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Simonov E, Lopatina NV, Titov SV, Ivanova AD, Brandler OV, Surin VL, Matrosova VA, Dvilis AE, Oreshkova NV, Kapustina SY, Golenishchev FN, Ermakov OA. Traditional multilocus phylogeny fails to fully resolve Palearctic ground squirrels (Spermophilus) relationships but reveals a new species endemic to West Siberia. Mol Phylogenet Evol 2024; 195:108057. [PMID: 38471598 DOI: 10.1016/j.ympev.2024.108057] [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: 10/05/2023] [Revised: 02/29/2024] [Accepted: 03/09/2024] [Indexed: 03/14/2024]
Abstract
Previous efforts to reconstruct evolutionary history of Palearctic ground squirrels within the genus Spermophilus have primarily relied on a single mitochondrial marker for phylogenetic data. In this study, we present the first phylogeny with comprehensive taxon sampling of Spermophilus via a conventional multilocus approach utilizing five mitochondrial and five nuclear markers. Through application of the multispecies coalescent model, we constructed a species tree revealing four distinct clades that diverged during the Late Miocene. These clades are 1) S. alaschanicus and S. dauricus from East Asia; 2) S. musicus and S. pygmaeus from East Europe and northwestern Central Asia; 3) the subgenus Colobotis found across Central Asia and its adjacent regions and encompassing S. brevicauda, S. erythrogenys, S. fulvus, S. major, S. pallidicauda, S. ralli, S. relictus, S. selevini, and S. vorontsovi sp. nov.; and 4) a Central/Eastern Europe and Asia Minor clade comprising S. citellus, S. taurensis, S. xanthoprymnus, S. suslicus, and S. odessanus. The latter clade lacked strong support owing to uncertainty of taxonomic placement of S. odessanus and S. suslicus. Resolving relationships within the subgenus Colobotis, which radiated rapidly, remains challenging likely because of incomplete lineage sorting and introgressive hybridization. Most of modern Spermophilus species diversified during the Early-Middle Pleistocene (2.2-1.0 million years ago). We propose a revised taxonomic classification for the genus Spermophilus by recognizing 18 species including a newly identified one (S. vorontsovi sp. nov.), which is found only in a limited area in the southeast of West Siberia. Employing genome-wide single-nucleotide polymorphism genotyping, we substantiated the role of the Ob River as a major barrier ensuring robust isolation of this taxon from S. erythrogenys. Despite its inherent limitations, the traditional multilocus approach remains a valuable tool for resolving relationships and can provide important insights into otherwise poorly understood groups. It is imperative to recognize that additional efforts are needed to definitively determine phylogenetic relationships between certain species of Palearctic ground squirrels.
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Affiliation(s)
- Evgeniy Simonov
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Frunze Str. 11, Novosibirsk 630091, Russia.
| | - Natalia V Lopatina
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Frunze Str. 11, Novosibirsk 630091, Russia
| | - Sergey V Titov
- Department of Zoology and Ecology, Penza State University, Krasnaya Str. 40, Penza 440026, Russia
| | - Anastasiya D Ivanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, Moscow 119991, Russia
| | - Oleg V Brandler
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova Str. 26, Moscow 119334, Russia
| | - Vadim L Surin
- National Medical Research Center for Hematology, Novyy Zykovskiy Pr. 4, Moscow 125167, Russia
| | - Vera A Matrosova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, Moscow 119991, Russia
| | - Alisa E Dvilis
- Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Frunze Str. 11, Novosibirsk 630091, Russia
| | - Nataliya V Oreshkova
- Federal Research Center Krasnoyarsk Science Center, Siberian Branch of Russian Academy of Sciences, Akademgorodok Str. 50, Krasnoyarsk 660036, Russia; Laboratory of Forest Genomics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyy Ave. 79, Krasnoyarsk 660041, Russia; V. N. Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences, Akademgorodok Str. 50/28, Krasnoyarsk 660036, Russia; Department of Genomics and Bioinformatics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyy Ave. 79, Krasnoyarsk 660041, Russia
| | - Svetlana Yu Kapustina
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Vavilova Str. 26, Moscow 119334, Russia
| | - Fedor N Golenishchev
- Zoological Institute, Russian Academy of Sciences, Universitetskaya Emb. 1, Saint Petersburg 199034, Russia
| | - Oleg A Ermakov
- Department of Zoology and Ecology, Penza State University, Krasnaya Str. 40, Penza 440026, Russia.
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Wacker KS, Winger BM. An Elevational Phylogeographic Diversity Gradient in Neotropical Birds Is Decoupled from Speciation Rates. Am Nat 2024; 203:362-381. [PMID: 38358813 DOI: 10.1086/728598] [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] [Indexed: 02/17/2024]
Abstract
AbstractA key question about macroevolutionary speciation rates is whether they are controlled by microevolutionary processes operating at the population level. For example, does spatial variation in population genetic differentiation underlie geographical gradients in speciation rates? Previous work suggests that speciation rates increase with elevation in Neotropical birds, but underlying population-level gradients remain unexplored. Here, we characterize elevational phylogeographic diversity between montane and lowland birds in the megadiverse Andes-Amazonian system and assess its relationship to speciation rates to evaluate the link between population-level differentiation and species-level diversification. We aggregated and georeferenced nearly 7,000 mitochondrial DNA sequences across 103 species or species complexes in the Andes and Amazonia and used these sequences to describe phylogeographic differentiation across both regions. Our results show increased levels of both discrete and continuous metrics of population structure in the Andean mountains compared with the Amazonian lowlands. However, higher levels of population differentiation do not predict higher rates of speciation in our dataset. Multiple potential factors may lead to our observed decoupling of initial population divergence and speciation rates, including the ephemerality of incipient species and the multifaceted nature of the speciation process, as well as methodological challenges associated with estimating rates of population differentiation and speciation.
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Seesamut T, Oba Y, Jirapatrasilp P, Martinsson S, Lindström M, Erséus C, Panha S. Global species delimitation of the cosmopolitan marine littoral earthworm Pontodrilus litoralis (Grube, 1855). Sci Rep 2024; 14:1753. [PMID: 38243053 PMCID: PMC10799051 DOI: 10.1038/s41598-024-52252-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
The marine littoral earthworm Pontodrilus litoralis (Grube, 1855) is widely distributed and is reported as a single species. This study utilized an integrative taxonomic approach based upon morphological examination, phylogenetic reconstruction, and molecular species delimitation, to test whether the taxon is a single species or a species complex. For this, a total of 114 P. litoralis specimens collected from North America, Africa, Australia and Oceania, Europe and Asia were used. The phylogenetic analyses revealed deeply divergent mitochondrial lineages and a high level of genetic diversity among P. litoralis populations. Both single and multi-locus species delimitation analyses yielded several molecular operational taxonomic units. Therefore, due to the homogeneity of morphological characteristics, it is likely that the morphospecies P. litoralis is a complex of four or more cryptic species, suggesting that more sampling is required and that the population structure genetic data and gene flow need to be investigated.
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Affiliation(s)
- Teerapong Seesamut
- Department of Biology, Faculty of Science, Rangsit University, Pathumthani, 12000, Thailand
| | - Yuichi Oba
- Department of Environmental Biology, Chubu University, Kasugai, 487-8501, Japan
| | - Parin Jirapatrasilp
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Svante Martinsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden
| | - Maria Lindström
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden
| | - Christer Erséus
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, 405 30, Göteborg, Sweden.
| | - Somsak Panha
- Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Academy of Science, The Royal Society of Thailand, Bangkok, 10300, Thailand.
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Delapieve MLS, Rocha LA, Reis RE. Phylogenomics of the narrowly endemic Eurycheilichthys (Siluriformes: Loricariidae): Sympatric species with non-sister relationships suggest mainly allopatric speciation. Mol Phylogenet Evol 2024; 190:107970. [PMID: 37995894 DOI: 10.1016/j.ympev.2023.107970] [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: 07/17/2023] [Revised: 11/09/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023]
Abstract
Armored catfishes of the genus Eurycheilichthys are endemic to Southern Brazil and Misiones (Argentina) comprising nine species of small size, with a high degree of sympatry and species diversity distributed in two river basins. Here we use new genome-wide data to infer a species phylogeny and test species boundaries for this poorly known group. We estimate 1) the phylogenetic relationships of the species of Eurycheilichthys based on 29,350 loci in 65 individuals of nine species plus outgroups, and 2) the population structure and differentiation based on 43,712 loci and 62 individuals to estimate how geography may have acted on speciation and formation of the sympatric species groups. Analyses support the monophyly of the genus and suggest two species-inclusive clades (East and West) with high support and very recently diverged species. Western clade contains E. limulus (from upper Jacuí River basin) that is sister to Western species of the Taquari-Antas basin plus E. paucidens. The Eastern clade contains E. pantherinus (from Uruguay River basin) sister to the Eastern species of the Taquari-Antas basin E. coryphaenus, plus the central-distributed species E. planus and E. vacariensis, and the more widely-distributed species E. luisae. Eurycheilichthys luisae is not monophyletic and may contain one or more cryptic species or hybrid individuals. A stronger diversity on structure of lineages on the Taquari-Antas, when compared to upper Uruguay and Jacuí River basins, and the fact that most of the sympatrically distributed taxa have non-sister relationships suggest a scenario of mainly allopatric speciation and may indicate a more dynamic landscape with headwater capture events among these tributaries.
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Affiliation(s)
- Maria Laura S Delapieve
- Laboratory of Vertebrate Systematics, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Av. Ipiranga 6681, 90619-900 Porto Alegre, RS, Brazil.
| | - Luiz A Rocha
- Section of Ichthyology, California Academy of Sciences, 55 Music Concourse Drive, Golden Gate Park, San Francisco, CA 94118, USA
| | - Roberto E Reis
- Laboratory of Vertebrate Systematics, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Av. Ipiranga 6681, 90619-900 Porto Alegre, RS, Brazil
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Romeiro-Brito M, Khan G, Perez MF, Zappi DC, Taylor NP, Olsthoorn G, Franco FF, Moraes EM. Revisiting phylogeny, systematics, and biogeography of a Pleistocene radiation. AMERICAN JOURNAL OF BOTANY 2023; 110:1-17. [PMID: 36708517 DOI: 10.1002/ajb2.16134] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 05/11/2023]
Abstract
PREMISE Pilosocereus (Cactaceae) is an important dry forest element in all subregions and transitional zones of the neotropics, with the highest diversity in eastern Brazil. The genus is subdivided into informal taxonomic groups; however, most of these are not supported by recent molecular phylogenetic inferences. This lack of confidence is probably due to the use of an insufficient number of loci and the complexity of cactus diversification. Here, we explored the species relationships in Pilosocereus in more detail, integrating multilocus phylogenetic approaches with the assessment of the ancestral range and the effect of geography on diversification shifts. METHODS We used 28 nuclear, plastid, and mitochondrial loci from 54 plant samples of 31 Pilosocereus species for phylogenetic analyses. We used concatenated and coalescent phylogenetic trees and Bayesian models to estimate the most likely ancestral range and diversification shifts. RESULTS All Pilosocereus species were clustered in the same branch, except P. bohlei. The phylogenetic relationships were more associated with the geographic distribution than taxonomic affinities among taxa. The genus began diversifying during the Plio-Pleistocene transition in the Caatinga domain and experienced an increased diversification rate during the Calabrian age. CONCLUSIONS We recovered a well-supported multispecies coalescent phylogeny. Our results refine the pattern of rapid diversification of Pilosocereus species across neotropical drylands during the Pleistocene and highlight the need for taxonomic rearrangements in the genus. We recovered a pulse of diversification during the Pleistocene that was likely driven by multiple dispersal and vicariance events within and among the Caatinga, Cerrado, and Atlantic Forest domains.
