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Longcamp A, Draghi J. Evolutionary rescue via niche construction: Infrequent construction can prevent post-invasion extinction. Theor Popul Biol 2023; 153:37-49. [PMID: 37328113 DOI: 10.1016/j.tpb.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/18/2023]
Abstract
A population experiencing habitat loss can avoid extinction by undergoing genetic adaptation-a process known as evolutionary rescue. Here we analytically approximate the probability of evolutionary rescue via a niche-constructing mutation that allows carriers to convert a novel, unfavorable reproductive habitat to a favorable state at a cost to their fecundity. We analyze competition between mutants and non-niche-constructing wild types, who ultimately require the constructed habitats to reproduce. We find that over-exploitation of the constructed habitats by wild types can generate damped oscillations in population size shortly after mutant invasion, thereby decreasing the probability of rescue. Such post-invasion extinction is less probable when construction is infrequent, habitat loss is common, the reproductive environment is large, or the population's carrying capacity is small. Under these conditions, wild types are less likely to encounter the constructed habitats and, consequently, mutants are more likely to fix. These results suggest that, without a mechanism that deters wild type inheritance of the constructed habitats, a population undergoing rescue via niche construction may remain prone to short-timescale extinction despite successful mutant invasion.
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Affiliation(s)
- Alexander Longcamp
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, United States of America.
| | - Jeremy Draghi
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, United States of America
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2
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Torres E, García-Fernández A, Iñigo D, Lara-Romero C, Morente-López J, Prieto-Benítez S, Rubio Teso ML, Iriondo JM. Facilitated Adaptation as A Conservation Tool in the Present Climate Change Context: A Methodological Guide. PLANTS (BASEL, SWITZERLAND) 2023; 12:1258. [PMID: 36986946 PMCID: PMC10053585 DOI: 10.3390/plants12061258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/04/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Climate change poses a novel threat to biodiversity that urgently requires the development of adequate conservation strategies. Living organisms respond to environmental change by migrating to locations where their ecological niche is preserved or by adapting to the new environment. While the first response has been used to develop, discuss and implement the strategy of assisted migration, facilitated adaptation is only beginning to be considered as a potential approach. Here, we present a review of the conceptual framework for facilitated adaptation, integrating advances and methodologies from different disciplines. Briefly, facilitated adaptation involves a population reinforcement that introduces beneficial alleles to enable the evolutionary adaptation of a focal population to pressing environmental conditions. To this purpose, we propose two methodological approaches. The first one (called pre-existing adaptation approach) is based on using pre-adapted genotypes existing in the focal population, in other populations, or even in closely related species. The second approach (called de novo adaptation approach) aims to generate new pre-adapted genotypes from the diversity present in the species through artificial selection. For each approach, we present a stage-by-stage procedure, with some techniques that can be used for its implementation. The associated risks and difficulties of each approach are also discussed.
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Affiliation(s)
- Elena Torres
- Departamento de Biotecnología-Biología Vegetal, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Alfredo García-Fernández
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
| | - Diana Iñigo
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
| | - Carlos Lara-Romero
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
| | - Javier Morente-López
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
- Grupo de Investigación de Ecología y Evolución en Islas, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), 38206 Tenerife, Spain
| | - Samuel Prieto-Benítez
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
- Ecotoxicology of Air Pollution, Environmental Department, CIEMAT, 28040 Madrid, Spain
| | - María Luisa Rubio Teso
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
| | - José M. Iriondo
- Grupo de Ecología Evolutiva (ECOEVO), Área de Biodiversidad y Conservación, Departamento de Biología, Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, 28933 Móstoles, Spain
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3
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Grummer JA, Booker TR, Matthey-Doret R, Nietlisbach P, Thomaz AT, Whitlock MC. The immediate costs and long-term benefits of assisted gene flow in large populations. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2022; 36:e13911. [PMID: 35390208 DOI: 10.1111/cobi.13911] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 12/11/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
With the genetic health of many plant and animal populations deteriorating due to climate change outpacing adaptation, interventions, such as assisted gene flow (AGF), may provide genetic variation necessary for populations to adapt to climate change. We ran genetic simulations to mimic different AGF scenarios in large populations and measured their outcomes on population-level fitness to determine circumstances in which it is worthwhile to perform AGF. In the absence of inbreeding depression, AGF was beneficial within a few generations only when introduced genotypes had much higher fitness than local individuals and traits affecting fitness were controlled by a few genes of large effect. AGF was harmful over short periods (e.g., first ∼10-20 generations) if there was strong outbreeding depression or introduced deleterious genetic variation. When the adaptive trait was controlled by many loci of small effect, the benefits of AGF took over 10 generations to realize-potentially too long for most climate-related management scenarios. The genomic integrity of the recipient population typically remained intact following AGF; the amount of genetic material from the donor population usually constituted no more of the recipient population's genome than the fraction of the population introduced. Significant genomic turnover (e.g., >50% replacement) only occurred when the selective advantage of the adaptive trait and translocation fraction were extremely high. Our results will be useful when adaptive management is used to maintain the genetic health and productivity of large populations under climate change.
