Adaptation costs to constant and alternating polluted environments

Autor: Dutilleul, Morgan, Réale, Denis, Goussen, Benoit, Lecomte, Catherine, Galas, Simon, Bonzom, Jean-Marc
Přispěvatelé: Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Département des Sciences Biologiques [Montréal], Université du Québec à Montréal = University of Québec in Montréal (UQAM), Laboratoire d'écotoxicologie des radionucléides (IRSN/PRP-ENV/SERIS/LECO), Service de Recherche et d'Expertise sur les Risques environnementaux (IRSN/PRP-ENV/SERIS), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Institut National de l'Environnement Industriel et des Risques (INERIS), Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] (IBMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'écotoxicologie des radionucléides (PRP-ENV/SERIS/LECO), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Département des Sciences Biologiques, Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 1 (UM1), Université Montpellier 2 - Sciences et Techniques (UM2), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Evolutionary Applications
Evolutionary Applications, 2017, Evolutionary Toxicology, 10 (8), pp.839-851. ⟨10.1111/eva.12510⟩
Evolutionary Applications, Blackwell, 2017, 10 (8, SI), pp.839-851. ⟨10.1111/eva.12510⟩
Evolutionary Applications, Blackwell, 2017, Evolutionary Toxicology, 10 (8), pp.839-851. ⟨10.1111/eva.12510⟩
ISSN: 1752-4563
1752-4571
Popis: International audience; Some populations quickly adapt to strong and novel selection pressures caused by anthropogenic stressors. However, this short-term evolutionary response to novel and harsh environmental conditions may lead to adaptation costs, and evaluating these costs is important if we want to understand the evolution of resistance to an-thropogenic stressors. In this experimental evolution study, we exposed Caenorhabditis elegans populations to uranium (U populations), salt (NaCl populations) and alternating uranium/salt treatments (U/NaCl populations) and to a control environment (C populations), over 22 generations. In parallel, we ran common-garden and reciprocal-transplant experiments to assess the adaptive costs for populations that have evolved in the different environmental conditions. Our results showed rapid evolutionary changes in life history characteristics of populations exposed to the different pollution regimes. Furthermore, adaptive costs depended on the type of pollutant: pollution-adapted populations had lower fitness than C populations , when the populations were returned to their original environment. Fitness in uranium environments was lower for NaCl populations than for U populations. In contrast, fitness in salt environments was similar between U and NaCl populations. Moreover, fitness of U/NaCl populations showed similar or higher fitness in both the uranium and the salt environments compared to populations adapted to constant uranium or salt environments. Our results show that adaptive evolution to a particular stressor can lead to either adaptive costs or benefits once in contact with another stressor. Furthermore, we did not find any evidence that adaptation to alternating stressors was associated with additional adaption costs. This study highlights the need to incorporate adaptive cost assessments when undertaking ecological risk assessments of pollutants.
Databáze: OpenAIRE
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