A5103138212- Genetic diversity and population structure
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Marine and coastal plant biology
- Mollusks and Parasites Studies
- Marine Bivalve and Aquaculture Studies
- Genomics and Phylogenetic Studies
- Plant and animal studies
- Animal Behavior and Reproduction
- Environmental DNA in Biodiversity Studies
- Genetic and phenotypic traits in livestock
- Evolution and Genetic Dynamics
- Ecology and Vegetation Dynamics Studies
- Cephalopods and Marine Biology
- Physiological and biochemical adaptations
- Study of Mite Species
- Morphological variations and asymmetry
- Environmental Toxicology and Ecotoxicology
- Tracheal and airway disorders
- Protist diversity and phylogeny
- Molecular Biology Techniques and Applications
- Chromosomal and Genetic Variations
- Animal Ecology and Behavior Studies
- Insect and Arachnid Ecology and Behavior
- Invertebrate Taxonomy and Ecology
Universidade de Vigo
2016-2025
Universidade de Santiago de Compostela
2024
Southern Illinois University Carbondale
2024
Weatherford College
2024
Instituto de Investigacións Mariñas
2020
University of Sheffield
2008-2014
Centro Médico ABC
2011
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
2005
Parallel evolution of similar phenotypes provides strong evidence for the operation natural selection. Where these contribute to reproductive isolation, they further support a role divergent, habitat-associated selection in speciation. However, observation pairs divergent ecotypes currently occupying contrasting habitats distinct geographical regions is not sufficient infer parallel origins. Here we show striking phenotypic divergence between populations rocky-shore gastropod, Littorina...
The conservation of biodiversity from the genetic to community levels is fundamental for continual provision ecosystem services (ES), benefits that ecosystems provide people. Genetic and genomic diversity enhance resilience populations communities underpin functions services. We show genomics applications are mostly limited flagship species their ES management underachieved. propose a framework on how can guide sustainable bridge this genomics-ES 'application gap'. review knowledge in single...
Parallel patterns of adaptive divergence and speciation are cited as powerful evidence for the role selection driving these processes. However, it is often not clear whether parallel phenotypic underlain by genetic changes. Here, we asked about basis in marine snail Littorina saxatilis, which has repeatedly evolved coexisting ecotypes adapted to either crab predation or wave action. We sequenced transcriptome snails both from three distant geographical locations (Spain, Sweden United...
Abstract Theory suggests that speciation is possible without physical isolation of populations (hereafter, nonallopatric speciation), but recent models need the support irrefutable empirical examples. We collected snails ( Littorina saxatilis ) from three areas on NW coast Spain to investigate population genetic structure two ecotypes. Earlier studies suggest these ecotypes may represent incipient species: a large, thick‐shelled ‘RB’ ecotype living among barnacles in upper intertidal zone...
The Galician sympatric ecotypes of Littorina saxatilis have been proposed as a model system for studying parallel ecological speciation. Such makes clear prediction: candidate loci (for divergent adaptation) should present higher level geographical differentiation than noncandidate (neutral) loci. We used 2356 amplified fragment length polymorphisms (AFLPs) and four microsatellite to identify adaptation using the F(ST) outlier method. Three per cent studied AFLP were identified associated...
Abstract Genome scans have been used in the studies of ecological speciation to find genomic regions (‘outlier loci’) showing reduced gene flow between divergent populations/species. High‐throughput sequencing (‘454’) offers new opportunities this field via transcriptome sequencing. Divergent ecotypes marine gastropod Littorina saxatilis represent a good example incipient speciation. We performed 454‐based genome scan H and M L . from British Isles using cDNA pooled individuals. Allele...
The role of natural selection in promoting reproductive isolation has received substantial renewed interest within the last two decades. As a consequence, study ecological speciation become an extremely productive research area modern evolutionary biology. Recent innovations sequencing technologies offer unprecedented opportunity to mechanisms involved speciation. Genome scans provide significant insights but have some important limitations; efforts are needed integrate them with other...
Abstract In certain North Atlantic rocky shores, two chromosomal lineages of Nucella lapillus have been observed at different extremes an environmental gradient. Here, we determined the presence this polymorphism, resulting from Robertsonian translocations, in populations Iberian Peninsula spanning a similar Interestingly, found monomorphic (2n = 26) across gradient while only polymorphic 27-36) exposed microhabitats, and never both types together. These differ morphologically genetically...
