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Feiner N, Yang W, Bunikis I, While GM, Uller T. Adaptive introgression reveals the genetic basis of a sexually selected syndrome in wall lizards. SCIENCE ADVANCES 2024; 10:eadk9315. [PMID: 38569035 PMCID: PMC10990284 DOI: 10.1126/sciadv.adk9315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 02/28/2024] [Indexed: 04/05/2024]
Abstract
The joint expression of particular colors, morphologies, and behaviors is a common feature of adaptation, but the genetic basis for such "phenotypic syndromes" remains poorly understood. Here, we identified a complex genetic architecture associated with a sexually selected syndrome in common wall lizards, by capitalizing on the adaptive introgression of coloration and morphology into a distantly related lineage. Consistent with the hypothesis that the evolution of phenotypic syndromes in vertebrates is facilitated by developmental linkage through neural crest cells, most of the genes associated with the syndrome are involved in neural crest cell regulation. A major locus was a ~400-kb region, characterized by standing structural genetic variation and previously implied in the evolutionary innovation of coloration and beak size in birds. We conclude that features of the developmental and genetic architecture contribute to maintaining trait integration, facilitating the extensive and rapid introgressive spread of suites of sexually selected characters.
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Affiliation(s)
| | - Weizhao Yang
- Department of Biology, Lund University, Lund, Sweden
| | - Ignas Bunikis
- Uppsala Genome Center, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Geoffrey M. While
- School of Natural Sciences, University of Tasmania, Sandy Bay, Tasmania, Australia
| | - Tobias Uller
- Department of Biology, Lund University, Lund, Sweden
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2
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Large scale phenotypic characterisation of Hierophis viridiflavus (Squamata: Serpentes): climatic and environmental drivers suggest the role of evolutionary processes in a polymorphic species. Evol Ecol 2023. [DOI: 10.1007/s10682-023-10234-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
AbstractColour variability is largely widespread in the animal world as it is tightly associated with fitness and survivorship. Therefore, the drivers and implications of such variability have been of great interest for zoologists in the past decades. Reptiles are excellent models to investigate colour variations and expression under different conditions. Here, we focused on melanism occurrence in the two main lineages of Hierophis viridiflavus at the scale of the species distribution, by extracting available data from iNaturalist, a citizen science network, with the aim of detecting any pure effect of climate or local habitat on colour expression. Our analyses highlighted that habitat does not explain differences in phenotypes, whereas marked effects of geographic and climatic variables were detected. However, the observed climatic effects could be a proxy of the geographical distribution of the two groups, and thus the high occurrence of bright colourations in western populations of the eastern lineage could be addressed to an ongoing event of asymmetric gene flow in contact zones. The current distribution of phenotypes could be the outcome of the evolutionary history of the species combined with the geological history of the Mediterranean region. This investigation, though, is only preliminary and molecular analyses on highly variable regions of the genome are mandatory to address this issue.
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3
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Oskyrko O, Sos T, Vacheva E, Vlad SE, Cogălniceanu D, Uller T, Feiner N, Carretero MA. Unravelling the origin of the common wall lizards ( Podarcismuralis) in south-eastern Europe using mitochondrial evidence. Biodivers Data J 2022; 10:e90337. [PMID: 36761656 PMCID: PMC9836615 DOI: 10.3897/bdj.10.e90337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/20/2022] [Indexed: 11/12/2022] Open
Abstract
The origin of the common wall lizards (Podarcismuralis) populations in south-eastern Europe (namely in Bulgaria and Romania), representing the north-eastern range border of this species, was addressed using mitochondrial DNA. We compared cytochrome b sequences from Bulgaria and Romania with those from the contiguous range in Central Europe that are available from previous studies. We recorded five main haplogroups in Bulgaria and Romania, belonging to the Central Balkan clade. However, haplogroup III was recorded in more localities than previously found. Additionally, signs of haplotype admixture were identified in several populations along the Danube River. The presence of the Southern Alps haplotype in one population from Otopeni, Bucharest (Romania) and its close phylogenetic relationships to north Italy populations suggests human-mediated introductions of this wall lizard clade in Romania. Our results confirm that P.muralis can have non-native lineages and admixture through active human-mediated transport.