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Affiliation(s)
- Monique Romeiro-Brito
- Departamento de Biologia, Universidade Federal de São Carlos (UFSCar), Sorocaba, SP, 18052-780, Brazil
| | - Gulzar Khan
- Institute for Biology and Environmental Sciences, Carl von Ossietzky-University Oldenburg, Carl von Ossietzky-Str. 9-11, 26111, Oldenburg, Germany
| | - Manolo F Perez
- Departamento de Genética e Evolução, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, 13565-905, Brazil
| | - Daniela C Zappi
- Programa de Pós-Graduação em Botânica, Instituto de Ciências Biológicas, Universidade de Brasília (UNB), PO Box 04457, Brasília, DF, 70910-970, Brazil
| | - Nigel P Taylor
- University of Gibraltar, Gibraltar Botanic Gardens Campus, The Alameda, PO Box 843, GX11 1AA, Gibraltar
| | | | - Fernando F Franco
- Departamento de Biologia, Universidade Federal de São Carlos (UFSCar), Sorocaba, SP, 18052-780, Brazil
| | - Evandro M Moraes
- Departamento de Biologia, Universidade Federal de São Carlos (UFSCar), Sorocaba, SP, 18052-780, Brazil
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Burley JT, Orzechowski SCM, Sin SYW, Edwards SV. Whole-genome phylogeography of the blue-faced honeyeater (Entomyzon cyanotis) and discovery and characterization of a neo-Z chromosome. Mol Ecol 2023; 32:1248-1270. [PMID: 35797346 DOI: 10.1111/mec.16604] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 06/22/2022] [Accepted: 07/04/2022] [Indexed: 11/28/2022]
Abstract
Whole-genome surveys of genetic diversity and geographic variation often yield unexpected discoveries of novel structural variation, which long-read DNA sequencing can help clarify. Here, we report on whole-genome phylogeography of a bird exhibiting classic vicariant geographies across Australia and New Guinea, the blue-faced honeyeater (Entomyzon cyanotis), and the discovery and characterization of a novel neo-Z chromosome by long-read sequencing. Using short-read genome-wide SNPs, we inferred population divergence events within E. cyanotis across the Carpentarian and other biogeographic barriers during the Pleistocene (~0.3-1.7 Ma). Evidence for introgression between nonsister populations supports a hypothesis of reticulate evolution around a triad of dynamic barriers around Pleistocene Lake Carpentaria between Australia and New Guinea. During this phylogeographic survey, we discovered a large (134 Mbp) neo-Z chromosome and we explored its diversity, divergence and introgression landscape. We show that, as in some sylvioid passerine birds, a fusion occurred between chromosome 5 and the Z chromosome to form a neo-Z chromosome; and in E. cyanotis, the ancestral pseudoautosomal region (PAR) appears nonrecombinant between Z and W, along with most of the fused chromosome 5. The added recombination-suppressed portion of the neo-Z (~37.2 Mbp) displays reduced diversity and faster population genetic differentiation compared with the ancestral-Z. Yet, the new PAR (~17.4 Mbp) shows elevated diversity and reduced differentiation compared to autosomes, potentially resulting from introgression. In our case, long-read sequencing helped clarify the genomic landscape of population divergence on autosomes and sex chromosomes in a species where prior knowledge of genome structure was still incomplete.
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Affiliation(s)
- John T Burley
- Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, USA.,Department of Evolutionary Biology, Evolutionary Biology Centre (EBC), Uppsala University, Uppsala, Sweden.,Department of Ecology Evolution and Organismal Biology, Brown University, Providence, Rhode Island, USA.,Institute at Brown for Environment and Society, Brown University, Providence, Rhode Island, USA
| | | | - Simon Yung Wa Sin
- Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, USA.,School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Scott V Edwards
- Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, USA
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7
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Edwards SV, Tonini JFR, Mcinerney N, Welch C, Beerli P. Multilocus phylogeography, population genetics and niche evolution of Australian brown and black-tailed treecreepers (Aves: Climacteris). Biol J Linn Soc Lond 2023. [DOI: 10.1093/biolinnean/blac144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Abstract
The Carpentarian barrier across north-eastern Australia is a major biogeographic barrier and a generator of biodiversity within the Australian Monsoonal Tropics. Here we present a continent-wide analysis of mitochondrial (control region) and autosomal (14 anonymous loci) sequence and indel variation and niche modelling of brown and black-tailed treecreepers (Climacteris picumnus and Climacteris melanurus), a clade with a classic distribution on either side of the Carpentarian barrier. mtDNA control region sequences exhibited reciprocal monophyly and strong differentiation (Fst = 0.91), and revealed a signature of a recent selective sweep in C. picumnus. A variety of tests support an isolation-with-migration model of divergence, albeit with low levels of gene flow across the Carpentarian barrier and a divergence time between species of ~1.7–2.8 Mya. Palaeoecological niche models show that both range size as measured by available habitat and estimated historical population sizes of both species declined in the past ~600 kyr and that the area of interspecific range overlap was never historically large, perhaps decreasing opportunities for extensive gene flow. The relatively long divergence time and low opportunity for gene flow may have facilitated speciation more so than in other co-distributed bird taxa across the Australian Monsoonal Tropics.
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Affiliation(s)
- Scott V Edwards
- Museum of Comparative Zoology, Harvard University , Cambridge, MA 02138 , USA
- Department of Organismic and Evolutionary Biology, Harvard University , Cambridge, MA 02138 , USA
| | - João F R Tonini
- Museum of Comparative Zoology, Harvard University , Cambridge, MA 02138 , USA
- Department of Organismic and Evolutionary Biology, Harvard University , Cambridge, MA 02138 , USA
- Department of Biology, University of Richmond , Richmond, VA 23217 , USA
| | - Nancy Mcinerney
- Smithsonian's National Zoo and Conservation Biology Institute , NW, Washington, DC 20008 , USA
| | - Corey Welch
- Department of Biology and Burke Museum, University of Washington , Seattle, WA 98195 , USA
- STEM Scholars Program, Student Innovation Center, Iowa State University , Ames, IA 50011 , USA
| | - Peter Beerli
- Department of Scientific Computing, Florida State University, Florida State University , Tallahassee, FL 32306 , USA
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Genome Evolution and the Future of Phylogenomics of Non-Avian Reptiles. Animals (Basel) 2023; 13:ani13030471. [PMID: 36766360 PMCID: PMC9913427 DOI: 10.3390/ani13030471] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/13/2023] [Accepted: 01/15/2023] [Indexed: 02/01/2023] Open
Abstract
Non-avian reptiles comprise a large proportion of amniote vertebrate diversity, with squamate reptiles-lizards and snakes-recently overtaking birds as the most species-rich tetrapod radiation. Despite displaying an extraordinary diversity of phenotypic and genomic traits, genomic resources in non-avian reptiles have accumulated more slowly than they have in mammals and birds, the remaining amniotes. Here we review the remarkable natural history of non-avian reptiles, with a focus on the physical traits, genomic characteristics, and sequence compositional patterns that comprise key axes of variation across amniotes. We argue that the high evolutionary diversity of non-avian reptiles can fuel a new generation of whole-genome phylogenomic analyses. A survey of phylogenetic investigations in non-avian reptiles shows that sequence capture-based approaches are the most commonly used, with studies of markers known as ultraconserved elements (UCEs) especially well represented. However, many other types of markers exist and are increasingly being mined from genome assemblies in silico, including some with greater information potential than UCEs for certain investigations. We discuss the importance of high-quality genomic resources and methods for bioinformatically extracting a range of marker sets from genome assemblies. Finally, we encourage herpetologists working in genomics, genetics, evolutionary biology, and other fields to work collectively towards building genomic resources for non-avian reptiles, especially squamates, that rival those already in place for mammals and birds. Overall, the development of this cross-amniote phylogenomic tree of life will contribute to illuminate interesting dimensions of biodiversity across non-avian reptiles and broader amniotes.
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Tarkhnishvili D, Hille A, Waller T, Todua M, Murtskhvaladze M, Böhme W. Morphological trends and genetic divergence in anacondas, genus Eunectes Wagler, 1830 (Serpentes: Boidae). AMPHIBIA-REPTILIA 2022. [DOI: 10.1163/15685381-bja10114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
The genus Eunectes Wagler, 1830 is divided into four nominal species: E. murinus (Linnaeus, 1758), E. notaeus Cope, 1862, E. deschauenseei Dunn and Conant, 1936, and E. beniensis Dirksen, 2002 (E. barbouri Dunn and Conant, 1936 being a synonym of E. murinus). We analyze multivariate morphological traits (scalation, coloration pattern, and body shape), sequences of one mitochondrial and five nuclear genes, and genetic patterns of randomly amplified DNA (RAPD) markers of historical geographical samples representing all known taxa. We show that the genus consists of two distinct evolutionary lineages, ‘big-bodied’ (only E. murinus) and ‘small-bodied’ anacondas. The latter group includes three morphologically distinct allopatric forms, E. notaeus, E. deschauenseei, and E. beniensis. Both phenotypically and genotypically, E. beniensis is more distant from E. notaeus and E. deschauenseei than the two latter species are from each other. However, the three nominal species of small-bodied anacondas did not show clear reciprocal monophyly and did not reach the stage of complete lineage sorting. Instead, genetic data support the presence of three incipient species of small-bodied anacondas.
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Affiliation(s)
- David Tarkhnishvili
- Institute of Ecology, Ilia State University, Cholokashvili Str. 3 5 , 0162 Tbilisi, Georgia
| | - Axel Hille
- Altheider Weg 13, 32805 Horn-Bad Meinberg, Germany
| | - Thomas Waller
- Fundación Biodiversidad Argentina (FBA), Suipacha 1311 – 5 Piso, C1011AAC C. Autónoma de Buenos Aires, Argentina
| | - Mariam Todua
- Institute of Ecology, Ilia State University, Cholokashvili Str. 3 5 , 0162 Tbilisi, Georgia
| | - Marine Murtskhvaladze
- Institute of Ecology, Ilia State University, Cholokashvili Str. 3 5 , 0162 Tbilisi, Georgia
| | - Wolfgang Böhme
- Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113 Bonn, Germany
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Samayoa AP, Struthers CD, Trnski T, Roberts CD, Liggins L. Molecular phylogenetics reveals the evolutionary history of marine fishes (Actinopterygii) endemic to the subtropical islands of the Southwest Pacific. Mol Phylogenet Evol 2022; 176:107584. [PMID: 35843570 DOI: 10.1016/j.ympev.2022.107584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/03/2022] [Accepted: 05/12/2022] [Indexed: 11/16/2022]
Abstract
Remote oceanic islands of the Pacific host elevated levels of actinopterygian (ray-finned fishes) endemism. Characterizing the evolutionary histories of these endemics has provided insight into the generation and maintenance of marine biodiversity in many regions. The subtropical islands of Lord Howe, Norfolk, and Rangitāhua (Kermadec) in the Southwest Pacific are yet to be comprehensively studied. Here, we characterize the spatio-temporal diversification of marine fishes endemic to these Southwest Pacific islands by combining molecular phylogenies and the geographic distribution of species. We built Bayesian ultrametric trees based on open-access and newly generated sequences for five mitochondrial and ten nuclear loci, and using fossil data for time calibration. We present the most comprehensive phylogenies to date for marine ray-finned fish genera, comprising 34 species endemic to the islands, including the first phylogenetic placements for 11 endemics. Overall, our topologies confirm the species status of all endemics, including three undescribed taxa. Our phylogenies highlight the predominant affinity of these endemics with the Australian fish fauna (53%), followed by the East Pacific (15%), and individual cases where the closest sister taxon of our endemic is found in the Northwest Pacific and wider Indo-Pacific. Nonetheless, for a quarter of our focal endemics, their geographic affinity remains unresolved due to sampling gaps within their genera. Our divergence time estimates reveal that the majority of endemic lineages (67.6%) diverged after the emergence of Lord Howe (6.92 Ma), the oldest subtropical island in the Southwest Pacific, suggesting that these islands have promoted diversification. However, divergence ages of some endemics pre-date the emergence of the islands, suggesting they may have originated outside of these islands, or, in some cases, ages may be overestimated due to unsampled taxa. To fully understand the role of the Southwest Pacific subtropical islands as a 'cradle' for diversification, our study advocates for further regional surveys focused on tissue collection for DNA analysis.
