Publications by authors named "R Fortuna"
Eco-evolutionary responses to environmentally induced selection fundamentally depend on magnitudes of genetic variation underlying traits that facilitate population persistence. Additive genetic variances and associated heritabilities can vary across environmental conditions, especially for labile phenotypic traits expressed through early life. However, short-term seasonal dynamics of genetic variances are rarely quantified in wild populations, precluding inference on eco-evolutionary outcomes in seasonally dynamic systems.
View Article and Find Full Text PDFPopulation dynamic and eco-evolutionary responses to environmental variation and change fundamentally depend on combinations of within- and among-cohort variation in the phenotypic expression of key life-history traits, and on corresponding variation in selection on those traits. Specifically, in partially migratory populations, spatio-seasonal dynamics depend on the degree of adaptive phenotypic expression of seasonal migration versus residence, where more individuals migrate when selection favours migration. Opportunity for adaptive (or, conversely, maladaptive) expression could be particularly substantial in early life, through the initial development of migration versus residence.
View Article and Find Full Text PDFArticle Synopsis
- This study investigated the impact of a 6-month prebiotic intervention on physical function in obese adults with knee osteoarthritis.
- Participants were randomly assigned to either a prebiotic group (using oligofructose-enriched inulin) or a placebo group, with various tests conducted to assess changes in physical performance, knee pain, body composition, and gut health.
- Results indicated improved physical function, reduced trunk fat, and potential pain relief in the prebiotic group, suggesting that prebiotics could be beneficial in managing knee osteoarthritis among obese adults.