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Phylogenetic mixture models are statistical models of character evolution allowing for heterogeneity. Each of the classes in some unknown partition of the characters may evolve by different processes, or even along different trees. The... more
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      Algebraic GeometryData AnalysisMolecular EvolutionBiological Sciences
Previous phylogenetic attempts at resolving barnacle evolutionary relationships are few and have relied on limited taxon sampling. Here we combine DNA sequences from three nuclear genes (18S, 28S and H3) and 44 morphological characters... more
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    •   19  
      Evolutionary BiologyGeneticsTaxonomyMorphology
The Resedaceae, containing 6 genera and ca. 85 species, are widely distributed in the Old World, with a major center of species diversity in the Mediterranean basin. Phylogenetic analyses of ITS and plastid trnL-trnF sequences of 66... more
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    •   20  
      Evolutionary BiologyGeneticsGeographyPhylogenetics
Long-held ideas regarding the evolutionary relationships among animals have recently been upended by sometimes controversial hypotheses based largely on insights from molecular data 1,2 . These new hypotheses include a clade of moulting... more
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    •   59  
      PharmacologyBiochemistryBioinformaticsEvolutionary Biology
To better understand the evolutionary history of the genus Centaurium and its relationship to other genera of the subtribe Chironiinae (Gentianaceae: Chironieae), molecular analyses were performed using 80 nuclear ribosomal ITS and 76... more
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    •   22  
      Evolutionary BiologyGeneticsZoologyGeography
The plastid coding rbcL and non-coding trnLF regions of 53 of 55 southern African Zygophyllum species were sequenced and used to evaluate the phylogenetic relationships within the southern African representatives of the genus. Published... more
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      Evolutionary BiologyGeneticsZoologyGeography
Phylogenetic relationships of the monocot family Hypoxidaceae (Asparagales), which occurs mainly in the Southern Hemisphere, were reconstructed using four plastid DNA regions (rbcL, trnL intron, trnL-F intergenic spacer, and trnS-G... more
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    •   20  
      Evolutionary BiologyGeneticsZoologyPhylogeography
Maximum likelihood and Bayesian analyses of non-coding plastid DNA sequence data based on a broad sampling of all major Asian Begonia sections (ndhA intron, ndhF-rpl32 spacer, rpl32-trnL spacer, 3977 aligned characters, 84 species) were... more
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    •   12  
      Evolutionary BiologyGeneticsZoologyPhylogeny
A molecular phylogeny of combined mtSSU, nuLSU, and RPB2 data revealed previously unrecognized levels of parallel evolution and phenotypic divergence in the lichen family Graphidaceae. Five clades were supported within the family: the... more
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      Evolutionary BiologyGeneticsZoologyMolecular Evolution
The Alpheidae-possibly the most diverse family of recent decapod crustaceans-offers attractive opportunities to study the evolution of many intriguing phenomena, including key morphological innovations like spectacular snapping claws,... more
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    •   14  
      Evolutionary BiologyCrustaceaEvolutionBiodiversity
The most conspicuous feature in previous phaeophycean phylogenies is a large polytomy known as the brown algal crown radiation (BACR). The BACR encompasses 10 out of the 17 currently recognized brown algal orders. A recent study has been... more
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    •   17  
      Evolutionary BiologyGeneticsZoologyMolecular Evolution
The phylogeny of a number of diverse, tropical Australian lineages has been studied recently to lay the groundwork for biogeographic analyses. As part of this effort, we present here a cladistic analysis of the Australasian Coelometopini... more
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    •   2  
      Evolutionary BiologyCharacter Evolution
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    •   7  
      Evolutionary BiologyGeneticsZoologyMolecular
Pollen analysis and parsimony-based phylogenetic analyses of the genera Cistus and Halimium, two Mediterranean shrubs typical of Mediterranean vegetation, were undertaken, on the basis of cpDNA sequence data from the trnL-trnF, and... more
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    •   9  
      Evolutionary BiologyMolecular SystematicsPlant BiologyPollen Morphology
Portulaca is the only genus in Portulacaceae and includes ca. 100 species with worldwide distribution. Inflorescence types in Portulaca have been used as an important character in infrageneric classifications and it has been suggested... more
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    •   3  
      Phylogenetic SystematicsCharacter EvolutionInflorescences
Recent phylogenetic studies have provided compelling evidence that confirms the once disputed hypothesis of monophyly for heterosporous leptosporangiate ferns (Marsileaceae and Salviniaceae). Hypotheses for relationships among the three... more
