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Durkee LF, Olazcuaga L, Melbourne BA, Hufbauer RA. Immigration delays but does not prevent adaptation following environmental change: experimental evidence. J Evol Biol 2024; 37:665-676. [PMID: 38466641 DOI: 10.1093/jeb/voae031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 02/18/2024] [Accepted: 03/29/2024] [Indexed: 03/13/2024]
Abstract
In today's rapidly changing world, it is critical to examine how animal populations will respond to severe environmental change. Following events such as pollution or deforestation that cause populations to decline, extinction will occur unless populations can adapt in response to natural selection, a process called evolutionary rescue. Theory predicts that immigration can delay extinction and provide novel genetic material that can prevent inbreeding depression and facilitate adaptation. However, when potential source populations have not experienced the new environment before (i.e., are naive), immigration can counteract selection and constrain adaptation. This study evaluated the effects of immigration of naive individuals on evolutionary rescue using the red flour beetle, Tribolium castaneum, as a model system. Small populations were exposed to a challenging environment, and 3 immigration rates (0, 1, or 5 migrants per generation) were implemented with migrants from a benign environment. Following an initial decline in population size across all treatments, populations receiving no immigration gained a higher growth rate one generation earlier than those with immigration, illustrating the constraining effects of immigration on adaptation. After 7 generations, a reciprocal transplant experiment found evidence for adaptation regardless of immigration rate. Thus, while the immigration of naive individuals briefly delayed adaptation, it did not increase extinction risk or prevent adaptation following environmental change.
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Affiliation(s)
- Lily F Durkee
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, United States
| | - Laure Olazcuaga
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, United States
- Centre National de la Recherche Scientifique (CNRS), Station d'Ecologie Théorique et Expérimentale (UAR2029), Moulis, France
| | - Brett A Melbourne
- Department of Ecology & Evolutionary Biology, University of Colorado, Boulder, CO, United States
| | - Ruth A Hufbauer
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, United States
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Czuppon P, Blanquart F, Uecker H, Débarre F. The Effect of Habitat Choice on Evolutionary Rescue in Subdivided Populations. Am Nat 2021; 197:625-643. [PMID: 33989144 DOI: 10.1086/714034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractEvolutionary rescue is the process by which a population, in response to an environmental change, successfully avoids extinction through adaptation. In spatially structured environments, dispersal can affect the probability of rescue. Here, we model an environment consisting of patches that degrade one after another, and we investigate the probability of rescue by a mutant adapted to the degraded habitat. We focus on the effects of dispersal and of immigration biases. We identify up to three regions delimiting the effect of dispersal on the probability of evolutionary rescue: (i) starting from low dispersal rates, the probability of rescue increases with dispersal; (ii) at intermediate dispersal rates, it decreases; and (iii) at large dispersal rates, it increases again with dispersal, except if mutants are too counterselected in not-yet-degraded patches. The probability of rescue is generally highest when mutant and wild-type individuals preferentially immigrate into patches that have already undergone environmental change. Additionally, we find that mutants that will eventually rescue the population most likely first appear in nondegraded patches. Overall, our results show that habitat choice, compared with the often-studied unbiased immigration scheme, can substantially alter the dynamics of population survival and adaptation to new environments.
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Kisdi É, Weigang HC, Gyllenberg M. The Evolution of Immigration Strategies Facilitates Niche Expansion by Divergent Adaptation in a Structured Metapopulation Model. Am Nat 2019; 195:1-15. [PMID: 31868542 DOI: 10.1086/706258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Local adaptation and habitat choice are two key factors that control the distribution and diversification of species. Here we model habitat choice mechanistically as the outcome of dispersal with nonrandom immigration. We consider a structured metapopulation with a continuous distribution of patch types and determine the evolutionarily stable immigration strategy as the function linking patch type to the probability of settling in the patch on encounter. We uncover a novel mechanism whereby coexisting strains that only slightly differ in their local adaptation trait can evolve substantially different immigration strategies. In turn, different habitat use selects for divergent adaptations in the two strains. We propose that the joint evolution of immigration and local adaptation can facilitate diversification and discuss our results in the light of niche conservatism versus niche expansion.
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Jacob S, Laurent E, Morel‐Journel T, Schtickzelle N. Fragmentation and the context‐dependence of dispersal syndromes: matrix harshness modifies resident‐disperser phenotypic differences in microcosms. OIKOS 2019. [DOI: 10.1111/oik.06857] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Staffan Jacob
- Earth and Life Institute, Biodiversity Research Centre, Univ. catholique de Louvain Croix du Sud 4, L7‐07‐04 BE‐1348 Louvain‐la‐Neuve Belgium
- Station d'Ecologie Théorique et Expérimentale, UMR 5321 CNRS/UPS 2 route du CNRS FR‐09200 Moulis France
| | - Estelle Laurent
- Earth and Life Institute, Biodiversity Research Centre, Univ. catholique de Louvain Croix du Sud 4, L7‐07‐04 BE‐1348 Louvain‐la‐Neuve Belgium
| | - Thibaut Morel‐Journel
- Earth and Life Institute, Biodiversity Research Centre, Univ. catholique de Louvain Croix du Sud 4, L7‐07‐04 BE‐1348 Louvain‐la‐Neuve Belgium
| | - Nicolas Schtickzelle
- Earth and Life Institute, Biodiversity Research Centre, Univ. catholique de Louvain Croix du Sud 4, L7‐07‐04 BE‐1348 Louvain‐la‐Neuve Belgium
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Jacob S, Chaine AS, Huet M, Clobert J, Legrand D. Variability in Dispersal Syndromes Is a Key Driver of Metapopulation Dynamics in Experimental Microcosms. Am Nat 2019; 194:613-626. [PMID: 31613674 DOI: 10.1086/705410] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Evolutionary ecology studies have increasingly focused on the impact of intraspecific variability on population processes. However, the role such variation plays in the dynamics of spatially structured populations and how it interacts with environmental changes remains unclear. Here we experimentally quantify the relative importance of intraspecific variability in dispersal-related traits and spatiotemporal variability of environmental conditions for the dynamics of two-patch metapopulations using clonal genotypes of a ciliate in connected microcosms. We demonstrate that in our simple two-patch microcosms, differences among genotypes are at least as important as spatiotemporal variability of resources for metapopulation dynamics. Furthermore, we show that an important proportion of this effect results from variability of dispersal syndromes. These syndromes can therefore be as important for metapopulation dynamics as spatiotemporal variability of environmental conditions. This study demonstrates that intraspecific variability in dispersal syndromes can be key in the functioning of metapopulations facing environmental changes.
