Local adaptation to higher temperatures reduces immigration success of genotypes from a warmer region in the water flea Daphnia

Van Doorslaer, Wendy; Vanoverbeke, Joost; Duvivier, Cathy; Rousseaux, Sarah; Jansen, Mieke; Jansen, Bastiaan; Feuchtmayr, Heidrun; Atkinson, David; Moss, Brian; Stoks, Robby; De Meester, Luc. 2009 Local adaptation to higher temperatures reduces immigration success of genotypes from a warmer region in the water flea Daphnia. Global Change Biology, 15 (12). 3046-3055. 10.1111/j.1365-2486.2009.01980.x

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There is growing awareness that microevolutionary dynamics may alter ecological processes. Rising temperatures under global change are expected to open windows for establishment of species and genotypes from warmer regions. Yet, microevolutionary tracking of temperature change by local populations may reduce establishment success of these immigrants. We exposed a UK population of the water flea, Daphnia magna, to two temperature regimes during a 1.5-year experimental evolution trial, and subsequently compared competitive strength of non-warm-adapted and warm-adapted D. magna in competition with French genotypes. Our results indicate that local microevolutionary responses to global warming may reduce establishment success of immigrant genotypes that are preadapted to warmer climate. Simulation modeling shows that microevolution results in a reduced likelihood and speed of displacement of local populations by immigrant genotypes under realistic immigrant/resident ratios. We conclude that local evolutionary dynamics may shift the relative impact of local and regional processes in response to global change.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1111/j.1365-2486.2009.01980.x
Programmes: CEH Topics & Objectives 2009 - 2012 > Water > WA Topic 1 - Variability and Change in Water Systems
CEH Sections: Parr
ISSN: 1354-1013
Additional Keywords: Daphnia, ecological–evolutionary interface, establishment success, evolving metacommunities, global warming, immigration, local adaptation, rapid evolution, temperature, warm-adapted genotypes
NORA Subject Terms: Ecology and Environment
Date made live: 05 Feb 2010 11:20 +0 (UTC)

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