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1. Within-species variation in the gut microbiome of medaka (Oryzias latipes) is driven by the interaction of light intensity and genetic background

Author

Evangelista, Charlotte, Kamenova, Stefaniya, Diaz Pauli, Beatriz, Sandkjenn, Joakim, Vøllestad, Leif Asbjørn, Edeline, Eric, Trosvik, Pål, and de Muinck, Eric Jacques

Subjects
communities, 16S rRNA gene sequencing, harvest-induced evolution, mesocosm, light, fish density, Archaeology, CC1-960, Science
Abstract

Unravelling evolution-by-environment interactions on the gut microbiome is particularly relevant considering the unprecedented level of human-driven disruption of the ecological and evolutionary trajectories of species. Here, we aimed to evaluate whether an evolutionary response to size-selective mortality influences the gut microbiome of medaka (Oryzias latipes), how environmental conditions interact with the genetic background of medaka on their microbiota, and the association between microbiome diversity and medaka growth-related traits. To do so, we studied two lineages of medaka with known divergence in foraging efficiency and life history raised under antagonistic size-selective regimes for 10 generations (i.e. the largest or the smallest breeders were removed to mimic fishing-like or natural mortality). In pond mesocosms, the two lineages were subjected to contrasting population density and light intensity (used as proxies of resource availability). We observed significant differences in the gut microbiome composition and richness between the two lines, and this effect was mediated by light intensity. The bacterial richness of fishing-like medaka (small-breeder line) was reduced by 34% under low-light conditions compared to high-light conditions, while it remained unchanged in natural mortality-selected medaka (large-breeder line). However, the observed changes in bacterial richness did not correlate with changes in adult growth-related traits. Given the growing evidence about the gut microbiomes importance to host health, more in-depth studies are required to fully understand the role of the microbiome in size-selected organisms and the possible ecosystem-level consequences.

Published
2023
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2. Direct effect of artificial warming on communities is stronger than its indirect effect through body mass reduction.

Author

Bazin, Simon, Diouloufet, Virginie, Molina, Ange, Peroux, Tiphaine, Montoya, Jose M., Blanchet, Simon, Edeline, Eric, Jacquet, Stéphan, Rasconi, Serena, Fayolle, Stéphanie, Campana, Marina, Zambeaux, Thalia, Leclerc, Camille, Lassus, Rémy, Morla, Julie, Daufresne, Martin, and Sentis, Arnaud

Subjects
SEASONAL temperature variations, SIZE of fishes, BODY size, TROPHIC cascades, ORYZIAS latipes, PREDATION
Abstract

Theory predicts that morphological and bioenergetic constraints due to temperature‐induced body size reduction can modulate the direct effects of warming on biotic interactions, with consequent effects on trophic cascades and biomass distribution. However, these theoretical predictions have rarely been tested empirically. Our aim was to distinguish the indirect effects of warming‐induced body size reductions from the direct effects of warming on community structure. We conducted a mesocosm experiment manipulating factorially 1) body size reduction in the medaka fish Oryzias latipes using two populations raised for several generations under contrasted climate conditions and 2) warming (+4°C), to test their independent and interactive effects on the structure of prey and primary resource communities, the predator–prey biomass ratio and the biomass size spectra. We further dissected the effects of seasonal temperature variation from the effects of constant artificial warming. We found that the indirect effects of warming (i.e. fish body size reduction) on composition and structure of communities as well as their biomass size spectra were of marginal amplitude compared to the direct effects of seasonal temperature variation and constant warming. There were no changes in community composition in response to fish body size reduction or constant warming. However, the density of macroinvertebrates and zooplankton were maximal at intermediate seasonal water temperatures and lower in constantly‐heated mesocosms. Contrastingly, phytoplankton was not strongly affected by seasonal temperature or warming, but rather responded to grazing effects of zooplankton. Finally, we found a reduction in predator–prey biomass ratio under warming and at the warmest seasonal temperature, inducing a steeper slope of the biomass size spectra under increasing seasonal (but not constant) temperature. We conclude that the direct effects of climate change on freshwater communities are stronger than its indirect effects mediated by body mass reduction. [ABSTRACT FROM AUTHOR]

Published
2024
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3. The interaction between warming and enrichment accelerates food‐web simplification in freshwater systems.