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    •   7  
      Evolutionary BiologyPlant BiologyPlant sciencesMorphological Characters
Rare and enigmatic genera (Dunnia, Schizocolea, Colletoecema), sisters to species-rich clades: Phylogeny and aspects of conservation biology in the coffee family a b s t r a c t Despite extensive efforts, parts of the phylogeny of the... more
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    •   16  
      Evolutionary BiologyGeneticsZoologyConservation Biology
The Diervilla and Lonicera clades are members of the family Caprifoliaceae (Dipsacales sensu Donoghue et al., 2001, Harvard Papers in Botany 6: 459-479). So far, the intergeneric relationships of the Lonicera clade and the systematic... more
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    •   15  
      Plant BiologyEcologyScanning Electron MicroscopyBayesian Inference
The Ephedra lineage can be traced at least to the Early Cretaceous. Its characteristically polyplicate pollen is well-represented in the fossil record and is frequently used as an indicator of paleoclimate. However, despite previous... more
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    •   5  
      Scanning Electron MicroscopyPollen MorphologyEphedraCharacter Evolution
A phylogeny of blue butterflies of the genus Maculinea and related genera (Lycaenidae) is proposed, based on 91 morphological and ecological characters. The resulting tree shows that: (1) Phengaris is a derived group nested within... more
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    •   5  
      Evolutionary BiologyCladisticsSupport GroupCharacter Evolution
Background: False truffles are ecologically important as mycorrhizal partners of trees and evolutionarily highly interesting as the result of a shift from epigeous mushroom-like to underground fruiting bodies. Since its first description... more
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    •   37  
      EngineeringEvolutionary BiologyGeneticsZoology
The about 31 species of Fosterella L.B. Sm. (Bromeliaceae) are terrestrial herbs with a centre of diversity in the central South American Andes. To resolve infra-and intergeneric relationships among Fosterella and their putative allies,... more
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    •   14  
      Evolutionary BiologyGeneticsZoologyMolecular Evolution
Pycnogonids or sea spiders are a group of marine arthropods whose relations to the chelicerates have been an issue of controversy. Higher-level phylogenetic relationships among the lineages of sea spiders are investigated using 36... more
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      Evolutionary BiologyParallel EvolutionMorphological CharactersCharacter Evolution
This is the first phylogenetic analysis of Clitellata using 18S rDNA in combination with morphological data of a selection of species representing Hirudinida, Acanthobdellida, Branchiobdellida, and eight oligochaetous families. The... more
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    •   3  
      ZoologyZoological MedicineCharacter Evolution
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    •   4  
      Plant BiologyPhylogenySystematic botanyCharacter Evolution
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    •   14  
      Evolutionary BiologyGeneticsZoologyMolecular Systematics
The field of ecomorphology has a long history with early roots in Europe. In this half of the century the application of ecomorphology to the biology of fishes has developed in the former Soviet Union, Poland and Czechoslovakia, The... more
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      ZoologyEcologyResource useFisheries Sciences
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    •   6  
      ZoologyOsteologySystematicsFossil record
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    •   6  
      Evolutionary BiologyPlant BiologyMorphologyClassification
Cladistic analyses of plastid DNA sequences rbcL and trnL-F are presented separately and combined for 48 genera of Amaryllidaceae and 29 genera of related asparagalean families. The combined analysis is the most highly resolved of the... more
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    •   7  
      Evolutionary BiologyMolecular SystematicsPlant BiologyEcology
This article provides the first molecular phylogenetic study of the enigmatic invertebrate phylum Entoprocta and was designed to resolve the internal phylogenetic relationships of the taxon. The study is based on partial and combined... more
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    •   20  
      Evolutionary BiologyGeneticsZoologyAlgorithms
Phosphoribulokinase PRK atpB-rbcL spacer trnL-trnF spacer trnL intron matK Character evolution Sepal symmetry Tank habit a b s t r a c t Phylogenetic relationships within subfamily Bromelioideae (Bromeliaceae, Poales) were inferred using... more
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    •   16  
      Evolutionary BiologyGeneticsZoologyMolecular Evolution
The orchid genus Maxillaria is one of the largest and most common of neotropical orchid genera, but its current generic boundaries and relationships have long been regarded as artificial. Phylogenetic relationships within subtribe... more
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    •   8  
      BotanyEvolutionary BiologyPlant BiologyEcology
