A case of recent long-distance dispersal in the Piriqueta caroliniana complex
Related Experiment Video
Updated: Aug 9, 2026

A Push-pull Protocol to Reduce Colonization of Bird Nest Boxes by Honey Bees
Published on: September 4, 2016
1Department of Biology, Portland State University, P.O. Box 751, Portland, OR 97207, USA.
Abstract:
We investigated restriction fragment length polymorphism (RFLP) variation in the chloroplast DNA regions trnS and trnC in 53 populations of the herbaceous perennial Piriqueta caroliniana complex, encompassing its known North American range. The goals of this study were to expand the geographic range of a previous study and to determine the origin of an apparently anomalous population, which possessed a phenotype that was incongruous with other populations in the region. The phylogeography of these populations was investigated with nested clade analysis of a one-step network phylogeny that was based on the RFLP variation of the chloroplast genome. We found evidence of restricted gene flow and past fragmentation, which is consistent with a previous study on the phylogeography of this species complex. The morphological and genetic profile of the one anomalous population indicates that it recently originated from south Florida. Given the urban location of this geographically disjunct population, it is probable that this is an example of a recent human-mediated long-distance dispersal event.
More Related Videos
07:10At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques
Published on: February 11, 2020
07:17Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations
Published on: October 28, 2022
Related Concept Videos
Understanding Species and Reproductive Barriers
Formation of Species
Speciation Rates
Conservation of Small Populations
Habitat Fragmentation
Genetics of Speciation