The scale of local adaptation in Mimulus guttatus comparing life history races, ecotypes, and populations

The scale of local adaptation in Mimulus guttatus : comparing life history races, ecotypes, and populations

© 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 211(2016), 1 vom: 11. Juli, Seite 345-56
1. Verfasser: DeMarche, Megan L (VerfasserIn)
Weitere Verfasser: Kay, Kathleen M, Angert, Amy L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Comparative Study Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, Non-U.S. Gov't Mimulus guttatus foreign advantage (FA) home-site advantage life history life table response experiment local adaptation (LA) transplant
Beschreibung
Zusammenfassung:© 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.
Fitness trade-offs between environments are central to the evolution of biodiversity. Although transplant studies often document fitness trade-offs consistent with local adaptation (LA), many have also found an advantage of foreign genotypes (foreign advantage (FA)). Understanding the mechanisms driving the magnitude and distribution of fitness variation requires comparative approaches that test the ecological scales at which these different patterns emerge. We used a common garden transplant experiment to compare the relative fitnesses of native vs foreign genotypes at three nested ecological scales within Mimulus guttatus: annual vs perennial life history races, perennial ecotypes across an elevational range, and populations within perennial elevational ecotypes. We integrated fitness across the life-cycle and decomposed LA vs FA into contributions from different fitness components. We found LA, measured as home-site advantage, between annual and perennial races and a trend towards LA among populations within montane habitats. Conversely, we found strong FA of low-elevation perennials in a montane environment. LA between life history races reflects the fitness advantages of adult survival and vegetative growth in a mesic environment. Within the perennial race, recent climate conditions or nonselective processes, such as dispersal limitation or mutational load, could explain FA of low-elevation perennials in a montane environment
Beschreibung:Date Completed 30.01.2018
Date Revised 30.09.2021
published: Print-Electronic
CommentIn: New Phytol. 2016 Jul;211(1):8-10. - PMID 27240708
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.13971