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Compositional heterogeneity and outgroup choice influence the internal phylogeny of the ants
Publication date: Available online 7 February 2019Source: Molecular Phylogenetics and EvolutionAuthor(s): Marek L. Borowiec, Christian Rabeling, Seán G. Brady, Brian L. Fisher, Ted R. Schultz, Philip S. WardAbstractKnowledge of the internal phylogeny and evolutionary history of ants (Formicidae), the world’s most species-rich clade of eusocial organisms, has dramatically improved since the advent of molecular phylogenetics. A number of relationships at the subfamily level, however, remain uncertain. Key unresolved issues include placement of the root of the ant tree of life and the relationships among the so-called pone...
Source: Molecular Phylogenetics and Evolution - February 7, 2019 Category: Molecular Biology Source Type: research

Comparison of different strategies for using fossil calibrations to generate the time prior in Bayesian molecular clock dating
Publication date: Available online 11 July 2017 Source:Molecular Phylogenetics and Evolution Author(s): Jose Barba-Montoya, Mario dos Reis, Ziheng Yang Fossil calibrations are the utmost source of information for resolving the distances between molecular sequences into estimates of absolute times and absolute rates in molecular clock dating analysis. The quality of calibrations is thus expected to have a major impact on divergence time estimates even if a huge amount of molecular data is available. In Bayesian molecular clock dating, fossil calibration information is incorporated in the analysis through the prior on diver...
Source: Molecular Phylogenetics and Evolution - July 11, 2017 Category: Molecular Biology Source Type: research

Molecular and morphological phylogenetics of chelonine parasitoid wasps (Hymenoptera: Braconidae), with a critical assessment of divergence time estimations
Publication date: August 2016 Source:Molecular Phylogenetics and Evolution, Volume 101 Author(s): Rebecca N. Kittel, Andrew D. Austin, Seraina Klopfstein Parasitoid wasps of the subfamily Cheloninae are both species rich and poorly known. Although the taxonomy of Cheloninae appears to be relatively stable, there is no clear understanding of relationships among higher-level taxa. We here applied molecular phylogenetic analyses using three markers (COI, EF1α, 28S) and 37 morphological characters to elucidate the evolution and systematics of these wasps. Analyses were based on 83 specimens representing 13 genera. All ge...
Source: Molecular Phylogenetics and Evolution - May 18, 2016 Category: Molecular Biology Source Type: research

Tip-dating and the Origin of Telluraves
Publication date: Available online 29 October 2018Source: Molecular Phylogenetics and EvolutionAuthor(s): Nicholas M.A. Crouch, Karolis Ramanauskas, Boris IgićAbstractDespite a relatively vast accumulation of molecular data, the timing of diversification of modern bird lineages remains elusive. Accurate dating of the origination of Telluraves—a clade of birds defined by their arboreality—is of particular interest, as it contains the most species-rich avian group, the passerines. Historically, neontological studies have estimated a Cretaceous origin for the group, but more recent studies have recovered Cenozoic dates, ...
Source: Molecular Phylogenetics and Evolution - October 30, 2018 Category: Molecular Biology Source Type: research

First multilocus and densely sampled timetree of trevallies, pompanos and allies (Carangoidei, Percomorpha) suggests a Cretaceous origin and Eocene radiation of a major clade of piscivores
Publication date: February 2015 Source:Molecular Phylogenetics and Evolution, Volume 83 Author(s): Francesco Santini , Giorgio Carnevale Carangoid fishes (trevallies, pompanos, jacks, dolphinfishes, cobias and remoras) include about 159 species of marine fishes found in tropical and temperate waters worldwide (Froese and Pauly, 2014). Many carangoids are powerful swimmers and active piscivores in and around coral-reef ecosystems. Some carangoid lineages, such as dolphinfishes, have evolved a pelagic lifestyle, while remoras spend their adult life attached to cetaceans, sharks, manta rays and large teleosts, feeding off s...
Source: Molecular Phylogenetics and Evolution - December 5, 2014 Category: Molecular Biology Source Type: research

PUM I Revisited: Tradeoffs in Preservation and Discovery
ABSTRACT An Egyptian mummy designated PUM I (Pennsylvania University Museum) was subjected to a complete autopsy in 1972. Forty‐one years later, the senior author (MZ) was invited back to the Penn Museum to identify several packages of material that had been preserved with the mummy joining the project conservator (MG) in the evaluation of these remains. A summary of the 1972 examination reviews the dating of the mummy, about 3,000 years ago. The mummy was poorly preserved and the only significant pathology was a rare skin disease, subcorneal pustular dermatosis, which was not identified by modern medicine until 1956. Th...
Source: The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology - May 22, 2015 Category: Molecular Biology Authors: Michael R. Zimmerman, Molly Gleeson Tags: Special Issue Article Source Type: research

Dating and biogeographical patterns in the sea slug genus Acanthodoris Gray, 1850 (Mollusca, Gastropoda, Nudibranchia)
This study also shows that northeast Pacific specimens of A. pilosa should be regarded as A. atrogriseata and that A. serpentinotus should be regarded as a synonym of A. pina. Graphical abstract
Source: Molecular Phylogenetics and Evolution - January 11, 2016 Category: Molecular Biology Source Type: research