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Affiliation(s)
- Jared A Grummer
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Tom R Booker
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Remi Matthey-Doret
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
- Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Pirmin Nietlisbach
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
- School of Biological Sciences, Illinois State University, Normal, Illinois, USA
| | - Andréa T Thomaz
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
- Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Michael C Whitlock
- Biodiversity Research Centre and Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
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Vedder D, Lens L, Martin CA, Pellikka P, Adhikari H, Heiskanen J, Engler JO, Sarmento Cabral J. Hybridization may aid evolutionary rescue of an endangered East African passerine. Evol Appl 2022; 15:1177-1188. [PMID: 35899253 PMCID: PMC9309464 DOI: 10.1111/eva.13440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/26/2022] [Accepted: 06/08/2022] [Indexed: 11/29/2022] Open
Abstract
Introgressive hybridization is a process that enables gene flow across species barriers through the backcrossing of hybrids into a parent population. This may make genetic material, potentially including relevant environmental adaptations, rapidly available in a gene pool. Consequently, it has been postulated to be an important mechanism for enabling evolutionary rescue, that is the recovery of threatened populations through rapid evolutionary adaptation to novel environments. However, predicting the likelihood of such evolutionary rescue for individual species remains challenging. Here, we use the example of Zosterops silvanus, an endangered East African highland bird species suffering from severe habitat loss and fragmentation, to investigate whether hybridization with its congener Zosterops flavilateralis might enable evolutionary rescue of its Taita Hills population. To do so, we employ an empirically parameterized individual-based model to simulate the species' behaviour, physiology and genetics. We test the population's response to different assumptions of mating behaviour and multiple scenarios of habitat change. We show that as long as hybridization does take place, evolutionary rescue of Z. silvanus is likely. Intermediate hybridization rates enable the greatest long-term population growth, due to trade-offs between adaptive and maladaptive introgressed alleles. Habitat change did not have a strong effect on population growth rates, as Z. silvanus is a strong disperser and landscape configuration is therefore not the limiting factor for hybridization. Our results show that targeted gene flow may be a promising avenue to help accelerate the adaptation of endangered species to novel environments, and demonstrate how to combine empirical research and mechanistic modelling to deliver species-specific predictions for conservation planning.
