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Petitjean Q, Jean S, Gandar A, Côte J, Laffaille P, Jacquin L. Stress responses in fish: From molecular to evolutionary processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:371-380. [PMID: 31154210 DOI: 10.1016/j.scitotenv.2019.05.357] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
In the context of global changes, fish are increasingly exposed to multiple stressors that have cascading effects from molecules to the whole individual, thereby affecting wild fish populations through selective processes. In this review, we synthetize recent advances in molecular biology and evolutionary biology to outline some potentially important effects of stressors on fish across biological levels. Given the burgeoning literature, we highlight four promising avenues of research. First, (1) the exposure to multiple stressors can lead to unexpected synergistic or antagonistic effects, which should be better taken into account to improve our predictions of the effects of actual and future human activities on aquatic organisms. Second, (2) we argue that such interactive effects might be due to switches in energy metabolism leading to threshold effects. Under multiple stress exposure, fish could switch from a "compensation" strategy, i.e. a reallocation of energy to defenses and repair to a "conservation" strategy, i.e. blocking of stress responses leading to strong deleterious effects and high mortality. Third, (3) this could have cascading effects on fish survival and population persistence but multiscale studies are still rare. We propose emerging tools merging different levels of biological organization to better predict population resilience under multiple stressors. Fourth (4), there are strong variations in sensitivity among populations, which might arise from transgenerational effects of stressors through plastic, genetic, and epigenetic mechanisms. This can lead to local adaptation or maladaptation, with strong impacts on the evolutionary trajectories of wild fish populations. With this review, we hope to encourage future research to bridge the gap between molecular ecology, ecotoxicology and evolutionary biology to better understand the evolution of responses of fishes to current and future multiple stressors in the context of global changes.
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Affiliation(s)
- Quentin Petitjean
- Laboratoire EDB Évolution & Diversité Biologique UMR 5174, Université de Toulouse, Université Toulouse 3 Paul Sabatier, UPS, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France; Laboratoire ECOLAB UMR 5245, CNRS, INPT-ENSAT, Université Toulouse 3 Paul Sabatier; avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
| | - Séverine Jean
- Laboratoire ECOLAB UMR 5245, CNRS, INPT-ENSAT, Université Toulouse 3 Paul Sabatier; avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
| | - Allison Gandar
- Laboratoire ECOLAB UMR 5245, CNRS, INPT-ENSAT, Université Toulouse 3 Paul Sabatier; avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
| | - Jessica Côte
- Laboratoire EDB Évolution & Diversité Biologique UMR 5174, Université de Toulouse, Université Toulouse 3 Paul Sabatier, UPS, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France
| | - Pascal Laffaille
- Laboratoire ECOLAB UMR 5245, CNRS, INPT-ENSAT, Université Toulouse 3 Paul Sabatier; avenue de l'Agrobiopole, 31326 Castanet-Tolosan, France
| | - Lisa Jacquin
- Laboratoire EDB Évolution & Diversité Biologique UMR 5174, Université de Toulouse, Université Toulouse 3 Paul Sabatier, UPS, CNRS, IRD, 118 route de Narbonne, 31062 Toulouse, France.
