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Registros recuperados: 51
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A morphometric and molecular study of Anastrepha pickeli Lima (Diptera: Tephritidae) Neotropical Entomology
Bomfim,ZV; Lima,KM; Silva,JG; Costa,MA; Zucchi,RA.
This study investigated the level of morphometric and genetic variability among populations of Anastrepha pickeli Lima from several localities in Brazil, one locality in Bolivia and one in Paraguay. Traditional and geometric morphometric analyses were used, as well as sequencing of a fragment of the cytochrome oxidase gene (COI). Six variables were measured from the aculeus for traditional morphometric analysis and 14 landmarks from the right wing were used for geometric analysis, using 10 specimes/population. The aculeus tip length, aculeus width at the end of the cloaca opening, and the serrate part length contributed with 62.7% for grouping. According to the results from traditional morphometry, there was no significant difference, but the multivariate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit fly; Geometric and traditional morphometry; Molecular phylogeny; Cytochrome oxidase I (COI); Taxonomy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000500010
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A synopsis of the saddle fungi (Helvella: Ascomycota) in Europe – species delimitation, taxonomy and typification Naturalis
Skrede, I.; Carlsen, T.; Schumacher, T..
Helvella is a widespread, speciose genus of large apothecial ascomycetes (Pezizomycete: Pezizales) that are found in terrestrial biomes of the Northern and Southern Hemispheres. This study represents a beginning on assessing species limits and applying correct names for Helvella species based on type material and specimens in the university herbaria (fungaria) of Copenhagen (C), Harvard (FH) and Oslo (O). We use morphology and phylogenetic evidence from four loci – heat shock protein 90 (hsp), translation elongation factor alpha (tef), RNA polymerase II (rpb2) and the nuclear large subunit ribosomal DNA (LSU) – to assess species boundaries in an expanded sample of Helvella specimens from Europe. We combine the morphological and phylogenetic information...
Tipo: Article / Letter to the editor Palavras-chave: Molecular phylogeny; Pezizales; Systematics.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/636691
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Ailadinium reticulatum gen. et sp. nov. (Dinophyceae), a New Thecate, Marine, Sand-Dwelling Dinoflagellate from the Northern Red Sea ArchiMer
Saburova, Maria; Chomerat, Nicolas.
A new photosynthetic, sand-dwelling marine dinoflagellate, Ailadinium reticulatum gen. et sp. nov., is described from the Jordanian coast in the Gulf of Aqaba, northern Red Sea, based on detailed morphological and molecular data. A. reticulatum is a large (53–61 μm long and 38–48 μm wide), dorsoventrally compressed species, with the epitheca smaller than the hypotheca. The theca of this new species is thick and peculiarly ornamented with round to polygonal depressions forming a foveate-reticulate thecal surface structure. The Kofoidian thecal tabulation is APC (Po, cp), 4′, 2a, 6′′, 6c, 4s, 6′′′, 1p, 1′′′′ or alternatively it can be interpreted as APC, 4′, 2a, 6′′, 6c, 4s, 6′′′, 2′′′′. The plate pattern of A. reticulatum is noticeably different from...
Tipo: Text Palavras-chave: Benthic dinoflagellates; Dinophyceae; Gulf of Aqaba; Jordan; LSU rDNA; Molecular phylogeny; Morphology; Red Sea; SSU rDNA; Taxonomy.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00226/33678/38183.pdf
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An emended description and phylogeny of the little-known Prorocentrum sipadanense Mohammad-Noor, Daugbjerg & Moestrup (Prorocentrales, Dinophyceae) from the Indian Ocean, Oman ArchiMer
Saburova, Maria; Chomerat, Nicolas.
A small Prorocentrum species was found during a pilot taxonomic survey of marine benthic dinoflagellates in the northwestern Arabian Sea, Oman. Based on the study of cells from natural samples and laboratory cultures using light and scanning electron microscopy, this taxon is attributed to the little-known Prorocentrum sipadanense, recorded so far only from East Malaysia. The description of this species has been emended to include details of internal cell structure, composition of its periflagellar area and intraspecific variability in size, shape and pore pattern. Round to oval or ovoid cells of P. sipadanese are surrounded by a prominent marginal ridge and are 17.9–23.9 µm long and 15.0–19.8 µm wide, with a foveate to reticulate thecal plate surface and...