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Affiliation(s)
- André P Samayoa
- School of Natural Sciences, Massey University, Auckland 0745, New Zealand.
| | - Carl D Struthers
- Museum of New Zealand Te Papa Tongarewa, P.O. Box 467, Wellington, New Zealand.
| | - Thomas Trnski
- Natural Sciences, Auckland Museum Tāmaki Paenga Hira, Auckland 1010, New Zealand.
| | - Clive D Roberts
- Museum of New Zealand Te Papa Tongarewa, P.O. Box 467, Wellington, New Zealand.
| | - Libby Liggins
- School of Natural Sciences, Massey University, Auckland 0745, New Zealand; Natural Sciences, Auckland Museum Tāmaki Paenga Hira, Auckland 1010, New Zealand.
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11
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Laczkó L, Jordán S, Sramkó G. The
RadOrgMiner
pipeline: Automated genotyping of organellar loci from
RADseq
data. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.13937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Levente Laczkó
- MTA‐DE “Lendület” Evolutionary Phylogenomics Research Group, Egyetem tér 1 H‐4032 Debrecen Hungary
- Department of Botany University of Debrecen Egyetem tér 1, Debrecen, H‐4032 Hungary
- ELKH‐ DE Conservation Biology Research Group, Egyetem tér 1, Debrecen, H‐4032 Hungary
- Department of Metagenomics University of Debrecen Nagyerdei körút 98., Debrecen, H‐4032 Hungary
| | - Sándor Jordán
- Department of Botany University of Debrecen Egyetem tér 1, Debrecen, H‐4032 Hungary
- Juhász‐Nagy Pál Doctoral School University of Debrecen Egyetem tér 1, Debrecen, H‐4032 Hungary
| | - Gábor Sramkó
- MTA‐DE “Lendület” Evolutionary Phylogenomics Research Group, Egyetem tér 1 H‐4032 Debrecen Hungary
- Department of Botany University of Debrecen Egyetem tér 1, Debrecen, H‐4032 Hungary
- ELKH‐ DE Conservation Biology Research Group, Egyetem tér 1, Debrecen, H‐4032 Hungary
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12
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Wang S, Zhao X, Sun K, Bateer H, Wang W. The Genome Sequence of Brucella abortus vaccine strain A19 provides insights on its virulence attenuation compared to Brucella abortus strain 9-941. Gene 2022; 830:146521. [PMID: 35447245 DOI: 10.1016/j.gene.2022.146521] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/20/2021] [Accepted: 04/15/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Brucellosis is a widespread disease that affects animals and humans. The live attenuated Brucella abortus A19 strain is used for vaccination against brucellosis in China. In addition, the main mechanisms supporting the residual toxicity of A19 have not been elucidated. Here, we performed a comprehensive comparative analysis of the genome-wide sequence of A19 against the whole genome sequences of the published virulent reference strain 9-941. The primary objective of this study was to identify candidate virulence genes by systematically comparing the genomic sequences between the two genomes. RESULTS This analysis revealed two deletion regions in the A19 genome, in which all included large fragments of 63 bp, and one of their gene function is related to ABC transporter permease protein. In addition, we have identified minor mutations in important virulence-related genes that can be used to determine the underlying mechanisms of virulence attenuation. The function of its virulence gene covers LysR family transcriptional regulator, outer membrane, MFS transporter and oxidoreductase etc. At the same time, a PCR differential diagnosis method was constructed, which can distinguish A19, S19 and most other commonly used Brucella viruent strains and vaccine strains. CONCLUSION The data may help to provide resources for further detailed analysis of mechanisms for other Brucella vaccines. It laid the foundation for further distinguishing between vaccine immunity and virulent strains infection.
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Affiliation(s)
- Shuyi Wang
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture/College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Hohhot, Inner Mongolia 010031, China
| | - Xueliang Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Ke Sun
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture/College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
| | - Huhe Bateer
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture/College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
| | - Wenlong Wang
- Key Laboratory of Clinical Diagnosis and Treatment Technology in Animal Disease, Ministry of Agriculture/College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.
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13
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Takagui FH, Baumgärtner L, Viana P, Lima MCC, Bitencourt JDA, Venere PC, Lui RL, Moreira-Filho O, Feldberg E, Almeida Simões F, Birindelli JL, Giuliano-Caetano L. Karyotype Evolution of Talking Thorny Catfishes Anadoras (Doradidae, Astrodoradinae): A Process Mediated by Structural Rearrangements and Intense Reorganization of Repetitive DNAs. Cytogenet Genome Res 2022; 162:64-75. [PMID: 35500552 DOI: 10.1159/000523747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 02/17/2022] [Indexed: 11/19/2022] Open
Abstract
Anadoras is a thorny catfish genus widespread through the Amazon and Paraguay river basins. It includes 2 nominal species, A. grypus and A. weddellii, plus Anadoras sp. "araguaia," an undescribed species only recognized morphologically. Since Anadoras occupies a basal position within the Astrodoradinae phylogeny, it is crucial to identify its cytogenetic features to comprehend the mechanisms involved in the chromosomal diversification of this subfamily. Therefore, we performed a comparative cytogenetic analysis including all species of Anadoras. Furthermore, we applied a species delimitation analysis based on 600 bp of the mitochondrial cytochrome oxidase subunit 1 (CO1) gene to investigate the taxonomic status of the species. Cytogenetic markers revealed a high degree of similarity among Anadoras weddellii and Anadoras sp. "araguaia," both have 2n = 56 chromosomes (24m + 10sm + 22st/a), single NOR sites on acrocentric pair 28, and 5S rDNA sites on submetacentric pair 15. A. grypus has the most divergent chromosomal characteristics because, even though it also has 2n = 56 chromosomes, it exhibits several differences in the chromosome formula, heterochromatin distribution, and number/position of the rDNA sites. In sum, we believe that the chromosome diversification of Anadoras is due to 4 mechanisms: centric fusion, pericentric/paracentric inversions, nonreciprocal translocations, and activity of transposable elements. Additionally, our phylogenetic tree revealed well-supported clades and, by barcode species delimitation analysis, confirmed the existence of 3 molecular operational taxonomic units, including the putative new species Anadoras sp. "araguaia."
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Affiliation(s)
- Fábio Hiroshi Takagui
- Laboratory of Animal Cytogenetics, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - Lucas Baumgärtner
- Cytogenetic Laboratory, Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Brazil
| | - Patrik Viana
- Laboratory of Animal Genetics, National Institute of Amazonian Research, Manaus, Brazil
| | - Moema C C Lima
- Laboratory of Genetics and Animal Ecology, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - Jamille de A Bitencourt
- Cytogenetic Laboratory, Department of Biological Sciences, State University of Southwest of Bahia, Jequié, Brazil
| | - Paulo Cesar Venere
- Laboratory of Animal Cytogenetics and Genetics, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Roberto Laridondo Lui
- Cytogenetic Laboratory, Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Brazil
| | - Orlando Moreira-Filho
- Laboratory of Molecular Biodiversity and Conservation, Department of Genetics and Evolution, Federal University of São Carlos, São Carlos, Brazil
| | - Eliana Feldberg
- Laboratory of Animal Genetics, National Institute of Amazonian Research, Manaus, Brazil
| | - Fernanda Almeida Simões
- Laboratory of Genetics and Animal Ecology, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
| | - José Luis Birindelli
- Museum of Zoology, Department of Animal and Plant Biology, CCB, Londrina State University, Londrina, Brazil
| | - Lucia Giuliano-Caetano
- Laboratory of Animal Cytogenetics, Department of General Biology, CCB, State University of Londrina, Londrina, Brazil
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14
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Genetic and Phenotypic Characteristics of the Salmo trutta Complex in Italy. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12073219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Salmonid fish have become ecological and research models of study in the field of conservation genetics and genomics. Over the last decade, brown trout have received a high level of interest in research and publications. The term Salmo trutta complex is used to indicate the large number of geographic forms present in the species Salmo trutta. In Europe, the S. trutta complex consists (based on mitochondrial DNA control region analysis) of seven major evolutionary lineages: Atlantic (AT), Mediterranean (ME), Adriatic (AD), Danubian (DA), Marmoratus (MA), Duero (DU) and Tigris (TI). In several nations, the difficulty of identifying some lineages derives from their wide phenotypic and geographic plasticity and the presence of mixed lineages (due to introgressive hybridization with domestic AT populations). In Italy, the S. trutta complex populations living in the Tyrrhenian area and on the main islands (Sicily, Sardinia and Corsica) showed high genetic diversity. Currently, on the Italian Red List, the protected (near threatened) populations are the AD and ME lineages. Recent studies based on traditional (mitochondrial and nuclear markers) and NGS (next-generation sequencing) analyses have clarified some genetic differences between the populations of the Tyrrhenian region, Sicily, Sardinia and Corsica. Native populations in Sardinia belong to the AD lineage, while those living in Corsica are mainly characterized by the AD, MA and ME haplotypes. In Sicily, in the area of the Iblei mountains, an AT lineage (North African) exists. According to some authors, the term Salmo macrostigma should only be used for populations in North Africa. The use of genotyping methods based on mtDNA and nuclear markers and the latest generation sequencing techniques can improve the study of populations and evolutionary lineages in areas where there are overlaps and hybridization phenomena.
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15
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Conklin JR, Verkuil YI, Battley PF, Hassell CJ, Ten Horn J, Johnson JA, Tomkovich PS, Baker AJ, Piersma T, Fontaine MC. Global flyway evolution in red knots Calidris canutus and genetic evidence for a Nearctic refugium. Mol Ecol 2022; 31:2124-2139. [PMID: 35106871 PMCID: PMC9545425 DOI: 10.1111/mec.16379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 12/13/2021] [Accepted: 01/14/2022] [Indexed: 11/30/2022]
Abstract
Present‐day ecology and population structure are the legacies of past climate and habitat perturbations, and this is particularly true for species that are widely distributed at high latitudes. The red knot, Calidris canutus, is an arctic‐breeding, long‐distance migratory shorebird with six recognized subspecies defined by differences in morphology, migration behavior, and annual cycle phenology, in a global distribution thought to have arisen just since the last glacial maximum (LGM). We used nextRAD sequencing of 10,881 single‐nucleotide polymorphisms (SNPs) to assess the neutral genetic structure and phylogeographic history of 172 red knots representing all known global breeding populations. Using population genetics approaches, including model‐based scenario‐testing in an approximate Bayesian computation (ABC) framework, we infer that red knots derive from two main lineages that diverged ca. 34,000 years ago, and thus most probably persisted at the LGM in both Palearctic and Nearctic refugia, followed by at least two instances of secondary contact and admixture. Within two Beringian subspecies (C. c. roselaari and rogersi), we detected previously unknown genetic structure among sub‐populations sharing a migratory flyway, reflecting additional complexity in the phylogeographic history of the region. Conversely, we found very weak genetic differentiation between two Nearctic populations (rufa and islandica) with clearly divergent migratory phenotypes and little or no apparent contact throughout the annual cycle. Together, these results suggest that relative gene flow among migratory populations reflects a complex interplay of historical, geographical, and ecological factors.