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Rey O, Eizaguirre C, Angers B, Baltazar‐Soares M, Sagonas K, Prunier JG, Blanchet S. Linking epigenetics and biological conservation: Towards a
conservation epigenetics
perspective. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13429] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Olivier Rey
- CNRS UMR 5244, Interactions Hôtes‐Pathogènes‐Environnements (IHPE) Université de Perpignan Via Domitia Perpignan France
| | - Christophe Eizaguirre
- School of Biological and Chemical Sciences Queen Mary University of London London UK
| | - Bernard Angers
- Department of Biological Sciences Université de Montréal Montreal QC Canada
| | | | - Kostas Sagonas
- School of Biological and Chemical Sciences Queen Mary University of London London UK
| | - Jérôme G. Prunier
- Evolution et Diversité Biologique, École Nationale Supérieure de Formation de l'Enseignement Agricole (ENSFEA), CNRS, UPS, UMR5174 Institut de Recherche pour le Développement (IRD) Toulouse France
| | - Simon Blanchet
- Evolution et Diversité Biologique, École Nationale Supérieure de Formation de l'Enseignement Agricole (ENSFEA), CNRS, UPS, UMR5174 Institut de Recherche pour le Développement (IRD) Toulouse France
- Station d'Ecologie Théorique et Expérimentale, UMR5321, CNRS Université Paul Sabatier (UP) Moulis France
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Danchin É, Pocheville A, Huneman P. Early in life effects and heredity: reconciling neo-Darwinism with neo-Lamarckism under the banner of the inclusive evolutionary synthesis. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180113. [PMID: 30966884 PMCID: PMC6460090 DOI: 10.1098/rstb.2018.0113] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2018] [Indexed: 12/22/2022] Open
Abstract
Recent discoveries show that early in life effects often have long-lasting influences, sometimes even spanning several generations. Such intergenerational effects of early life events appear not easily reconcilable with strict genetic inheritance. However, an integrative evolutionary medicine of early life effects needs a sound view of inheritance in development and evolution. Here, we show how to articulate the gene-centred and non-gene-centred visions of inheritance. We first recall the coexistence of two gene concepts in scientific discussions, a statistical one (focused on patterns of parent-offspring resemblance, and implicitly including non-DNA-sequence-based resemblance), and a molecular one (based on the DNA sequence). We then show how all the different mechanisms of inheritance recently discovered can be integrated into an inclusive theory of evolution where different mechanisms would enable adaptation to changing environments at different timescales. One surprising consequence of this integrative vision of inheritance is that early in life effects start much earlier than fertilization. This article is part of the theme issue 'Developing differences: early-life effects and evolutionary medicine'.
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Affiliation(s)
- Étienne Danchin
- Laboratoire Évolution and Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, 118 route de Narbonne, Bat 4R1, 31062 Toulouse cedex 9, France
| | - Arnaud Pocheville
- Laboratoire Évolution and Diversité Biologique (EDB UMR 5174), Université de Toulouse Midi-Pyrénées, CNRS, IRD, UPS, 118 route de Narbonne, Bat 4R1, 31062 Toulouse cedex 9, France
- Department of Philosophy and Charles Perkins Centre, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Philippe Huneman
- Institut d'Histoire et de Philosophie des Sciences et des Techniques, CNRS/Université Paris I Panthéon-Sorbonne, Paris, France
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Gourcilleau D, Mousset M, Latutrie M, Marin S, Delaunay A, Maury S, Pujol B. Assessing Global DNA Methylation Changes Associated with Plasticity in Seven Highly Inbred Lines of Snapdragon Plants ( Antirrhinum majus). Genes (Basel) 2019; 10:E256. [PMID: 30925802 PMCID: PMC6523709 DOI: 10.3390/genes10040256] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/14/2019] [Accepted: 03/21/2019] [Indexed: 11/16/2022] Open
Abstract
Genetic and epigenetic variations are commonly known to underlie phenotypic plastic responses to environmental cues. However, the role of epigenetic variation in plastic responses harboring ecological significance in nature remains to be assessed. The shade avoidance response (SAR) of plants is one of the most prevalent examples of phenotypic plasticity. It is a phenotypic syndrome including stem elongation and multiple other traits. Its ecological significance is widely acknowledged, and it can be adaptive in the presence of competition for light. Underlying genes and pathways were identified, but evidence for its epigenetic basis remains scarce. We used a proven and accessible approach at the population level and compared global DNA methylation between plants exposed to regular light and three different magnitudes of shade in seven highly inbred lines of snapdragon plants (Antirrhinum majus) grown in a greenhouse. Our results brought evidence of a strong SAR syndrome for which magnitude did not vary between lines. They also brought evidence that its magnitude was not associated with the global DNA methylation percentage for five of the six traits under study. The magnitude of stem elongation was significantly associated with global DNA demethylation. We discuss the limits of this approach and why caution must be taken with such results. In-depth approaches at the DNA sequence level will be necessary to better understand the molecular basis of the SAR syndrome.