Tipo: Text Palavras-chave: Arabian Sea; Benthic dinoflagellates; Molecular phylogeny; Morphology; Oman; Prorocentrum sipadanense; Taxonomy.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00319/42990/42560.pdf
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Characterization of actin genes in Bonamia ostreae and their application to phylogeny of the Haplosporidia ArchiMer
Lopez Flores, L; Suarez Santiago, V; Longet, D; Saulnier, Denis; Chollet, Bruno; Arzul, Isabelle.
Bonamia ostreae is a protozoan parasite that infects the European flat oyster Ostrea edulis, causing systemic infections and resulting in massive mortalities in populations of this valuable bivalve species. In this work, we have characterized B. ostreae actin genes and used their sequences for a phylogenetic analysis. Design of different primer sets was necessary to amplify the central coding region of actin genes of B. ostreae. Characterization of the sequences and their amplification in different samples demonstrated the presence of 2 intragenomic actin genes in B. ostreae, without any intron. The phylogenetic analysis placed B. ostreae in a clade with Minchinia tapetis, Minchinia teredinis and Haplosporidium costale as its closest relatives, and...
Tipo: Text Palavras-chave: Molecular phylogeny; Actin gene; Ostrea edulis parasite; Bonamia ostreae.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3562.pdf
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Contribution of WUSCHEL-related homeobox (WOX) genes to identify the phylogenetic relationships among Petunia species Genet. Mol. Biol.
Segatto,Ana Lúcia Anversa; Thompson,Claudia Elizabeth; Freitas,Loreta Brandão.
Abstract Developmental genes are believed to contribute to major changes during plant evolution, from infrageneric to higher levels. Due to their putative high sequence conservation, developmental genes are rarely used as molecular markers, and few studies including these sequences at low taxonomic levels exist. WUSCHEL-related homeobox genes (WOX) are transcription factors exclusively present in plants and are involved in developmental processes. In this study, we characterized the infrageneric genetic variation of Petunia WOX genes. We obtained phylogenetic relationships consistent with other phylogenies based on nuclear markers, but with higher statistical support, resolution in terminals, and compatibility with flower morphological changes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Molecular phylogeny; Recently diverged species; Developmental genes.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000400658
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Cyanobacterial nitrogenases: phylogenetic diversity, regulation and functional predictions Genet. Mol. Biol.
Esteves-Ferreira,Alberto A.; Cavalcanti,João Henrique Frota; Vaz,Marcelo Gomes Marçal Vieira; Alvarenga,Luna V.; Nunes-Nesi,Adriano; Araújo,Wagner L..
Abstract Cyanobacteria is a remarkable group of prokaryotic photosynthetic microorganisms, with several genera capable of fixing atmospheric nitrogen (N2) and presenting a wide range of morphologies. Although the nitrogenase complex is not present in all cyanobacterial taxa, it is spread across several cyanobacterial strains. The nitrogenase complex has also a high theoretical potential for biofuel production, since H2 is a by-product produced during N2 fixation. In this review we discuss the significance of a relatively wide variety of cell morphologies and metabolic strategies that allow spatial and temporal separation of N2 fixation from photosynthesis in cyanobacteria. Phylogenetic reconstructions based on 16S rRNA and nifD gene sequences shed light on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyanobacteria; Evolution; Hydrogen; Nitrogen fixation; Molecular phylogeny.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200261
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Davalliaceae in Peninsular Malaysia, a preliminary study based on trnL-F region Naturalis
Maideen, H.; Milne, R.I.; Gibby, M..
A preliminary molecular analysis based on trnL-F region is presented for 17 taxa of Davalliaceae in Peninsular Malaysia. Maximum parsimony and Bayesian analysis were conducted on the dataset in order to establish a robust phylogenetic relationship between taxa. The results of analysis indicate incongruence with morphological classification. All genera of Davalliaceae in the study area are paraphyletic except Araiostegia which is represented by only a single species. In addition it partially agrees with recent phylogeny base on rbcL data.
