Flight capacity increases then declines from the core to the margins of an invasive species' range.

ABSTRACT: Individuals that disperse farther than other individuals are more likely to be on the frontlines of spreading populations and may be more likely to mate with one another as a consequence of their spatial proximity. Over generations, this process-known as spatial sorting-can produce patterns of increasing dispersal ability from a population's core towards the spreading front. By contrast, when the spread of a population is limited by the availability of suitable habitat, theory predicts that range boundaries can select against more dispersive phenotypes and produce patterns of decreasing dispersal capacity towards population margins. In a common garden study of invasive kudzu bugs (Megacopta cribraria)-which are limited by the availability of hostplants in their southern and western

SUBMITTER: Merwin AC 

PROVIDER: S-EPMC6892516 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature