What is reproductive isolation?

Journal of Evolutionary Biology, Год журнала: 2022, Номер 35(9), С. 1143 - 1164

Опубликована: Сен. 1, 2022

Abstract Reproductive isolation (RI) is a core concept in evolutionary biology. It has been the central focus of speciation research since modern synthesis and basis by which biological species are defined. Despite this, term used seemingly different ways, attempts to quantify RI have very approaches. After showing that field lacks clear definition term, we attempt clarify key issues, including what is, how it can be quantified principle, measured practice. Following other definitions with genetic focus, propose quantitative measure effect differences between populations on gene flow. Specifically, compares flow neutral alleles presence these without any such differences. thus greater than zero when reduce populations. We show range scenarios. A conclusion depends strongly circumstances—including spatial, temporal genomic context—making difficult compare across systems. reviewing methods for estimating from data, conclude discuss our findings light goals encourage use integrate organismal biology ways efforts data vastly In this paper, issues about RI,

Язык: Английский

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Acknowledging more biodiversity without more species

Proceedings of the National Academy of Sciences, Год журнала: 2023, Номер 120(40)

Опубликована: Сен. 25, 2023

Delimiting and naming biodiversity is a vital step toward wildlife conservation research. However, species delimitation must be consistent across biota so that the limited resources available for nature protection can spent effectively objectively. To date, newly discovered lineages typically are either left undescribed thus remain unprotected or being erroneously proposed as new despite mixed evidence completed speciation, in turn contributing to emerging problem of taxonomic inflation. Inspired by recent conceptual methodological progress, we propose standardized workflow combines phylogenetic hybrid zone analyses genomic datasets (“genomic taxonomy”), which phylogeographic do not freely admix ranked species, while those have remained fully genetically compatible subspecies. In both cases, encourage their formal naming, diagnosis, description promote social awareness biodiversity. The use loci throughout genome overcomes unreliability widely used barcoding genes when patterns complex, evaluation divergence reproductive isolation unifies long-opposed concepts lineage biological species. We suggest shift assessments from single level (species) two-level hierarchy (species subspecies) will lead more balanced perception intraspecific interspecific diversity valued adequately protected.

Язык: Английский

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Next‐generation species delimitation and taxonomy: Implications for biogeography

Journal of Biogeography, Год журнала: 2024, Номер 51(9), С. 1709 - 1722

Опубликована: Фев. 13, 2024

Abstract An accurate species‐level taxonomy is paramount for biogeographical research, and conversely, data are of importance species delimitation. We here review recent developments future perspectives direct relevance biogeographers. The understanding that independently evolving segments population‐level lineages, the rise integrative approaches to delimit such advent high‐throughput sequencing have considerably renewed discipline taxonomy. Using genome‐scale molecular datasets, extent admixture across hybrid zones can now be effectively assessed evolutionary independence lineages inferred, leading more reliable comparable delimitation criteria. Substantially divergent but admixing phylogeographical conveniently named as subspecies, thus avoiding taxonomic oversplitting inflation. At same time, comprehensive DNA barcoding metabarcoding efforts uncovering an enormous proportion undiscovered biotic diversity, we encourage development bioinformatic pipelines combine discovery with diagnosis scientific naming, approach a inventory globe without abandoning established Linnaean system.

Язык: Английский

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The Role of Hybridization in Species Formation and Persistence

Cold Spring Harbor Perspectives in Biology, Год журнала: 2024, Номер 16(12), С. a041445 - a041445

Опубликована: Март 4, 2024

Joshua V. Peñalba1, Anna Runemark2, Joana I. Meier3,4, Pooja Singh5,6, Guinevere O.U. Wogan7, Rosa Sánchez-Guillén8, James Mallet9, Sina J. Rometsch10,11, Mitra Menon12, Ole Seehausen5,6, Jonna Kulmuni13,14,16 and Ricardo Pereira15,16 1Museum für Naturkunde, Leibniz Institute for Evolution Biodiversity Science, Center Integrative Discovery, 10115 Berlin, Germany 2Department of Biology, Lund University, 22632 Lund, Sweden 3Tree Life, Wellcome Sanger Institute, Hinxton, Cambridgeshire CB10 1SA, United Kingdom 4Department Zoology, University Cambridge, CB2 3EJ, 5Department Aquatic Ecology, Ecology Evolution, Bern, 3012 Switzerland 6Center & Biogeochemistry, Swiss Federal Science Technology (EAWAG), CH-8600 Kastanienbaum, 7Department Oklahoma State Stillwater, 74078, USA 8Red de Biología Evolutiva, INECOL, Xalapa, Veracruz, CP 91073, Mexico 9Organismal Evolutionary Harvard Massachusetts 02138, 10Department Yale New Haven, Connecticut 06511, 11Yale Biospheric Studies, 12Department California Davis, 95616, 13Department Population Ecosystem Dynamics, Amsterdam, 1098 XH The Netherlands 14Organismal Biology Research Programme, Helsinki, Biocenter 3, Finland 15Department Museum Natural History Stuttgart, Stuttgart 70191, Correspondence: ricardojn.pereira{at}gmail.com ↵16 These authors contributed equally to this work.

Язык: Английский

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Speciation by sexual selection: 20 years of progress

Trends in Ecology & Evolution, Год журнала: 2021, Номер 36(12), С. 1153 - 1163

Опубликована: Окт. 1, 2021

Язык: Английский

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The strength of reproductive isolating barriers in seed plants: Insights from studies quantifying premating and postmating reproductive barriers over the past 15 years

Evolution, Год журнала: 2022, Номер 76(10), С. 2228 - 2243

Опубликована: Июль 15, 2022

Speciation is driven by the evolution of reproductive isolating barriers that reduce, and ultimately prevent, substantial gene flow between lineages. Despite its central role in evolutionary biology, process can be difficult to study because it proceeds differently among groups may occur over long timescales. Due this complexity, we typically rely on generalizations empirical data describe understand process. Previous reviews isolation (RI) flowering plants have suggested prezygotic or extrinsic generally a stronger effect reducing compared postzygotic intrinsic barriers. Past conclusions rested relatively few estimates RI; however, RI become increasingly abundant past 15 years. We analyzed from recent studies quantifying multiple pre- postmating strengths across 89 taxa pairs using standardized metrics. Individual were average than individual barriers, total strength was approximately twice RI. These findings corroborate ecological divergence factors, as opposed solely accumulation genetic incompatibilities, are important speciation maintenance species boundaries plants. an emphasis literature asymmetric RI, found acted equally asymmetrically. Overall, variability 12 highlights great diversity mechanisms contribute plant diversification.

Язык: Английский

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Coupling of Barriers to Gene Exchange: Causes and Consequences

Cold Spring Harbor Perspectives in Biology, Год журнала: 2024, Номер 16(8), С. a041432 - a041432

Опубликована: Янв. 8, 2024

Erik B. Dopman1, Kerry L. Shaw2, Maria R. Servedio3, Roger K. Butlin4,5 and Carole M. Smadja6 1Department of Biology, Tufts University, Medford, Massachusetts 02155, USA 2Department Neurobiology Behavior, Cornell Ithaca, New York 14853, 3Department University North Carolina, Chapel Hill, Carolina 27599, 4Ecology Evolutionary School Biosciences, The Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom 5Department Marine Sciences, Gothenburg, Gothenburg 40530, Sweden 6Institut des Sciences de l'Evolution Montpellier ISEM, Universite Montpellier, CNRS, IRD, 34095, France Correspondence: erik.dopman{at}tufts.edu

Язык: Английский

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Diversity, distribution and molecular species delimitation in frogs and toads from the Eastern Palaearctic

Zoological Journal of the Linnean Society, Год журнала: 2021, Номер 195(3), С. 695 - 760

Опубликована: Сен. 8, 2021

Abstract Biodiversity analyses can greatly benefit from coherent species delimitation schemes and up-to-date distribution data. In this article, we have made the daring attempt to delimit map described undescribed lineages of anuran amphibians in Eastern Palaearctic (EP) region its broad sense. Through a literature review, evaluated status considering reproductive isolation genetic divergence, combined with an extensive occurrence dataset (nearly 85k localities). Altogether 274 native 46 genera ten families were retrieved, plus eight additional introduced other realms. Independent hotspots richness concentrated southern Tibet (Medog County), circum-Sichuan Basin region, Taiwan, Korean Peninsula main Japanese islands. Phylogeographic breaks responsible for recent situ speciation events shared around Sichuan Mountains, across Honshu between Ryukyu Island groups, but not shallow water bodies like Yellow Sea Taiwan Strait. Anuran compositions suggested restrict zoogeographical limits EP East Asia. rapidly evolving field, our study provides checkpoint appreciate patterns diversity under single, spatially explicit, framework that integrates phylogeographic data taxonomic research.

Язык: Английский

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Integrating top‐down and bottom‐up approaches to understand the genetic architecture of speciation across a monkeyflower hybrid zone

Molecular Ecology, Год журнала: 2023, Номер 32(8), С. 2041 - 2054

Опубликована: Янв. 18, 2023

Abstract Understanding the phenotypic and genetic architecture of reproductive isolation is a long‐standing goal speciation research. In several systems, large‐effect loci contributing to barrier phenotypes have been characterized, but such causal connections are rarely known for more complex architectures. this study, we combine “top‐down” “bottom‐up” approaches with demographic modelling toward an integrated understanding across monkeyflower hybrid zone. Previous work suggests that pollinator visitation acts as primary gene flow between two divergent red‐ yellow‐flowered ecotypes Mimulus aurantiacus . Several candidate isolating traits anonymous single nucleotide polymorphism under selection identified, their genomic positions remain unknown. Here, report findings from analyses indicate zone formed by secondary contact, subsequent was restricted widespread genome. Using novel, geographic cline‐based genome scan, demonstrate broadly distributed genome, rather than mapping one or few “islands speciation.” Quantitative trait locus (QTL) reveals most floral highly polygenic, little evidence QTL colocalize, indicating genetically independent. Finally, find overlap, suggesting some contribute other forms isolation. Our highlight challenges reveal barriers may play important role in system.

Язык: Английский

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Diverse pathways to speciation revealed by marine snails

Trends in Genetics, Год журнала: 2024, Номер 40(4), С. 337 - 351

Опубликована: Фев. 22, 2024

Speciation is a key evolutionary process that not yet fully understood. Combining population genomic and ecological data from multiple diverging pairs of marine snails (Littorina) supports the search for speciation mechanisms. Placing on one-dimensional continuum, undifferentiated populations to species, obscured complexity speciation. Adding axes helped describe either routes or reproductive isolation in snails. Divergent selection repeatedly generated barriers between ecotypes, but appeared less important completing while genetic incompatibilities played role. Chromosomal inversions contributed barriers, with variable impact. A multidimensional (hypercube) approach supported framing questions identification knowledge gaps can be useful understand many other systems.

Язык: Английский

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