Tipo: Article / Letter to the editor Palavras-chave: Davalliaceae; Molecular phylogeny; Peninsular Malaysia; TrnL-F.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/524899
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Description and phylogenetic position of Plagiolemma distortum sp. nov., a new raphid diatom (Bacillariophyceae) from French coastal waters ArchiMer
Nezan, Elisabeth; Bilien, Gwenael; Boulben, Sylviane; Mertens, Kenneth; Chomerat, Nicolas.
A new marine raphid diatom, Plagiolemma distortum Nézan, sp. nov. is described from plankton samples from the Atlantic Ocean, south Brittany (north-western France), where it was regularly observed, but never in high abundances. Cells have an unusual and complex shape under light microscopy (LM) depending on their position and orientation. The two valves are highly vaulted and narrow in width (transapical axis). Cells contain four complexly lobed plastids and a variable number of refractive granules without particular localization. In addition, capsules containing motile cells were observed. Ultrastructural details of the frustules were investigated using scanning electron microscopy (SEM). The girdle bands are simple. Each valve possesses a sigmoid raphe...
Tipo: Text Palavras-chave: Capsules; Habitat; Molecular phylogeny; Plastids; Raphid diatom; Video.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00441/55235/56797.pdf
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Description of a new and highly distinctive genus and species of Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) from the Brazilian southern Amazon Rev. Bras. entomol.
Freitas,André V.L.; Mota,Luísa L.; Zacca,Thamara; Barbosa,Eduardo P..
ABSTRACT A new genus and species of Euptychiina (Satyrinae), Cristalinaia vitoria Mota, Zacca & Freitas gen. et sp. nov., is described based on three specimens collected in the region of the Cristalino River, Alta Floresta, Mato Grosso, Brazil. This rare species is known only from this region, where it flies inside the dense bamboo patches typical of that area. The last instar larva and the pupa are described; the larva was observed feeding on mature leaves of the common bamboo Guadua aff. paniculata Munro.urn:lsid:zoobank.org:pub:D61EDE8D-CAE9-41C6-B24D-BB789873566E
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonia; Immature stages; Morphology; Molecular phylogeny; Taxonomy.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000300254
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Description of a new species of Moenkhausia (Characiformes: Characidae) from the upper Paraguay basin, Central Brazil, with comments on its phylogenetic relationships Neotropical Ichthyology
Britzke,Ricardo; Troy,Waldo P.; Oliveira,Claudio; Benine,Ricardo C..
ABSTRACT A new species of Moenkhausia is described from tributaries of the upper rio Sepotuba, Paraguay basin, Brazil. The new species is distinguished from its congeners by a combination of characters, including an inconspicuous oval-shaped vertically elongated humeral blotch, extending horizontally from third through five lateral-line scales, and vertically from third row above lateral line to first row below it, followed by a diffuse field of dark chromatophores in the flank, combined with a well-defined dark line at the base of the anal fin. Furthermore, the phylogenetic position of the new species is presented based on molecular data, showing a close relationship among species of Moenkhausia and Hemigrammus that have a well-defined dark line at the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemigrammus; Molecular phylogeny; Neotropical tetras; Taxonomy.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200211
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First report and characterization of Fusarium circinatum, the causal agent of pitch canker in Brazil. Repositório Alice
PFENNING, L. H.; COSTA, S. da S.; MELO, M. P. de; COSTA, H.; VENTURA, J. A.; AUER, C. G.; SANTOS, A. F. dos.
Pitch canker is one of the most important diseases of pine trees worldwide, including South America. The causal agent of this disease is Fusarium circinatum, a member of the Gibberella fujikuroi complex (GFC). In South America, the species is reported from Colombia, Uruguay and Chile, but is considered a quarantine organism in Brazil. In this study we characterized isolates obtained from symptomatic pine seedlings intercepted in a nursery in Santa Catarina State using phylogenetic analyses, crossings and morphological markers. The Brazilian isolates grouped with reference material in an unique clade and formed fertile perithecia when crossed with reference tester strains. The detailed characterization given here and the availability of tester strains will...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pinus; Fusarium circinatum; Gibberella fujikuroi; Fungo quarentenário; Patógeno; Ocorrência; Brasil; Pitch canker; Mating population; Molecular phylogeny.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/988490
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Genera of diaporthalean coelomycetes associated with leaf spots of tree hosts Naturalis
Crous, P.W.; Summerell, B.A.; Alfenas, A.C.; Edwards, J.; Pascoe, I.G.; Porter, I.J.; Groenewald, J.Z..
