13 results match your criteria circumscriptions compared

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Phylogeny, historical biogeography and diversification rates in an economically important group of Neotropical palms: Tribe Euterpeae.

Mol Phylogenet Evol 2019 04 27;133:67-81. Epub 2018 Dec 27.

Department of Biology, Memorial University of Newfoundland, 232 Elizabeth Avenue, St. John's, NL A1B3X9, Canada. Electronic address:

Tribe Euterpeae is an economically and ecologically important group of Neotropical palms (Arecaceae). Some species are hyperdominant in the Neotropics, and many constitute a good source of revenue. To reconstruct the biogeographical history and diversification of the Euterpeae, we inferred a robust dated molecular phylogenetic hypothesis including 82% of the species sequenced for five DNA regions (trnD-trnT, CISP4, WRKY6, RPB2, and PHYB). Read More

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High-Frequency Jet Ventilation in Nonintubated Patients.

Turk Thorac J 2018 Jul 1;19(3):127-131. Epub 2018 Jul 1.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Objectives: High-frequency jet ventilation (HFJV) is a convenient method for providing ventilation during fiberoptic bronchoscopy. We describe an incipient approach of high-frequency jet ventilation via the working channel of a flexible bronchoscope for nonintubated patients who suffer from hypoxemia during bronchoscopy. The aim of this study was to test the efficacy of this incipient approach and determine the possible complications related to it. Read More

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Phylogenetic relationships and phylogeography of relevant lineages within the complex Campanulaceae family in Macaronesia.

Ecol Evol 2018 01 23;8(1):88-108. Epub 2017 Nov 23.

CIBIO Research Centre in Biodiversity and Genetic Resources InBIO Associate Laboratory Faculdade de Ciências e Tecnologia Universidade dos Açores Ponta Delgada Azores Portugal.

Macaronesia has long been recognized as a natural model for studying evolutionary processes in plant diversification. Several studies have attempted to focus on single lineages, and few have covered the diversification of a family across all the archipelagos. We used a comprehensive sample to clarify the phylogenetic relationships and the biogeographic history of the Macaronesian Campanulaceae. Read More

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January 2018

Molecular phylogenetics of cool-season grasses in the subtribes Agrostidinae, Anthoxanthinae, Aveninae, Brizinae, Calothecinae, Koeleriinae and Phalaridinae (Poaceae, Pooideae, Poeae, Poeae chloroplast group 1).

PhytoKeys 2017 9(87):1-139. Epub 2017 Oct 9.

Department of Vascular Plant Systematics and Phytogeography, W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków, Poland.

Circumscriptions of and relationships among many genera and suprageneric taxa of the diverse grass tribe Poeae remain controversial. In an attempt to clarify these, we conducted phylogenetic analyses of >2400 new DNA sequences from two nuclear ribosomal regions (ITS, including internal transcribed spacers 1 and 2 and the 5.8S gene, and the 3'-end of the external transcribed spacer (ETS)) and five plastid regions (, , , , ), and of more than 1000 new and previously published ITS sequences, focused particularly on Poeae chloroplast group 1 and including broad and increased species sampling compared to previous studies. Read More

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October 2017

Chloroplast and ITS phylogenies to understand the evolutionary history of southern South American Azorella, Laretia and Mulinum (Azorelloideae, Apiaceae).

Mol Phylogenet Evol 2017 03 4;108:1-21. Epub 2017 Feb 4.

Instituto de Investigaciones en Biodiversidad y Medioambiente, CONICET-Universidad Nacional del Comahue, Quintral 1250, 8400 Bariloche, Argentina. Electronic address:

Azorella, Laretia and Mulinum are taxonomically complex, and good candidates to study evolutionary radiations in the Andes and the importance of hybridizations. Previous phylogenetic studies of subfamily Azorelloideae agree that Azorella and Mulinum as currently conceived are not monophyletic, and hence a revision of their circumscription is necessary. However, these phylogenies were based only on chloroplast DNA sequence data. Read More

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Limitations of Species Delimitation Based on Phylogenetic Analyses: A Case Study in the Hypogymnia hypotrypa Group (Parmeliaceae, Ascomycota).

PLoS One 2016 9;11(11):e0163664. Epub 2016 Nov 9.

State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.

Delimiting species boundaries among closely related lineages often requires a range of independent data sets and analytical approaches. Similar to other organismal groups, robust species circumscriptions in fungi are increasingly investigated within an empirical framework. Here we attempt to delimit species boundaries in a closely related clade of lichen-forming fungi endemic to Asia, the Hypogymnia hypotrypa group (Parmeliaceae). Read More

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Opiliones are no longer the same--on suprafamilial groups in harvestmen (Arthropoda: Arachnida).