Author

Bonnaffé, Willem, Danet, Alain, Leclerc, Camille, Frossard, Victor, Edeline, Eric, and Sentis, Arnaud

Subjects
GLOBAL warming, BIOCHEMICAL oxygen demand, FISH communities, FRESH water, FISHING villages
Abstract

Nutrient enrichment and climate warming threaten freshwater systems. Metabolic theory and the paradox of enrichment predict that both stressors independently can lead to simpler food‐webs having fewer nodes, shorter food‐chains and lower connectance, but cancel each other's effects when simultaneously present. Yet, these theoretical predictions remain untested in complex natural systems. We inferred the food‐web structure of 256 lakes and 373 streams from standardized fish community samplings in France. Contrary to theoretical predictions, we found that warming shortens fish food‐chain length and that this effect was magnified in enriched streams and lakes. Additionally, lakes experiencing enrichment exhibit lower connectance in their fish food‐webs. Our study suggests that warming and enrichment interact to magnify food‐web simplification in nature, raising further concerns about the fate of freshwater systems as climate change effects will dramatically increase in the coming decades. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Density-dependent consequences of size-selective induced life-history changes to population fitness in medaka (Oryzias latipes)

Author

Evangelista, Charlotte, Vollestad, Leif Asbjorn, Pauli, Beatriz Diaz, and Edeline, Eric

Subjects
Population biology, Fishing, Earth sciences
Abstract

There is an increasing concern about the potential for size-selective harvest to impair population persistence. Yet little is known about the relative contribution of the evolutionary (shifts in life history) and demographic effects (decreased population density and size truncation) of harvesting to changes in fitness. Using medaka (Oryzias latipes), we experimentally investigated the fitness consequences of antagonistic size-dependent selection under contrasted levels of density (low versus high) and size structure (uniform versus truncated). The size-dependent selection generated large- and small-breeder lines with fast growth and late maturity versus slow growth and early maturity life histories, respectively. A decrease in density had a positive effect on almost all fitness components, while size truncation only had a positive effect on fish growth. Small-breeder fish grew slower and had a greater probability of reproducing, at least when considering small-sized females. The number of larvae and juveniles did not differ between the two lines. Finally, the positive effect of decreased density on population asymptotic growth rate was less pronounced in small-breeders than in large-breeders of medaka. These findings stress the importance of considering the ramifications of fishing-adapted life history to population persistence in the light of density-dependent population dynamics. Les effets potentiellement negatifs de la peche taille-selective sur la persistance des populations de poissons sont preoccupants. Pourtant, les effets relatifs de revolution (changement d'histoire de vie) et de la demographie (reduction des densites et troncation des tailles corporelles) dans les changements de valeur selective induits par la peche restent mal evalues. Nous avons teste experimentalement chez le medaka (Oryzias latipes) les consequences de la selection taille-dependante sur la valeur selective, et ce a differents niveaux de densite (faible et forte) et de structure en taille (complete ou tronquee). Au prealable, nous avions genere par selection bi-directionnelle sur la taille deux lignees evolutivement divergentes de medaka caracterisees l'une par une reproduction a une petite taille corporelle (petits reproducteurs), et l'autre par une reproduction a une grande taille corporelle (grands reproducteurs). La diminution de la densite a eu un effet positif sur presque toutes les composantes de la valeur selective, alors que la troncation des tailles n'a eu d'effet que sur la croissance corporelle. Les individus de la lignee des petits reproducteurs grandissaient moins rapidement et avaient une plus forte probabilite de se reproduire, du moins quand on considerait les femelles de petite taille. Le nombre de larves et de juveniles etait similaire entre les deux lignees. Enfin, l'effet positif de la diminution de densite sur la valeur selective moyenne etait moins prononce dans la lignee des petits reproducteurs. Ces resultats soulignent l'importance de considerer les repercussions des changements d'histoire de vie induits par la peche selective sur la persistance des populations, en particulier dans un contexte de changement densite- dependant de la dynamique des populations., Introduction Anthropogenic perturbations can have detrimental effects on biodiversity, not solely through the loss of large species (Dirzo et al. 2014; Scheffers et al. 2016; Merckx et al. 2018), but [...]