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Affiliation(s)
- Oleksandra Oskyrko
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, PortugalCIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus de Vairão, 4485-661VairãoPortugal,Department of Zoology, Faculty of Science, Charles University, Vinićná 7, 12844, Prague, Czech RepublicDepartment of Zoology, Faculty of Science, Charles University, Vinićná 7, 12844PragueCzech Republic
| | - Tibor Sos
- Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Clinicilor Street 5–7, 400006, Cluj Napoca, RomaniaEvolutionary Ecology Group, Hungarian Department of Biology and Ecology, Babeș-Bolyai University, Clinicilor Street 5–7, 400006Cluj NapocaRomania,“Milvus Group” Bird and Nature Protection Association, 540445, Tîrgu Mureș, Romania“Milvus Group” Bird and Nature Protection Association, 540445Tîrgu MureșRomania
| | - Emiliya Vacheva
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000, Sofia, BulgariaInstitute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000SofiaBulgaria
| | - Sabina E. Vlad
- Faculty of Natural and Agricultural Sciences, Ovidius University Constanţa, Aleea Universități 1, Campus - Corp B, 900470, Constanƫa, RomaniaFaculty of Natural and Agricultural Sciences, Ovidius University Constanţa, Aleea Universități 1, Campus - Corp B, 900470ConstanƫaRomania,CEDMOG Center, Ovidius University Constanța, Tomis Avenue 145, Constanƫa, RomaniaCEDMOG Center, Ovidius University Constanța, Tomis Avenue 145ConstanƫaRomania,Asociația Chelonia România, 062082, Bucharest, RomaniaAsociația Chelonia România, 062082BucharestRomania
| | - Dan Cogălniceanu
- Faculty of Natural and Agricultural Sciences, Ovidius University Constanţa, Aleea Universități 1, Campus - Corp B, 900470, Constanƫa, RomaniaFaculty of Natural and Agricultural Sciences, Ovidius University Constanţa, Aleea Universități 1, Campus - Corp B, 900470ConstanƫaRomania,Asociația Chelonia România, 062082, Bucharest, RomaniaAsociația Chelonia România, 062082BucharestRomania
| | - Tobias Uller
- Department of Biology, Lund University, Sölvegatan 37, 223 62, Lund, SwedenDepartment of Biology, Lund University, Sölvegatan 37, 223 62LundSweden
| | - Nathalie Feiner
- Department of Biology, Lund University, Sölvegatan 37, 223 62, Lund, SwedenDepartment of Biology, Lund University, Sölvegatan 37, 223 62LundSweden
| | - Miguel A. Carretero
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, PortugalCIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus de Vairão, 4485-661VairãoPortugal,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, R. Campo Alegre, s/n, 4169 - 007, Porto, PortugalDepartamento de Biologia, Faculdade de Ciências da Universidade do Porto, R. Campo Alegre, s/n, 4169 - 007PortoPortugal,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, PortugalBIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661VairãoPortugal
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4
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Chaplin K, Smith Date K, Bray RD, Miller KA, Lutz ML, Razeng E, Thompson MB, Chapple DG. Intraspecific hybridisation of an invasive lizard on Lord Howe Island. AUST J ZOOL 2022. [DOI: 10.1071/zo21045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Human-mediated dispersal of animals often acts to bring populations that have been separated for substantial periods of evolutionary time (e.g. millions of years) in their native range into contact in their introduced range. Whether these taxa successfully interbreed in the introduced range provides information on the strength of reproductive isolation amongst them. The invasive delicate skink (Lampropholis delicata) has been accidentally introduced to Lord Howe Island from four genetically divergent (>2 million years) regions of the species’ native range in eastern Australia. We used mitochondrial DNA and microsatellite data to investigate whether the individuals from four of the native-range source regions are interbreeding on Lord Howe Island. Our analyses indicate that intraspecific hybridisation among individuals from all four native-range source regions is occurring. Although there is little evidence for hybrids in the northern end of Lord Howe Island (proportion of hybrids: 0–0.02; n = 31), there is a high proportion of hybrids in the central (0.33–0.69; n = 59) and southern regions (0.38–0.75; n = 8) of the island. Given the strong evidence for interbreeding among all four native-range source regions examined, and the relatively minor morphological, life-history and phenotypic variation among them, we suggest that the delicate skink should continue to be treated as a single, widespread, but variable species.
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Horta P, Raposeira H, Baños A, Ibáñez C, Razgour O, Rebelo H, Juste J. Counteracting forces of introgressive hybridization and interspecific competition shape the morphological traits of cryptic Iberian Eptesicus bats. Sci Rep 2022; 12:11695. [PMID: 35803997 PMCID: PMC9270368 DOI: 10.1038/s41598-022-15412-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 06/23/2022] [Indexed: 11/30/2022] Open
Abstract
Cryptic species that coexist in sympatry are likely to simultaneously experience strong competition and hybridization. The first phenomenon would lead to character displacement, whereas the second can potentially promote morphological similarity through adaptive introgression. The main goal of this work was to investigate the effect of introgressive hybridization on the morphology of cryptic Iberian Eptesicus bats when facing counteracting evolutionary forces from interspecific competition. We found substantial overlap both in dentition and in wing morphology traits, though mainly in individuals in sympatry. The presence of hybrids contributes to a fifth of this overlap, with hybrids showing traits with intermediate morphometry. Thus, introgressive hybridization may contribute to species adaptation to trophic and ecological space responding directly to the macro-habitats characteristics of the sympatric zone and to local prey availability. On the other hand, fur shade tended to be browner and brighter in hybrids than parental species. Colour differences could result from partitioning of resources as an adaptation to environmental factors such as roost and microhabitats. We argue that a balance between adaptive introgression and niche partitioning shapes species interactions with the environment through affecting morphological traits under selection.
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Affiliation(s)
- Pedro Horta
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal. .,Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal. .,OII - Observatório Inovação Investigação, Seia, Portugal. .,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal.
| | - Helena Raposeira
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002, Porto, Portugal.,OII - Observatório Inovação Investigação, Seia, Portugal.,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | | | - Carlos Ibáñez
- Departmento de Ecología Evolutiva, Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio 26, 41092, Sevilla, Spain.,CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain
| | | | - Hugo Rebelo
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal.,ESS, Polytechnic Institute of Setúbal, Setúbal, Portugal, Campus do IPS - Estefanilha, 2910-761 Setúbal.,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Javier Juste
- Departmento de Ecología Evolutiva, Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio 26, 41092, Sevilla, Spain.,CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain
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6
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Population genetic differentiation and genomic signatures of adaptation to climate in an abundant lizard. Heredity (Edinb) 2022; 128:271-278. [PMID: 35277668 PMCID: PMC8987050 DOI: 10.1038/s41437-022-00518-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 12/18/2022] Open
Abstract
Species distributed across climatic gradients will typically experience spatial variation in selection, but gene flow can prevent such selection from causing population genetic differentiation and local adaptation. Here, we studied genomic variation of 415 individuals across 34 populations of the common wall lizard (Podarcis muralis) in central Italy. This species is highly abundant throughout this region and populations belong to a single genetic lineage, yet there is extensive phenotypic variation across climatic regimes. We used redundancy analysis to, first, quantify the effect of climate and geography on population genomic variation in this region and, second, to test if climate consistently sorts specific alleles across the landscape. Climate explained 5% of the population genomic variation across the landscape, about half of which was collinear with geography. Linear models and redundancy analyses identified loci that were significantly differentiated across climatic regimes. These loci were distributed across the genome and physically associated with genes putatively involved in thermal tolerance, regulation of temperature-dependent metabolism and reproductive activity, and body colouration. Together, these findings suggest that climate can exercise sufficient selection in lizards to promote genetic differentiation across the landscape in spite of high gene flow.