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Affiliation(s)
- Daniel Vedder
- Ecosystem Modelling Group, Center for Computational and Theoretical BiologyUniversity of WürzburgWürzburgGermany
- Department of Ecosystem ServicesHelmholtz Centre for Environmental Research – UFZLeipzigGermany
- Institute of BiodiversityFriedrich Schiller University JenaJenaGermany
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
| | - Luc Lens
- Terrestrial Ecology Unit, Biology DepartmentGhent UniversityGhentBelgium
| | - Claudia A. Martin
- Terrestrial Ecology Unit, Biology DepartmentGhent UniversityGhentBelgium
| | - Petri Pellikka
- Department of Geosciences and GeographyUniversity of HelsinkiHelsinkiFinland
- State Key Laboratory for Information Engineering in Surveying, Mapping and Remote SensingWuhan UniversityWuhanChina
| | - Hari Adhikari
- Department of Geosciences and GeographyUniversity of HelsinkiHelsinkiFinland
| | - Janne Heiskanen
- Department of Geosciences and GeographyUniversity of HelsinkiHelsinkiFinland
| | - Jan O. Engler
- Terrestrial Ecology Unit, Biology DepartmentGhent UniversityGhentBelgium
- Landscape Research, Department of GeographyGhent UniversityGhentBelgium
- Computational Landscape EcologyTechnische Universität DresdenDresdenGermany
| | - Juliano Sarmento Cabral
- Ecosystem Modelling Group, Center for Computational and Theoretical BiologyUniversity of WürzburgWürzburgGermany
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5
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Tomasini M, Peischl S. The role of spatial structure in multi-deme models of evolutionary rescue. J Evol Biol 2022; 35:986-1001. [PMID: 35704340 DOI: 10.1111/jeb.14018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 04/07/2022] [Accepted: 04/13/2022] [Indexed: 11/30/2022]
Abstract
Genetic variation and population sizes are critical factors for successful adaptation to novel environmental conditions. Gene flow between sub-populations is a potent mechanism to provide such variation and can hence facilitate adaptation, for instance by increasing genetic variation or via the introduction of beneficial variants. On the other hand, if gene flow between different habitats is too strong, locally beneficial alleles may not be able to establish permanently. In the context of evolutionary rescue, intermediate levels of gene flow are therefore often optimal for maximizing a species chance for survival in metapopulations without spatial structure. To which extent and under which conditions gene flow facilitates or hinders evolutionary rescue in spatially structured populations remains unresolved. We address this question by studying the differences between evolutionary rescue in the island model and in the stepping stone model in a gradually deteriorating habitat. We show that evolutionary rescue is modulated by the rate of gene flow between different habitats, which in turn depends strongly on the spatial structure and the pattern of environmental deterioration. We use these insights to show that in many cases spatially structured models can be translated into a simpler island model using an appropriately scaled effective migration rate.
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Affiliation(s)
- Matteo Tomasini
- Interfaculty Bioinformatics Unit, University of Bern, Bern, Switzerland.,Computational and Molecular Population Genetics Laboratory, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.,Swiss Institute for Bioinformatics, Lausanne, Switzerland
| | - Stephan Peischl
- Interfaculty Bioinformatics Unit, University of Bern, Bern, Switzerland.,Swiss Institute for Bioinformatics, Lausanne, Switzerland
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6
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Techer MA, Roberts JMK, Cartwright RA, Mikheyev AS. The first steps toward a global pandemic: Reconstructing the demographic history of parasite host switches in its native range. Mol Ecol 2022; 31:1358-1374. [PMID: 34882860 PMCID: PMC11105409 DOI: 10.1111/mec.16322] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/23/2021] [Accepted: 11/29/2021] [Indexed: 12/14/2022]
Abstract
Host switching allows parasites to expand their niches. However, successful switching may require suites of adaptations and also may decrease performance on the old host. As a result, reductions in gene flow accompany many host switches, driving speciation. Because host switches tend to be rapid, it is difficult to study them in real-time, and their demographic parameters remain poorly understood. As a result, fundamental factors that control subsequent parasite evolution, such as the size of the switching population or the extent of immigration from the original host, remain largely unknown. To shed light on the host switching process, we explored how host switches occur in independent host shifts by two ectoparasitic honey bee mites (Varroa destructor and V. jacobsoni). Both switched to the western honey bee (Apis mellifera) after being brought into contact with their ancestral host (Apis cerana), ~70 and ~12 years ago, respectively. Varroa destructor subsequently caused worldwide collapses of honey bee populations. Using whole-genome sequencing on 63 mites collected in their native ranges from both the ancestral and novel hosts, we were able to reconstruct the known temporal dynamics of the switch. We further found multiple previously undiscovered mitochondrial lineages on the novel host, along with the genetic equivalent of tens of individuals that were involved in the initial host switch. Despite being greatly reduced, some gene flow remains between mites adapted to different hosts. Our findings suggest that while reproductive isolation may facilitate the fixation of traits beneficial for exploiting the new host, ongoing genetic exchange may allow genetic amelioration of inbreeding effects.
