates. Despite the assumption that GCs covary with energy metabolism, we yet lack a mechanistic understanding of how environmental factors such as temperature modulate GC variation through their effect on organismal energy balance. In particular, the mechanisms linking temperature-dependent metabolic rate and GCs at broad spatial scales and across species remain poorly investigated. Here we used...

Data from: The role of immigration and local adaptation on fine-scale genotypic and phenotypic population divergence in a less mobile passerine

Vicente García-Navas, Esperanza S. Ferrer, Juan José Sanz & Joaquín Ortego
Dispersal and local patterns of adaptation play a major role on the ecological and evolutionary trajectory of natural populations. In this study, we employ a combination of genetic (25 microsatellite markers) and field-based information (seven study years) to analyse the impact of immigration and local patterns of adaptation in two nearby (< 7 km) blue tit (Cyanistes caeruleus) populations. We used genetic assignment analyses to identify immigrant individuals and found that dispersal rate is female-biased...

Data from: The influence of landscape configuration and environment on population genetic structure in a sedentary passerine: insights from loci located in different genomic regions

Esperanza S. Ferrer, Vicente García-Navas, Javier Bueno-Enciso, Rafael Barrientos, Eva Serrano-Davies, Conchi Cáliz-Campal, Juan J. Sanz & Joaquín Ortego
The study of the factors structuring genetic variation can help to infer the neutral and adaptive processes shaping the demographic and evolutionary trajectories of natural populations. Here, we analyse the role of isolation-by distance (IBD), isolation-by-resistance (IBR, defined by landscape composition), and isolation by environment (IBE, estimated as habitat and elevation dissimilarity) in structuring genetic variation of 25 blue tit (Cyanistes caeruleus) populations. We typed 1385 individuals at 26 microsatellite loci classified in two groups...

Data from: Unexpected consequences of a drier world: evidence that delay in late summer rains biases the population sex ratio of an insect

Raul Bonal, Marisa Hernández, Josep Maria Espelta, Alberto Muñoz & José M. Aparicio
The complexity of animal life histories makes it difficult to predict the consequences of climate change on their populations. In this paper, we show, for the first time, that longer summer drought episodes, such as those predicted for the dry Mediterranean region under climate change, may bias insect population sex ratio. Many Mediterranean organisms, like the weevil Curculio elephas, become active again after summer drought. This insect depends on late summer rainfall to soften the...

Data from: Habitat segregation and ecological character displacement in cryptic African malaria mosquitoes

Billy Tene Fossog, Diego Ayala, Pelayo Acevedo, Pierre Kengne, Ignacio Ngomo Abeso Mebuy, Boris Makanga, Julie Magnus, Parfait Awono-Ambene, Flobert Njiokou, Marco Pombi, Christophe Antonio-Nkondjio, Christophe Paupy, Nora J. Besansky & Carlo Costantini
Understanding how divergent selection generates adaptive phenotypic and population diversification provides a mechanistic explanation of speciation in recently separated species pairs. Toward this goal, we sought ecological gradients of divergence between the cryptic malaria vectors Anopheles coluzzii and An. gambiae, and then looked for a physiological trait that may underlie such divergence. Using a large set of occurrence records and eco-geographical information, we built a distribution model to predict the predominance of the two species...

Data from: Integrating genomic and phenotypic data to evaluate alternative phylogenetic and species delimitation hypotheses in a recent evolutionary radiation of grasshoppers

Víctor Noguerales, Pedro Javier Cordero & Joaquín Ortego
Although resolving phylogenetic relationships and establishing species limits is a primary goal of systematics, these tasks remain challenging at both conceptual and analytical levels. Here, we integrated genomic and phenotypic data and employed a comprehensive suite of coalescent-based analyses to develop and evaluate competing phylogenetic and species delimitation hypotheses in a recent evolutionary radiation of grasshoppers (Chorthippus binotatus group) composed of two species and eight putative subspecies. To resolve the evolutionary relationships within this complex,...

Data from: Chromosome inversions and ecological plasticity in the main African malaria mosquitoes

Diego Ayala, Pelayo Acevedo, Marco Pombi, Ibrahima Dia, Daniela Boccolini, Carlo Costantini, Frederic Simard & Didier Fontenille
Chromosome inversions have fascinated the scientific community, mainly because of their role in the rapid adaption of different taxa to changing environments. However, the ecological traits linked to chromosome inversions have been poorly studied. Here, we investigated the roles played by 23 chromosome inversions in the adaptation of the four major African malaria mosquitoes to local environments in Africa. We studied their distribution patterns by using spatially explicit modeling and characterized the ecogeographical determinants of...

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Resource Types

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  • Institute for Game and Wildlife Research
  • Museo Nacional de Ciencias Naturales
  • Estación Biológica de Doñana
  • University of Castile-La Mancha
  • University of Zaragoza
  • University of Zurich
  • Maladies Infectieuses et Vecteurs : Ecologie, Génétique, Evolution et Contrôle
  • University of Montana
  • University of Michigan-Ann Arbor
  • University of Notre Dame