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7
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Aguilar P, Andrade P, Afonso S, Carretero MÁ, Pérez i de Lanuza G, Pinho C. No genomic repercussions of assortative pairing in a colour polymorphic lizard. J Evol Biol 2022; 35:648-656. [DOI: 10.1111/jeb.13990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 02/01/2022] [Accepted: 02/09/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Prem Aguilar
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
- Departamento de Biologia Faculdade de Ciências da Universidade do Porto Porto Portugal
| | - Pedro Andrade
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
| | - Sandra Afonso
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
| | - Miguel Á. Carretero
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
- Departamento de Biologia Faculdade de Ciências da Universidade do Porto Porto Portugal
| | - Guillem Pérez i de Lanuza
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
- Ethology Lab Institut Cavanilles de Biodiversitat i Biologia Evolutiva Universitat de València València Spain
| | - Catarina Pinho
- CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Universidade do Porto Porto Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning CIBIO Campus de Vairão Vairão Portugal
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8
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Llanos‐Garrido A, Pérez‐Tris J, Díaz JA. Low genome-wide divergence between two lizard populations with high adaptive phenotypic differentiation. Ecol Evol 2021; 11:18055-18065. [PMID: 35003657 PMCID: PMC8717303 DOI: 10.1002/ece3.8403] [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: 08/03/2021] [Revised: 10/14/2021] [Accepted: 11/12/2021] [Indexed: 11/17/2022] Open
Abstract
Usually, adaptive phenotypic differentiation is paralleled by genetic divergence between locally adapted populations. However, adaptation can also happen in a scenario of nonsignificant genetic divergence due to intense gene flow and/or recent differentiation. While this phenomenon is rarely published, findings on incipient ecologically driven divergence or isolation by adaptation are relatively common, which could confound our understanding about the frequency at which they actually occur in nature. Here, we explore genome-wide traces of divergence between two populations of the lacertid lizard Psammodromus algirus separated by a 600 m elevational gradient. These populations seem to be differentially adapted to their environments despite showing low levels of genetic differentiation (according to previously studies of mtDNA and microsatellite data). We performed a search for outliers (i.e., loci subject to selection) trying to identify specific loci with FST statistics significantly higher than those expected on the basis of overall, genome-wide estimates of genetic divergence. We find that local phenotypic adaptation (in terms of a wide diversity of characters) was not accompanied by genome-wide differentiation, even when we maximized the chances of unveiling such differentiation at particular loci with FST-based outlier detection tests. Instead, our analyses confirmed the lack of genome-wide differentiation on the basis of more than 70,000 SNPs, which is concordant with a scenario of local adaptation without isolation by environment. Our results add evidence to previous studies in which local adaptation does not lead to any kind of isolation (or early stages of ecological speciation), but maintains phenotypic divergence despite the lack of a differentiated genomic background.
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Affiliation(s)
- Alejandro Llanos‐Garrido
- Department of Organismic and Evolutionary BiologyHarvard UniversityCambridgeMassachusettsUSA
- Department of Biodiversity, Ecology and EvolutionUCMMadridSpain
| | | | - José A. Díaz
- Department of Biodiversity, Ecology and EvolutionUCMMadridSpain
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9
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Yang W, Feiner N, Salvi D, Laakkonen H, Jablonski D, Pinho C, Carretero MA, Sacchi R, Zuffi MAL, Scali S, Plavos K, Pafilis P, Poulakakis N, Lymberakis P, Jandzik D, Schulte U, Aubret F, Badiane A, Perez I de Lanuza G, Abalos J, While GM, Uller T. Population genomics of wall lizards reflects the dynamic history of the Mediterranean Basin. Mol Biol Evol 2021; 39:6413643. [PMID: 34718699 PMCID: PMC8760935 DOI: 10.1093/molbev/msab311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The Mediterranean Basin has experienced extensive change in geology and climate over the past six million years. Yet, the relative importance of key geological events for the distribution and genetic structure of the Mediterranean fauna remains poorly understood. Here, we use population genomic and phylogenomic analyses to establish the evolutionary history and genetic structure of common wall lizards (Podarcis muralis). This species is particularly informative because, in contrast to other Mediterranean lizards, it is widespread across the Iberian, Italian, and Balkan Peninsulas, and in extra-Mediterranean regions. We found strong support for six major lineages within P. muralis, which were largely discordant with the phylogenetic relationship of mitochondrial DNA. The most recent common ancestor of extant P. muralis was likely distributed in the Italian Peninsula, and experienced an “Out-of-Italy” expansion following the Messinian salinity crisis (∼5 Mya), resulting in the differentiation into the extant lineages on the Iberian, Italian, and Balkan Peninsulas. Introgression analysis revealed that both inter- and intraspecific gene flows have been pervasive throughout the evolutionary history of P. muralis. For example, the Southern Italy lineage has a hybrid origin, formed through admixture between the Central Italy lineage and an ancient lineage that was the sister to all other P. muralis. More recent genetic differentiation is associated with the onset of the Quaternary glaciations, which influenced population dynamics and genetic diversity of contemporary lineages. These results demonstrate the pervasive role of Mediterranean geology and climate for the evolutionary history and population genetic structure of extant species.