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Affiliation(s)
- Jesse R Conklin
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands
| | - Yvonne I Verkuil
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands
| | - Phil F Battley
- Wildlife and Ecology Group, School of Agriculture and Environment, Massey University, Palmerston North, 4442, New Zealand
| | - Chris J Hassell
- Global Flyway Network, PO Box 3089, Broome, WA, 6725, Australia
| | - Job Ten Horn
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB, Den Burg, Texel, The Netherlands
| | - James A Johnson
- U.S. Fish & Wildlife Service, Migratory Bird Management, 1011 E. Tudor Road, MS 201, Anchorage, Alaska, 99503, USA
| | - Pavel S Tomkovich
- Zoological Museum, Moscow MV Lomonosov State University, Bolshaya Nikitskaya Str. 6, Moscow, 125009, Russia
| | - Allan J Baker
- Department of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, ON, M5S 2C6, Canada
| | - Theunis Piersma
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands.,Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB, Den Burg, Texel, The Netherlands
| | - Michaël C Fontaine
- Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, P.O. Box 11103, 9700 CC, Groningen, The Netherlands.,MIVEGEC, University of Montpellier, CNRS, IRD, Montpellier, France.,Montpellier Ecology and Evolution of Diseases Network (MEEDiN), Montpellier, France
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16
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McLean BS, Bell KC, Cook JA. SNP-based Phylogenomic Inference in Holarctic Ground Squirrels (Urocitellus). Mol Phylogenet Evol 2022; 169:107396. [PMID: 35031463 DOI: 10.1016/j.ympev.2022.107396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/02/2021] [Accepted: 12/08/2021] [Indexed: 11/24/2022]
Abstract
Resolution of rapid evolutionary radiations requires harvesting maximal signal from phylogenomic datasets. However, studies of non-model clades often target conserved loci that are characterized by reduced information content, which can negatively affect gene tree precision and species tree accuracy. Single nucleotide polymorphism (SNP)-based methods are an underutilized but potentially valuable tool for estimating phylogeny and divergence times because they do not rely on resolved gene trees, allowing information from many or all variant loci to be leveraged in species tree reconstruction. We evaluated the utility of SNP-based methods in resolving phylogeny of Holarctic ground squirrels (Urocitellus), a radiation that has been difficult to disentangle, even in prior phylogenomic studies. We inferred phylogeny from a dataset of >3,000 ultraconserved element loci (UCEs) using two methods (SNAPP, SVDquartets) and compared our results with a new mitogenome phylogeny. We also systematically evaluated how phasing of UCEs improves per-locus information content, and inference of topology and other parameters within each of these SNP-based methods. Phasing improved topological resolution and branch length estimation at shallow levels (within species complexes), but less so at deeper levels, likely reflecting true uncertainty due to ancestral polymorphisms segregating in these rapidly diverging lineages. We resolved several key clades in Urocitellus and present targeted opportunities for future phylogenomic inquiry. Our results extend the roadmap for use of SNPs to address vertebrate radiations and support comparative analyses at multiple temporal scales.
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Affiliation(s)
- Bryan S McLean
- University of North Carolina Greensboro, Department of Biology, Greensboro, NC 27402 USA.
| | - Kayce C Bell
- Natural History Museum of Los Angeles County, Department of Mammalogy, Los Angeles, CA 90007 USA.
| | - Joseph A Cook
- University of New Mexico, Department of Biology and Museum of Southwestern Biology, Albuquerque, NM 87131 USA.
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17
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Li F, Xu X, Zhang Z, Liu F, Yang Z, Li D. Multilocus species delimitation and phylogeny of the genus
Calommata
(Araneae, Atypidae) in southern China. ZOOL SCR 2022. [DOI: 10.1111/zsc.12525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Fan Li
- Centre for Behavioral Ecology & Evolution College of Life Sciences Hubei University Wuhan China
- College of Life Sciences University of Chinese Academy of Sciences Beijing China
| | - Xin Xu
- Centre for Behavioral Ecology & Evolution College of Life Sciences Hubei University Wuhan China
- College of Life Sciences Hunan Normal University Changsha China
| | - Zengtao Zhang
- Centre for Behavioral Ecology & Evolution College of Life Sciences Hubei University Wuhan China
| | - Fengxiang Liu
- Centre for Behavioral Ecology & Evolution College of Life Sciences Hubei University Wuhan China
| | - Zizhong Yang
- National‐Local Joint Engineering Research Center of Entomoceutics Dali University Dali China
| | - Daiqin Li
- Department of Biological Sciences National University of Singapore Singapore Singapore
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18
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Blais BR, Smith BE, Placyk JS, Casper GS, Spellman GM. Phylogeography of the smooth greensnake, Opheodrys vernalis (Squamata: Colubridae): divergent lineages and variable demographics in a widely distributed yet enigmatic species. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Phylogeographic studies can uncover robust details about the population structure, demographics, and diversity of species. The smooth greensnake, Opheodrys vernalis, is a small, cryptic snake occupying mesic grassland and sparsely wooded habitats. Although O. vernalis has a wide geographical range, many metapopulations are patchy and some are declining. We used mitochondrial DNA and double digest restriction-site associated DNA sequencing to construct the first phylogeographic assessment of O. vernalis. Genomic analysis of 119 individuals (mitochondrial DNA) and a subset of another 45 smooth greensnakes (nuclear DNA; N = 3031 single nucleotide polymorphisms) strongly supports two longitudinally separated lineages, with admixture in the Great Lakes region. Post-Pleistocene secondary contact best explains admixture from populations advancing northwards. Overall, populations expressed low heterozygosity, variable inbreeding rates, and moderate to high differentiation. Disjunct populations in the Rocky Mountains and central Great Plains regions might be contracting relicts, whereas northerly populations in more continuous mesic habitats (e.g., Prairie Pothole region, southern Canada) had signals of population expansion. Broadly, conservation management efforts should be focused on local populations, because habitat connectivity may facilitate gene flow and genetic diversity.
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Affiliation(s)
- Brian R Blais
- School of Natural Sciences, Black Hills State University, Spearfish, SD, USA
| | - Brian E Smith
- School of Natural Sciences, Black Hills State University, Spearfish, SD, USA
| | - John S Placyk
- Department of Biology, University of Texas at Tyler, 3900 University Boulevard, Tyler, TX, USA
| | - Gary S Casper
- University of Wisconsin-Milwaukee Field Station, Saukville, WI, USA
| | - Garth M Spellman
- Department of Zoology, Denver Museum of Nature & Science, 2001 Colorado Boulevard, Denver, CO, USA
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19
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Dokan K, Kawamura S, Teshima KM. Effects of single nucleotide polymorphism ascertainment on population structure inferences. G3-GENES GENOMES GENETICS 2021; 11:6237890. [PMID: 33871576 PMCID: PMC8496283 DOI: 10.1093/g3journal/jkab128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 04/08/2021] [Indexed: 11/14/2022]
Abstract
Single nucleotide polymorphism (SNP) data are widely used in research on natural populations. Although they are useful, SNP genotyping data are known to contain bias, normally referred to as ascertainment bias, because they are conditioned by already confirmed variants. This bias is introduced during the genotyping process, including the selection of populations for novel SNP discovery and the number of individuals involved in the discovery panel and selection of SNP markers. It is widely recognized that ascertainment bias can cause inaccurate inferences in population genetics and several methods to address these bias issues have been proposed. However, especially in natural populations, it is not always possible to apply an ideal ascertainment scheme because natural populations tend to have complex structures and histories. In addition, it was not fully assessed if ascertainment bias has the same effect on different types of population structure. Here, we examine the effects of bias produced during the selection of population for SNP discovery and consequent SNP marker selection processes under three demographic models: the island, stepping-stone, and population split models. Results show that site frequency spectra and summary statistics contain biases that depend on the joint effect of population structure and ascertainment schemes. Additionally, population structure inferences are also affected by ascertainment bias. Based on these results, it is recommended to evaluate the validity of the ascertainment strategy prior to the actual typing process because the direction and extent of ascertainment bias vary depending on several factors.
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Affiliation(s)
- Kotaro Dokan
- Graduate School of System Life Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Sayu Kawamura
- Graduate School of System Life Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Kosuke M Teshima
- Department of Biology, Kyushu University, Fukuoka 819-0395, Japan
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20
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Camacho-Sanchez M, Leonard JA. Mitogenomes Reveal Multiple Colonization of Mountains by Rattus in Sundaland. J Hered 2021; 111:392-404. [PMID: 32485737 PMCID: PMC7423070 DOI: 10.1093/jhered/esaa014] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 05/25/2020] [Indexed: 01/16/2023] Open
Abstract
Tropical mountains are cradles of biodiversity and endemism. Sundaland, tropical Southeast Asia, hosts 3 species of Rattus endemic to elevations above 2000 m with an apparent convergence in external morphology: Rattus korinchi and R. hoogerwerfi from Sumatra, and R. baluensis from Borneo. A fourth one, R. tiomanicus, is restricted to lowland elevations across the whole region. The origins of these endemics are little known due to the absence of a robust phylogenetic framework. We use complete mitochondrial genomes from the 3 high altitude Rattus, and several related species to determine their relationships, date divergences, reconstruct their history of colonization, and test for selection on the mitochondrial DNA. We show that mountain colonization happened independently in Borneo (<390 Kya) and Sumatra (~1.38 Mya), likely from lowland lineages. The origin of the Bornean endemic R. baluensis is very recent and its genetic diversity is nested within the diversity of R. tiomanicus. We found weak evidence of positive selection in the high-elevation lineages and attributed the greater nonsynonymous mutations on these branches (specially R. baluensis) to lesser purifying selection having acted on the terminal branches in the phylogeny.
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Affiliation(s)
- Miguel Camacho-Sanchez
- Conservation and Evolutionary Genetics Group, Estación Biológica de Doñana (EBD-CSIC), Sevilla, Spain
| | - Jennifer A Leonard
- Conservation and Evolutionary Genetics Group, Estación Biológica de Doñana (EBD-CSIC), Sevilla, Spain
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21
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Ruttenberg DM, VanKuren NW, Nallu S, Yen SH, Peggie D, Lohman DJ, Kronforst MR. The evolution and genetics of sexually dimorphic 'dual' mimicry in the butterfly Elymnias hypermnestra. Proc Biol Sci 2021; 288:20202192. [PMID: 33434461 DOI: 10.1098/rspb.2020.2192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Sexual dimorphism is a major component of morphological variation across the tree of life, but the mechanisms underlying phenotypic differences between sexes of a single species are poorly understood. We examined the population genomics and biogeography of the common palmfly Elymnias hypermnestra, a dual mimic in which female wing colour patterns are either dark brown (melanic) or bright orange, mimicking toxic Euploea and Danaus species, respectively. As males always have a melanic wing colour pattern, this makes E. hypermnestra a fascinating model organism in which populations vary in sexual dimorphism. Population structure analysis revealed that there were three genetically distinct E. hypermnestra populations, which we further validated by creating a phylogenomic species tree and inferring historical barriers to gene flow. This species tree demonstrated that multiple lineages with orange females do not form a monophyletic group, and the same is true of clades with melanic females. We identified two single nucleotide polymorphisms (SNPs) near the colour patterning gene WntA that were significantly associated with the female colour pattern polymorphism, suggesting that this gene affects sexual dimorphism. Given WntA's role in colour patterning across Nymphalidae, E. hypermnestra females demonstrate the repeatability of the evolution of sexual dimorphism.