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Affiliation(s)
- Delphine Gourcilleau
- Laboratoire Évolution & Diversité Biologique (EDB, UMR 5174), Université Fédérale de Toulouse Midi-Pyrénées, CNRS, IRD, UPS. 118 route de Narbonne, Bat 4R1, CEDEX 9, 31062 Toulouse, France.
| | - Mathilde Mousset
- Laboratoire Évolution & Diversité Biologique (EDB, UMR 5174), Université Fédérale de Toulouse Midi-Pyrénées, CNRS, IRD, UPS. 118 route de Narbonne, Bat 4R1, CEDEX 9, 31062 Toulouse, France.
| | - Mathieu Latutrie
- Laboratoire Évolution & Diversité Biologique (EDB, UMR 5174), Université Fédérale de Toulouse Midi-Pyrénées, CNRS, IRD, UPS. 118 route de Narbonne, Bat 4R1, CEDEX 9, 31062 Toulouse, France.
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 52 Avenue Paul Alduy, CEDEX 9, 66860 Perpignan, France.
| | - Sara Marin
- Laboratoire Évolution & Diversité Biologique (EDB, UMR 5174), Université Fédérale de Toulouse Midi-Pyrénées, CNRS, IRD, UPS. 118 route de Narbonne, Bat 4R1, CEDEX 9, 31062 Toulouse, France.
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 52 Avenue Paul Alduy, CEDEX 9, 66860 Perpignan, France.
| | - Alain Delaunay
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC, EA 1207 USC 1328 INRA), Université Orléans, 45067 Orléans, France.
| | - Stéphane Maury
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC, EA 1207 USC 1328 INRA), Université Orléans, 45067 Orléans, France.
| | - Benoît Pujol
- Laboratoire Évolution & Diversité Biologique (EDB, UMR 5174), Université Fédérale de Toulouse Midi-Pyrénées, CNRS, IRD, UPS. 118 route de Narbonne, Bat 4R1, CEDEX 9, 31062 Toulouse, France.
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 52 Avenue Paul Alduy, CEDEX 9, 66860 Perpignan, France.
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Evolution without standing genetic variation: change in transgenerational plastic response under persistent predation pressure. Heredity (Edinb) 2018; 121:266-281. [PMID: 29959428 DOI: 10.1038/s41437-018-0108-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 05/22/2018] [Accepted: 06/03/2018] [Indexed: 11/08/2022] Open
Abstract
Transgenerational phenotypic plasticity is a fast non-genetic response to environmental modifications that can buffer the effects of environmental stresses on populations. However, little is known about the evolution of plasticity in the absence of standing genetic variation although several non-genetic inheritance mechanisms have now been identified. Here we monitored the pea aphid transgenerational phenotypic response to ladybird predators (production of winged offspring) during 27 generations of experimental evolution in the absence of initial genetic variation (clonal multiplication starting from a single individual). We found that the frequency of winged aphids first increased rapidly in response to predators and then remained stable over 25 generations, implying a stable phenotypic reconstruction at each generation. We also found that the high frequency of winged aphids persisted for one generation after removing predators. Winged aphid frequency then entered a refractory phase during which it dropped below the level of control lines for at least two generations before returning to it. Interestingly, the persistence of the winged phenotype decreased and the refractory phase lasted longer with the increasing number of generations of exposure to predators. Finally, we found that aphids continuously exposed to predators for 22 generations evolved a significantly weaker plastic response than aphids never exposed to predators, which, in turn, increased their fitness in presence of predators. Our findings therefore showcased an example of experimental evolution of plasticity in the absence of initial genetic variation and highlight the importance of integrating several components of non-genetic inheritance to detect evolutionary responses to environmental changes.
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