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Affiliation(s)
- Weizhao Yang
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Nathalie Feiner
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Daniele Salvi
- Department of Health, Life and Environmental Sciences, University of L'Aquila, 67100, Italy Coppito L'Aquila
| | - Hanna Laakkonen
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Daniel Jablonski
- Department of Zoology, Comenius University, Ilkovičova 6, 842 15, Slovakia in Bratislava, Bratislava
| | - Catarina Pinho
- CIBIO/InBIO Research Centre in Biodiversity and Genetic Resources, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Miguel A Carretero
- CIBIO/InBIO Research Centre in Biodiversity and Genetic Resources, Universidade do Porto, Campus de Vairão, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, R. Campo Alegre, s/n, Porto, 4169 - 007, Portugal
| | - Roberto Sacchi
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, 27100, Italy
| | - Marco A L Zuffi
- Museum Natural History, University of Pisa, Pisa, 56011, Italy
| | - Stefano Scali
- Museum of Natural History of Milan, Milano, 20121, Italy
| | | | - Panayiotis Pafilis
- National & Kapodistrian University of Athens, School of Science, Faculty of Biology, Panepistimiopolis 15701, Athens, Greece
| | - Nikos Poulakakis
- Natural History Museum of Crete, School of Sciences and Engineering, University of Crete, Knossos Avenue, Heraklion, 71409, Greece.,Biology Department, School of Sciences and Engineering, University of Crete, Voutes University Campus, Heraklion, 70013, Greece.,Institute of Molecular Biology and Biotechnology (IMBB), Heraklion, 70013, GreeceFoundation for Research and Technology-Hellas (FORTH)
| | - Petros Lymberakis
- Natural History Museum of Crete, School of Sciences and Engineering, University of Crete, Knossos Avenue, Heraklion, 71409, Greece
| | - David Jandzik
- Department of Zoology, Comenius University, Ilkovičova 6, 842 15, Slovakia in Bratislava, Bratislava
| | - Ulrich Schulte
- Büro für Faunistische Gutachten-Dr. Ulrich Schulte, Kaiserstraße 2, Borgholzhausen, 33829, Germany
| | - Fabien Aubret
- Station d'Ecologie Théorique et Expérimentale, CNRS, 09200, Moulis, France.,School of Molecular and Life Sciences, Curtin University, WA, 6102, Australia
| | - Arnaud Badiane
- IMBE, Aix-Marseille Université, Avignon Université, CNRS, IRD, Marseille, France
| | - Guillem Perez I de Lanuza
- Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Valencia, APT. 22085, 46071, Spain
| | - Javier Abalos
- Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, Valencia, APT. 22085, 46071, Spain
| | - Geoffrey M While
- School of Natural Sciences, University of Tasmania, Sandy Bay, Tasmania, 7005, Australia
| | - Tobias Uller
- Department of Biology, Lund University, Lund, 223 62, Sweden
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10
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Jofre GI, Rosenthal GG. A narrow window for geographic cline analysis using genomic data: Effects of age, drift, and migration on error rates. Mol Ecol Resour 2021; 21:2278-2287. [PMID: 33979028 DOI: 10.1111/1755-0998.13428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 01/11/2023]
Abstract
The use of genomic and phenotypic data to scan for outliers is a mainstay for studies of hybridization and speciation. Geographic cline analysis of natural hybrid zones is widely used to identify putative signatures of selection by detecting deviations from baseline patterns of introgression. As with other outlier-based approaches, demographic histories can make neutral regions appear to be under selection and vice versa. In this study, we use a forward-time individual-based simulation approach to evaluate the robustness of geographic cline analysis under different evolutionary scenarios. We modelled multiple stepping-stone hybrid zones with distinct age, deme sizes, and migration rates, and evolving under different types of selection. We found that drift distorts cline shapes and increases false positive rates for signatures of selection. This effect increases with hybrid zone age, particularly if migration between demes is low. Drift can also distort the signature of deleterious effects of hybridization, with genetic incompatibilities and particularly underdominance prone to spurious typing as adaptive introgression. Our results suggest that geographic clines are most useful for outlier analysis in young hybrid zones with large populations of hybrid individuals. Current approaches may overestimate adaptive introgression and underestimate selection against maladaptive genotypes.
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Affiliation(s)
- Gaston I Jofre
- Department of Biology, Texas A&M University, TAMU, College Station, TX, USA.,Centro de Investigaciones Cientıficas de las Huastecas "Aguazarca", Calnali Hidalgo, Mexico.,Department of Biology, University of North Carolina, Chapel Hill, NC, USA
| | - Gil G Rosenthal
- Department of Biology, Texas A&M University, TAMU, College Station, TX, USA.,Centro de Investigaciones Cientıficas de las Huastecas "Aguazarca", Calnali Hidalgo, Mexico
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11
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Miñano MR, While GM, Yang W, Burridge CP, Sacchi R, Zuffi M, Scali S, Salvi D, Uller T. Climate Shapes the Geographic Distribution and Introgressive Spread of Color Ornamentation in Common Wall Lizards. Am Nat 2021; 198:379-393. [PMID: 34403317 DOI: 10.1086/715186] [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
AbstractClimate can exert an effect on the strength of sexual selection, but empirical evidence is limited. Here, we tested whether climate predicts the geographic distribution and introgressive spread of sexually selected male color ornamentation across 114 populations of the common wall lizard, Podarcis muralis. Coloration was highly structured across the landscape and did not reflect genetic differentiation. Instead, color ornamentation was consistently exaggerated in hot and dry environments, suggesting that climate-driven selection maintains geographic variation in spite of gene flow. Introgression of color ornamentation into a distantly related lineage appears to be ongoing and was particularly pronounced in warm climates with wet winters and dry summers. Combined, these results suggest that sexual ornamentation is consistently favored in climates that allow a prolonged reproductive season and high and reliable opportunities for lizard activity. This pattern corroborates theoretical predictions that such climatic conditions reduce the temporal clustering of receptive females and increase male-male competition, resulting in strong sexual selection. In summary, we provide compelling evidence for the importance of climate for the evolution of color ornamentation, and we demonstrate that geographic variation in the strength of sexual selection influences introgression of this phenotype.