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Affiliation(s)
- Dee M Ruttenberg
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
| | - Nicholas W VanKuren
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
| | - Sumitha Nallu
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
| | - Shen-Horn Yen
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Djunijanti Peggie
- Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences (LIPI), Cibinong-Bogor 16911, Indonesia
| | - David J Lohman
- Biology Department, City College of New York, City University of New York, New York, NY 10031, USA.,PhD Program in Biology, Graduate Center, City University of New York, New York, NY 10016, USA.,Entomology Section, National Museum of Natural History, Manila 1000, Philippines
| | - Marcus R Kronforst
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
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22
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High-Throughput Genotyping Technologies in Plant Taxonomy. Methods Mol Biol 2021; 2222:149-166. [PMID: 33301093 DOI: 10.1007/978-1-0716-0997-2_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Molecular markers provide researchers with a powerful tool for variation analysis between plant genomes. They are heritable and widely distributed across the genome and for this reason have many applications in plant taxonomy and genotyping. Over the last decade, molecular marker technology has developed rapidly and is now a crucial component for genetic linkage analysis, trait mapping, diversity analysis, and association studies. This chapter focuses on molecular marker discovery, its application, and future perspectives for plant genotyping through pangenome assemblies. Included are descriptions of automated methods for genome and sequence distance estimation, genome contaminant analysis in sequence reads, genome structural variation, and SNP discovery methods.
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23
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Lima CS, Magalhães RF, Santos FR. Conservation issues using discordant taxonomic and evolutionary units: a case study of the American manatee (Trichechus manatus, Sirenia). WILDLIFE RESEARCH 2021. [DOI: 10.1071/wr20197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The delimitation of evolutionarily significant units (ESUs) frequently results in controversy, but prioritising populations with evolutionary independence is essential for effective in situ conservation management. The American manatee (Trichechus manatus) is distributed along subtropical and tropical coastal waters from Florida (USA) to Alagoas (Brazil), and two subspecies are traditionally recognised, namely, T. m. latirostris, restricted to the Florida peninsula, and T. m. manatus, found in the remaining areas. However, this subspecific classification is not supported by genetic and morphologic evidence, which, rather, recognises two deeply differentiated populations or ESUs called Atlantic (Brazil) and Caribbean (from Venezuela to Florida). In this viewpoint paper, we compare both intraspecific divisions of T. manatus and the conservation implications. First, we used all available mtDNA evidence to test the genealogical clustering of the two American manatee ESUs by using a tree-based coalescent method. Second, we have used different models under a coalescent framework to estimate the historic gene flow among manatee populations. The analysis of the spatial distribution of mtDNA clusters confirmed the existence of the two suggested ESUs, rather than the two claimed subspecies. Furthermore, the best model to explain historic migration indicates that Brazilian manatees belong to an isolated population, whereas Florida and Caribbean populations are connected by more recent gene flow. These results have confirmed that T. manatus of the Caribbean, Gulf of Mexico and Florida belong to the same deme or Caribbean ESU, and the relatively isolated population inhabiting the Atlantic coast of Brazil belongs to the Atlantic ESU. Furthermore, both ESUs are separated by an interspecific hybrid zone (with the Amazonian manatee) located around the mouth of the Amazon River towards the Guianas coastline. The subdivision of two ESUs is also highly supported by karyotypic, morphological and ecological data, and is in clear disagreement with the traditional subspecies designations and the IUCN priorities, which manages Brazilian manatees as part of the Antillean manatee subspecies (T. m. manatus). Rather, Brazilian manatees should be considered as a full priority for conservation and require further taxonomic research; because of their deep history of isolation, they present high genetic and morphologic differentiation from all other American manatees.
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24
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Suárez-Esquivel M, Chaves-Olarte E, Moreno E, Guzmán-Verri C. Brucella Genomics: Macro and Micro Evolution. Int J Mol Sci 2020; 21:E7749. [PMID: 33092044 PMCID: PMC7589603 DOI: 10.3390/ijms21207749] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 01/25/2023] Open
Abstract
Brucella organisms are responsible for one of the most widespread bacterial zoonoses, named brucellosis. The disease affects several species of animals, including humans. One of the most intriguing aspects of the brucellae is that the various species show a ~97% similarity at the genome level. Still, the distinct Brucella species display different host preferences, zoonotic risk, and virulence. After 133 years of research, there are many aspects of the Brucella biology that remain poorly understood, such as host adaptation and virulence mechanisms. A strategy to understand these characteristics focuses on the relationship between the genomic diversity and host preference of the various Brucella species. Pseudogenization, genome reduction, single nucleotide polymorphism variation, number of tandem repeats, and mobile genetic elements are unveiled markers for host adaptation and virulence. Understanding the mechanisms of genome variability in the Brucella genus is relevant to comprehend the emergence of pathogens.
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Affiliation(s)
- Marcela Suárez-Esquivel
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
| | - Esteban Chaves-Olarte
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 1180, Costa Rica;
| | - Edgardo Moreno
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
| | - Caterina Guzmán-Verri
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 1180, Costa Rica;
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Bocalini F, Bolívar-Leguizamón SD, Silveira LF, Bravo GA. Comparative phylogeographic and demographic analyses reveal a congruent pattern of sister relationships between bird populations of the northern and south-central Atlantic Forest. Mol Phylogenet Evol 2020; 154:106973. [PMID: 33059067 DOI: 10.1016/j.ympev.2020.106973] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 09/08/2020] [Accepted: 09/28/2020] [Indexed: 11/30/2022]
Abstract
The Pernambuco Center of Endemism (PCE) is the northernmost strip of the Atlantic Forest (AF). Biogeographic affinities among avifaunas in the PCE, the southern-central Atlantic Forest (SCAF), and Amazonia (AM) have not been studied comprehensively, and current patterns of genetic diversity in the PCE remain unclear. The interplay between species' ecological attributes and historical processes, such as Pleistocene climate fluctuations or the appearance of rivers, may have affected population genetic structures in the PCE. Moreover, the role of past connections between the PCE and AM and the elevational distribution of species in assembling the PCE avifauna remain untested. Here, we investigated the biogeographic history of seven taxa endemic to the PCE within a comparative phylogeographic framework based on a mean of 3,618 independent single nucleotide polymorphisms (SNPs) extracted from flanking regions of ultraconserved elements (UCEs) and one mitochondrial gene. We found that PCE populations were more closely related to SCAF populations than they were to those in AM, regardless of their elevational range, with divergence times placed during the Mid-Pleistocene. These splits were consistent with a pattern of allopatric divergence with gene flow until the upper Pleistocene and no signal of rapid changes in population sizes. Our results support the existence of a Pleistocene refugium driving current genetic diversity in the PCE, thereby rejecting the role of the São Francisco River as a primary barrier for population divergence. Additionally, we found that connections with Amazonia also played a significant role in assembling the PCE avifauna through subsequent migration events.
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Affiliation(s)
- Fernanda Bocalini
- Museu de Zoologia da Universidade de São Paulo, 04263-000 Ipiranga, São Paulo, SP, Brazil; Departamento de Zoologia do Instituto de Biociências, Universidade de São Paulo, 05508-090 São Paulo, SP, Brazil.
| | | | - Luís F Silveira
- Museu de Zoologia da Universidade de São Paulo, 04263-000 Ipiranga, São Paulo, SP, Brazil
| | - Gustavo A Bravo
- Museu de Zoologia da Universidade de São Paulo, 04263-000 Ipiranga, São Paulo, SP, Brazil; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA; Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA
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Arantes LS, Vilaça ST, Mazzoni CJ, Santos FR. New Genetic Insights About Hybridization and Population Structure of Hawksbill and Loggerhead Turtles From Brazil. J Hered 2020; 111:444-456. [DOI: 10.1093/jhered/esaa024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022] Open
Abstract
Abstract
An extremely high incidence of hybridization among sea turtles is found along the Brazilian coast. This atypical phenomenon and its impact on sea turtle conservation can be elucidated through research focused on the evolutionary history of sea turtles. We assessed high-quality multilocus haplotypes of 143 samples of the 5 species of sea turtles that occur along the Brazilian coast to investigate the hybridization process and the population structure of hawksbill (Eretmochelys imbricata) and loggerhead turtles (Caretta caretta). The multilocus data were initially used to characterize interspecific hybrids. Introgression (F2 hybrids) was only confirmed in hatchlings of F1 hybrid females (hawksbill × loggerhead), indicating that introgression was either previously overestimated and F2 hybrids may not survive to adulthood, or the first-generation hybrid females nesting in Brazil were born as recent as few decades ago. Phylogenetic analyses using nuclear markers recovered the mtDNA-based Indo-Pacific and Atlantic lineages for hawksbill turtles, demonstrating a deep genetic divergence dating from the early Pliocene. In addition, loggerhead turtles that share a common feeding area and belong to distinct Indo-Pacific and Atlantic mtDNA clades present no clear genetic differentiation at the nuclear level. Finally, our results indicate that hawksbill and loggerhead rookeries along the Brazilian coast are likely connected by male-mediated gene flow.
