Baby makes three: Maternal, paternal, and zygotic genetic effects shape larval phenotypic evolution
| Autor: | Christina Zakas, Matthew V. Rockman |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Life‐history evolution 0106 biological sciences 0301 basic medicine quantitative genetics Offspring Zygote Population Biology Genome 010603 evolutionary biology 01 natural sciences Fathers 03 medical and health sciences Genotype Genetics Animals Humans education Selection (genetic algorithm) Ecology Evolution Behavior and Systematics Evolution of development Larva education.field_of_study fungi Maternal effect larval ecology Polychaeta Original Articles Quantitative genetics Phenotype Genetic architecture 030104 developmental biology Evolutionary biology Evolutionary developmental biology maternal effects Female Original Article Streblospio benedicti General Agricultural and Biological Sciences |
| Zdroj: | Evolution; International Journal of Organic Evolution |
| ISSN: | 1558-5646 0014-3820 |
| Popis: | The evolutionary potential of a population is shaped by the genetic architecture of its life-history traits. Early-life phenotypes are influenced by both maternal and offspring genotype, and efforts to understand life-history evolution therefore require consideration of the interactions between these separate but correlated genomes. We used a four-generation experimental pedigree to estimate the genetic architecture of early-life phenotypes in a species with dramatic variation in larval size and morphology. In the polychaete annelidStreblospio benedicti, females make either many small eggs that develop into complex larvae that feed in the plankton or few large eggs that develop into benthic juveniles without having to feed as larvae. By isolating the contributions of maternal, paternal, and zygotic genotype to larval traits, we determined that larval anatomical structures are governed by the offspring genotype at a small number of large-effect loci. Larval size is not shaped by the larva’s own genotype but instead depends on loci that act in the mother, and at two genomic locations, by loci that act in the father. The overall phenotype of each larva thus depends on three separate genomes, and a population’s response to selection on larval traits will reflect the interactions among them. |
| Databáze: | OpenAIRE |
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