Floral Integration and Phenotypic Selection on Floral Traits of <i>Ipomoea cavalcantei</i> (Convolvulaceae), a Rare, Endemic, and Endangered Species to the Amazon Ironstone Outcrops.

ABSTRACT: Maintaining evolutionary potential is essential for species persistence, particularly for rare and endemic taxa that are more susceptible to habitat changes. We evaluated floral integration and phenotypic selection on the floral traits of Ipomoea cavalcantei, a species endemic to the ironstone outcrops (cangas) of the Eastern Amazon and primarily pollinated by hummingbirds. Using 90 individuals from a natural population in the Floresta Nacional de Carajás, we conducted six pollination experiments to assess the mating system. We estimated individual fitness through fruit set and characterized floral phenotype by measuring ten traits under a stereomicroscope. We analyzed the mating system using a generalized linear model, assessed floral integration through matrix correlations,

SUBMITTER: Valentin-Silva A 

PROVIDER: S-EPMC12432336 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature