| Title: | "Measuring, comparing and interpreting phenotypic selection on floral scent" |
| Author(s): | Opedal OH; Gross K; Chapurlat E; Parachnowitsch A; Joffard N; Sletvold N; Ovaskainen O; Friberg M; |
| Address: | "Biodiversity Unit, Department of Biology, Lund University, Lund, Sweden. Department of Environment & Biodiversity, Paris Lodron University of Salzburg, Salzburg, Austria. Plant Ecology and Evolution, Department of Ecology and Genetics, EBC, Uppsala University, Uppsala, Sweden. Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden. Department of Biology, University of New Brunswick, Fredericton, New Brunswick, Canada. University of Lille, UMR 8198 - Evo-Eco-Paleo, Lille, France. Department of Biological and Environmental Science, University of Jyvaskyla, Jyvaskyla, Finland. Organismal and Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland. Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway" |
| ISSN/ISBN: | 1420-9101 (Electronic) 1010-061X (Print) 1010-061X (Linking) |
| Abstract: | "Natural selection on floral scent composition is a key element of the hypothesis that pollinators and other floral visitors drive scent evolution. The measure of such selection is complicated by the high-dimensional nature of floral scent data and uncertainty about the cognitive processes involved in scent-mediated communication. We use dimension reduction through reduced-rank regression to jointly estimate a scent composite trait under selection and the strength of selection acting on this trait. To assess and compare variation in selection on scent across species, time and space, we reanalyse 22 datasets on six species from four previous studies. The results agreed qualitatively with previous analyses in terms of identifying populations and scent compounds subject to stronger selection but also allowed us to evaluate and compare the strength of selection on scent across studies. Doing so revealed that selection on floral scent was highly variable, and overall about as common and as strong as selection on other phenotypic traits involved in pollinator attraction or pollen transfer. These results are consistent with an important role of floral scent in pollinator attraction. Our approach should be useful for further studies of plant-animal communication and for studies of selection on other high-dimensional phenotypes. In particular, our approach will be useful for studies of pollinator-mediated selection on complex scent blends comprising many volatiles, and when no prior information on the physiological responses of pollinators to scent compounds is available" |
| Keywords: | Animals *Odorants Pollination Flowers/physiology *Volatile Organic Compounds Pheromones Phenotype floral fragrance floral scent natural selection plant-pollinator interactions reduced-rank regression selection gradient; |
| Notes: | "MedlineOpedal, Oystein H Gross, Karin Chapurlat, Elodie Parachnowitsch, Amy Joffard, Nina Sletvold, Nina Ovaskainen, Otso Friberg, Magne eng 20:323/Carl Tryggers Stiftelse for Vetenskaplig Forskning/ 284601/Academy of Finland/ 309581/Academy of Finland/ 223257/Jane and Aatos Erkko Foundation and the Research Council of Norway through its Centres of Excellence Funding Scheme/ Centre for Biodiversity Dynamics and MF from the Swedish Research Council and the Crafoord Foundation/ Research Support, Non-U.S. Gov't Switzerland 2022/10/01 J Evol Biol. 2022 Nov; 35(11):1432-1441. doi: 10.1111/jeb.14103. Epub 2022 Sep 30" |
