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| Registros recuperados: 2.235 | |
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| Guerra-García,José M.; Krapp-Schickel,Traudl; Müller,Hans G.. |
| The Caprellidae (Crustacea: Amphipoda) of shallow waters of the Caribbean coast of Colombia, South America, are investigated. This is the first study dealing with the caprellidean fauna of this area. A total of 45 stations from Punta Brava to Punta Cañaveral, at Santa Marta region, Colombia, was selected, and samples of algae, coral rubble, sponges, hydroids, bryozoans and sediments were collected from the intertidal zone to 30 m depth. Ten species in seven genera were found (three of which are new to science): Aciconula sp., Caprella cf. penantis Leach, 1814, Caprella danilevskii Czerniavskii, 1868, Deutella caribensis n.sp., D. incerta (Mayer, 1903), D. mayeri Stebbing, 1895, Hemiaegina minuta Mayer, 1890, Paracaprella pusilla Mayer, 1890, Pseudaeginella... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphipoda; Caprellidae; Taxonomy; New species; Caribbean; Colombia. |
| Ano: 2006 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612006000100010 |
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| Chacón-Gómez,Isabel Cristina; Reyes,Javier; Santodomingo,Nadiezhda. |
| Octocorals are being included in a great variety of worldwide studies with the aim of analyzing taxonomy, ecology, biogeography, genetics and geochemistry, among other aspects. The study described here includes samples collected during the 'Macrofauna' explorations carried out by the Instituto de Investigaciones Marinas y Costeras-INVEMAR between 1998 and 2002 from shallow (20 m) to deep (500 m) waters. A total of 280 museum containers were examined. Samples were collected at 32 stations distributed along the continental shelf and upper slope of Colombian Caribbean. A total of 44 species have been recognized, 21 of them identified to species level and 23 to genus level; the species are included in 22 genera and nine families (Plexauridae, Gorgoniidae,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gorgonacea; Alcyonaria; Taxonomy; Colombia; Caribbean. |
| Ano: 2012 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612012000100010 |
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| Silva,Jaime Andrés; Zed,Sven. |
| ABSTRACT Sponges (Porifera) are important constituents of littoral habitats in the Caribbean Sea. The knowledge of their biodiversity is fundamental to carry out ecological, managerial and utilitarian research. Their taxonomy is complex, but in the Caribbean in general, and in Colombia in particular, there are important advances. With this work, some sponge species of the genera Petrosia and Xestospongia are recorded and described for the first time from the Colombian Caribbean. Petrosia (Strongylophora) davilai, Xestospongia arenosa, Xestospongia deweerdtae and Xestospongia purpurea are described and illustrated. The number of records of Petrosia and Xestospongia for the Colombian Caribbean are now three and four species, respectively. In all species, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Porifera; Caribbean; Colombia; Taxonomy; New records. |
| Ano: 2017 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612017000100113 |
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| Gutiérrez,Hugo F; Morrone,Osvaldo. |
| Recientes estudios filogenéticos con datos morfológicos y moleculares aportaron evidencia sobre la monofilia de los géneros Cenchrus, Pennisetum y Odontelytrum y, por ello, se propuso su unificación y transferencia a Cenchrus, el cual tiene prioridad. Resultados preliminares de la revisión taxonómica del género Cenchrus s.l. para América (Gutiérrez, en preparación) permitieron detectar problemas nomenclaturales. Para resolver dichos inconvenientes, en el presente trabajo se presentan nueve lectotipificaciones: Cenchrus bambusoides Caro & E.A. Sánchez, C. brevisetus E. Fourn., C. pennisetiformis Hochst. & Steud. var. intermedia Chiov., C. roseus E. Fourn., Gymnotrix mexicana E. Fourn., Hymenachne montana Griseb., Pennisetum amoenum Hochst.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cenchrus; Pennisetum; Poaceae; Paniceae; Taxonomy. |
| Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722012000100015 |
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| Magenta,Mara Angelina Galvão; Nunes,Alessandra De Deus; Mendonça,Cláudia Barbieri Ferreira; Gonçalves-Esteves,Vânia. |
| With the aim of improving inter-specific delimitation of the genus Viguiera Kunth in Brazil, a palynological analysis was undertaken with 27 taxa, representing around 77% of all occurring species. Samples were obtained from herbarium specimens and the pollen grains were analyzed through light and scanning electron microscopy. Characteristics, including the shape of the pollen grains, polar and equatorial diameter, aperture measurements, surface ornamentation and exine thickness, were registered and compared. The pollen grains were medium-sized (25 - 50 mm), isopolar and oblate spheroidal (prolate spheroidal in V. aspilioides Baker). The observed values corroborated the synonymity of some species and also highlighted certain micro-morphological differences,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asteraceae; Brazil; Compositae; Pollen; Taxonomy; Viguiera. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722010000200008 |
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| Flores,Jorge R; Suárez,Guillermo M. |