Four different genera of diaporthalean coelomycetous fungi associated with leaf spots of tree hosts are morphologically treated and phylogenetically compared based on the DNA sequence data of the large subunit nuclear ribosomal DNA gene (LSU) and the internal transcribed spacers and 5.8S rRNA gene of the nrDNA operon. These include two new Australian genera, namely Auratiopycnidiella, proposed for a leaf spotting fungus occurring on Tristaniopsis laurina in New South Wales, and Disculoides, proposed for two species occurring on leaf spots of Eucalyptus leaves in Victoria. Two new species are described in Aurantiosacculus, a hitherto monotypic genus associated with leaf spots of Eucalyptus in Australia, namely A. acutatus on E. viminalis, and A....
Tipo: Article / Letter to the editor Palavras-chave: Leaf spot disease; Molecular phylogeny; Systematics.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/531869
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Host specificity and phylogenetic relationships among Atlantic Ovulidae (Mollusca: Gastropoda) Naturalis
Reijnen, B.T.; Hoeksema, B.W.; Gittenberger, E..
Ovulid gastropods and their octocoral hosts were collected along the leeward coast of Curaçao, Netherlands Antilles. New molecular data of Caribbean and a single Atlantic species were combined with comparable data of Indo-Pacific Ovulidae and a single East-Pacific species from GenBank. Based on two DNA markers, viz. CO-I and 16S, the phylogenetic relationships among all ovulid species of which these data are available are reconstructed. The provisional results suggest a dichotomy between the Atlantic and the Indo-Pacific taxa. Fully grown Simnialena uniplicata closely resembles juvenile Cyphoma gibbosum conchologically. Cymbovula acicularis and C. bahamaensis might be synonyms. The assignments of Caribbean host species for Cyphoma gibbosum, C....
Tipo: Article / Letter to the editor Palavras-chave: Anthozoa; Alcyonacea; Caribbean; Curaçao; Molecular phylogeny; Symbiosis; 42.73.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/336926
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Integrative taxonomy of Abacarus mites (Eriophyidae) associated with hybrid sugarcane plants, including description of a new species. Repositório Alice
DUARTE, M. E.; MENDONÇA, R. S. de; SKORACKA, A.; SILVA, E. S.; NAVIA, D..
bitstream/item/202178/1/Duarte2019-Article-IntegrativeTaxonomyOfAbacarusM.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Phytophagous mite; Eriophyoidea; Molecular phylogeny; Multivariate morphometry; Saccharum.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112340
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ITS-rDNA phylogeny of Colletotrichum spp. causal agent of apple Glomerella leaf spot Ciência Rural
Giaretta,Diorvania Ribeiro; Bogo,Amauri; Coelho,Cileide Maria Medeiros; Guidolin,Altamir Frederico; Dantas,Adriana Cibele de Mesquita; Gomes,Eliane Aparecida.
Several diseases have affected apple production, among them there is Glomerella leaf spot (GLS) caused by Colletotrichum spp. The first report of this disease in apple was in plants nearby citrus orchards in São Paulo State, Brazil. The origin of this disease is still not clear, and studies based on the molecular phylogeny could relate the organisms evolutionarily and characterize possible mechanisms of divergent evolution. The amplification of 5.8S-ITS (Internal Transcribed Spacer) of rDNA of 51 pathogenic Colletotrichum spp. isolates from apples, pineapple guava and citrus produced one fragment of approximately 600 bases pairs (bp) for all the isolates analyzed. The amplified fragments were cleaved with restriction enzymes, and fragments from 90 to 500bp...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pineapple guava; Citrus; Molecular phylogeny; In silico; Phylogenetic tree.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400010
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Juglanconis gen. nov. on Juglandaceae, and the new family Juglanconidaceae (Diaporthales) Naturalis
Voglmayr, H.; Castlebury, L.A.; Jaklitsch, W.M..