Abstract The intertidal snail Littorina saxatilis has repeatedly evolved two parallel ecotypes assumed to be wave adapted and predatory shore crab adapted, but the magnitude targets of predator‐driven selection are unknown. In Spain, a small, ecotype with large aperture from lower large, thick‐shelled upper meet in mid‐shore show partial size‐assortative mating. We performed complementary field tethering laboratory predation experiments; first set compared survival different size‐classes...
The role of habitat choice in reproductive isolation and ecological speciation has often been overlooked, despite acknowledgement its ability to facilitate local adaptation. It can form part the process through various evolutionary mechanisms, yet where included models little thought given these underlying mechanisms. Here, we propose describe three independent criteria ten different scenarios which may promote or maintain are result all possible combinations criteria, providing a conceptual...
Abstract Hybrid zones of ecologically divergent populations are ideal systems to study the interaction between natural selection and gene flow during initial stages speciation. Here, we perform an amplified fragment length polymorphism ( AFLP ) genome scan in parallel hybrid ecotypes marine snail L ittorina saxatilis , which is considered a model case for ecological Ridged‐Banded RB Smooth‐Unbanded SU adapted different shore levels microhabitats, although they present sympatric distribution...
Abstract The rough periwinkle, Littorina saxatilis , is a model system for studying parallel ecological speciation in microparapatry. Phenotypically wave‐adapted and crab‐adapted ecotypes that hybridize within the middle shore are replicated along northwestern coast of Spain have likely arisen from two separate glacial refugia. We tested whether greater geographic separation corresponding to reduced opportunity contemporary or historical gene flow between resulted less genomic divergence....
Parallel divergence and speciation provide evidence for the role of divergent selection in generating biological diversity. Recent studies indicate that parallel phenotypic may not have same genetic basis different geographical locations - 'outlier loci' (loci potentially affected by selection) are often shared among instances divergence. However, limited sharing be due, part, to technical issues if false-positive outliers occur. Here, we test this idea marine snail Littorina saxatilis,...
Abstract Understanding how speciation can take place in the presence of homogenizing gene flow remains a major challenge evolutionary biology. In early stages ecological speciation, reproductive isolation between populations occupying different habitats is expected to be concentrated around genes for local adaptation. These genomic regions will show high divergence while exchange other genome should continue relatively unimpaired, resulting low levels differentiation. The problem explain...
Abstract We present an interactive, searchable expressed sequence tag database for the periwinkle snail Littorina saxatilis , upcoming model species in evolutionary biology. The is result of a hybrid assembly between Sanger and 454 sequences, 1290 147 491 sequences respectively. Normalized non‐normalized cDNA was obtained from different ecotypes L. collected UK Sweden. (LSD) contains 26 537 contigs, which 2453 showed similarity with annotated proteins UniProt. Querying LSD permits selection...
Natural color polymorphisms are widespread across animal species and usually have a simple genetic basis. This makes them an ideal system to study the evolutionary mechanisms responsible for maintaining biodiversity. In some populations of intertidal snail Littorina fabalis , variation in shell has remained stable years, but unknown. Previous studies suggest that this stability could be caused by frequency-dependent sexual selection, hypothesis not been tested. We analyzed polymorphism...
Abstract A fundamental issue in speciation research is to evaluate phenotypic variation and the genomics driving evolution of reproductive isolation between sister taxa. Above all, hybrid zones are excellent study systems for researchers examine association genetic differentiation, strength selection. We investigated two contact marine gastropod Littorina saxatilis utilized landmark‐based geometric morphometric analysis together with amplified fragment length polymorphism ( AFLP ) markers...
In recent decades biologists studying speciation have come to consider that the process does not necessarily require presence of a geographical barrier. Rather, it now seems be possible for reproductive barriers evolve within what was hitherto single ‘‘species.’’ The intertidal snail Littorina saxatilis has been focus considerable amount work in this context, and is thought as good case study ‘‘ecological speciation.’’ We review some briefly prospects future developments.
Thermal performance curves (TPCs) provide a powerful framework to assess the evolution of thermal sensitivity in populations exposed divergent selection regimes across latitude. However, there is lack consensus regarding extent which physiological adjustments that compensate for latitudinal temperature variation (metabolic cold adaptation; MCA) may alter shape TPCs, including potential repercussion on upper limits. To address this, we compared TPCs cardiac activity latitudinally-separated...
Background Despite the recent sequencing of seven ant genomes, no genomic data are available for genus Formica, an important group study eusocial traits. We sequenced transcriptome Formica exsecta with 454 FLX Titanium technology from a pooled sample workers 70 Finnish colonies. Results About 1,000,000 reads were obtained normalised cDNA library. compared assemblers MIRA3.0 and Newbler2.6 showed that latter performed better on this dataset due to new option which is dedicated improve contig...