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Affiliation(s)
- Maeva A Techer
- Okinawa Institute of Science and Technology, Okinawa, Japan
| | - John M K Roberts
- Commonwealth Scientific & Industrial Research Organisation, Canberra, Australian Capital Territory, Australia
| | - Reed A Cartwright
- The Biodesign Institute, Arizona State University, Tempe, Arizona, USA
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Alexander S Mikheyev
- Okinawa Institute of Science and Technology, Okinawa, Japan
- Australian National University, Canberra, Australian Capital Territory, Australia
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7
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Rodríguez RL, Wood TK, Stearns FW, Snyder RL, Tilmon KJ, Cast MS, Hunt RE, Cocroft RB. Adaptation without Specialization Early in a Host Shift. Am Nat 2021; 198:333-346. [PMID: 34403320 DOI: 10.1086/715629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractStudents of speciation debate the role of performance trade-offs across different environments early in speciation. We tested for early performance trade-offs with a host shift experiment using a member of the Enchenopa binotata species complex of treehoppers (Hemiptera: Membracidae). In this clade of plant-feeding insects, different species live on different host plants and exhibit strong behavioral and physiological host specialization. After five generations, the experimental host shifts resulted either in no adaptation or in adaptation without specialization. The latter result was more likely in sympatry; in allopatry, populations on novel host plants were more likely to become extinct. We conclude that in the early stages of speciation, adaptation to novel host plants does not necessarily bring about performance trade-offs on ancestral environments. Adaptation may be facilitated rather than hindered by gene flow, which prevents extinction. Additional causes of specialization and assortative mating may be required if colonization of novel environments is to result in speciation.
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8
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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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9
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de Pedro M, Riba M, González-Martínez SC, Seoane P, Bautista R, Claros MG, Mayol M. Demography, genetic diversity and expansion load in the colonizing species Leontodon longirostris (Asteraceae) throughout its native range. Mol Ecol 2021; 30:1190-1205. [PMID: 33452714 DOI: 10.1111/mec.15802] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/12/2020] [Accepted: 01/08/2021] [Indexed: 12/25/2022]
Abstract
Unravelling the evolutionary processes underlying range expansions is fundamental to understand the distribution of organisms, as well as to predict their future responses to environmental change. Predictions for range expansions include a loss of genetic diversity and an accumulation of deleterious alleles along the expansion axis, which can decrease fitness at the range-front (expansion load). In plants, empirical studies supporting expansion load are scarce, and its effects remain to be tested outside a few model species. Leontodon longirostris is a colonizing Asteraceae with a widespread distribution in the Western Mediterranean, providing a particularly interesting system to gain insight into the factors that can enhance or mitigate expansion load. In this study, we produced a first genome draft for the species, covering 418 Mbp (~53% of the genome). Although incomplete, this draft was suitable to design a targeted sequencing of ~1.5 Mbp in 238 L. longirostris plants from 21 populations distributed along putative colonization routes in the Iberian Peninsula. Inferred demographic history supports a range expansion from southern Iberia around 40,000 years ago, reaching northern Iberia around 25,000 years ago. The expansion was accompanied by a loss of genetic diversity and a significant increase in the proportion of putatively deleterious mutations. However, levels of expansion load in L. longirostris were smaller than those found in other plant species, which can be explained, at least partially, by its high dispersal ability, the self-incompatible mating system, and the fact that the expansion occurred along a strong environmental cline.
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Affiliation(s)
| | - Miquel Riba
- CREAF, Cerdanyola del Vallès, Spain.,Univ. Autònoma Barcelona, Cerdanyola del Vallès, Spain
| | | | - Pedro Seoane
- Department of Molecular Biology and Biochemistry, Universidad de Málaga, and Institute for Mediterranean and Subtropical Horticulture (IHSM-CSIC-UMA), Málaga, Spain.,CIBER de Enfermedades Raras (CIBERER), Málaga, Spain.,Institute of Biomedical Research in Malaga (IBIMA), IBIMA-RARE, Málaga, Spain
