Phylogeographic estimation and simulation of global diffusive dispersal.

abstract：:Although most often used to represent phylogenetic uncertainty, network methods are also potentially useful for describing the phylogenetic complexity expected to characterize recent species radiations. One network method with particular advantages in this context is split decomposition. However, in its standard imple...

journal_title：Systematic biology

authors： Winkworth R,Bryant D,Lockhart P,Havell D,Moulton V

更新日期：2005-02-01 00:00:00

abstract：:The dominance of angiosperms has played a direct role in the diversification of insects, especially Coleoptera. The shift to angiosperm feeding from other diets is likely to have increased the rate of speciation in Phytophaga. However, Phytophaga is only one of many hyperdiverse lineages of beetles and studies of host...

journal_title：Systematic biology

authors： Leschen RA,Buckley TR

更新日期：2007-02-01 00:00:00

abstract：:We conducted a geometric morphometric analysis of interspecific body shape variation among representatives of 31 species of darters (Pisces: Percidae) to determine whether there is evidence of a phylogenetic effect in body shape variation. Cartesian transformation grids representing relative shape differences of indiv...

journal_title：Systematic biology

authors： Guill JM,Heins DC,Hood CS

更新日期：2003-08-01 00:00:00

abstract：:Tree reconstruction methods are often judged by their accuracy, measured by how close they get to the true tree. Yet, most reconstruction methods like maximum likelihood (ML) do not explicitly maximize this accuracy. To address this problem, we propose a Bayesian solution. Given tree samples, we propose finding the tr...

journal_title：Systematic biology

authors： Huggins PM,Li W,Haws D,Friedrich T,Liu J,Yoshida R

更新日期：2011-07-01 00:00:00

abstract：:Acoela are marine microscopic worms currently thought to be the sister taxon of all other bilaterians. Acoels have long been used as models in evolutionary scenarios, and generalized conclusions about acoel and bilaterian ancestral features are frequently drawn from studies of single acoel species. There is no extensi...

journal_title：Systematic biology

authors： Jondelius U,Wallberg A,Hooge M,Raikova OI

更新日期：2011-12-01 00:00:00

abstract：:Significant phylogenetic codivergence between plant or animal hosts (H) and their symbionts or parasites (P) indicates the importance of their interactions on evolutionary time scales. However, valid and realistic methods to test for codivergence are not fully developed. One of the systems where possible codivergence ...

journal_title：Systematic biology

authors： Schardl CL,Craven KD,Speakman S,Stromberg A,Lindstrom A,Yoshida R

更新日期：2008-06-01 00:00:00

abstract：:Although concerns are being raised about a potential shortage of taxonomists and systematists, recent analyses suggest instead that the number of researchers involved in taxonomic descriptions is higher than ever and that the average number of new species described annually per taxonomist has declined in recent decade...

journal_title：Systematic biology

authors： Poulin R,Presswell B

更新日期：2016-11-01 00:00:00

abstract：:Genomic data have had a profound impact on nearly every biological discipline. In systematics and phylogenetics, the thousands of loci that are now being sequenced can be analyzed under the multispecies coalescent model (MSC) to explicitly account for gene tree discordance due to incomplete lineage sorting (ILS). Howe...

journal_title：Systematic biology

authors： Blair C,Ané C

更新日期：2020-05-01 00:00:00

abstract：:As we collect range-wide genetic data for morphologically-defined species, we increasingly unearth evidence for cryptic diversity. Delimiting this cryptic diversity is challenging, both because the divergences span a continuum and because the lack of overt morphological differentiation suggests divergence has proceede...

journal_title：Systematic biology

authors： Singhal S,Hoskin CJ,Couper P,Potter S,Moritz C

更新日期：2018-11-01 00:00:00

abstract：:There has long been ambiguity in the use of the term tree in phylogenetic systematics, which is a continuous source of misinterpretation of evolutionary relationships. The basic problem is that while many trees with phylogenetic or evolutionary relevance, such as cladograms, are consistent with graph theory, tree-like...

journal_title：Systematic biology

authors： Podani J

更新日期：2017-09-01 00:00:00

abstract：:A controversial topic that underlies much of phylogenetic experimental design is the relative utility of increased taxonomic versus character sampling. Conclusions about the relative utility of adding characters or taxa to a current phylogenetic study have subtly hinged upon the appropriateness of the rate of evolutio...

