Heterogeneity in local density allows a positive evolutionary relationship between self-fertilisation and dispersal

15386 10 84762 3 238111 document 84762 Rodger_et_al-2018-Evolution.pdf application/pdf 0544dc79bd337e6655bd7d6fbfb9a7d6 MD5 1326063 2018-07-25 11:38:22 https://pure.iiasa.ac.at/id/eprint/15386/1/Rodger_et_al-2018-Evolution.pdf 15386 1 1 application/pdf text en public cc_by_nc_4

Rodger_et_al-2018-Evolution.pdf

accepted 84763 1 238118 document 84763 indexcodes.txt text/x-c 99e93c7c7f29ea0ab8a2abd535f28a00 MD5 14609 2018-07-25 11:47:02 https://pure.iiasa.ac.at/id/eprint/15386/2/indexcodes.txt 15386 2 2 text/x-c other Generate index codes conversion from text to indexcodes en staffonly

indexcodes.txt

lightbox.jpg

preview.jpg

medium.jpg

small.jpg

http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/84762 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/84762 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/84762 archive 353 disk0/00/01/53/86 2018-07-25 11:40:44 2021-08-27 17:30:35 2018-07-25 11:40:44 article show Rodger J. Landi P. 8869 Hui C. Heterogeneity in local density allows a positive evolutionary relationship between self-fertilisation and dispersal pub prog_eep Adaptive dynamics; Allee Effects; Baker's Law; dispersal; mating system; self-fertilisation Despite empirical evidence for a positive relationship between dispersal and self-fertilisation (selfing), theoretical work predicts that these traits should always be negatively correlated, and the Good Coloniser Syndrome of high dispersal and selfing (Cf. Baker's Law) should not evolve. Critically, previous work assumes that adult density is spatiotemporally homogeneous, so selfing results in identical offspring production for all patches, eliminating the benefit of dispersal for escaping from local resource competition. We investigate the joint evolution of dispersal and selfing in a demographically structured metapopulation model where local density is spatiotemporally heterogeneous due to extinction-recolonisation dynamics. Selfing alleviates outcrossing failure due to low local density (an Allee Effect) while dispersal alleviates competition through dispersal of propagules from high- to low-density patches. Because local density is spatiotemporally heterogenous in our model, selfing does not eliminate heterogeneity in competition, so dispersal remains beneficial even under full selfing. Hence the Good Coloniser Syndrome is evolutionarily stable under a broad range of conditions, and both negative and positive relationships between dispersal and selfing are possible, depending on the environment. Our model thus accommodates positive empirical relationships between dispersal and selfing not predicted by previous theoretical work and provides additional explanations for negative relationships. 2018-09 published Wiley-Blackwell 10.1111/evo.13562 1404 public Evolution 72 9 1784-1800 TRUE 1558-5646 FALSE no info:eu-repo/semantics/article