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Affiliation(s)
- Larissa S Arantes
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, Belo Horizonte - MG, Brazil
| | - Sibelle T Vilaça
- Berlin Center for Genomics in Biodiversity Research (BeGenDiv), Königin-Luise-Straße 6–8, Berlin, Germany (Vilaça and Mazzoni)
- Evolutionary Genetics Department, Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, Berlin, Germany
| | - Camila J Mazzoni
- Berlin Center for Genomics in Biodiversity Research (BeGenDiv), Königin-Luise-Straße 6–8, Berlin, Germany (Vilaça and Mazzoni)
- Evolutionary Genetics Department, Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, Berlin, Germany
| | - Fabrício R Santos
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, Belo Horizonte - MG, Brazil
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Bolívar-Leguizamón SD, Silveira LF, Derryberry EP, Brumfield RT, Bravo GA. Phylogeography of the Variable Antshrike (Thamnophilus caerulescens), a South American passerine distributed along multiple environmental gradients. Mol Phylogenet Evol 2020; 148:106810. [DOI: 10.1016/j.ympev.2020.106810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/23/2020] [Accepted: 03/25/2020] [Indexed: 12/21/2022]
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Morales‐Hojas R, Gonzalez‐Uriarte A, Alvira Iraizoz F, Jenkins T, Alderson L, Kruger T, Hall MJ, Greenslade A, Shortall CR, Bell JR. Population genetic structure and predominance of cyclical parthenogenesis in the bird cherry-oat aphid Rhopalosiphum padi in England. Evol Appl 2020; 13:1009-1025. [PMID: 32431749 PMCID: PMC7232763 DOI: 10.1111/eva.12917] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/18/2019] [Accepted: 01/06/2020] [Indexed: 11/28/2022] Open
Abstract
Genetic diversity is the determinant for pest species' success and vector competence. Understanding the ecological and evolutionary processes that determine the genetic diversity is fundamental to help identify the spatial scale at which pest populations are best managed. In the present study, we present the first comprehensive analysis of the genetic diversity and evolution of Rhopalosiphum padi, a major pest of cereals and a main vector of the barley yellow dwarf virus (BYDV), in England. We have used a genotyping-by-sequencing approach to study whether (a) there is any underlying population genetic structure at a national and regional scale in this pest that can disperse long distances; (b) the populations evolve as a response to environmental change and selective pressures; and (c) the populations comprise anholocyclic lineages. Individual R. padi were collected using the Rothamsted Insect Survey's suction-trap network at several sites across England between 2004 and 2016 as part of the RIS long-term nationwide surveillance. Results identified two genetic clusters in England that mostly corresponded to a North-South division, although gene flow is ongoing between the two subpopulations. These genetic clusters do not correspond to different life cycle types, and cyclical parthenogenesis is predominant in England. Results also show that there is dispersal with gene flow across England, although there is a reduction between the northern and southern sites with the south-western population being the most genetically differentiated. There is no evidence for isolation by distance and other factors such as primary host distribution, uncommon in the south and absent in the south-west, could influence the dispersal patterns. Finally, results also show no evidence for the evolution of the R. padi population, and it is demographically stable despite the ongoing environmental change. These results are discussed in view of their relevance to pest management and the transmission of BYDV.
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Affiliation(s)
- Ramiro Morales‐Hojas
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | | | - Fernando Alvira Iraizoz
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Todd Jenkins
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Lynda Alderson
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Tracey Kruger
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Mike J. Hall
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Alex Greenslade
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - Chris R. Shortall
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
| | - James R. Bell
- Rothamsted Insect Survey, Biointeractions and Crop Protection DepartmentRothamsted ResearchHarpendenUK
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Bagley JC, Uribe-Convers S, Carlsen MM, Muchhala N. Utility of targeted sequence capture for phylogenomics in rapid, recent angiosperm radiations: Neotropical Burmeistera bellflowers as a case study. Mol Phylogenet Evol 2020; 152:106769. [PMID: 32081762 DOI: 10.1016/j.ympev.2020.106769] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 02/06/2023]
Abstract
Targeted sequence capture is a promising approach for large-scale phylogenomics. However, rapid evolutionary radiations pose significant challenges for phylogenetic inference (e.g. incomplete lineages sorting (ILS), phylogenetic noise), and the ability of targeted nuclear loci to resolve species trees despite such issues remains poorly studied. We test the utility of targeted sequence capture for inferring phylogenetic relationships in rapid, recent angiosperm radiations, focusing on Burmeistera bellflowers (Campanulaceae), which diversified into ~130 species over less than 3 million years. We compared phylogenies estimated from supercontig (exons plus flanking sequences), exon-only, and flanking-only datasets with 506-546 loci (~4.7 million bases) for 46 Burmeistera species/lineages and 10 outgroup taxa. Nuclear loci resolved backbone nodes and many congruent internal relationships with high support in concatenation and coalescent-based species tree analyses, and inferences were largely robust to effects of missing taxa and base composition biases. Nevertheless, species trees were incongruent between datasets, and gene trees exhibited remarkably high levels of conflict (~4-60% congruence, ~40-99% conflict) not simply driven by poor gene tree resolution. Higher gene tree heterogeneity at shorter branches suggests an important role of ILS, as expected for rapid radiations. Phylogenetic informativeness analyses also suggest this incongruence has resulted from low resolving power at short internal branches, consistent with ILS, and homoplasy at deeper nodes, with exons exhibiting much greater risk of incorrect topologies due to homoplasy than other datasets. Our findings suggest that targeted sequence capture is feasible for resolving rapid, recent angiosperm radiations, and that results based on supercontig alignments containing nuclear exons and flanking sequences have higher phylogenetic utility and accuracy than either alone. We use our results to make practical recommendations for future target capture-based studies of Burmeistera and other rapid angiosperm radiations, including that such studies should analyze supercontigs to maximize the phylogenetic information content of loci.
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Affiliation(s)
- Justin C Bagley
- Department of Biology, University of Missouri-St. Louis, St. Louis, MO 63121, USA; Department of Biology, Virginia Commonwealth University, Richmond, VA 23284, USA.
| | - Simon Uribe-Convers
- Department of Biology, University of Missouri-St. Louis, St. Louis, MO 63121, USA
| | - Mónica M Carlsen
- Research Department, Science and Conservation Division, Missouri Botanical Garden, St. Louis, MO 63110, USA
| | - Nathan Muchhala
- Department of Biology, University of Missouri-St. Louis, St. Louis, MO 63121, USA
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Maltseva AL, Varfolomeeva MA, Lobov AA, Tikanova P, Panova M, Mikhailova NA, Granovitch AI. Proteomic similarity of the Littorinid snails in the evolutionary context. PeerJ 2020; 8:e8546. [PMID: 32095363 PMCID: PMC7024583 DOI: 10.7717/peerj.8546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 01/10/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND The introduction of DNA-based molecular markers made a revolution in biological systematics. However, in cases of very recent divergence events, the neutral divergence may be too slow, and the analysis of adaptive part of the genome is more informative to reconstruct the recent evolutionary history of young species. The advantage of proteomics is its ability to reflect the biochemical machinery of life. It may help both to identify rapidly evolving genes and to interpret their functions. METHODS Here we applied a comparative gel-based proteomic analysis to several species from the gastropod family Littorinidae. Proteomes were clustered to assess differences related to species, geographic location, sex and body part, using data on presence/absence of proteins in samples and data on protein occurrence frequency in samples of different species. Cluster support was assessed using multiscale bootstrap resampling and the stability of clustering-using cluster-wise index of cluster stability. Taxon-specific protein markers were derived using IndVal method. Proteomic trees were compared to consensus phylogenetic tree (based on neutral genetic markers) using estimates of the Robinson-Foulds distance, the Fowlkes-Mallows index and cophenetic correlation. RESULTS Overall, the DNA-based phylogenetic tree and the proteomic similarity tree had consistent topologies. Further, we observed some interesting deviations of the proteomic littorinid tree from the neutral expectations. (1) There were signs of molecular parallelism in two Littoraria species that phylogenetically are quite distant, but live in similar habitats. (2) Proteome divergence was unexpectedly high between very closely related Littorina fabalis and L. obtusata, possibly reflecting their ecology-driven divergence. (3) Conservative house-keeping proteins were usually identified as markers for cryptic species groups ("saxatilis" and "obtusata" groups in the Littorina genus) and for genera (Littoraria and Echinolittorina species pairs), while metabolic enzymes and stress-related proteins (both potentially adaptively important) were often identified as markers supporting species branches. (4) In all five Littorina species British populations were separated from the European mainland populations, possibly reflecting their recent phylogeographic history. Altogether our study shows that proteomic data, when interpreted in the context of DNA-based phylogeny, can bring additional information on the evolutionary history of species.
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Affiliation(s)
- Arina L. Maltseva
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
| | - Marina A. Varfolomeeva
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
| | - Arseniy A. Lobov
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
- Laboratory of Regenerative Biomedicine, Institute of Cytology Russian Academy of Sciences, St. Petersburg, Russia
| | - Polina Tikanova
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
| | - Marina Panova
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
- Department of Marine Sciences, Tjärnö, University of Gothenburg, Sweden
| | - Natalia A. Mikhailova
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
- Centre of Cell Technologies, Institute of Cytology Russian Academy of Sciences, St. Petersburg, Russia
| | - Andrei I. Granovitch
- Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia
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31
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Dianat M, Darvish J, Aliabadian M, Siahsarvie R, Krystufek B, Nicolas V. Systematics and evolution of the libyan jird based on molecular and morphometric data. J ZOOL SYST EVOL RES 2020. [DOI: 10.1111/jzs.12335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Malahat Dianat
- Department of Biology, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Jamshid Darvish
- Department of Biology, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Mansour Aliabadian
- Department of Biology, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Roohollah Siahsarvie
- Department of Biology, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
- Rodentology Research Department, Institute of Applied Zoology, Faculty of Sciences Ferdowsi University of Mashhad Mashhad Iran
| | | | - Violaine Nicolas
- Institut de Systematique, Evolution, Biodiversite, ISYEB‐UMR 7205‐CNRS, MNHN, UPMC EPHE, Museum National d’Histoire Naturelle, Sorbonne Universites Paris France
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Soley-Guardia M, Carnaval AC, Anderson RP. Sufficient versus optimal climatic stability during the Late Quaternary: using environmental quality to guide phylogeographic inferences in a Neotropical montane system. J Mammal 2019. [DOI: 10.1093/jmammal/gyz162] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
AbstractQuaternary climatic oscillations affected species distributions worldwide, creating cycles of connectivity and isolation that impacted population demography and promoted lineage divergence. These effects have been well studied in temperate regions. Taxa inhabiting mesic montane habitats in tropical ecosystems show high levels of endemism and diversification in the distinct mountain ranges they inhabit; such a pattern has commonly been ascribed to past climatic oscillations, but few phylogeographic studies have tested this hypothesis. Here, we combine ecological niche models of species distributions with molecular data to study phylogeographic patterns in two rodents endemic to the highlands of Costa Rica and western Panama (Reithrodontomys creper and Nephelomys devius). In so doing, we apply a novel approach that incorporates a basic ecological principle: the expected positive relationship between environmental suitability and population abundance. Specifically, we use niche models to predict potential patterns of population connectivity and stability of different suitability levels during climatic extremes of the last glacial–interglacial cycle; we then test these predictions with population genetic analyses of a mitochondrial and a nuclear marker. The detailed predictions arising from the different levels of suitability were moderately to highly congruent with the molecular data depending on the species. Overall, results suggest that in these tropical montane ecosystems, cycles of population connectivity and isolation followed a pattern opposite to that typically described for temperate or lowland tropical ecosystems: namely, higher connectivity during the colder glacials, with isolation in montane refugia during the interglacials, including today. Nevertheless, the individualistic patterns for each species indicate a potentially wide gamut of phylogeographic histories reflecting particularities of their niches. Taken together, this study illustrates how phylogeographic inferences may benefit from niche model outputs that provide more detailed predictions of connectivity and finer characterizations of potential refugia through time.
