title: Trade-offs between sexual and asexual reproduction in the genus Mimulus.
abstract: Six estimates of resource allocation to sexual reproduction (nectar concentration, nectar volume, sugar production, pollinator visitation rates, fruit-set, and seed production) and a single estimate of resource allocation to asexual reproduction (the rate of rooted-branch production) were examined for five species of Mimulus. There were significant interspecific differences for all paramaters. With the exception of nectar concentration, there was 1) a consistent positive correlation among the parameters measuring allocation to sexual reproduction, and 2) a significant negative correlation between parameters measuring allocation to sexual reproduction and the rate of rooted-branch production (asexual reproduction). The results indicate that Mimulus species which produce the highest volumes of nectar 1) receive the most pollinator visits, 2) have the highest fruit-set, 3) produce the most seeds, and 4) produce the fewest rooted branches.
authors.affiliation: Department of Biology, The University of Utah, 84112, Salt Lake City, UT, USA.
authors.forename: S
authors.initials: S
authors.lastname: Sutherland
authors.affiliation: Department of Biology, The University of Utah, 84112, Salt Lake City, UT, USA.
authors.forename: R K
authors.initials: RK
authors.lastname: Vickery
keywords: Asexual reproduction; Mimulus; Resource allocation; Sexual reproduction; Trade-offs