Previous phylogenetic attempts at resolving barnacle evolutionary relationships are few and have relied on limited taxon sampling. Here we combine DNA sequences from three nuclear genes (18S, 28S and H3) and 44 morphological characters... more
    • by  and +2
    •   21  
      Evolutionary BiologyGeneticsZoologyTaxonomy
Glassfrogs (family Centrolenidae) represent an exceptionally diverse group among Neotropical anurans, but their evolutionary relationships never have been assessed from a molecular perspective. Mitochondrial and nuclear markers were used... more
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    •   21  
      Evolutionary BiologyGeneticsZoologySpeciation
Many genera previously placed in the traditionally circumscribed Capparaceae are either unrelated or, more commonly, isolated lineages in the order Brassicales. This study examines the relationships of three of these orphan genera,... more
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    •   9  
      Morphological evolutionPlant BiologyMaximum LikelihoodNew World
It is widely recognized that macroecological patterns are not independent of the evolution of the lineages involved in generating these patterns. While many researchers have begun to evaluate the effect of ancestordescendant relationships... more
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    •   6  
      Evolutionary BiologyMacroevolutionEcologyEvolution
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and... more
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    •   4  
      Evolutionary BiologyPlant BiologyPlant sciencesCharacter Evolution
The orchid genus Maxillaria is one of the largest and most common of neotropical orchid genera, but its current generic boundaries and relationships have long been regarded as artificial. Phylogenetic relationships within subtribe... more
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    •   8  
      BotanyEvolutionary BiologyPlant BiologyEcology
Why does a trait evolve repeatedly within a clade? When examining the evolution of a trait, evolutionary biologists typically focus on the selective advantages it may confer and the genetic and developmental mechanisms that allow it to... more
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    •   15  
      Evolutionary BiologyGeneticsMacroevolutionCommunity Ecology
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    •   7  
      Plant BiologyWood AnatomyFossil WoodPerforation
We examined the effect of soft polytomies on the performance (Type I error rate and bias) of Am. Nat. 125:1-15) method of phylogenetically independent contrasts for estimating a bivariate correlation. We speci cally tested the adequacy of... more
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    •   13  
      Evolutionary BiologyGeneticsSystematic BiologyPhylogeny
It has proven remarkably diYcult to obtain a well-resolved and strongly supported phylogeny for horned lizards (Phrynosoma) because of incongruence between morphological and mitochondrial DNA sequence data. We infer the phylogenetic... more
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      Evolutionary BiologyGeneticsZoologyBayesian Analysis
Parmelioid lichens comprise about 1500 species and have a worldwide distribution. Numerous species are widely distributed and well known, including important bioindicators for atmospheric pollution. The phylogeny and classiWcation of... more
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    •   13  
      Evolutionary BiologyGeneticsZoologyMolecular Evolution
Historical relationships were inferred for the oriental lizards of the genus Takydromus Daudin 1802 (Lacertidae) on the basis of DNA sequences. Of the 17 species currently recognized for the genus, 13 species represented by 42 specimens... more
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    •   14  
      PalaeogeographyMolecular EvolutionTaxonomyBiogeography
Keywords: Ebenaceae phylogeny palynology Bayesian inference principle component analysis This study examines the diversity and character transformations in pollen and orbicule morphology of Ebenaceae, with a focus on subfamily Ebenoideae... more
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    •   10  
      GeologyPhylogeneticsPalynologyStratification
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    •   6  
      Evolutionary BiologyPlant BiologyMorphologyClassification
Phylogenetic reconstructions in the Mediterranean genus Erodium are for the first time performed using two matrices: one with 96 trnL-trnF sequences from Erodium (90 accessions plus four outgroups) and the other with 72 trnL-trnF... more
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    •   15  
      PhylogeneticsPlant BiologyBayesian InferenceSystematic botany
The Resedaceae, containing 6 genera and ca. 85 species, are widely distributed in the Old World, with a major center of species diversity in the Mediterranean basin. Phylogenetic analyses of ITS and plastid trnL-trnF sequences of 66... more
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    •   20  
      Evolutionary BiologyGeneticsGeographyPhylogenetics
Equisetum is a small and morphologically distinct genus with a rich fossil record. Two subgenera have been recognized based principally on stomatal position and stem branching: subg. Equisetum (eight species; superficial stomates; stems... more
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    •   13  
      Evolutionary BiologyPlant BiologyFossil recordMolecular clock