Experimental Evidence of an Eco-evolutionary Feedback during Adaptive Divergence

Current Biology : CB
Blake MatthewsOle Seehausen

Abstract

Differences in how organisms modify their environment can evolve rapidly and might influence adaptive population divergence. In a common garden experiment in aquatic mesocosms, we found that adult stickleback from a recently diverged pair of lake and stream populations had contrasting effects on ecosystem metrics. These modifications were caused by both genetic and plastic differences between populations and were sometimes comparable in magnitude to those caused by the presence/absence of stickleback. Lake and stream fish differentially affected the biomass of zooplankton and phytoplankton, the concentration of phosphorus, and the abundance of several prey (e.g., copepods) and non-prey (e.g., cyanobacteria) species. The adult-mediated effects on mesocosm ecosystems influenced the survival and growth of a subsequent generation of juvenile stickleback reared in the same mesocosms. The prior presence of adults decreased the overall growth rate of juveniles, and the prior presence of stream adults lowered overall juvenile survival. Among the survivors, lake juveniles grew faster than co-occurring stream juveniles, except in mesocosm ecosystems previously modified by adult lake fish that were reared on plankton. Overall, our results...Continue Reading

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Citations

Jul 19, 2016·Evolutionary Ecology·Kevin LalandMarcus W Feldman
Feb 26, 2016·Current Biology : CB·Andrew P BeckermanAlan O Bergland
Dec 15, 2017·Genome Génome / Conseil National De Recherches Canada·Blake MatthewsRomana Limberger
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Oct 1, 2017·Nature Ecology & Evolution·Rebecca J BestBlake Matthews
Oct 17, 2018·Proceedings of the National Academy of Sciences of the United States of America·Djordje BajićAlvaro Sánchez
Apr 22, 2017·Ecology and Evolution·Miguel Costa LealBlake Matthews
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Aug 14, 2020·Ecology and Evolution·Gabriela Montejo-KovacevichPatrik Nosil
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Jul 17, 2021·Nature Ecology & Evolution·Leonardo OñaChristian Kost
Sep 9, 2021·Journal of Fish Biology·Julien CucheroussetKjetil Hindar

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