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12
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Ficetola GF, Silva-Rocha I, Carretero MA, Vignoli L, Sacchi R, Melotto A, Scali S, Salvi D. Status of the largest extant population of the critically endangered Aeolian lizard Podarcis raffonei (Capo Grosso, Vulcano island). PLoS One 2021; 16:e0253631. [PMID: 34161384 PMCID: PMC8221524 DOI: 10.1371/journal.pone.0253631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/10/2021] [Indexed: 11/29/2022] Open
Abstract
The Aeolian wall lizard Podarcis raffonei is an island endemic that survives only on three tiny islets, and on the Capo Grosso peninsula of the Vulcano island, thus is among the European vertebrates with the smallest range and one of the most threatened by extinction. This species is declining due to competition and hybridization with the non-native lizard Podarcis siculus, but a regular monitoring program is lacking. Here we assessed the size and status of the Capo Grosso population of P. raffonei on Vulcano. In September 2015 we captured 30 individuals showing the typical brown phenotype of P. raffonei, while one single male showed a green phenotype, apparently intermediate between P. raffonei and the non-native Podarcis siculus. In May 2017, only 47% of 131 individuals showed the typical brown phenotype (P. raffonei-like) and 53% showed the green phenotype (P. siculus-like). Based on N-mixture models and removal sampling the estimated size of the Capo Grosso population was of 800–1300 individuals in 2017, being similar to 2015; available data suggest that the total range of the species could be as small as 2 ha. The frequency of individuals with the typical P. raffonei phenotype dramatically dropped between two samplings with a parallel increase of individuals displaying the green phenotype. Observation on outdoor captive-bred individuals demonstrates plasticity for colouration in P. raffonei individuals from Capo Grosso, with several individuals showing the typical brown pattern in September 2017 and a green pattern in March 2021. Non-exclusive hypotheses, including hybridization with P. siculus and plasticity in colour pattern of P. raffonei, are discussed to explain the phenotypic shifts of the P. raffonei population of Capo Grosso. While genomic evidence is required to reach conclusions and investigate eventual hybridization, it is urgent to undertake a programme for the monitoring and management of this lizard.
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Affiliation(s)
- Gentile Francesco Ficetola
- Department of Environmental Science and Policy, Università degli Studi di Milano, Milano, Italy
- CNRS, Laboratoire d’Ecologie Alpine (LECA), Univ. Grenoble Alpes, Grenoble, France
| | - Iolanda Silva-Rocha
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, InBio Laboratório Associado, Vairão, Portugal
| | - Miguel A. Carretero
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, InBio Laboratório Associado, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | | | - Roberto Sacchi
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - Andrea Melotto
- Centre of Excellence for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | | | - Daniele Salvi
- Department of Health, Life and Environmental Sciences, University of L’Aquila, Via Vetoio, L’Aquila, Italy
- * E-mail:
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13
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Abalos J, Pérez i de Lanuza G, Bartolomé A, Aubret F, Uller T, Font E. Viability, behavior, and color expression in the offspring of matings between common wall lizard Podarcis muralis color morphs. Curr Zool 2021; 68:41-55. [PMID: 35169628 PMCID: PMC8836344 DOI: 10.1093/cz/zoab039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 05/07/2021] [Indexed: 01/21/2023] Open
Abstract
Color polymorphisms are widely studied to identify the mechanisms responsible for the origin and maintenance of phenotypic variability in nature. Two of the mechanisms of balancing selection currently thought to explain the long-term persistence of polymorphisms are the evolution of alternative phenotypic optima through correlational selection on suites of traits including color and heterosis. Both of these mechanisms can generate differences in offspring viability and fitness arising from different morph combinations. Here, we examined the effect of parental morph combination on fertilization success, embryonic viability, newborn quality, antipredator, and foraging behavior, as well as inter-annual survival by conducting controlled matings in a polymorphic lacertid Podarcis muralis, where color morphs are frequently assumed to reflect alternative phenotypic optima (e.g., alternative reproductive strategies). Juveniles were kept in outdoor tubs for a year in order to study inter-annual growth, survival, and morph inheritance. In agreement with a previous genome-wide association analysis, morph frequencies in the year-old juveniles matched the frequencies expected if orange and yellow expressions depended on recessive homozygosity at 2 separate loci. Our findings also agree with previous literature reporting higher reproductive output of heavy females and the higher overall viability of heavy newborn lizards, but we found no evidence for the existence of alternative breeding investment strategies in female morphs, or morph-combination effects on offspring viability and behavior. We conclude that inter-morph breeding remains entirely viable and genetic incompatibilities are of little significance for the maintenance of discrete color morphs in P. muralis from the Pyrenees.
