A5085256596- Genetic diversity and population structure
- Physiological and biochemical adaptations
- Fish Ecology and Management Studies
- Evolution and Genetic Dynamics
- Animal Behavior and Reproduction
- Fish Biology and Ecology Studies
- Chromosomal and Genetic Variations
- Fish biology, ecology, and behavior
- Genomics and Phylogenetic Studies
- Genetic and phenotypic traits in livestock
- Genetic Mapping and Diversity in Plants and Animals
- Genetically Modified Organisms Research
- Plant and animal studies
- Insect Resistance and Genetics
- Animal Genetics and Reproduction
Centro de Investigaciones Cientifícas de las Huastecas 'Aguazarca'
2021-2025
Stanford University
2021-2025
The evolution of reproductive barriers is the first step in formation new species and can help us understand diversification life on Earth. These often take form hybrid incompatibilities, which alleles derived from two different no longer interact properly hybrids
Abstract The evolution of reproductive barriers leads to the formation new species. However, recent research has demonstrated that hybridization been pervasive across tree life even in presence strong barriers. Using swordtail fishes (genus Xiphophorus ), an emerging model system, we document overlapping mechanisms act as gene flow between birchmanni and cortezi by combining genomic sequencing from natural hybrid populations, experimental laboratory crosses, behavioural assays, sperm...
Over the past 2 decades, biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common-not just in particular lineages but taxonomic groups across tree of life. As a result, genomes many modern species harbor regions inherited from related species. This observation has raised fundamental questions about degree which genomic outcomes hybridization are repeatable and natural selection drives such repeatability. However, lack...
Abstract How barriers to gene flow arise between closely related species is one of the oldest questions in evolutionary biology. Classic models biology predict that negative epistatic interactions variants genomes diverged lineages, known as hybrid incompatibilities, will reduce viability or fertility hybrids. The genetic architecture these and paths through which they have profound implications for efficacy incompatibilities species. While been studied using theoretical approaches several...
Abstract The evolution of reproductive barriers is the first step in formation new species and can help us understand diversification life on Earth. These often take form “hybrid incompatibilities,” where alleles derived from two different no longer interact properly hybrids. Theory predicts that hybrid incompatibilities may be more likely to arise at rapidly evolving genes involving multiple should common, but there has been sparse empirical data evaluate these predictions. Here, we...
One of the mechanisms that can lead to formation new species occurs through evolution reproductive barriers. However, recent research has demonstrated hybridization been pervasive across tree life even in presence strong Swordtail fishes (genus
Abstract Across the tree of life, species have repeatedly evolved similar phenotypes. While well-studied for ecological traits, there is also evidence recurrent evolution sexually selected traits. Swordtail fish (Xiphophorus) are a classic model system studying sexual selection, and female Xiphophorus exhibit strong mate preferences large male body size range dimorphic ornaments. Interestingly, traits been lost multiple times in genus. However, has uncertainty over number losses...
Understanding how organisms adapt to changing environments is a core focus of research in evolutionary biology. One common mechanism adaptive introgression, which has received increasing attention as potential route rapid adaptation populations struggling the face ecological change, particularly global climate change. However, hybridization can also result deleterious genetic interactions that may limit benefits introgression. Here, we used combination genome-wide quantitative trait locus...
Over the past two decades, evolutionary biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common - not just in particular lineages but taxonomic groups across tree of life. As a result, genomes many modern species harbor regions inherited from related species. This observation has raised fundamental questions about degree which genomic outcomes hybridization are repeatable and natural selection drives such repeatability....
Abstract Across the tree of life, species have repeatedly evolved similar phenotypes. While well-studied for ecological traits, there is also evidence convergent evolution sexually selected traits. Swordtail fish ( Xiphophorus ) are a classic model system studying sexual selection, and female exhibit strong mate preferences large male body size range dimorphic ornaments. However, traits been lost multiple times in genus. Phylogenetic relationships between this group historically...
Abstract Over the past two decades researchers have documented extent of natural hybridization between closely related species using genomic tools. Many across tree life show evidence with their evolutionary relatives. In some cases, this is complex—involving gene flow more than species. While common over timescales, proposed that it may be even in contemporary populations where anthropogenic disturbance has modified a myriad aspects environments which organisms live and reproduce. Here, we...
Summary How phenotypic diversity originates and persists within populations are classic puzzles in evolutionary biology. While polymorphisms hypothesized to be under balancing selection segregate many species, it remains rare for the genetic basis selective forces both known same trait, leading an incomplete understanding of classes polymorphisms. Here, we uncover architecture a balanced sexual mimicry polymorphism identify behavioral mechanisms that may involved its maintenance swordtail...
Abstract Organisms have evolved diverse reproductive strategies that impact the probability their offspring survive to adulthood. Here, we describe divergence in strategy between two closely related species of swordtail fish ( Xiphophorus ). Swordtail and relatives viviparity: they internal fertilization give birth fully developed fry. We find one species, X. malinche , which lives high-elevation environments, has larger than its closest relative birchmanni dwarfs size other genus. The fry...
Abstract Over the past two decades researchers have documented extent of natural hybridization between closely related species using genomic tools. Many across tree life show evidence with their evolutionary relatives. In some cases, this is complex – involving gene flow more than species. While common over timescales, proposed that it may be even in contemporary populations where anthropogenic disturbance has modified myriad aspects environments which organisms live and reproduce. Here, we...
Abstract Understanding how organisms adapt to changing environments is a core focus of research in evolutionary biology. One common mechanism adaptive introgression, which has received increasing attention as potential route rapid adaptation populations struggling the face ecological change, particularly global climate change. However, hybridization can also result deleterious genetic interactions that may limit benefits introgression. Here, we used combination genome-wide quantitative trait...