caa a22 4500 60619326X CHVBK 20210128100908.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s10682-015-9789-0 doi (NATIONALLICENCE)springer-10.1007/s10682-015-9789-0 The influence of imperfect matching habitat choice on evolution in source-sink environments [Elektronische Daten] [Robert Holt, Michael Barfield] Studies of evolution in source-sink environments can illuminate when to expect niche conservatism, versus niche evolution. A species can persist in habitats outside its ecological niche (sinks, where mean fitness <1), given recurrent immigration from source habitats within the niche. Persistence of this demographic asymmetry among habitats over many generations (despite recurrent exposure of a species to the sink habitat) is tantamount to niche conservatism. We have previously shown that given genetic variation in a trait determining fitness in both source and sink, "perfect” phenotype-specific habitat choice substantially speeds up adaptation to the sink. (With perfect habitat choice, individuals disperse out of the source if and only if expected fitness in the sink is greater.) However, we observed that sometimes imperfect matching habitat choice could hamper sink adaptation. We explore this observation in more detail, using individual-based simulations for evolution of a single quantitative trait. With imperfect habitat choice and one-way adult dispersal (source to sink), adaptation in the sink can be slowed, relative to phenotype-independent dispersal. This counterintuitive result reflects directional effects of emigration on the source genetic distribution, which shifts in a way that hampers sink adaptive evolution. However, with bidirectional juvenile dispersal, imperfect habitat choice caused a strong increase in sink adaptation. Thus, the likelihood of niche conservatism or evolution may depend in a sensitive way on factors such as the life history stage, directionality, and imperfection of non-random dispersal. More broadly, our results (along with other recent results) illustrate that non-random dispersal can profoundly influence evolution via how it molds the pool of genetic variation available for selection. Springer International Publishing Switzerland, 2015 Imperfect matching habitat choice nationallicence Source-sink nationallicence Niche conservatism nationallicence Niche evolution nationallicence Holt Robert Department of Biology, University of Florida, 111 Bartram Hall, PO Box 118525, 32611-8525, Gainesville, FL, USA aut Barfield Michael Department of Biology, University of Florida, 111 Bartram Hall, PO Box 118525, 32611-8525, Gainesville, FL, USA aut Evolutionary Ecology Springer International Publishing 29/6(2015-11-01), 887-904 0269-7653 29:6<887 2015 29 10682 https://doi.org/10.1007/s10682-015-9789-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10682-015-9789-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Holt Robert Department of Biology, University of Florida, 111 Bartram Hall, PO Box 118525, 32611-8525, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Barfield Michael Department of Biology, University of Florida, 111 Bartram Hall, PO Box 118525, 32611-8525, Gainesville, FL, USA aut NATIONALLICENCE 773 0- Evolutionary Ecology Springer International Publishing 29/6(2015-11-01), 887-904 0269-7653 29:6<887 2015 29 10682