Thosteman, Hanna
- Lunds Universitet
Sammanfattning
1. In flowering plants that produce concealed rewards, pollinator foraging preferences may select for floral advertisement traits that are correlated with rewards. To date, studies have not focused on the potential for honest signals to vary across populations, which could occur due to differences in pollinator communities or plant mating system.2. We tested for variation in honest signals across and within populations and mating systems in Arabis alpina, a broadly distributed arctic-alpine perennial herb that is visited by a variable community of insects. In a greenhouse common garden, we tested for correlations between corolla area, floral scent and nectar volume in 29 populations. In 12 field populations, we examined variation in pollen limitation and corolla area.3. Across and within populations and mating systems, larger flowers generally produced more nectar. Total scent emission was not correlated with nectar production, but two compounds-phenylacetaldehyde and benzyl alcohol-may be honest signals in some populations. Corolla area was correlated with pollen limitation only across populations.4. Our results suggest that honest signals may be similar across populations but may not result from contemporary direct selection on floral advertisements.
Nyckelord
Arabis alpina; floral rewards; floral scent; natural selection; pollination; trait correlation; volatile organic compounds
Publicerad i
Functional Ecology
2023, volym: 37, nummer: 9, sidor: 2511-2522
SLU författare
UKÄ forskningsämne
Evolutionsbiologi
Ekologi
Publikationens identifierare
- DOI: https://doi.org/10.1111/1365-2435.14405
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/143601