Molecular Systematics
Mostrando 1-12 de 59 artigos, teses e dissertações.
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1. A phylogenetic investigation of the Neotropical genus Alphamenes van der Vecht, 1977 (Hymenoptera, Vespidae, Eumeninae)
ABSTRACT Advances in potter wasp systematics have been achieved recently, with classificatory changes resulting from analyses based upon large scale molecular datasets. For the Neotropics, recent hypotheses point to the occurrence of an exclusive clade recognized within the tribe Eumenini. In this group, several contributions regarding taxonomy and systemati
Rev. Bras. entomol.. Publicado em: 2019-03
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2. Review of the family Rivulidae (Cyprinodontiformes, Aplocheiloidei) and a molecular and morphological phylogeny of the annual fish genus Austrolebias Costa 1998
ABSTRACT The family Rivulidae is the fourth most diverse clade of Neotropical fishes. Together with some genera of the related African family Nothobranchiidae, many rivulids exhibit a characteristic annual life cycle, with diapausing eggs and delayed embryonic development, which allows them to survive in the challenging seasonal ponds that they inhabit. Rivu
Neotrop. ichthyol.. Publicado em: 18/10/2018
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3. Pollen diversity in selected species of the tribe Chironieae (Gentianaceae Juss.) that occur in the Atlantic Forest, Brazil
ABSTRACT Based on molecular data, the tribe Chironieae (Gentianaceae) is divided into three subtribes. This study aims to describe the pollen morphology of representatives of two of the three subtribes that occur in the Atlantic Forest in order to contribute to a better understanding of the palynology of these taxa and to clarify the taxonomy of the family:
Acta Bot. Bras.. Publicado em: 2017-03
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4. Response paper: Morphometric article by Mejía et al. 2015 alluding genera Herichthys and Nosferatu displays serious inconsistencies
ABSTRACT In the present response paper, the article entitled "Morphometric variation of the Herichthys bartoni (Bean, 1892) species group (Teleostei: Cichlidae): How many species comprise H. labridens (Pellegrin, 1903)?" by Mejía et al . 2015 is critically reviewed. The current review pinpoints some of the more conspicuous conceptual inconsistencies and fun
Neotrop. ichthyol.. Publicado em: 2015-12
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5. Vriesea (Bromeliaceae, Tillandsioideae): a cladistic analysis of eastern Brazilian species based on morphological characters
Abstract Vriesea, with about 280 species distributed in two sections, Vriesea and Xiphion, is recognized as polyphyletic. We provide the cladistic analysis based on morphological data, with emphasis on species from eastern Brazil, its main center of diversity, which emerged as a monophyletic group in previous molecular and combined analysis. The data matrix
Rodriguésia. Publicado em: 2015-06
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6. Notes on the systematics of the orchid-bee genus Eulaema (Hymenoptera, Apidae)
Notes on the systematics of the orchid-bee genus Eulaema (Hymenoptera, Apidae). The classification of the genus Eulaema is modified in order to make it congruent with recent phylogenetic hypotheses based on molecular data. The speciosa group, containing E. peruviana, E. speciosa and related species, is removed from E. (Eulaema) and transferred to E. (Apeulae
Rev. Bras. entomol.. Publicado em: 2014-09
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7. Estudos moleculares de espécies do gênero Trichogramma Westwood, 1833 (Hymenoptera: Trichogrammatidae) e detecção de Wolbachia spp. (Rickettsiales: Anaplasmataceae).
As espécies de Trichogramma são identificadas por meio da morfologia da genitália do macho, sendo dificultada pelo tamanho reduzido do indivíduo (0,25 mm) e/ou a presença de espécies crípticas. Por esta razão, a biologia molecular se constituí em uma boa alternativa para a identificação de espécies de Trichogramma, sendo também utilizada na iden
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/11/2012
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8. Revisão taxonômica e filogenia de Orthophytum Beer (Bromeliaceae, Bromelioideae) / Taxonomic revision and phylogeny of Orthophytum Beer (Bromeliaceae, Bromelioideae)
The genus Orthophytum Beer (Bromeliaceae) comprises 46 species geographically distributed in eastern Brazil extending from the state of Ceará in the North, to Minas Gerais and Espírito Santo in the South. The growth form of these plants is typically lithophytic, only rarely terrestrial, and granitic or quartzitic rocky outcrops constitute their favorite su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/09/2012
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9. Sistemática molecular e biogeografia histórica do gênero Aratinga (Psittacidae, Aves) / Molecular systematics and historical biogeography of genus Aratinga (Psittacidae, Aves)
A família Psittacidae possui 332 espécies de papagaios, periquitos e afins, e os táxons Neotropicais formam um grupo monofilético (tribo Arini), dentro desta tribo está o gênero Aratinga. A sistemática deste gênero é mal resolvida, com poucos estudos morfológicos e algumas filogenias moleculares que apontam que não seja monofilético. Porém, é p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
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10. The complete mitochondrial genome of the small yellow croaker and partitioned Bayesian analysis of Sciaenidae fish phylogeny
To understand the phylogenetic position of Larimichthys polyactis within the family Sciaenidae and the phylogeny of this family, the organization of the mitochondrial genome of small yellow croaker was determined herein. The complete, 16,470 bp long, mitochondrial genome contains 37 mitochondrial genes (13 protein-coding, 2 ribosomal RNA and 22 transfer RNA
Genetics and Molecular Biology. Publicado em: 20/01/2012
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11. Towards a phylogenetic classification of Lychnophorinae (Asteraceae: Vernonieae) / Rumo a uma classificação filogenética de Lychnophorinae (Asteraceae: Vernonieae)
A phylogenetic hypotesis of American Vernonieae based on three molecular regions (ITS, ndhF, rpl32-trnL) and on a morphological dataset reveals the existence of four main lineages in the group. Three of these lineages correspond, with a few adjustments, to subtribes Chrestinae, Lychnophorinae and Vernoniiae. The last lineage is mainly composed of Lepidaploin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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12. Análises filogenéticas e filogeográficas do complexo de espécies Hypostomus ancistroides (Siluriformes: Loricariidae) / Phylogenetic and phylogeographic analysis of the Hypostomus ancistroides (Siluriformes: Loricariidae) species complex
O gênero Hypostomus (Siluriformes: Loricariidae) com cerca de 130 espécies nominais, se destaca como um dos mais diversos e amplamente distribuídos gêneros de peixes de água doce neotropical. Devido a sua ampla distribuição e alta diversidade, os conhecimentos taxonômicos, filogenéticos e biogeográficos para as espécies do gênero são ainda consi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2011