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Affiliation(s)
- Javier Abalos
- Ethology Lab, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, Valencia, Spain
| | - Guillem Pérez i de Lanuza
- Ethology Lab, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, Valencia, Spain
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Porto, Portugal
| | - Alicia Bartolomé
- Ethology Lab, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, Valencia, Spain
| | - Fabien Aubret
- SETE, Station d’Ecologie Théorique et Expérimentale, UPR2001, Centre National de la Recherche Scientifique, Paris, France
| | - Tobias Uller
- Department of Biology, Lund University, Lund, Sweden
| | - Enrique Font
- Ethology Lab, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, Valencia, Spain
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14
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Senczuk G, Gramolini L, Avella I, Mori E, Menchetti M, Aloise G, Castiglia R. No association between candidate genes for color determination and color phenotype in
Hierophis viridiflavus,
and characterization of a contact zone. J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriele Senczuk
- Dipartimento di Agricoltura, Ambiente e Alimenti University of Molise Campobasso Italy
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
| | - Laura Gramolini
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- Institut für Biologie Humboldt‐Universität zu Berlin Berlin Germany
| | - Ignazio Avella
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- CIBIO/InBIO ‐ Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto Vairão Portugal
| | - Emiliano Mori
- Istituto di Ricerca sugli Ecosistemi Terrestri Consiglio Nazionale delle Ricerche Sesto Fiorentino Italy
| | | | - Gaetano Aloise
- Museo di Storia Naturale della Calabria e Orto Botanico Università della Calabria Rende Italy
| | - Riccardo Castiglia
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- Museo di Anatomia Comparata “Battista Grassi” Università “La Sapienza” Roma Rome Italy
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15
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Salvi D, Pinho C, Mendes J, Harris DJ. Fossil-calibrated time tree of Podarcis wall lizards provides limited support for biogeographic calibration models. Mol Phylogenet Evol 2021; 161:107169. [PMID: 33798673 DOI: 10.1016/j.ympev.2021.107169] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/17/2021] [Accepted: 03/25/2021] [Indexed: 11/15/2022]
Abstract
Podarcis wall lizards are endemic to the Mediterranean Basin where they represent the predominant reptile group. Despite being extensively used as model organisms in evolutionary and ecological studies their phylogeny and historical biogeography are still incompletely resolved. Moreover, molecular clock calibrations used in wall lizard phylogeography are based on the assumption of vicariant speciation triggered by the abrupt Mediterranean Sea level rise at the end of the Messinian salinity crisis (MSC). However, the validity of this biogeographic calibration remains untested. In this study we inferred a robust time tree based on multilocus data and fossil calibrations using both gene concatenation and species-tree approaches and including models with gene-flow. We found five deeply divergent, geographically coherent, and well-supported clades comprising species from i) Iberian Peninsula and North Africa; ii) Western Mediterranean islands, iii) Sicilian and Maltese islands; and iv-v) Balkan region and Aegean islands. The mitochondrial tree shows some inconsistencies with the species tree that warrant future investigation. Diversification of main clades is estimated in a short time frame during the Middle Miocene and might have been associated with a period of global climate cooling with the establishment of a marked climatic zonation in Europe. Cladogenetic events within the main clades are scattered throughout the time tree, from the Late Miocene to the Early Pleistocene, suggesting that speciation events in wall lizards reflect a complex interplay between regional topography, climate and geological history rather than a shared major climatic or paleogeographic event. Our absolute time estimates, as well as a relative dating approach, demonstrate that the assumption of a causal link between sea-level rise at the end of the MSC and the diversification of many island endemics is not justified. This study reinforces the notion that multiple dispersal and vicariant events, at different time frames, are required to explain current allopatric distributions and to account for the historical assembly of Mediterranean biota, and cautions against the use of biogeographic calibrations based on the assumption of vicariance.
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Affiliation(s)
- Daniele Salvi
- University of L'Aquila, Department of Health, Life and Environmental Sciences, 67100 Coppito, L'Aquila, Italy; CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal.
| | - Catarina Pinho
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal.
| | - Joana Mendes
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
| | - D James Harris
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, 4485-661 Vairão, Portugal.
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16
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Prada C, Hellberg ME. Speciation-by-depth on coral reefs: Sympatric divergence with gene flow or cryptic transient isolation? J Evol Biol 2021; 34:128-137. [PMID: 33140895 PMCID: PMC7894305 DOI: 10.1111/jeb.13731] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 07/21/2020] [Accepted: 09/29/2020] [Indexed: 12/30/2022]
Abstract
The distributions of many sister species in the sea overlap geographically but are partitioned along depth gradients. The genetic changes leading to depth segregation may evolve in geographic isolation as a prerequisite to coexistence or may emerge during primary divergence leading to new species. These alternatives can now be distinguished via the power endowed by the thousands of scorable loci provided by second-generation sequence data. Here, we revisit the case of two depth-segregated, genetically isolated ecotypes of the nominal Caribbean candelabrum coral Eunicea flexuosa. Previous analyses based on a handful of markers could not distinguish between models of genetic exchange after a period of isolation (consistent with secondary contact) and divergence with gene flow (consistent with primary divergence). Analyses of the history of isolation, genetic exchange and population size based on 15,640 new SNP markers derived from RNAseq data best support models where divergence began 800K BP and include epochs of divergence with gene flow, but with an intermediate period of transient isolation. Results also supported the previous conclusion that recent exchange between the ecotypes occurs asymmetrically from the Shallow lineage to the Deep. Parallel analyses of data from two other corals with depth-segregated populations (Agaricia fragilis and Pocillopora damicornis) suggest divergence leading to depth-segregated populations may begin with a period of symmetric exchange, but that an epoch of population isolation precedes more complete isolation marked by asymmetric introgression. Thus, while divergence-with-gene flow may account for much of the differentiation that separates closely related, depth-segregated species, it remains to be seen whether any critical steps in the speciation process only occur when populations are isolated.