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Affiliation(s)
- Mariano Soley-Guardia
- Department of Biology, City College of New York, City University of New York, New York, NY, USA
- Program in Biology, Graduate Center, City University of New York, New York, NY, USA
- Escuela de Biología, Universidad de Costa Rica, Ciudad Universitaria San Pedro, Costa Rica
| | - Ana Carolina Carnaval
- Department of Biology, City College of New York, City University of New York, New York, NY, USA
- Program in Biology, Graduate Center, City University of New York, New York, NY, USA
| | - Robert P Anderson
- Department of Biology, City College of New York, City University of New York, New York, NY, USA
- Program in Biology, Graduate Center, City University of New York, New York, NY, USA
- Division of Vertebrate Zoology (Mammalogy), American Museum of Natural History, New York, NY, USA
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Balmori-de la Puente A, Nores C, Román J, Fernández-González A, Aymerich P, Gosálbez J, Escoda L, Castresana J. Size increase without genetic divergence in the Eurasian water shrew Neomys fodiens. Sci Rep 2019; 9:17375. [PMID: 31758027 PMCID: PMC6874603 DOI: 10.1038/s41598-019-53891-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 11/06/2019] [Indexed: 11/18/2022] Open
Abstract
When a population shows a marked morphological change, it is important to know whether that population is genetically distinct; if it is not, the novel trait could correspond to an adaptation that might be of great ecological interest. Here, we studied a subspecies of water shrew, Neomys fodiens niethammeri, which is found in a narrow strip of the northern Iberian Peninsula. This subspecies presents an abrupt increase in skull size when compared to the rest of the Eurasian population, which has led to the suggestion that it is actually a different species. Skulls obtained from owl pellets collected over the last 50 years allowed us to perform a morphometric analysis in addition to an extensive multilocus analysis based on short intron fragments successfully amplified from these degraded samples. Interestingly, no genetic divergence was detected using either mitochondrial or nuclear data. Additionally, an allele frequency analysis revealed no significant genetic differentiation. The absence of genetic divergence and differentiation revealed here indicate that the large form of N. fodiens does not correspond to a different species and instead represents an extreme case of size increase, of possible adaptive value, which deserves further investigation.
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Affiliation(s)
- Alfonso Balmori-de la Puente
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain
| | - Carlos Nores
- Indurot, Universidad de Oviedo, Campus de Mieres, 33600, Mieres, Asturias, Spain
| | - Jacinto Román
- Department of Conservation Biology, Doñana Biological Station, CSIC, Calle Americo Vespucio 26, 41092, Sevilla, Spain
| | | | | | - Joaquim Gosálbez
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Avinguda Diagonal 645, 08028, Barcelona, Spain
| | - Lídia Escoda
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain
| | - Jose Castresana
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37, 08003, Barcelona, Spain.
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Iguchi Y, Nakao R, Takata K, Kitagawa T. Development of a single-copy nuclear DNA sequence marker for the detection of artificially caused genetic introgressions in Japanese wild medaka populations. CONSERV GENET RESOUR 2019. [DOI: 10.1007/s12686-019-01106-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sousa-Santos C, Jesus TF, Fernandes C, Robalo JI, Coelho MM. Fish diversification at the pace of geomorphological changes: evolutionary history of western Iberian Leuciscinae (Teleostei: Leuciscidae) inferred from multilocus sequence data. Mol Phylogenet Evol 2018; 133:263-285. [PMID: 30583043 DOI: 10.1016/j.ympev.2018.12.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 01/05/2023]
Abstract
The evolutionary history of western Iberian Leuciscinae, obligatory freshwater fish, is directly linked to the evolution of the hydrographic network of the Iberian Peninsula after its isolation from the rest of Europe, which involved dramatic rearrangements such as the transition from endorheic lakes to open basins draining to the Atlantic. Previous phylogenetic research on western Iberian leuciscines, using mainly mitochondrial DNA and more recently one or two nuclear genes, has found contradictory results and there remain many unresolved issues regarding species relationships, taxonomy, and evolutionary history. Moreover, there is a lack of integration between phylogenetic and divergence time estimates and information on the timing of geomorphological changes and paleobasin rearrangements in the Iberian Peninsula. This study presents the first comprehensive fossil-calibrated multilocus coalescent species tree of western Iberian Leuciscinae (including 14 species of Achondrostoma, Iberochondrostoma, Pseudochondrostoma and Squalius endemic to the Iberian Peninsula, seven of which endemic to Portugal) based on seven nuclear genes, and from which we infer their biogeographic history by comparing divergence time estimates to known dated geological events. The phylogenetic pattern suggests slow-paced evolution of leuciscines during the Early-Middle Miocene endorheic phase of the main Iberian river basins, with the shift to exorheism in the late Neogene-Quaternary allowing westward dispersals that resulted in many cladogenetic events and a high rate of endemism in western Iberia. The results of this study also: (i) confirm the paraphyly of S. pyrenaicus with respect to S. carolitertii, and thus the possible presence of a new taxon in the Portuguese Tagus currently assigned to S. pyrenaicus; (ii) support the taxonomic separation of the Guadiana and Sado populations of S. pyrenaicus; (iii) show the need for further population sampling and taxonomic research to clarify the phylogenetic status of A. arcasii from the Minho basin and of the I. lusitanicum populations in the Sado and Tagus basins; and (iv) indicate that A. occidentale, I. olisiponensis and P. duriensis are the most ancient lineages within their respective genera.
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Affiliation(s)
- C Sousa-Santos
- MARE - Marine and Environmental Sciences Centre, ISPA-Instituto Universitário, Rua Jardim do Tabaco 34, 1149-041 Lisbon, Portugal.
| | - T F Jesus
- cE3c - Center for Ecology, Evolution and Environmental Changes, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Av. Professor Egaz Moniz, 1649-028 Lisbon, Portugal(2).
| | - C Fernandes
- cE3c - Center for Ecology, Evolution and Environmental Changes, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
| | - J I Robalo
- MARE - Marine and Environmental Sciences Centre, ISPA-Instituto Universitário, Rua Jardim do Tabaco 34, 1149-041 Lisbon, Portugal.
| | - M M Coelho
- cE3c - Center for Ecology, Evolution and Environmental Changes, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
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36
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Stobie CS, Cunningham MJ, Oosthuizen CJ, Bloomer P. Finding stories in noise: Mitochondrial portraits from RAD data. Mol Ecol Resour 2018; 19:191-205. [DOI: 10.1111/1755-0998.12953] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Cora Sabriel Stobie
- Molecular Ecology and Evolution Programme, Department of Biochemistry, Genetics and Microbiology University of Pretoria Hatfield, Pretoria South Africa
| | - Michael J. Cunningham
- Molecular Ecology and Evolution Programme, Department of Biochemistry, Genetics and Microbiology University of Pretoria Hatfield, Pretoria South Africa
| | - Carel J. Oosthuizen
- Molecular Ecology and Evolution Programme, Department of Biochemistry, Genetics and Microbiology University of Pretoria Hatfield, Pretoria South Africa
| | - Paulette Bloomer
- Molecular Ecology and Evolution Programme, Department of Biochemistry, Genetics and Microbiology University of Pretoria Hatfield, Pretoria South Africa
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37
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Cardoso LW, Silva-Brandão KL, Duarte M. Adhemarius eurysthenes (Felder, 1874) (Lepidoptera, Sphingidae) in the Atlantic Rain Forest: A phylogeographic perspective. ZOOL ANZ 2018. [DOI: 10.1016/j.jcz.2018.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Kang Q, Schardl CL, Moore N, Yoshida R. CURatio: Genome-wide phylogenomic analysis method using ratios of total branch lengths. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2018; 17:10.1109/TCBB.2018.2878564. [PMID: 30387738 PMCID: PMC7372714 DOI: 10.1109/tcbb.2018.2878564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Evolutionary hypotheses provide important underpinnings of biological and medical sciences, and comprehensive, genome-wide understanding of evolutionary relationships among organisms are needed to test and refine such hypotheses. Theory and empirical evidence clearly indicate that phylogenies (trees) of different genes (loci) should not display precisely matching topologies. The main reason for such phylogenetic incongruence is reticulated evolutionary history of most species due to meiotic sexual recombination in eukaryotes, or horizontal transfers of genetic material in prokaryotes. Nevertheless, many genes should display topologically related phylogenies, and should group into one or more (for genetic hybrids) clusters in poly-dimensional "tree space". Unusual evolutionary histories or effects of selection may result in "outlier" genes with phylogenies that fall outside the main distribution(s) of trees in tree space. We present a new phylogenomic method, CURatio, which uses ratios of total branch lengths in gene trees to help identify phylogenetic outliers in a given set of ortholog groups from multiple genomes. An advantage of CURatio over other methods is that genes absent from and/or duplicated in some genomes can be included in the analysis. We conducted a simulation study under the coalescent model, and showed that, given sufficient species depth and topological difference, these ratios are significantly higher for the "outlier" gene phylogenies. Also, we applied CURatio to a set of annotated genomes of the fungal family, Clavicipitaceae, and identified alkaloid biosynthesis genes as outliers, probably due to a history of duplication and loss. The source code is available at https://github.com/QiwenKang/CURatio, and the empirical data set on Clavicipitaceae and simulated data set are available at Mendeley https://data.mendeley.com/datasets/mrxts7wjrr/1.
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39
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Liu Y, Liu S, Yeh CF, Zhang N, Chen G, Que P, Dong L, Li SH. The first set of universal nuclear protein-coding loci markers for avian phylogenetic and population genetic studies. Sci Rep 2018; 8:15723. [PMID: 30356056 PMCID: PMC6200822 DOI: 10.1038/s41598-018-33646-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 09/21/2018] [Indexed: 11/24/2022] Open
Abstract
Multiple nuclear markers provide genetic polymorphism data for molecular systematics and population genetic studies. They are especially required for the coalescent-based analyses that can be used to accurately estimate species trees and infer population demographic histories. However, in avian evolutionary studies, these powerful coalescent-based methods are hindered by the lack of a sufficient number of markers. In this study, we designed PCR primers to amplify 136 nuclear protein-coding loci (NPCLs) by scanning the published Red Junglefowl (Gallus gallus) and Zebra Finch (Taeniopygia guttata) genomes. To test their utility, we amplified these loci in 41 bird species representing 23 Aves orders. The sixty-three best-performing NPCLs, based on high PCR success rates, were selected which had various mutation rates and were evenly distributed across 17 avian autosomal chromosomes and the Z chromosome. To test phylogenetic resolving power of these markers, we conducted a Neoavian phylogenies analysis using 63 concatenated NPCL markers derived from 48 whole genomes of birds. The resulting phylogenetic topology, to a large extent, is congruence with results resolved by previous whole genome data. To test the level of intraspecific polymorphism in these makers, we examined the genetic diversity in four populations of the Kentish Plover (Charadrius alexandrinus) at 17 of NPCL markers chosen at random. Our results showed that these NPCL markers exhibited a level of polymorphism comparable with mitochondrial loci. Therefore, this set of pan-avian nuclear protein-coding loci has great potential to facilitate studies in avian phylogenetics and population genetics.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Biocontrol, Department of Ecology/School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China
| | - Simin Liu
- State Key Laboratory of Biocontrol, Department of Ecology/School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China
| | - Chia-Fen Yeh
- Department of Life Sciences, National Taiwan Normal University, Taipei, 116, Taiwan, China
| | - Nan Zhang
- State Key Laboratory of Biocontrol, Department of Ecology/School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China
| | - Guoling Chen
- State Key Laboratory of Biocontrol, Department of Ecology/School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China
| | - Pinjia Que
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China
| | - Lu Dong
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China.
| | - Shou-Hsien Li
- Department of Life Sciences, National Taiwan Normal University, Taipei, 116, Taiwan, China.
