Data from: Selection of floral traits by pollinators and seed predators during sequential life history stages

Organismal traits often influence fitness via interactions with multiple
species. That selection is not necessarily predictable from pairwise
interactions, such as when interactions occur during different lifecycle
stages. Theoretically, directional selection during two sequential
episodes, e.g., pollination and seed survival, can generate quadratic or
correlational selection for a set of traits that passes both selective
filters. We compared strength of selection during pollination versus seed
predation in the field and tested whether interactions with multiple
species give rise to non-linear selection on floral traits. We planted
common gardens with seeds of two species of Ipomopsis and hybrids in sites
where pollination was primarily by hummingbirds or also included
hawkmoths. We examined selection on six floral traits, including corolla
width, sepal width, color, nectar, and two scent compounds. 
Female fitness (seeds) was broken down into fitness during (1) pollination
(seeds initiated) and (2) seed predation (proportion seeds escaping fly
predation). All traits showed evidence of selection. Directional and
quadratic selection were stronger during seed initiation than seed
predation. Correlational selection occurred mostly during seed initiation
rather than arising from combining species interactions at two points in
the lifecycle.  These results underscore how multispecies
interations can combine to exert selection on trait combinations.