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Affiliation(s)
- Carlos Prada
- Department of Biological SciencesUniversity of Rhode IslandKingstonRIUSA
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17
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Schley RJ, Pennington RT, Pérez-Escobar OA, Helmstetter AJ, de la Estrella M, Larridon I, Sabino Kikuchi IAB, Barraclough TG, Forest F, Klitgård B. Introgression across evolutionary scales suggests reticulation contributes to Amazonian tree diversity. Mol Ecol 2020; 29:4170-4185. [PMID: 32881172 DOI: 10.1111/mec.15616] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 01/03/2023]
Abstract
Hybridization has the potential to generate or homogenize biodiversity and is a particularly common phenomenon in plants, with an estimated 25% of plant species undergoing interspecific gene flow. However, hybridization in Amazonia's megadiverse tree flora was assumed to be extremely rare despite extensive sympatry between closely related species, and its role in diversification remains enigmatic because it has not yet been examined empirically. Using members of a dominant Amazonian tree family (Brownea, Fabaceae) as a model to address this knowledge gap, our study recovered extensive evidence of hybridization among multiple lineages across phylogenetic scales. More specifically, using targeted sequence capture our results uncovered several historical introgression events between Brownea lineages and indicated that gene tree incongruence in Brownea is best explained by reticulation, rather than solely by incomplete lineage sorting. Furthermore, investigation of recent hybridization using ~19,000 ddRAD loci recovered a high degree of shared variation between two Brownea species that co-occur in the Ecuadorian Amazon. Our analyses also showed that these sympatric lineages exhibit homogeneous rates of introgression among loci relative to the genome-wide average, implying a lack of selection against hybrid genotypes and persistent hybridization. Our results demonstrate that gene flow between multiple Amazonian tree species has occurred across temporal scales, and contrasts with the prevailing view of hybridization's rarity in Amazonia. Overall, our results provide novel evidence that reticulate evolution influenced diversification in part of the Amazonian tree flora, which is the most diverse on Earth.
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Affiliation(s)
- Rowan J Schley
- Royal Botanic Gardens, Kew, Richmond, UK.,Department of Life Sciences, Imperial College London, Ascot, Berkshire, London, UK
| | - R Toby Pennington
- Geography, University of Exeter, Exeter, UK.,Royal Botanic Garden Edinburgh, Edinburgh, UK
| | | | - Andrew J Helmstetter
- Institut de Recherche pour le Développement (IRD), UMR-DIADE, Montpellier, France
| | - Manuel de la Estrella
- Departamento de Botánica, Ecología y Fisiología Vegetal, Facultad de Ciencias, Universidad de Córdoba, Córdoba, Spain
| | - Isabel Larridon
- Royal Botanic Gardens, Kew, Richmond, UK.,Systematic and Evolutionary Botany Lab, Department of Biology, Ghent University, K.L, Gent, Belgium
| | | | - Timothy G Barraclough
- Department of Life Sciences, Imperial College London, Ascot, Berkshire, London, UK.,Department of Zoology, University of Oxford, Oxford, UK
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18
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Yang W, Feiner N, Laakkonen H, Sacchi R, Zuffi MAL, Scali S, While GM, Uller T. Spatial variation in gene flow across a hybrid zone reveals causes of reproductive isolation and asymmetric introgression in wall lizards. Evolution 2020; 74:1289-1300. [PMID: 32396671 DOI: 10.1111/evo.14001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/04/2020] [Indexed: 12/22/2022]
Abstract
Hybrid zones provide insights into the evolution of reproductive isolation. Sexual selection can contribute to the evolution of reproductive barriers, but it remains poorly understood how sexual traits impact gene flow in secondary contact. Here, we show that a recently evolved suite of sexual traits that function in male-male competition mediates gene flow between two lineages of wall lizards (Podarcis muralis). Gene flow was relatively low and asymmetric in the presence of exaggerated male morphology and coloration compared to when the lineages share the ancestral phenotype. Putative barrier loci were enriched in genomic regions that were highly differentiated between the two lineages and showed low concordance between the transects. The exception was a consistently low genetic exchange around ATXN1, a gene that modulates social behavior. We suggest that this gene may contribute to the male mate preferences that are known to cause lineage-assortative mating in this species. Although female choice modulates the degree of reproductive isolation in a variety of taxa, wall lizards demonstrate that both male-male competition and male mate choice can contribute to the extent of gene flow between lineages.
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Affiliation(s)
- Weizhao Yang
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Nathalie Feiner
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Hanna Laakkonen
- Department of Biology, Lund University, Lund, 223 62, Sweden
| | - Roberto Sacchi
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, 27100, Italy
| | - Marco A L Zuffi
- Museum Natural History, University of Pisa, Pisa, 56011, Italy
| | - Stefano Scali
- Museum of Natural History of Milan, Milano, 20121, Italy
| | - Geoffrey M While
- School of Biology, University of Tasmania, Hobart, Tasmania, 7001, Australia
| | - Tobias Uller
- Department of Biology, Lund University, Lund, 223 62, Sweden
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19
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Uller T, Laakkonen H, Michaelides S, While GM, Coulon A, Aubret F. Genetic differentiation predicts body size divergence between island and mainland populations of common wall lizards (Podarcis muralis). Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
AbstractSmall-bodied vertebrates sometimes evolve gigantism on islands, but there is a lack of consistent association with ecological factors or island characteristics. One possible reason is that, even if the ecological conditions are right, body size might fail to diverge on islands that were isolated recently or if there is gene flow between islands and the mainland. We studied body size, ventral colour polymorphism and genetic structure across nine islands and adjacent mainland populations of common wall lizards (Podarcis muralis) off the western coast of France. Population genetic data suggested that island populations might have maintained gene flow after their geographical isolation from the mainland. Island lizards were larger and heavier than mainland lizards on average, but the extent of gigantism varied substantially between islands. Island size and distance from the mainland were poor predictors of body size, but lizards from populations that were highly genetically differentiated from the mainland were larger than lizards from less differentiated populations. Colour morphs that were rare on the mainland tended to be more common on islands. We propose that genetic isolation or bottlenecks promote body size evolution in island lizards, which makes it challenging to identify ecological causes of island gigantism without complementary genetic information.