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40
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Tang Q, Edwards SV, Rheindt FE. Rapid diversification and hybridization have shaped the dynamic history of the genus Elaenia. Mol Phylogenet Evol 2018; 127:522-533. [DOI: 10.1016/j.ympev.2018.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 04/11/2018] [Accepted: 05/08/2018] [Indexed: 01/04/2023]
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41
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From America to Eurasia: a multigenomes history of the genus Abies. Mol Phylogenet Evol 2018; 125:14-28. [DOI: 10.1016/j.ympev.2018.03.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 03/05/2018] [Accepted: 03/07/2018] [Indexed: 11/24/2022]
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42
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Sturaro MJ, Rodrigues MT, Colli GR, Knowles LL, Avila-Pires TC. Integrative taxonomy of the lizards Cercosaura ocellata species complex (Reptilia: Gymnophthalmidae). ZOOL ANZ 2018. [DOI: 10.1016/j.jcz.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Sea surface currents and geographic isolation shape the genetic population structure of a coral reef fish in the Indian Ocean. PLoS One 2018. [PMID: 29522547 PMCID: PMC5844546 DOI: 10.1371/journal.pone.0193825] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In this contribution, we determine the genetic population structure in the Skunk Clownfish (Amphiprion akallopsisos) across the Indian Ocean, and on a smaller geographic scale in the Western Indian Ocean (WIO). Highly restricted gene flow was discovered between populations on either side of the Indian Ocean using the control region as a mitochondrial marker (mtDNA). We verify this conclusion using 13 microsatellite markers and infer fine scale genetic structuring within the WIO. In total 387 samples from 21 sites were analysed using mtDNA and 13 microsatellite loci. Analysis included estimation of genetic diversity and population differentiation. A haplotype network was inferred using mtDNA. Nuclear markers were used in Bayesian clustering and a principal component analysis. Both markers confirmed strong genetic differentiation between WIO and Eastern Indian Ocean (EIO) populations, and a shallower population structure among Malagasy and East African mainland populations. Limited gene flow across the Mozambique Channel may be explained by its complex oceanography, which could cause local retention of larvae, limiting dispersal between Madagascar and the East African coast. Two other potential current-mediated barriers to larval dispersal suggested in the WIO, the split of the SEC at approximately 10° S and the convergence of the Somali Current with the East African Coast Current at approximately 3° S, were not found to form a barrier to gene flow in this species.
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44
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Alternative methods of phylogenetic inference for the Patagonian lizard group Liolaemus elongatus-kriegi (Iguania: Liolaemini) based on mitochondrial and nuclear markers. Mol Phylogenet Evol 2018; 120:158-169. [DOI: 10.1016/j.ympev.2017.11.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 11/07/2017] [Accepted: 11/27/2017] [Indexed: 11/18/2022]
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45
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Mason NA, Olvera‐Vital A, Lovette IJ, Navarro‐Sigüenza AG. Hidden endemism, deep polyphyly, and repeated dispersal across the Isthmus of Tehuantepec: Diversification of the White-collared Seedeater complex (Thraupidae: Sporophila torqueola). Ecol Evol 2018; 8:1867-1881. [PMID: 29435260 PMCID: PMC5792519 DOI: 10.1002/ece3.3799] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 12/04/2017] [Accepted: 12/11/2017] [Indexed: 12/21/2022] Open
Abstract
Phenotypic and genetic variation are present in all species, but lineages differ in how variation is partitioned among populations. Examining phenotypic clustering and genetic structure within a phylogeographic framework can clarify which biological processes have contributed to extant biodiversity in a given lineage. Here, we investigate genetic and phenotypic variation among populations and subspecies within a Neotropical songbird complex, the White-collared Seedeater (Sporophila torqueola) of Central America and Mexico. We combine measurements of morphology and plumage patterning with thousands of nuclear loci derived from ultraconserved elements (UCEs) and mitochondrial DNA to evaluate population differentiation. We find deep levels of molecular divergence between two S. torqueola lineages that are phenotypically diagnosable: One corresponds to S. t. torqueola along the Pacific coast of Mexico, and the other includes S. t. morelleti and S. t. sharpei from the Gulf Coast of Mexico and Central America. Surprisingly, these two lineages are strongly differentiated in both nuclear and mitochondrial markers, and each is more closely related to other Sporophila species than to one another. We infer low levels of gene flow between these two groups based on demographic models, suggesting multiple independent evolutionary lineages within S. torqueola have been obscured by coarse-scale similarity in plumage patterning. These findings improve our understanding of the biogeographic history of this lineage, which includes multiple dispersal events out of South America and across the Isthmus of Tehuantepec into Mesoamerica. Finally, the phenotypic and genetic distinctiveness of the range-restricted S. t. torqueola highlights the Pacific Coast of Mexico as an important region of endemism and conservation priority.
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Affiliation(s)
- Nicholas A. Mason
- Department of Ecology and Evolutionary BiologyCornell UniversityIthacaNYUSA
- Fuller Evolutionary Biology ProgramCornell Laboratory of OrnithologyIthacaNYUSA
| | | | - Irby J. Lovette
- Department of Ecology and Evolutionary BiologyCornell UniversityIthacaNYUSA
- Fuller Evolutionary Biology ProgramCornell Laboratory of OrnithologyIthacaNYUSA
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46
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Fontanella FM, Victoriano PF, Sites JW. Secondary contact, gene flow and clinal variation between two mtDNA lineages of the Northeastern ringneck snake Diadophis punctatus edwardsii (Colubroidea: Dipsadidae). Zool J Linn Soc 2018. [DOI: 10.1093/zoolinnean/zlx036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
| | - Pedro F Victoriano
- Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile
| | - Jack W Sites
- Department of Biology and Bean Life Science Museum, Brigham Young University, USA
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47
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Drovetski SV, Reeves AB, Red'kin YA, Fadeev IV, Koblik EA, Sotnikov VN, Voelker G. Multi-locus reassessment of a striking discord between mtDNA gene trees and taxonomy across two congeneric species complexes. Mol Phylogenet Evol 2017; 120:43-52. [PMID: 29224786 DOI: 10.1016/j.ympev.2017.11.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 11/30/2017] [Accepted: 11/30/2017] [Indexed: 11/19/2022]
Abstract
Resolving relationships among members of the yellow and citrine wagtail species complexes is among the greatest challenges in avian systematics due to arguably the most dramatic disagreements between traditional taxonomy and mtDNA phylogeny. Each species complex is divided into three geographically cohesive mtDNA clades. Each clade from one species complex has a sister from the other complex. Furthermore, one cross-complex pair is more distantly related to the remaining two pairs than are several other wagtail species. To test mtDNA gene tree topology, we sequenced the mtDNA ND2 gene and 11 nuclear introns for seven wagtail species. Our mtDNA gene tree reconstruction supported the results of previous studies, thereby confirming the disagreement between mtDNA phylogeny and taxonomy. However, our multi-locus species tree which used mtDNA clades as "taxa" was consistent with traditional taxonomy regardless of whether mtDNA was included in the analysis or not. Our multi-locus data suggest that despite the presence of strongly supported, geographically structured mtDNA variation, the mtDNA gene tree misrepresents the evolutionary history of the yellow and citrine wagtail complexes. This mito-nuclear discord results from mtDNA representing the biogeographic, but not evolutionary history of these recently radiated Palearctic wagtails.
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Affiliation(s)
- Sergei V Drovetski
- Division of Birds, National Museum of Natural History, Smithsonian Institution, 1000 Constitution Ave NW, Washington, DC 20004, USA.
| | - Andrew B Reeves
- Department of Biological Sciences, University of Alaska Anchorage, 3211 Providence Dr, Anchorage, AK 99508, USA.
| | - Yaroslav A Red'kin
- Department of Ornithology, Zoological Museum of Moscow State University, 6 Bol'shaya Nikitskaya St, Moscow 103009, Russia.
| | - Igor V Fadeev
- Department of Collections, State Darwin Museum, 57/1 Vavilova St, Moscow 117292, Russia.
| | - Evgeniy A Koblik
- Department of Ornithology, Zoological Museum of Moscow State University, 6 Bol'shaya Nikitskaya St, Moscow 103009, Russia.
| | | | - Gary Voelker
- Department of Wildlife and Fisheries Sciences, Texas A&M University, 454 Throckmorton St, College Station, TX 77843, USA.
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48
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Martoni F, Bulman SR, Pitman A, Armstrong KF. Elongation Factor-1α Accurately Reconstructs Relationships Amongst Psyllid Families (Hemiptera: Psylloidea), with Possible Diagnostic Implications. JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:2618-2622. [PMID: 29040629 DOI: 10.1093/jee/tox261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Indexed: 06/07/2023]
Abstract
The superfamily Psylloidea (Hemiptera: Sternorrhyncha) lacks a robust multigene phylogeny. This impedes our understanding of the evolution of this group of insects and, consequently, an accurate identification of individuals, of their plant host associations, and their roles as vectors of economically important plant pathogens. The conserved nuclear gene elongation factor-1 alpha (EF-1α) has been valuable as a higher-level phylogenetic marker in insects and it has also been widely used to investigate the evolution of intron/exon structure. To explore evolutionary relationships among Psylloidea, polymerase chain reaction amplification and nucleotide sequencing of a 250-bp EF-1α gene fragment was applied to psyllids belonging to five different families. Introns were detected in three individuals belonging to two families. The nine genera belonging to the family Aphalaridae all lacked introns, highlighting the possibility of using intron presence/absence as a diagnostic tool at a family level. When paired with cytochrome oxidase I gene sequences, the 250 bp EF-1α sequence appeared to be a very promising higher-level phylogenetic marker for psyllids.
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Affiliation(s)
- Francesco Martoni
- Bio-Protection Research Centre, Lincoln University, New Zealand
- Australian Plant Biosecurity Cooperative Research Centre, Australia
| | - Simon R Bulman
- Australian Plant Biosecurity Cooperative Research Centre, Australia
- The New Zealand Institute for Plant & Food Research Limited, New Zealand
- Better Border Biosecurity (B3), New Zealand
| | - Andrew Pitman
- Bio-Protection Research Centre, Lincoln University, New Zealand
- The New Zealand Institute for Plant & Food Research Limited, New Zealand
| | - Karen F Armstrong
- Bio-Protection Research Centre, Lincoln University, New Zealand
- Australian Plant Biosecurity Cooperative Research Centre, Australia
- The New Zealand Institute for Plant & Food Research Limited, New Zealand
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49
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Abstract
Phylogeography, and its extensions into comparative phylogeography, have their roots in the layering of gene trees across geography, a paradigm that was greatly facilitated by the nonrecombining, fast evolution provided by animal mtDNA. As phylogeography moves into the era of next-generation sequencing, the specter of reticulation at several levels-within loci and genomes in the form of recombination and across populations and species in the form of introgression-has raised its head with a prominence even greater than glimpsed during the nuclear gene PCR era. Here we explore the theme of reticulation in comparative phylogeography, speciation analysis, and phylogenomics, and ask how the centrality of gene trees has fared in the next-generation era. To frame these issues, we first provide a snapshot of multilocus phylogeographic studies across the Carpentarian Barrier, a prominent biogeographic barrier dividing faunas spanning the monsoon tropics in northern Australia. We find that divergence across this barrier is evident in most species, but is heterogeneous in time and demographic history, often reflecting the taxonomic distinctness of lineages spanning it. We then discuss a variety of forces generating reticulate patterns in phylogeography, including introgression, contact zones, and the potential selection-driven outliers on next-generation molecular markers. We emphasize the continued need for demographic models incorporating reticulation at the level of genomes and populations, and conclude that gene trees, whether explicit or implicit, should continue to play a role in the future of phylogeography.
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50
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Leaché AD, Oaks JR. The Utility of Single Nucleotide Polymorphism (SNP) Data in Phylogenetics. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2017. [DOI: 10.1146/annurev-ecolsys-110316-022645] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adam D. Leaché
- Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Seattle, Washington 98195
| | - Jamie R. Oaks
- Department of Biological Sciences, Auburn University, Auburn, Alabama 36849
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