Experimental Evidence of an Eco-evolutionary Feedback during Adaptive Divergence
| Autor: | Bänz Lundsgaard-Hansen, Blake Matthews, Thierry Aebischer, Karen E. Sullam, Ole Seehausen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Food Chain Population 010603 evolutionary biology 01 natural sciences Zooplankton General Biochemistry Genetics and Molecular Biology Mesocosm 03 medical and health sciences Rivers Animals Juvenile Ecosystem Biomass education education.field_of_study Biomass (ecology) biology Agricultural and Biological Sciences(all) Ecology Biochemistry Genetics and Molecular Biology(all) Stickleback Phosphorus Plankton biology.organism_classification Adaptation Physiological Biological Evolution Smegmamorpha Lakes 030104 developmental biology 570 Life sciences General Agricultural and Biological Sciences |
| Zdroj: | Current Biology. 26(4):483-489 |
| ISSN: | 0960-9822 |
| DOI: | 10.1016/j.cub.2015.11.070 |
| Popis: | Differences in how organisms modify their environment can evolve rapidly and might influence adaptive population divergence [1 and 2]. 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 provide evidence for reciprocal interactions between ecosystem dynamics and evolutionary change (i.e., eco-evolutionary feedbacks) in the early stages of adaptive population divergence. |
| Databáze: | OpenAIRE |
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