journal_title：Systematic biology

authors： Townsend JP,Lopez-Giraldez F

更新日期：2010-07-01 00:00:00

abstract：:The Cracidae is one of the most endangered and distinctive bird families in the Neotropics, yet the higher relationships among taxa remain uncertain. The molecular phylogeny of its 11 genera was inferred using 10,678 analyzable sites (5,412 from seven different mitochondrial segments and 5,266 sites from four nuclear ...

journal_title：Systematic biology

authors： Pereira SL,Baker AJ,Wajntal A

更新日期：2002-12-01 00:00:00

abstract：:Gene trees record the combination of gene-level events, such as duplication, transfer and loss (DTL), and species-level events, such as speciation and extinction. Gene tree-species tree reconciliation methods model these processes by drawing gene trees into the species tree using a series of gene and species-level eve...

journal_title：Systematic biology

authors： Szöllõsi GJ,Rosikiewicz W,Boussau B,Tannier E,Daubin V

更新日期：2013-11-01 00:00:00

abstract：:Substitution rates are known to be variable among genes, chromosomes, species, and lineages due to multifarious biological processes. Here, we consider another source of substitution rate variation due to a technical bias associated with gene tree discordance. Discordance has been found to be rampant in genome-wide da...

journal_title：Systematic biology

authors： Mendes FK,Hahn MW

更新日期：2016-07-01 00:00:00

abstract：:Penelope-like elements (PLEs) are a relatively little studied class of eukaryotic retroelements, distinguished by the presence of the GIY-YIG endonuclease domain, the ability of some representatives to retain introns, and the similarity of PLE-encoded reverse transcriptases to telomerases. Although these retrotranspos...

journal_title：Systematic biology

authors： Arkhipova IR

更新日期：2006-12-01 00:00:00

abstract：:Historically, comparisons of host and parasite phylogenies have concentrated on cospeciation. However, many of these comparisons have demonstrated that the phylogenies of hosts and parasites are seldom completely congruent, suggesting that phenomena other than cospeciation play an important role in the evolution of ho...

journal_title：Systematic biology

authors： Weckstein JD

更新日期：2004-02-01 00:00:00

abstract：:Although the proposition that higher taxa should correspond to clades is widely accepted, current nomenclature does not distinguish clearly between different clades in nested series. In particular, the same name is often applied to a total clade, its crown clade, and clades originating with various nodes, branches, an...

journal_title：Systematic biology

authors： de Queiroz K

更新日期：2007-12-01 00:00:00

abstract：:The remarkable fossil record of whales and dolphins (Cetacea) has made them an exemplar of macroevolution. Although their overall adaptive transition from terrestrial to fully aquatic organisms is well known, this is not true for the radiation of modern whales. Here, we explore the diversification of extant cetaceans ...

journal_title：Systematic biology

authors： Steeman ME,Hebsgaard MB,Fordyce RE,Ho SY,Rabosky DL,Nielsen R,Rahbek C,Glenner H,Sørensen MV,Willerslev E

更新日期：2009-12-01 00:00:00

abstract：:We modified the phylogenetic program MrBayes 3.1.2 to incorporate the compound Dirichlet priors for branch lengths proposed recently by Rannala, Zhu, and Yang (2012. Tail paradox, partial identifiability and influential priors in Bayesian branch length inference. Mol. Biol. Evol. 29:325-335.) as a solution to the prob...

journal_title：Systematic biology

authors： Zhang C,Rannala B,Yang Z

更新日期：2012-10-01 00:00:00

abstract：:Rapidly evolving pathogens, such as viruses and bacteria, accumulate genetic change at a similar timescale over which their epidemiological processes occur, such that, it is possible to make inferences about their infectious spread using phylogenetic time-trees. For this purpose it is necessary to choose a phylodynami...

journal_title：Systematic biology

authors： Duchene S,Bouckaert R,Duchene DA,Stadler T,Drummond AJ

更新日期：2019-03-01 00:00:00

abstract：:Phylogenetic relationships inferred from multilocus organellar and nuclear DNA data are often difficult to resolve because of evolutionary conflicts among gene trees. However, conflicting or "outlier" associations (i.e., linked pairs of "operational terminal units" in two phylogenies) among these data sets often provi...