Authors:
Adriano B Kury

Zootaxa 2015 Mar 2;3925(3):301-40. Epub 2015 Mar 2.

Departamento de Invertebrados, Museu Nacional/UFRJ, Quinta da Boa Vista, São Cristóvão, 20.940-040, Rio de Janeiro - RJ - BRAZIL.; Email:

A review of the names used in the arachnid order Opiliones above superfamily level is presented. Many historical branching patterns of Opiliones (for five terminals), of Laniatores (for six terminals), and of Cyphophthalmi (for six terminals) are extrapolated, compared and graphically displayed. For the first time a historical review is made of the circumscriptions of those names and comparisons are drawn to current usage. Read More

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Community involvement in dengue vector control: cluster randomised trial.

MEDICC Rev 2010 ;12(1):41-7

Epidemiology and Disease Control Unit, Public Health Department, Institute of Tropical Medicine, Antwerp, Belgium.

Objective: To assess the effectiveness of an integrated community based environmental management strategy to control Aedes aegypti, the vector of dengue, compared with a routine strategy. Design Cluster randomised trial. Setting Guantanamo, Cuba. Read More

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Community involvement in dengue vector control: cluster randomised trial.

BMJ 2009 Jun 9;338:b1959. Epub 2009 Jun 9.

Epidemiology and Disease Control Unit, Public Health Department, Institute of Tropical Medicine, Nationalestraat 155, 2000 Antwerp, Belgium.

Objective: To assess the effectiveness of an integrated community based environmental management strategy to control Aedes aegypti, the vector of dengue, compared with a routine strategy.

Design: Cluster randomised trial.

Setting: Guantanamo, Cuba. Read More

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Value of host range, morphological, and genetic characteristics within the Entomophthora muscae species complex.

Mycol Res 2006 Aug 14;110(Pt 8):941-50. Epub 2006 Aug 14.

Department of Ecology, The Royal Veterinary and Agricultural University (KVL), Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark.

Entomopthora muscae sensu lato is a complex of morphologically similar fungal species pathogenic to evolutionarily advanced flies (Cyclorrhapha). To reach an operational species definition and recognition of species within this complex, the values of host range, morphological and genetic characteristics are reconsidered. Within the E. Read More

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Molecular systematics and a revised taxonomy of the onocleoid ferns (Dryopteridaceae: Onocleeae).

Authors:
G Gastony M Ungerer

Am J Bot 1997 Jun;84(6):840

Nucleotide sequences of the chloroplast-encoded rbcL gene were determined for all five species of the onocleoid ferns (Dryopteridaceae tribe Onocleeae), including both varieties of Onoclea sensibilis, and for outgroup member Blechnum glandulosum. Together with GenBank sequences of three additional onocleoid accessions and four additional taxa representing the outgroup Blechnaceae, these were analyzed cladistically under the optimality criteria of maximum parsimony and maximum likelihood. Maximum parsimony yielded a single most-parsimonious tree with the three accessions of Onoclea sensibilis var. Read More

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A multicompartment body composition technique based on computerized tomography.

Int J Obes Relat Metab Disord 1994 Apr;18(4):219-34

Department of Medicine, University of Göteborg, Sahlgrenska Hospital, Sweden.

The objective of this study was to develop a body composition method based on computerized tomography (CT) which would make it possible to divide the body into multiple compartments at the tissue and organ level. Eight healthy males (21-42 years old) with BMIs ranging from 18.6 to 25. Read More

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Molecular systematics of Brassica and allied genera (Subtribe Brassicinae, Brassiceae) - chloroplast DNA variation in the genus Diplotaxis.

Theor Appl Genet 1992 Apr;83(6-7):839-50

Biosystematics Research Center, Agriculture Canada, Research Branch, Central Experimental Farm, K1A OC6, Ottawa, Ontario, Canada.

Chloroplast DNA restriction site variation for 17 endonucleases was surveyed for the large single-copy region of the genome in 26 taxa of the genus Diplotaxis and compared with previously mapped site mutations in other members of the Subtribe Brassicinae (Tribe Brassiceae, Cruciferae). A total of 259 restriction site and length mutations were observed, 206 (80%) of which showed variation at the interspecific level. Phylogenetic analysis indicated a clear division of the genus Diplotaxis into the same two lineages for the Subtribe Brassicinae, described previously by Warwick and Black as Rapa/ Oleracea and Nigra. Read More

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