| In the present contribution, the sporophyte of Chenia lorentzii is described in detail and microphotographs are provided. In addition, the role of sporophytic characters is discussed in a phylogenetic context. To accomplish this task, first, a phylogenetic analysis of a reduced dataset of Pottiaceae genera was carried out by using molecular data (nad5, rps4, 26S) and combined data (morphology and molecular markers). Then, gametophytic and sporophytic characters were mapped onto the molecular tree and their fit to the phylogeny was assessed on the basis of their extra steps and the number of diagnosed nodes. Results suggest that sporophytic characters should be treated with caution when nomenclatural generic changes are proposed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Character reconstruction; Morphology; Taxonomy. |
| Ano: 2017 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200011 |
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| Sterrenburg,Frithjof A. S; Sar,Eugenia A; Sunesen,Inés. |
| The type materials of Pleurosigma formosum W. Smith and P. decorum W. Smith were examined. Both species were separated hitherto by size range, valve shape and stria density based on light microscopy (LM) analysis. However, the type materials show some overlap in the size and stria density ranges, with subtle differences in the oblique stria intersection angle, which is somewhat smaller for P. decorum. Scanning electron microscopy (SEM) analysis shows that both species share several ultrastructural features such as a thick saddle-shaped central raphe nodule, very long overlapping central raphe fissures, short hook-shaped terminal raphe fissures, general morphology of the internal hymenoccluded pores crossed by a recessed bar and presence of some scattered... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fine morphology; P. decorum; P. formosum; Taxonomy; Type materials. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722014000100002 |
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| Vanni,Ricardo O. |
| The papilionoid genus Stylosanthes Sw. includes about 50 spp. distributed world wide in the tropics, approximately half of them grow in South America.The present study focuses on South American Stylosanthes. Based on examinations of herbarium specimens, as well as field observations, a total of 25 taxa (23 spp. and 2 varieties) are here described and identified with a key. Most of the species have been found to be more widely distributed than expected from the previous taxonomic literature, and the genus appears to be mainly concentrated in Brazil and Paraguay. Stylosanthes leiocarpa Vogel is new to the flora of Argentina and the presence of S. nervosa J. F. Macbr. is confirmed in Argentina. The nomenclature of S. guianensis (Aubl.) Sw. is analyzed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leguminosae; South America; Stylosanthes; Taxonomy; Distribution; Nomenclature. |
| Ano: 2017 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000300012 |
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| Jiménez-Mejías,Pedro; Fabbroni,Mariela; Donadío,Sabina; Rodríguez-Palacios,Giovanni E; Hilpold,Andreas; Martín-Bravo,Santiago; Waterway,Marcia J; Roalson,Eric H. |
| We present relevant data about the taxonomy and distribution of 20 species of the genus Carex in the Neotropics from the Caribbean region to Patagonia. We provide a total of 19 new records, two of them for species not previously recorded from South America, ten species newly reported from different countries, and seven species here reported as new regional records in Argentina, Bolivia, and Chile. We lectotypify nine species names (C. brehmeri, C. catharinensis, C. ecuadorica, C. firmicaulis, C. fuscula, C. mandoniana, C. phleoides, C. polysticha, and C. subantarctica) and epitypify one of these names (C. fuscula). Finally, we propose Carex koyamae as a new synonym of Carex phleoides. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropics; Nomenclature; Taxonomy; Uncinia. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000400014 |
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| Cinto,Isabel E.; Dokmetzian,Diana A.; Ranalli,María E.. |
| The aim of this study was to delimit two Iodophanus species: I. carneus and I. testaceus , based on morphological characteristics and electrophoretic patterns of their intracellular isozymes. Twenty monosporic strains were used, including five belonging to I. granulipolaris as a control. Fourteen isozyme systems were tested, and the five having the best resolution selected: aspartate aminotransferase, esterases, alkaline phosphatase, glutamate dehydrogenase, and superoxide dismutase. These analyses confirmed the similarity between I. carneus and I. testaceus , since they both produced the same band patterns, which were in turn different from the band pattern of I. granulipolaris. So, as we couldn´t find any character wich permit us to classify the isolated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Lodophanus; Isozymes; Synonymy; Taxonomy. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722007000200005 |
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| Mendonça,Joalice de Oliveira; Cervi,Armando Carlos; Guimarães,Olavo Araújo. |
| An inventory of the Erythroxylum's species from the State of Paraná, Brazil, was done and the following species were found: E. ambiguum Peyr., E. amplifolium (Mart.) O.E. Schulz, E. anguifugum Mart., E. argentinum O.E. Schulz, E. buxus Peyr., E. campestre A. St.-Hil., E. cuneifolium (Mart.) O.E. Schulz, E. cuspidifolium Mart., E. deciduum A. St.-Hil., E. gonocladum (Mart.) O.E. Schulz, E. nanum A. St.-Hil., E. pelleterianum A. St.-Hil., E. microphyllum A. St.-Hil., E. myrsinites Mart. and E. suberosum A. St.-Hil.. All of then are taxonomically revised and a new synonym is presented: E. cuneifolium (Mart.) O.E. Schulz var. squarrosum O.E. Schulz as synonym of E. cuneifolium (Mart.) O.E. Schulz. Is also discussed the validity of the genus name Erythroxylon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Erythroxylaceae; Erythroxylum; Flora; Paraná; Taxonomy. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300013 |
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| Registros recuperados: 2.235 | |
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