journal_title：Systematic biology

authors： Pérez-Escobar OA,Balbuena JA,Gottschling M

更新日期：2016-01-01 00:00:00

abstract：:The evolutionary history of gains and losses of vegetative reproductive propagules (soredia) in Porpidia s.l., a group of lichen-forming ascomycetes, was clarified using Bayesian Markov chain Monte Carlo (MCMC) approaches to monophyly tests and a combined MCMC and maximum likelihood approach to ancestral character sta...

journal_title：Systematic biology

authors： Buschbom J,Barker D

更新日期：2006-06-01 00:00:00

abstract：:Evolutionary biologists have adopted simple likelihood models for purposes of estimating ancestral states and evaluating character independence on specified phylogenies; however, for purposes of estimating phylogenies by using discrete morphological data, maximum parsimony remains the only option. This paper explores ...

journal_title：Systematic biology

authors： Lewis PO

更新日期：2001-11-01 00:00:00

abstract：:Markov chain Monte Carlo (MCMC) is a methodology that is gaining widespread use in the phylogenetics community and is central to phylogenetic software packages such as MrBayes. An important issue for users of MCMC methods is how to select appropriate values for adjustable parameters such as the length of the Markov ch...

journal_title：Systematic biology

authors： Beiko RG,Keith JM,Harlow TJ,Ragan MA

更新日期：2006-08-01 00:00:00

abstract：:Polyploidization is an important speciation mechanism in the barley genus Hordeum. To analyze evolutionary changes after allopolyploidization, knowledge of parental relationships is essential. One chloroplast and 12 nuclear single-copy loci were amplified by polymerase chain reaction (PCR) in all Hordeum plus six out-...

journal_title：Systematic biology

authors： Brassac J,Blattner FR

更新日期：2015-09-01 00:00:00

abstract：:Siparunaceae comprise Glossocalyx with one species in West Africa and Siparuna with 65 species in the neotropics; all have unisexual flowers, and 15 species are monoecious, 50 dioecious. Parsimony and maximum likelihood analyses of combined nuclear ribosomal ITS and chloroplast trnL-trnF intergenic spacer sequences yi...

journal_title：Systematic biology

authors： Renner SS,Won H

更新日期：2001-09-01 00:00:00

abstract：:As an archive of sequence data for over 165,000 species, GenBank is an indispensable resource for phylogenetic inference. Here we describe an informatics processing pipeline and online database, the PhyLoTA Browser (http://loco.biosci.arizona.edu/pb), which offers a view of GenBank tailored for molecular phylogenetics...

journal_title：Systematic biology

authors： Sanderson MJ,Boss D,Chen D,Cranston KA,Wehe A

更新日期：2008-06-01 00:00:00

abstract：:Following (1) the large-scale molecular phylogeny of seed plants based on plastid rbcL gene sequences (published in 1993 by Chase et al., Ann. Missouri Bot. Gard. 80:528-580) and (2) the 18S nuclear phylogeny of flowering plants (published in 1997 by Soltis et al., Ann. Missouri Bot. Gard. 84:1-49), we present a phylo...

journal_title：Systematic biology

authors： Savolainen V,Chase MW,Hoot SB,Morton CM,Soltis DE,Bayer C,Fay MF,de Bruijn AY,Sullivan S,Qiu YL

更新日期：2000-06-01 00:00:00

abstract：:We investigate the impact of past climates on plant diversification by tracking the "footprint" of climate change on a phylogenetic tree. Diversity within the cosmopolitan carnivorous plant genus Drosera (Droseraceae) is focused within Mediterranean climate regions. We explore whether this diversity is temporally link...

journal_title：Systematic biology

authors： Yesson C,Culham A

更新日期：2006-10-01 00:00:00

abstract：:Phylogenomic analyses have helped resolve many recalcitrant relationships in the angiosperm tree of life, yet phylogenetic resolution of the backbone of the Leguminosae, one of the largest and most economically and ecologically important families, remains poor due to generally limited molecular data and incomplete tax...

journal_title：Systematic biology

authors： Zhang R,Wang YH,Jin JJ,Stull GW,Bruneau A,Cardoso D,De Queiroz LP,Moore MJ,Zhang SD,Chen SY,Wang J,Li DZ,Yi TS

更新日期：2020-07-01 00:00:00