| | - Rocío Bautista
- Institute of Biomedical Research in Malaga (IBIMA), IBIMA-RARE, Málaga, Spain.,Andalusian Platform for Bioinformatics-SCBI, Universidad de Málaga, Málaga, Spain
| | - Manuel Gonzalo Claros
- Department of Molecular Biology and Biochemistry, Universidad de Málaga, and Institute for Mediterranean and Subtropical Horticulture (IHSM-CSIC-UMA), Málaga, Spain.,CIBER de Enfermedades Raras (CIBERER), Málaga, Spain.,Institute of Biomedical Research in Malaga (IBIMA), IBIMA-RARE, Málaga, Spain.,Andalusian Platform for Bioinformatics-SCBI, Universidad de Málaga, Málaga, Spain.,Institute for Mediterranean and Subtropical Horticulture "La Mayora" (IHSM-UMA-CSIC), Málaga, Spain
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10
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Labonne J, Manicki A, Chevalier L, Tétillon M, Guéraud F, Hendry AP. Using Reciprocal Transplants to Assess Local Adaptation, Genetic Rescue, and Sexual Selection in Newly Established Populations. Genes (Basel) 2020; 12:genes12010005. [PMID: 33374534 PMCID: PMC7822186 DOI: 10.3390/genes12010005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/14/2020] [Accepted: 12/18/2020] [Indexed: 12/11/2022] Open
Abstract
Small populations establishing on colonization fronts have to adapt to novel environments with limited genetic variation. The pace at which they can adapt, and the influence of genetic variation on their success, are key questions for understanding intraspecific diversity. To investigate these topics, we performed a reciprocal transplant experiment between two recently founded populations of brown trout in the sub-Antarctic Kerguelen Islands. Using individual tagging and genetic assignment methods, we tracked the fitness of local and foreign individuals, as well as the fitness of their offspring over two generations. In both populations, although not to the same extent, gene flow occurred between local and foreign gene pools. In both cases, however, we failed to detect obvious footprints of local adaptation (which should limit gene flow) and only weak support for genetic rescue (which should enhance gene flow). In the population where gene flow from foreign individuals was low, no clear differences were observed between the fitness of local, foreign, and F1 hybrid individuals. In the population where gene flow was high, foreign individuals were successful due to high mating success rather than high survival, and F1 hybrids had the same fitness as pure local offspring. These results suggest the importance of considering sexual selection, rather than just local adaptation and genetic rescue, when evaluating the determinants of success in small and recently founded populations.
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Affiliation(s)
- Jacques Labonne
- Université de Pau et des Pays de l’Adour, UMR INRAE-UPPA, Ecobiop, FR-64310 Saint-Pée sur Nivelle, France; (A.M.); (L.C.); (M.T.); (F.G.)
- Correspondence: (J.L.); (A.P.H.)
| | - Aurélie Manicki
- Université de Pau et des Pays de l’Adour, UMR INRAE-UPPA, Ecobiop, FR-64310 Saint-Pée sur Nivelle, France; (A.M.); (L.C.); (M.T.); (F.G.)
| | - Louise Chevalier
- Université de Pau et des Pays de l’Adour, UMR INRAE-UPPA, Ecobiop, FR-64310 Saint-Pée sur Nivelle, France; (A.M.); (L.C.); (M.T.); (F.G.)
| | - Marin Tétillon
- Université de Pau et des Pays de l’Adour, UMR INRAE-UPPA, Ecobiop, FR-64310 Saint-Pée sur Nivelle, France; (A.M.); (L.C.); (M.T.); (F.G.)
| | - François Guéraud
- Université de Pau et des Pays de l’Adour, UMR INRAE-UPPA, Ecobiop, FR-64310 Saint-Pée sur Nivelle, France; (A.M.); (L.C.); (M.T.); (F.G.)
| | - Andrew P. Hendry
- Redpath Museum and Department of Biology, McGill University, Montreal, QC H3A 0C4, Canada
- Correspondence: (J.L.); (A.P.H.)
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11
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Gyllenhaal EF, Mapel XM, Naikatini A, Moyle RG, Andersen MJ. A test of island biogeographic theory applied to estimates of gene flow in a Fijian bird is largely consistent with neutral expectations. Mol Ecol 2020; 29:4059-4073. [DOI: 10.1111/mec.15625] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 01/25/2023]
Affiliation(s)
- Ethan F. Gyllenhaal
- Department of Biology and Museum of Southwestern Biology University of New Mexico Albuquerque NM USA
| | - Xena M. Mapel
- Department of Biology and Museum of Southwestern Biology University of New Mexico Albuquerque NM USA
| | - Alivereti Naikatini
- South Pacific Regional Herbarium Institute of Applied Sciences University of the South Pacific Suva Fiji Islands
| | - Robert G. Moyle
- Biodiversity Institute and Department of Ecology and Evolutionary Biology University of Kansas Lawrence KS USA
| | - Michael J. Andersen
- Department of Biology and Museum of Southwestern Biology University of New Mexico Albuquerque NM USA
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