Published
2020
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8. Sperm competition experiments reveal low prezygotic postmating isolation between parasitic and nonparasitic lamprey ecotypes

Author

Decanter, Nolwenn, Normand, Romane, Souissi, Ahmed, Labbé, Catherine, Edeline, Eric, Evanno, Guillaume, Decanter, Nolwenn, Normand, Romane, Souissi, Ahmed, Labbé, Catherine, Edeline, Eric, and Evanno, Guillaume

Abstract

The role of postmating sexual selection as a potential reproductive barrier in speciation is not well understood. Here, we studied the effects of sperm competition and cryptic female choice as putative postmating barriers in two lamprey ecotypes with a partial reproductive isolation. The European river lamprey Lampetra fluviatilis is anadromous and parasitic of other fish species, whereas the brook lamprey Lampetra planeri is freshwater resident and nonparasitic. We measured sperm traits in both ecotypes and designed sperm competition experiments to test the occurrence of cryptic female choice. We also performed sperm competition experiments either at equal semen volume or equal sperm number to investigate the role of sperm velocity on fertilization success. We observed distinct sperm traits between ecotypes with a higher sperm concentration and a lower sperm velocity for L. planeri compared with L. fluviatilis. The outcomes of sperm competition reflected these differences in sperm traits, and there was no evidence for cryptic female choice irrespective of female ecotype. At equal semen volume, L. planeri males had a higher fertilization success than L. fluviatilis and vice versa at equal sperm number. Our results demonstrate that different sperm traits between ecotypes can influence the male reproductive success and thus gene flow between L. planeri and L. fluviatilis. However, postmating prezygotic barriers are absent and thus cannot explain the partial reproductive isolation between ecotypes.

Published
2023
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9. Within-species variation in the gut microbiome of fish is driven by the interaction of light intensity and genetic background

Author

Evangelista, Charlotte, Kamenova, Stefaniya, Diaz Pauli, Beatriz, Sandkjenn, Joakim, Vøllestad, Leif Asbjorn, Edeline, Eric, Trosvik, Pal, De Muinck, Eric Jacques, Evangelista, Charlotte, Kamenova, Stefaniya, Diaz Pauli, Beatriz, Sandkjenn, Joakim, Vøllestad, Leif Asbjorn, Edeline, Eric, Trosvik, Pal, and De Muinck, Eric Jacques

Abstract

Gut microbiome diversity and functions are jointly shaped by the host’s genetic background and environmental conditions, but the consequences of this interaction are still unclear. Unravelling the effect of the interaction between evolution and environment on the gut microbiome is particularly relevant considering the unprecedented level of human-driven disruption on the ecological and evolutionary trajectories of species. Here, we aimed to evaluate whether size-selective mortality influences the gut microbiome of medaka (Oryzias latipes), how environment conditions modulate the effect of the genetic background of medaka on their microbiota, and the association between microbiome diversity and medaka fitness. To do so, we studied two lineages of medaka that were raised under antagonistic size-selective regimes for 10 generations (i.e. the largest or the smallest breeders were removed to mimic fishing-like or natural mortality). In pond mesocosms, the two lineages were subjected to contrasting population density and light intensity (i.e. used as a proxy of primary production, hence resource availability). We observed significant differences in the gut microbiome composition and richness between the two lines, and this effect was mediated by light intensity. Indeed, the bacterial richness of fishing-like medaka (small-breeder line) was reduced by 34% under low-light conditions compared to high-light conditions, while it remained unchanged in natural mortality-selected medaka (large-breeder line). However, the observed changes in bacterial richness did not correlate with changes in growth rate or body condition, possibly due to functional redundancy among the microbial taxa residing in the gut. Given the growing evidence about the gut microbiomes importance to host health, more in-depth studies are required to fully understand the role of the microbiome in size-selected organisms and the possible ecosystem-level consequences.

Published
2023
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14. Size‐dependent eco‐evolutionary feedbacks in harvested systems

Author

Loeuille Nicolas, Edeline Eric, Écologie et santé des écosystèmes (ESE), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
0106 biological sciences, density-dependent selection, Eco evolutionary, media_common.quotation_subject, co-evolution, Biology, Body size, 010603 evolutionary biology, 01 natural sciences, Competition (biology), Predation, 03 medical and health sciences, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, media_common, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, 0303 health sciences, Natural selection, Ecology, [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE], Size dependent, natural selection, harvesting, predation, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, body size, competition
Abstract

International audience; Harvesting may drive body downsizing along with population declines and decreased harvesting yields. These changes are commonly construed as consequences of direct harvest selection, where small-bodied, early-reproducing individuals are immediately favoured. However, together with directly selecting against a large body size, harvesting and body downsizing alter many ecological features, such as competitive and trophic interactions, and thus also indirectly reshape natural selection acting back on body sizes through eco-evolutionary feedback loops (EEFLs). We sketch plausible scenarios of simple EEFLs in which one-dimensional, density-dependent natural selection acts either antagonistically or synergistically with direct harvest selection on body size. Antagonistic feedbacks favour body-size stasis but erode genetic variability and associated body-size evolvability, and may ultimately impair population persistence and recovery. In contrast, synergistic feedbacks drive fast evolution towards smaller body sizes and favour population resilience, but may have far-reaching bottom–up or top–down effects. We illustrate the further complexities resulting from multiple environmental feedbacks using a co-evolving predator–prey pair, in which case outcomes from EEFLs depend not only on population densities, but also on whether prey sit above or below the optimal predator/prey body-size ratio, and whether prey are more or less evolvable than their predators. EEFLs improve our ability to understand and predict nature's response to harvesting, but their integration into the research agenda will require a full consideration of the effects and dynamics of natural selection.