Phylogenetic relationships, character evolution and biogeographic diversification of Pogostemon s.l. (Lamiaceae)
Publication date: May 2016 Source:Molecular Phylogenetics and Evolution, Volume 98 Author(s): Gang Yao, Bryan T. Drew, Ting-Shuang Yi, Hai-Fei Yan, Yong-Ming Yuan, Xue-Jun Ge Pogostemon (Lamiaceae; Lamioideae) sensu lato is a large genus consisting of about 80 species with a disjunct African/Asian distribution. The infrageneric taxonomy of the genus has historically been troublesome due to morphological variability and putative convergent evolution within the genus. Notably, some species of Pogostemon are obligately aquatic, perhaps the only Lamiaceae taxa which exhibit this trait. Phylogenetic analyses using the n...
Source: Molecular Phylogenetics and Evolution - March 3, 2016 Category: Molecular Biology Source Type: research

Was Gondwanan breakup the cause of the intercontinental distribution of Osteoglossiformes? A time-calibrated phylogenetic test combining molecular, morphological, and paleontological evidence
Publication date: June 2016 Source:Molecular Phylogenetics and Evolution, Volume 99 Author(s): Sébastien Lavoué The intercontinental distribution of living freshwater osteoglossiform fishes (Osteoglossomorpha, Teleostei) was hypothesized to predominantly represent the vicariant result of the fragmentation of Gondwana based on physiological and phylogenetic evidence. The fossil record, however, challenges this hypothesis by making transoceanic dispersal plausible because it provides post-fragmentation minimum ages of intercontinental clades and it includes several marine forms. The aim of this study was to test whether...
Source: Molecular Phylogenetics and Evolution - March 20, 2016 Category: Molecular Biology Source Type: research

Evolution in the Amphi-Atlantic tropical genus Guibourtia (Fabaceae, Detarioideae), combining NGS phylogeny and morphology
Publication date: March 2018 Source:Molecular Phylogenetics and Evolution, Volume 120 Author(s): Félicien Tosso, Olivier J. Hardy, Jean-Louis Doucet, Kasso Daïnou, Esra Kaymak, Jérémy Migliore Tropical rain forests support a remarkable diversity of tree species, questioning how and when this diversity arose. The genus Guibourtia (Fabaceae, Detarioideae), characterized by two South American and 13 African tree species growing in various tropical biomes, is an interesting model to address the role of biogeographic processes and adaptation to contrasted environments on species diversification. Combining whole plastid gen...
Source: Molecular Phylogenetics and Evolution - December 14, 2017 Category: Molecular Biology Source Type: research

Phylogeny, molecular dating and zoogeographic history of the titi monkeys (Callicebus, Pitheciidae) of eastern Brazil
Publication date: Available online 2 March 2018 Source:Molecular Phylogenetics and Evolution Author(s): Jeferson Carneiro, Iracilda Sampaio, José de Sousa e Silva-Júnior, Izeni Farias, Tomas Hrbek, Alcides Pissinatti, Ronylson Silva, Antônio Martins-Junior, Jean Boubli, Stephen Francis Ferrari, Horacio Schneider The titi monkeys belong to a genus of New World primates endemic to South America, which were recently reclassified in three genera (Cheracebus, Plecturocebus and Callicebus). The genus Callicebus, which currently includes five species, is endemic to eastern Brazil, occurring in the Caatinga, Savanna, and Atlan...
Source: Molecular Phylogenetics and Evolution - March 3, 2018 Category: Molecular Biology Source Type: research

Forces maintaining the DNA double helix and its complexes with transcription factors
Publication date: Available online 31 January 2018 Source:Progress in Biophysics and Molecular Biology Author(s): Peter L. Privalov, Colyn Crane-Robinson Precise calorimetric studies of DNA duplexes of various length and composition have revised several long-held beliefs about the forces holding together the double helix and its complexes with the DNA binding domains (DBDs) of transcription factors. Heating DNA results in an initial non-cooperative increase of torsional oscillations in the duplex, leading to cooperative dissociation of its strands accompanied by extensive heat absorption and a significant heat capacity in...
Source: Progress in Biophysics and Molecular Biology - February 7, 2018 Category: Molecular Biology Source Type: research

A phylogeny of the only ground-dwelling radiation of Cyrtodactylus (Squamata, Gekkonidae): diversification of Geckoella across peninsular India and Sri Lanka
Publication date: January 2015 Source:Molecular Phylogenetics and Evolution, Volume 82, Part A Author(s): Ishan Agarwal , K. Praveen Karanth The subgenus Geckoella, the only ground-dwelling radiation within Cyrtodactylus, closely overlaps in distribution with brookii group Hemidactylus in peninsular India and Sri Lanka. Both groups have Oligocene origins, the latter with over thrice as many described species. The striking difference in species richness led us to believe that Geckoella diversity is underestimated, and we sampled for Geckoella across peninsular India. A multi-locus phylogeny reveals Geckoella diversity is ...
Source: Molecular Phylogenetics and Evolution - November 9, 2014 Category: Molecular Biology Source Type: research