The colour of noise matters for the response of a population to environmental change
(English)Manuscript (preprint) (Other academic)
Recent models predict that the pattern of stochastic fluctuations (noise) matters for theevolutionary response to environmental change. In this study we test predictions from a recenttheoretical model in a laboratory experiment using the seed beetle Callosobruchus maculatus as amodel organism. Populations were exposed to different regimes of temperature increase; withoutnoise and with noise with no temporal autocorrelation (white noise) and very high temporalautocorrelation (red noise) over 18 generations. Developmental time decreased in the treatmentwith white noise fluctuation, but not in the treatment without noise or with red noise fluctuation,compared to the control lines. The main conclusions is, that the pattern of environmentalstochasticity is important for the evolutionary response of a population to a changing environmentas predicted by model simulations.
environmental noise, changing environment, life-history traits, seed beetle, empirical evidence
Research subject Animal Ecology
IdentifiersURN: urn:nbn:se:uu:diva-159278OAI: oai:DiVA.org:uu-159278DiVA: diva2:443656