Published
2021

28. Unidirectional response to bidirectional selection on body size II. Quantitative genetics

Author

le Rouzic, Arnaud, Renneville, Clémentine, Millot, Alexis, Agostini, Simon, Carmignac, David, Edeline, Eric, Evolution, génomes, comportement et écologie (EGCE), Institut de Recherche pour le Développement (IRD)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CEREEP-Ecotron Ile de France (UMS 3194), Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Écologie et santé des écosystèmes (ESE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre National de la Recherche Scientifique (CNRS)-Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-AGROCAMPUS OUEST, AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Edeline, Eric, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE] Environmental Sciences, Ecology, animal model, [SDE]Environmental Sciences, artificial selection, G matrix, evolvability, QH540-549.5, bivariate selection, Original Research, asymmetric response, Bayesian mixed models
Abstract

Anticipating the genetic and phenotypic changes induced by natural or artificial selection requires reliable estimates of trait evolvabilities (genetic variances and covariances). However, whether or not multivariate quantitative genetics models are able to predict precisely the evolution of traits of interest, especially fitness‐related, life history traits, remains an open empirical question. Here, we assessed to what extent the response to bivariate artificial selection on both body size and maturity in the medaka Oryzias latipes, a model fish species, fits the theoretical predictions. Three lines (Large, Small, and Control lines) were differentially selected for body length at 75 days of age, conditional on maturity. As maturity and body size were phenotypically correlated, this selection procedure generated a bi‐dimensional selection pattern on two life history traits. After removal of nonheritable trends and noise with a random effect (“animal”) model, the observed selection response did not match the expected bidirectional response. For body size, Large and Control lines responded along selection gradients (larger body size and stasis, respectively), but, surprisingly, the Small did not evolve a smaller body length and remained identical to the Control line throughout the experiment. The magnitude of the empirical response was smaller than the theoretical prediction in both selected directions. For maturity, the response was opposite to the expectation (the Large line evolved late maturity compared to the Control line, while the Small line evolved early maturity, while the opposite pattern was predicted due to the strong positive genetic correlation between both traits). The mismatch between predicted and observed response was substantial and could not be explained by usual sources of uncertainties (including sampling effects, genetic drift, and error in G matrix estimates)., We performed an artificial selection experiment in medaka on two life history traits simultaneously: body size (and thus, growth rate), and maturity. The results differ substantially from the expected response to multivariate selection. In particular, the lack of evolution toward smaller body size suggests that quantitative genetics models may not predict accurately the response to harvesting‐like selection in some fish species.

Published
2020

31. Supplementary material from Ecological ramifications of adaptation to size-selective mortality

Author

Evangelista, Charlotte, Dupeu, Julia, Sandkjenn, Joakim, Pauli, Beatriz Diaz, Herland, Anders, Meriguet, Jacques, Vøllestad, Leif Asbjørn, and Edeline, Eric

Subjects
fungi, reproductive and urinary physiology
Abstract

Size-selective mortality due to harvesting is a threat to numerous exploited species, but how it affects the ecosystem remains largely unexplored. Here, we used a pond mesocosm experiment to assess how evolutionary responses to opposite size-selective mortality interacted with the environment (fish density and light intensity used as a proxy of resource availability) to modulate fish populations, prey community composition and ecosystem functions. We used medaka (Oryzias latipes) previously selected over 10 generations for small size (harvest-like selection; small-breeder line) or large size (large-breeder line), which displayed slow somatic growth and early maturity or fast somatic growth and late maturity, respectively. Large-breeder medaka produced more juveniles, which seemed to grow faster than small-breeder ones but only under high fish density. Additionally, large-breeder medaka had an increased impact on some benthic prey, suggesting expanded diet breadth and/or enhanced foraging abilities. As a consequence, increased light stimulated benthic algae biomass only in presence of large-breeder medaka, which were presumably better at controlling benthic grazers. Aggregated effect sizes at the community and ecosystem levels revealed that the ecological effects of medaka evolution were of similar magnitude than those induced by the environment and fish introduction. These findings indicate the important environmental dependency of evolutionary response to opposite size-selective mortality on higher levels of biological organizations.

