Molecular Systematics
Mostrando 13-24 de 59 artigos, teses e dissertações.
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13. Filogenia molecular das abelhas Augochlorini (Hymenoptera, Apidae) / Molecular phylogeny of Augochlorini bees (Hymenoptera, Apidae)
Augochlorini (Halictinae) e um elemento comum na região Neotropical, e a historia natural das suas espécies e marcada pela plasticidade quando comparada a outras abelhas. A tribo e grupo-irmão de Halictini, e seus fosseis datam pelos menos do âmbar Dominicano (cerca de 20 milhões de anos). As relações entre os gêneros de Augochlorini foram reconstru�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2011
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14. The need to carry out re-inventory of plant pathogenic fungi
Plant pathogenic fungi have long been documented through concerted efforts of mycologists and plant pathologists; these records have served as the basis for regional and countrywide checklists which have since been put into databases listing hosts and associated fungi. They are used by governments and scientists to formulate trade quarantine policies and det
Tropical Plant Pathology. Publicado em: 2011-08
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15. Estudos de sistemática molecular e de biogeografia histórica do bagre de água doce Pseudoplatystoma Bleeker, 1862 (Pimelodidae) na América do Sul
The catfishes of the Pseudoplatystoma genus are carnivore pimelodids, migratory and important for fisheries in all major river basins from South America. Only three species were recognized for the genus (P. corruscans, P. fasciatum and P. tigrinum), but a new revision raised to eight the number of species (P. fasciatum, P. punctifer, P. orinocoense, P. magda
Publicado em: 2010
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16. Sistemática de Paepalanthoideae (Euriocaulaceae): Filogenia, morfologia e taxonomia de Diphyomene (Ruhland) Trovó / Systematics of Paepalanthoideae (Eriocaulaceae): Phylogeny, morphology, and taxonomy of Diphyomene (Ruhland) Trovó
This thesis consists of a phylogenetic study involving Paepalanthoideae, and a morphological, nomenclatural, and taxonomic survey of Paepalanthus sect. Diphyomene. Chapter I is a phylogenetic study of Paepalanthoideae based on morphological and molecular data (nrITS and trnL-trnL). The monophyly of Rondonanthus, as a sister group of the remaining Paepalantho
Publicado em: 2010
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17. Filogenia molecular, evolução e sistemática de Rhipsalis (Cactaceae) / Molecular phylogeny, evolution and systematics of Rhipsalis (Cactaceae)
Rhipsalis inclui 37 espécies e representa o maior gênero de Cactaceas epífitas. Grande parte das espécies de Rhipsalis são endêmicas do Brasil (81%), e apenas três espécies são amplamente distribuídas pela América Tropical: Rhipsalis micrantha (Kunth) DC. (Peru, Colômbia, Venezuela e Costa Rica), Rhipsalis floccosa Salm-Dyck ex Pfeiff. (Paraguai
Publicado em: 2010
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18. Relações filogenéticas da superfamília Doradoidea (Ostariophysi, Siluriformes) / Phylogenetic relationships of the superfamily Doradoidea (Ostariophysi, Siluriformes)
The superfamily Doradoidea (Siluriformes) is composed of two Neotropicalendemic families: Doradidae and Auchenipteridae. The sister-group relationship between these families has been corroborated by previous studies of both morphological and molecular data. Previous studies have also provided support for evolutionary relationships between doradoid genera and
Publicado em: 2010
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19. Sistemática molecular de Trichosporon spp. baseada em genes ribossomais e sua correlação com fatores de virulência e epidemiologia / Molecular systematics of Trichosporon spp. based on ribosomal genes and its correlation with virulence factors and epidemiology
Yeasts of the genus Trichosporon appear as emerging pathogens with high rates of morbidity and mortality in immunocompromised patients and is becoming increasingly widespread. The significant increase of invasive tricosporonose and the controversial identification of this kind imply an epidemiological deficit which in turn complicates the understanding of th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2009
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20. Systematics and Biogeography of the Didymopanax group of Schefflera (Araliaceae)
Schefflera is the largest genus in the angiosperm family Araliaceae, with about 900 species, of which c. 300 belong to five subgeneric groups in the Neotropical region. Previous phylogenetic studies of Schefflera have been limited to a small number of species from this region, and very little is know about phylogenetic relationships in the Brazilian-centered
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200910
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21. The karyotype of three Brazilian Terrarana frogs (Amphibia, Anura) with evidence of a new Barycholos species
A recent substantial rearrangement of the 882 described eleutherodactyline frog species has considerably improved the understanding of their systematics. Nevertheless, many taxonomic aspects of the South American eleutherodactyline species remain unknown and require further investigation using morphological, cytogenetic and molecular approaches. In this work
Genetics and Molecular Biology. Publicado em: 19/06/2009
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22. Systematics and philosophy: phylogeny of Ocotea complex and revision of Ocotea indecora group (Lauraceae) / Sistemática e filosofia: filogenia do complexo Ocotea e revisão do grupo Ocotea indecora (Lauraceae)
Approaches as homology, construction of taxa, and phylogeny reconstruction can be contextualized and investigated through a historical and current connection between systematics and philosophy. The present thesis defends this scientific-philosophical connection, having as study case both the Ocotea complex, which embraces 13 genera and 750 species predominan
Publicado em: 2009
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23. Molecular Systematics and Biogeography of Monogenoidea (Platyhelminthes: Cercomeromorpha), Gill Parasites of Potamotrygonidae (Chondrichthyes: Rajiformes: Myliobatoidei) / Sistemática molecular e biogeografia dos Monogenoidea (Platyhelminthes: Cercomeromorpha), parasitas das brânquias de Potamotrygonidae (Condrichthyes: Rajiformes: Myliobatoidei)
South America is the only biogeographical region in the world where is possible to find an exclusive stenohalin group of elasmobranchs: the Potamotrygonidae stingrays. Between 19 and 21 species of potamotrygonid stingrays are taxonomically organized in three genera, distributed in the Atrato, Magdalena, Maracaibo, Orinoco, Essequibo, Amazonas e la Plata rive
Publicado em: 2009
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24. Inferência filogenética em gaviões buteoninos (Aves: Accipitridae), com base em caracteres osteológicos cranianos / Phylogenetic inference in buteonine hawks (Aves: Accipitridade), based on cranial osteological characteres
The buteonine hawks are members of the family Accipitridae with a worldwide distribution but mainly restricted to the Neotropics. Traditionally, the buteonine group has included the genera Buteo, Busarellus, Buteogallus, Geranoaetus, Geranospiza, Harpyhaliaetus, Leucopternis and Parabuteo. Recently, molecular data has indicated that two other genera, Ictinia
Publicado em: 2009