Molecular phylogenetic analyses of ITS-LSU rDNA sequence data demonstrate that Melanconis species occurring on Juglandaceae are phylogenetically distinct from Melanconis s.str., and therefore the new genus Juglanconis is described. Morphologically, the genus Juglanconis differs from Melanconis by light to dark brown conidia with irregular verrucae on the inner surface of the conidial wall, while in Melanconis s.str. they are smooth. Juglanconis forms a separate clade not affiliated with a described family of Diaporthales, and the family Juglanconidaceae is introduced to accommodate it. Data of macro- and microscopic morphology and phylogenetic multilocus analyses of partial nuSSU-ITS-LSU rDNA, cal, his, ms204, rpb1, rpb2, tef1 and tub2 sequences revealed...
Tipo: Article / Letter to the editor Palavras-chave: Ascomycota; Diaporthales; Molecular phylogeny; New species; Pathogen; Systematics.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/622492
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Laciniporus arabicus gen. et sp. nov. (Dinophyceae, Peridiniales), a new thecate, marine, sand-dwelling dinoflagellate from the northern Indian Ocean (Arabian Sea) ArchiMer
Saburova, Maria; Chomérat, Nicolas.
A new thecate, photosynthetic, sand‐dwelling marine dinoflagellate, Laciniporus arabicus gen. et sp. nov., is described from the subtidal sediments of the Omani coast in the Arabian Sea, northern Indian Ocean, based on detailed morphological and molecular data. Cells of L. arabicus are small (16.2‐30.1 μm long and 13.1‐23.2 μm wide), dorsoventrally compressed, with a small apical flap‐shaped projection pointing to the left. The thecal plate pattern is distinguished by minute first precingular plate and sulcus, which extends into the epitheca, with large anterior and right sulcal plates. The Kofoidian thecal tabulation is Po, X, 4′, 2a, 7′′, 6c, 6s, 5′′′, 2′′′′. Morphologically, the revealed plate pattern has an affinity to the Peridiniales, and LSU rDNA...
Tipo: Text Palavras-chave: Arabian Sea; Benthic dinoflagellates; Dinophyceae; Laciniporus arabicus; Molecular phylogeny; Morphology; Oman; Peridiniales; Taxonomy.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00454/56614/58315.pdf
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Meiofaunal cryptic species challenge species delimitation: the case of the Monocelis lineata (Platyhelminthes: Proseriata) species complex Naturalis
Scarpa, F.; Cossu, P.; Lai, T.; Sanna, D.; Curini-Galletti, M.; Casu, M..
Given the pending biodiversity crisis, species delimitation is a critically important task in conservation biology, but its efficacy based on single lines of evidence has been questioned as it may not accurately reflect species limits and relationships. Hence, the use of multiple lines of evidence has been portrayed as a means to overcome identification issues arising from gene/ species tree discordance, morphological convergence or recent adaptive radiations. Here, the integrative taxonomic approach has been used to address the study of the Monocelis lineata species complex. The taxonomic resolution of the complex is challenging, as the species lacks sclerotised copulatory structures, which as a rule of thumb aid identification in Proseriata. Eighteen...
Tipo: Article / Letter to the editor Palavras-chave: Integrative taxonomic approach; Meiofauna conservation; Molecular dating; Molecular phylogeny; Molecular taxonomy; RDNA 18S-28S.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/607690
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Molecular discrimination of pouched four-eyed opossums from the Mamirauá Reserve in the Brazilian Amazon Genet. Mol. Biol.
Nunes,Cláudia; Ayres,Jose Marcio; Sampaio,Iracilda; Schneider,Horacio.
Previous cytochrome B (CytB) mtDNA studies have suggested four species for the opossum genus Philander (four-eyed opossums), three (P. mcilhennyi, P. andersoni and P. opossum) from the Amazon and one (P. frenata) from the Brazilian Atlantic forest. During a faunal survey nine specimens of Philander sp. and four of Didelphis marsupialis were collected in the Mamirauá Sustainable Reserve, Amazonas State, Brazil. Preliminary analyses based on morphology and geographical distributions were not conclusive, suggesting that Philander specimens could belong to either P. andersoni or P. opossum. In order to elucidate the relationship of this taxon to the remaining Amazonian taxa, seven Philander and two Didelphis specimens animals were sequenced for the cytB mtDNA...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytochrome B; Mamirauá; Molecular phylogeny; MtDNA; Philander; Pouched four-eyed opossum.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200015
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