Rapid evolution of unimodal but not of linear thermal performance curves inDaphnia magna

Author:

Wang Ying-Jie1ORCID,Tüzün Nedim12ORCID,De Meester Luc324ORCID,Feuchtmayr Heidrun5ORCID,Sentis Arnaud6ORCID,Stoks Robby1ORCID

Affiliation:

1. Evolutionary Stress Ecology and Ecotoxicology, University of Leuven, Debériotstraat 32, 3000 Leuven, Belgium

2. Leibniz Institut für Gewässerökologie und Binnenfischerei (IGB), 12587 Berlin, Germany

3. Laboratory of Aquatic Ecology, University of Leuven, Debériotstraat 32, 3000 Leuven, Belgium

4. Institute of Biology, Freie Universität Berlin, 14195 Berlin, Germany

5. UK Centre for Ecology and Hydrology, Lancaster Environment Center, Lancaster LA1 4AP, UK

6. INRAE, Aix-Marseille Université, UMR RECOVER, 3275 route Cézanne, 13182 Aix-en-Provence, France

Abstract

Species may cope with warming through both rapid evolutionary and plastic responses. While thermal performance curves (TPCs), reflecting thermal plasticity, are considered powerful tools to understand the impact of warming on ectotherms, their rapid evolution has been rarely studied for multiple traits. We capitalized on a 2-year experimental evolution trial in outdoor mesocosms that were kept at ambient temperatures or heated 4°C above ambient, by testing in a follow-up common-garden experiment, for rapid evolution of the TPCs for multiple key traits of the water fleaDaphnia magna. The heat-selectedDaphniashowed evolutionary shifts of the unimodal TPCs for survival, fecundity at first clutch and intrinsic population growth rate toward higher optimum temperatures, and a less pronounced downward curvature indicating a better ability to keep fitness high across a range of high temperatures. We detected no evolution of the linear TPCs for somatic growth, mass and development rate, and for the traits related to energy gain (ingestion rate) and costs (metabolic rate). As a result, also the relative thermal slope of energy gain versus energy costs did not vary. These results suggest the overall (rather thanper capita) top-down impact ofD. magnamay increase under rapid thermal evolution.

Funder

Fonds Wetenschappelijk Onderzoek

KU Leuven

Publisher

The Royal Society

Subject

General Agricultural and Biological Sciences,General Environmental Science,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Temperature adaptation and its impact on the shape of performance curves inDrosophilapopulations;Proceedings of the Royal Society B: Biological Sciences;2023-05-10

2. Rapid evolution of unimodal but not of linear thermal performance curves inDaphnia magna;Proceedings of the Royal Society B: Biological Sciences;2023-01-11

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