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Mishra A, Tung S, Shreenidhi PM, Aamir Sadiq M, Shree Sruti VR, Chakraborty PP, Dey S. Sex differences in dispersal syndrome are modulated by environment and evolution. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0428. [PMID: 30150226 DOI: 10.1098/rstb.2017.0428] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2018] [Indexed: 11/12/2022] Open
Abstract
Dispersal syndromes (i.e. suites of phenotypic correlates of dispersal) are potentially important determinants of local adaptation in populations. Species that exhibit sexual dimorphism in their life history or behaviour may exhibit sex-specific differences in their dispersal syndromes. Unfortunately, there is little empirical evidence of sex differences in dispersal syndromes and how they respond to environmental change or dispersal evolution. We investigated these issues using two same-generation studies and a long-term (greater than 70 generations) selection experiment on laboratory populations of Drosophila melanogaster There was a marked difference between the dispersal syndromes of males and females, the extent of which was modulated by nutrition availability. Moreover, dispersal evolution via spatial sorting reversed the direction of dispersal×sex interaction in one trait (desiccation resistance), while eliminating the sex difference in another trait (body size). Thus, we show that sex differences obtained through same-generation trait-associations ('ecological dispersal syndromes') are probably environment-dependent. Moreover, even under constant environments, they are not good predictors of the sex differences in 'evolutionary dispersal syndrome' (i.e. trait-associations shaped during dispersal evolution). Our findings have implications for local adaptation in the context of sex-biased dispersal and habitat-matching, as well as for the use of dispersal syndromes as a proxy of dispersal.This article is part of the theme issue 'Linking local adaptation with the evolution of sex differences'.
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Affiliation(s)
- Abhishek Mishra
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - Sudipta Tung
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - P M Shreenidhi
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - Mohammed Aamir Sadiq
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - V R Shree Sruti
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - Partha Pratim Chakraborty
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
| | - Sutirth Dey
- Population Biology Laboratory, Biology Division, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pune, Maharashtra 411 008, India
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Pellerin F, Cote J, Bestion E, Aguilée R. Matching habitat choice promotes species persistence under climate change. OIKOS 2018. [DOI: 10.1111/oik.05309] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Félix Pellerin
- UMR5174 (Laboratoire Evolution et Diversité Biologique), CNRS, Univ; Toulouse III Paul Sabatier, 118 route de Narbonne FR-31062 Toulouse France
| | - Julien Cote
- UMR5174 (Laboratoire Evolution et Diversité Biologique), CNRS, Univ; Toulouse III Paul Sabatier, 118 route de Narbonne FR-31062 Toulouse France
| | - Elvire Bestion
- UMR5174 (Laboratoire Evolution et Diversité Biologique), CNRS, Univ; Toulouse III Paul Sabatier, 118 route de Narbonne FR-31062 Toulouse France
- Environment and Sustainability Inst., College of Life and Environmental Sciences, Univ. of Exeter; Penryn Cornwall UK
| | - Robin Aguilée
- UMR5174 (Laboratoire Evolution et Diversité Biologique), CNRS, Univ; Toulouse III Paul Sabatier, 118 route de Narbonne FR-31062 Toulouse France
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Scheiner SM. Habitat Choice and Temporal Variation Alter the Balance between Adaptation by Genetic Differentiation, a Jack-of-All-Trades Strategy, and Phenotypic Plasticity. Am Nat 2016; 187:633-46. [PMID: 27104995 DOI: 10.1086/685812] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Confronted with variable environments, species adapt in several ways, including genetic differentiation, a jack-of-all-trades strategy, or phenotypic plasticity. Adaptive habitat choice favors genetic differentiation and local adaptation over a generalist, jack-of-all-trades strategy. Models predict that, absent plasticity costs, variable environments generally favor phenotypic plasticity over genetic differentiation and being a jack-of-all-trades generalist. It is unknown how habitat choice might affect the evolution of plasticity. Using an individual-based simulation model, I explored the interaction of choice and plasticity. With only spatial variation, habitat choice promotes genetic differentiation over a jack-of-all-trades strategy or phenotypic plasticity. In the absence of plasticity, temporal variation favors a jack-of-all-trades strategy over choice-mediated genetic differentiation; when plasticity is an option, it is favored. This occurs because habitat choice creates a feedback between genetic differentiation and dispersal rates. As demes become better adapted to their local environments, the effective dispersal rate decreases, because more individuals have very high fitness and so choose not to disperse, reinforcing local stabilizing selection and negating selection for plasticity. Temporal variation breaks that feedback. These results point to a potential data paradox: systems with habitat choice may have the lowest actual movement rates. The potential for adaptive habitat choice may be very common, but its existence may reduce observed dispersal rates enough that we do not recognize systems where it may be present, warranting further exploration of likely systems.
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