Published
2021
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32. Size-dependent harvesting modifies the trophic niche of medaka Oryzias latipes in a mesocosm experiment

Author

Evangelista, C, Dupeu, J, Sandkjenn, J, Diaz Pauli, B, Herland, A, Meriguet, J, Vøllestad, L, Edeline, Eric, Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO)-Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), Institut d'écologie et des sciences de l'environnement de Paris (iEES), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA), Institut de biologie de l'Ecole Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Écologie et santé des écosystèmes (ESE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), European Society for Evolutionary Biology, Edeline, Eric, Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Paris (ENS Paris), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-AGROCAMPUS OUEST, AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

33. Selection for small size affects the pace-of-life syndrome in medaka impacting the invertebrate community

Author

Diaz-Pauli, Beatriz, Edeline, Eric, Evangelista, Charlotte, Edeline, Eric, Écologie et santé des écosystèmes (ESE), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and European Society for Evolutionary Biology

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

35. Size-dependent eco-evolutionary feedback loops in exploited ecosystems

Author

Edeline, Eric, Loeuille, Nicolas, Écologie et santé des écosystèmes (ESE), AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
[SDV]Life Sciences [q-bio], [SDE]Environmental Sciences
Abstract

Current empirical observations largely suggest a body downsizing in response to harvesting, associated with population declines and decreased harvesting yields. These changes are often construed as direct consequences of harvest selection, where smaller-bodied, early reproducing individuals are immediately favoured. Harvesting and evolution of body size however alter many ecological aspects, affecting for instance competitive and trophic interactions. Such changes reshape the fitness landscape thereby altering the subsequent evolution of body size. Predicting these changes in fitness landscapes, and from there the productivity and dynamics of harvested populations, requires accounting for a constant interplay between ecological and evolutionary changes termed eco-evolutionary feedback loops (EEFLs). We analyze scenarios under which EEFLs acting at the population or community levels either oppose or magnify harvest-induced body downsizing. Opposing EEFLs favour body-size stasis but erode genetic variability and associated body-size evolvability, and may ultimately impair population persistence. In contrast, synergistic EEFLs initially favour population persistence and preserve body-size evolvability, but drive fast evolution towards smaller body sizes and increase the probability for trophic feedbacks that may ultimately lead to population collapse. EEFLs imply that reduced ecological effects of harvesting also produce smaller evolutionary changes, and thus pave the way towards a convergence of the ecological and evolutionary perspectives on harvest management. We advocate for a better consideration of natural selection which effects, we believe, should be integrated among default a priori assumption in studies of harvested populations.

Published
2020
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41. Size-dependent eco-evolutionary feedback loops in harvested systems

Author

Edeline, Eric, Loeuille, Nicolas, Écologie et santé des écosystèmes (ESE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut d'écologie et des sciences de l'environnement de Paris (iEES), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-AGROCAMPUS OUEST, Edeline, Eric, AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

43. Anthropogenic selection along directions of most evolutionary resistance

Author

Renneville, Clémentine, Millot, Alexis, Agostini, Simon, Carmignac, David, Maugars, Gersende, Dufour, Sylvie, Le Rouzic, Arnaud, Edeline, Eric, Institut d'écologie et des sciences de l'environnement de Paris (IEES), Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), CEREEP-Ecotron Ile de France (UMS 3194), Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL), Biogéochimie et écologie des milieux continentaux (Bioemco), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Évolution, génomes, comportement et écologie (EGCE), Université Paris-Sud - Paris 11 (UP11)-IRD-Centre National de la Recherche Scientifique (CNRS), Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre National de la Recherche Scientifique (CNRS)-Département de Biologie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-IRD-Université Paris-Sud - Paris 11 (UP11), Institut d'écologie et des sciences de l'environnement de Paris (IEES (UMR_7618 / UMR_D_242 / UMR_A_1392 / UM_113) ), Institut National de la Recherche Agronomique (INRA)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Evolution, génomes, comportement et écologie (EGCE), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS), and PSL Research University (PSL)

Subjects
[SDV.EE]Life Sciences [q-bio]/Ecology, environment, [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE], [SDV]Life Sciences [q-bio]
Abstract