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Affiliation(s)
- Tobias Uller
- Department of Biology, Lund University, Sölvegatan, Lund, Sweden
- Department of Zoology, University of Oxford, Oxford, UK
| | - Hanna Laakkonen
- Department of Biology, Lund University, Sölvegatan, Lund, Sweden
| | - Sozos Michaelides
- Department of Zoology, University of Oxford, Oxford, UK
- Department of Natural Resources Science, University of Rhode Island, Kingston, RI, USA
| | - Geoffrey M While
- Department of Zoology, University of Oxford, Oxford, UK
- School of Biology, University of Tasmania, Hobart, Tasmania, Australia
| | - Aurélie Coulon
- CEFE, CNRS, Univ Montpellier, Univ Paul Valéry Montpellier 3, EPHE, IRD, Montpellier, France
- Centre d’Ecologie et des Sciences de la Conservation (CESCO), Muséum national d’Histoire naturelle, Centre National de la Recherche Scientifique, Sorbonne Université, Paris, France
| | - Fabien Aubret
- CNRS, Station d’Ecologie Théorique et Expérimentale, UMR 5321 CNRS – Université Paul Sabatier, Moulis, France
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20
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Atkins ZS, Amor MD, Clemann N, Chapple DG, While GM, Gardner MG, Haines ML, Harrisson KA, Schroder M, Robert KA. Allopatric divergence drives the genetic structuring of an endangered alpine endemic lizard with a sky‐island distribution. Anim Conserv 2019. [DOI: 10.1111/acv.12519] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Z. S. Atkins
- Department of Ecology, Environment and Evolution La Trobe University Bundoora Vic. Australia
| | - M. D. Amor
- Department of Ecology, Environment and Evolution La Trobe University Bundoora Vic. Australia
| | - N. Clemann
- Department of Environment, Land, Water& Planning Arthur Rylah Institute for Environmental Research Heidelberg Vic. Australia
| | - D. G. Chapple
- School of Biological Sciences Monash University Clayton Vic. Australia
| | - G. M. While
- School of Biological Sciences University of Tasmania Hobart TAS Australia
| | - M. G. Gardner
- College of Science and Engineering Flinders University Adelaide Australia
- Evolutionary Biology Unit South Australian Museum Adelaide SA Australia
| | - M. L. Haines
- Biological Sciences University of Wisconsin‐Milwaukee Milwaukee WI USA
| | - K. A. Harrisson
- Department of Ecology, Environment and Evolution La Trobe University Bundoora Vic. Australia
- Department of Environment, Land, Water& Planning Arthur Rylah Institute for Environmental Research Heidelberg Vic. Australia
| | - M. Schroder
- NSW National Parks and Wildlife ServiceSnowy Mountains Region Jindabyne NSW Australia
| | - K. A. Robert
- Department of Ecology, Environment and Evolution La Trobe University Bundoora Vic. Australia
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21
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Lipshutz SE, Meier JI, Derryberry GE, Miller MJ, Seehausen O, Derryberry EP. Differential introgression of a female competitive trait in a hybrid zone between sex-role reversed species. Evolution 2019; 73:188-201. [PMID: 30597557 DOI: 10.1111/evo.13675] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 12/10/2018] [Indexed: 01/04/2023]
Abstract
Mating behavior between recently diverged species in secondary contact can impede or promote reproductive isolation. Traditionally, researchers focus on the importance of female mate choice and male-male competition in maintaining or eroding species barriers. Although female-female competition is widespread, little is known about its role in the speciation process. Here, we investigate a case of interspecific female competition and its influence on patterns of phenotypic and genetic introgression between species. We examine a hybrid zone between sex-role reversed, Neotropical shorebird species, the northern jacana (Jacana spinosa) and wattled jacana (J. jacana), in which female-female competition is a major determinant of reproductive success. Previous work found that females of the more aggressive and larger species, J. spinosa, disproportionately mother hybrid offspring, potentially by monopolizing breeding territories in sympatry with J. jacana. We find a cline shift of female body mass relative to the genetic center of the hybrid zone, consistent with asymmetric introgression of this competitive trait. We suggest that divergence in sexual characteristics between sex-role reversed females can influence patterns of gene flow upon secondary contact, similar to males in systems with more typical sex roles.
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Affiliation(s)
- Sara E Lipshutz
- Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, 70118.,Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, 37996.,Institute of Ecology and Evolution, University of Bern, Switzerland
| | - Joana I Meier
- Institute of Ecology and Evolution, University of Bern, Switzerland.,Fish Ecology and Evolution, Eawag Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, Switzerland
| | - Graham E Derryberry
- Museum of Natural Science, Louisiana State University, Baton Rouge, Louisiana, 70803
| | - Matthew J Miller
- Smithsonian Tropical Research Institute, Balboa, Republic of Panama.,Sam Noble Oklahoma Museum and Department of Biology, University of Oklahoma, Norman, Oklahoma, 73019
| | - Ole Seehausen
- Institute of Ecology and Evolution, University of Bern, Switzerland.,Fish Ecology and Evolution, Eawag Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, Switzerland
| | - Elizabeth P Derryberry
- Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, Louisiana, 70118.,Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, 37996
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