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Intro
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Tracking short-term evolution in a pedigreed wild population
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Evolution is the change in alele frequencies over time
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How to study the evolutionary processes that change alele frequencies
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The population pedigree permits direct observation of the processes that change allele frequencies
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Some long-term demographic studies have nearly complete population pedigrees
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Long-term demographic study at Archbold Biological Station
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Population genetics with pedigrees contemporary evolution in natural populations
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Autosomes and sex chromosomes have different patterns of genetic variation
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Genealogical contributions over time
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Genealogical contributions are higher than genetic contributions
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Expected genetic contributions of males & females
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Sex chromosomes have different transmission rules
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Male & female genetic contributions on autosomes the z chromosome follow expected ratios
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Contributions of male & female immigrants differ for autosomal
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Partitioning variance in alele frequency change
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Sex-biased transmission and demography on short-term evolution
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Selection can act at different stages of the life cycle
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Selection component analysis tests for salection at different life-cycle stages
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A fullkaihood approach for testing for gamatic selection
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Two gamatic selection hits
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Testing for viability selection, sexual selection, & fecundity selection
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Lifetime reproductive success is primarily driven by survival
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Limited evidence of sexual conflict
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Some evidence of life-history trade-offs
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Understanding short-term evolution in nature
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Acknowledgments
Description:
Explore a comprehensive lecture on tracking short-term evolution in a pedigreed wild population. Delve into the study of evolutionary processes that change allele frequencies, focusing on population pedigrees as a direct observation method. Learn about long-term demographic studies, particularly at Archbold Biological Station, and examine population genetics with pedigrees in contemporary evolution. Analyze the differences in genetic variation between autosomes and sex chromosomes, and understand genealogical and genetic contributions over time. Investigate sex-biased transmission, demography, and their effects on short-term evolution. Discover selection component analysis and its application in testing for selection at various life-cycle stages. Examine evidence of sexual conflict, life-history trade-offs, and factors influencing lifetime reproductive success. Gain insights into understanding short-term evolution in natural populations through this in-depth 54-minute presentation by Nancy Chen, part of the EvoEcoSeminars series. Read more

Tracking Short-Term Evolution in a Pedigreed Wild Population

EvoEcoSeminars
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#Science #Biology #Genetics #Population Genetics #Genetic Variation #Evolutionary Biology #Evolution #Natural Selection #Environmental Science #Wildlife Conservation
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Intro