Anthropogenic perturbations such as harvesting often select against a large body size, and are predictedto induce rapid evolution towards smaller body sizes and earlier maturation. However, the evolvabilityof body size and size-correlated traits remains seldom evaluated in wild populations. Here, we use alaboratory experiment over 6 generations to measure the ability of wild-caught medaka fish (Oryziaslatipes) to evolve in response to bidirectional size-dependent selection mimicking opposite harvestregimes. Specifically, we imposed selection against a small body size (Large line), against a large bodysize (Small line) or random selection (Control line), and measured correlated responses across multiplephenotypic, life-history and endocrine traits. As expected, the Large line evolved faster somatic growthand delayed maturation, but also evolved smaller body sizes at hatch, with no change in average levelsof pituitary gene expressions of luteinizing, follicle-stimulating or growth (GH) hormones. In contrast,the Small medaka line was unable to evolve smaller body sizes or earlier maturation, but showedmarginally-significant signs of increased reproductive investment (age effect on maturity probability,larger egg sizes, elevated pituitary GH production). Natural selection on medaka body size was tooweak to significantly hinder the effect of artificial selection, indicating that the asymmetric body-sizeresponse to size-dependent selection reflected an asymmetry in body-size evolvability. Our resultsshow that trait evolvability may be contingent upon the direction of selection, and that a detailedknowledge of trait evolutionary potential is needed to forecast population response to anthropogenicchange.

Published
2019

44. Density-dependent selection mediates harvest-induced evolution

Author

Bouffet-Halle, Alix, Mériguet, Jacques, Carmignac, David, Agostini, Simon, Millot, Alexis, Perret, Samuel, Motard, Eric, Decenciere, Beatriz, and Edeline, Eric

Abstract

Harvesting has been demonstrated to cause rapid, yield-decreasing trait change towards slower somatic growth and earlier maturation in wild populations. These changes are largely considered to result from direct, density-independent harvest selection on traits. Here, we show that exact same trait changes may also indirectly result from a harvest-induced relaxation of density-dependent ( K ) natural selection for faster growth and delayed maturation. We exposed 12 pond populations of medaka fish ( Oryzias latipes ) to contrasted size-selective harvesting during 5 years, and show that harvesting effectively changed juvenile natural mortality from density-dependent to density- in dependent. We then laboratory-reared medaka progeny under contrasted food levels mimicking the environmental effects of a harvest-induced density gradient. Interaction between past harvest regime and present food environment on progeny traits revealed that harvest-induced trait changes in medaka resulted from selection in a low-food environment only, i.e., were driven by relaxed K -selection only, not by direct harvest selection. Feeding trials further demonstrated that trait changes were associated with reorganizations in rates of food acquisition, assimilation and allocation that were contingent upon the food environments. This is the first study to demonstrate that harvesting can induce undesirable distortions of natural selection that impair productivity traits. We conclude that sustaining harvesting yields over extended time scales requires a preservation of high population densities. Significance statement Fisheries management often opposes a density-dependent approach which prioritize the preservation of high population densities, and an evolutionary approach which consider that alleviating change towards smaller body sizes is paramount to the sustainability of harvesting. The evolutionary approach consider harvest-induced body downsizing to be density-independent, i.e., to result only from direct harvest selection against large-bodied individuals. Here, we show instead that harvest-induced body downsizing may be density-dependent because, by decreasing population density, fishing relaxes natural, density-dependent selection for large-bodied individuals. Therefore, preserving population numbers and alleviating body downsizing in harvested populations are not independent lines of management, but are in fact two necessary and complementary routes to reaching the same management objectives.

Published
2019
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45. Additional file 1: of Selection for small body size favours contrasting sex-specific life histories, boldness and feeding in medaka, Oryzias latipes

Author

Pauli, Beatriz Diaz, Garric, Sarah, Evangelista, Charlotte, L. VøLlestad, and Edeline, Eric

Abstract

Detailed experimental set up for the behavioural assessment. Behavioural repeatability (Table S1) and effect of experimental conditions on male (Table S2) and female (Table S3) behaviours. (DOCX 32 kb)

Published
2019
Full Text
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46. FlowCAM: numérisation à haut débit des objets microscopiques

Author

EDELINE, Eric, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV]Life Sciences [q-bio]
Published
2018

47. Harvest-induced evolution and the medaka

Author

EDELINE, Eric, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV]Life Sciences [q-bio]
Published
2018

50. Production, density-dependence and cryptic evolution in harvested populations

Author

EDELINE, Eric, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV]Life Sciences [q-bio]
Published
2017

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