Evolution of dispersal distance: Maternal investment leads to bimodal dispersal kernels

11552 8 77122 2 213116 document 77122 FronhoferEtal2014_kernelEvolution.pdf application/pdf 88b2c557724250e3e99e8335312aaa0a MD5 221105 2017-04-25 09:40:50 https://pure.iiasa.ac.at/id/eprint/11552/1/FronhoferEtal2014_kernelEvolution.pdf 11552 1 1 application/pdf text en public cc_by_nc_nd

FronhoferEtal2014_kernelEvolution.pdf

accepted 77123 2 213119 document 77123 lightbox.jpg image/png edc09cce13e1072ce4f50af6dca24e00 MD5 18280 2017-04-25 09:41:02 https://pure.iiasa.ac.at/id/eprint/11552/2/lightbox.jpg 11552 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

lightbox.jpg

preview.jpg

medium.jpg

small.jpg

indexcodes.txt

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/77122 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/77122 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/77122 archive 351 disk0/00/01/15/52 2016-01-15 08:53:41 2021-08-27 17:25:17 2016-01-15 08:53:41 article show Fronhofer E.A. Poethke H.J. Dieckmann U. 1668 0000-0001-7089-0393 Evolution of dispersal distance: Maternal investment leads to bimodal dispersal kernels pub iis_ecl prog_eep Competition kernel; Distance-dependent dispersal costs; Maternal effects; Individual-based model; Genetic algorithm Since dispersal research has mainly focused on the evolutionary dynamics of dispersal rates, it remains unclear what shape evolutionarily stable dispersal kernels have. Yet, detailed knowledge about dispersal kernels, quantifying the statistical distribution of dispersal distances, is of pivotal importance for understanding biogeographic diversity, predicting species invasions, and explaining range shifts. We therefore examine the evolution of dispersal kernels in an individual-based model of a population of sessile organisms, such as trees or corals. Specifically, we analyze the influence of three potentially important factors on the shape of dispersal kernels: distance-dependent competition, distance-dependent dispersal costs, and maternal investment reducing an offspring's dispersal costs through a trade-off with maternal fecundity. We find that without maternal investment, competition and dispersal costs lead to unimodal kernels, with increasing dispersal costs reducing the kernel's width and tail weight. Unexpectedly, maternal investment inverts this effect: kernels become bimodal at high dispersal costs. This increases a kernel's width and tail weight, and thus the fraction of long-distance dispersers, at the expense of simultaneously increasing the fraction of non-dispersers. We demonstrate the qualitative robustness of our results against variations in the tested parameter combinations. 2015-01 published Elsevier 10.1016/j.jtbi.2014.10.024 XJ-15-010 Journal of Theoretical Biology; 365:270-279 (21 January 2015) (Published online 5 November 2014) [doi:10.1016/j.jtbi.2014.10.024] 66 public Journal of Theoretical Biology 365 270-279 TRUE 1095-8541 FALSE info:eu-repo/semantics/article