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| Registros recuperados: 710 | |
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| Delapieve,Maria Laura S.; Lehmann A,Pablo; Reis,Roberto E.. |
| ABSTRACT The discovery of three new taxa of Hypoptotopomatini with ambiguous generic assignment prompted a reanalysis of the phylogenetic relationships of the tribe. The analysis focused on a data matrix of 56 terminals and 107 morphological characters comprising the three new taxa, most species of Hypoptopoma and Otocinclus, and all other species of the tribe. The 162 maximally parsimonious trees of 382 steps, consistency index of 0.41, and retention index of 0.83 were then summarized in a strict consensus tree. The results confirm the monophyly of the Hypoptopomatini, recover four genera as monophyletic (Acestridium, Hypoptopoma, Niobichthys, and Otocinclus), revealed Hypoptopoma and Oxyropsis to be non-monophyletic; and revealed two new genera within... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypoptopomatinae; Morphology; New genera; Systematics; Taxonomy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400212 |
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| 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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| Ishwarkumar,S; Pillay,P; DeGama,B. Z; Satyapal,K. S. |
| The mandibular condyle is the rounded protuberance that articulates with the mandibular fossa to form the temporomandibular joint (TMJ). The shape of the mandibular condyle may be classified according to five basic shapes viz. flattened, convex, angled, rounded and concave. Previous research indicated that variation in the shape and size of the mandibular condyle, exists and that population-specific differences may also occur. This study aimed to document the shapes and size of the mandibular condyle and determine their relationship with regard to sex, age and race (if any). The morphometric and morphological parameters of the mandibular condyle were measured and assessed in 54 dry mandible specimens (n= 108). The Wedel et al. (1978) classification scheme... |
| Tipo: Journal article |
Palavras-chave: Mandibular condyle; Mandibles; Osteology; Morphometry; Morphology. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300005 |
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| Carvalho,Marcelo R. de; Ragno,Maíra P.. |
| A new species of the relatively poorly known Neotropical freshwater stingray genus Plesiotrygon Rosa, Castello & Thorson, 1987 is described from the main channel and smaller tributaries (Ríos Itaya and Pachitea) of the upper Amazon basin in Peru. The first specimen to be collected, however, was from much farther east in Rio Solimões in 1996, just down-river from Rio Purus (specimen unavailable for this study). Plesiotrygon nana sp. nov., is a very distinctive and unusually small species of freshwater stingray (Potamotrygonidae), described here mostly from three specimens representing different size classes and stages of sexual maturity. Plesiotrygon nana sp. nov., is distinguished from its only congener, P. iwamae Rosa, Castello & Thorson,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plesiotrygon iwamae; Taxonomy; Morphology; Myliobatiformes; Rio Solimões; Río Ucayali; South America. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011000700001 |
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| García Aguilar, María de los Ángeles. |
| Se estudió la anatomía caulinar y la morfología de diez poblaciones del género Hylocereus con distribución en México con el objetivo de evaluar su variación y su contribución en la sistemática del género. En cada una de las localidades muestreadas se colectaron de 3 a 5 individuos fenológicamente maduros a fin de garantizar la mayor homogeneidad en el material. Para la obtención de los caracteres anatómicos se tomaron muestras de ramas adultas en la parte apical, media y basal de cada individuo a fin de establecer caracteres anatómicos asociados al desarrollo. Se realizó la microtecnia convencional de inclusión en parafina para el tejido primario, para el tejido secundario el material se cortó con un micrótomo de deslizamiento y los cortes se... |
| Tipo: Tesis |
Palavras-chave: Anatomía caulinar; Morfología; Variación; Hylocereus; Cactaceae; Maestría; Botánica; Caulinar anatomy; Morphology; Variation. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1469 |
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| Oliveira,Carla Lívia Santos de; David,Gustavo Serra; Carvalho,Michelly de Oliveira; Dornelas,; Araújo,Sandra; da Silva,Nailton Cavalcante; Ruiz,Cristiane Regina; Fernandes,Juliana Ruiz; Wafae,Nader. |
| In humans, the right coronary artery is dominant. However, we did not find any citations in the literature concerning anatomical indicators of dominance among dogs. We used 30 hearts from mongrels of both sexes, fixed in 10% formalin. The branches of the coronary arteries were dissected with special attention to the levels that were considered to be reference points. In 96.7%, the circumflex branch of the left coronary artery reached or went beyond the crux cordis. The subsinuosus interventricular artery, ended before reaching the apex in 21 cases, at the apex in five cases and after the apex in four cases. The paraconal interventricular artery, ended before reaching the apex in two cases, at the apex in 11 cases and after the apex in 17 cases. The region... |
| Tipo: Journal article |
Palavras-chave: Morphology; Dog hearts; Circulation; Coronary arteries. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300030 |
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| Pinheiro,Luane L.; Lima,Ana R.; Muniz,José A.P.C.; Imbeloni,Aline; Fioreto,Emerson T.; Fontes,Rodrigo F.; Cabral,Rosa; Branco,Érika. |
| The aim of this work is to study the morphological characteristics of the trachea of Saimiri sciureus through quantification and measurement of the cartilaginous rings, providing information to facilitate the election of more appropriate endotracheal tube, laryngeal mask or tracheostomy tube for anesthetic and emergency procedures, as it is a species of Neotropical primates most commonly used as biological models, and little is known about their morphology. Nine animals were investigated, being 4 adults and 5 young acquired from the Centro Nacional de Primatas (National Primate Center - CENP) - Ananindeua - PA, which died from natural causes and then fixed in aqueous buffered formalin 10%. Saimiri sciureus trachea comprises an average of 32.8 incomplete... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emergency procedure; Morphology; Respiratory system; Saimiri sciureus; Trachea. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400012 |
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| Magalhães,Marcela dos S.; Santos,Armando J. Barsante; Silva,Naisandra B. da; Moura,Carlos E. B. de. |
| This study characterized the morphology of the digestive tube of five species of sea turtles. We used specimens found dead along the coast of the state Rio Grande do Norte, as well as specimens accidentally killed as a result of pelagic longline fishing. Nineteen animals of the following species were analyzed: Chelonia mydas (Linnaeus, 1758) (n = 9), Lepidochelys olivacea (Eschscholtz, 1829) (n = 6), Caretta caretta (Linnaeus, 1758) (n = 2), Eretmochelys imbricata (Linnaeus, 1766) (n = 1) and Dermochelys coriacea (Vandelli, 1761) (n = 1). After opening the plastron, we removed the digestive organs and described the external and internal morphology of each organ. The esophagus of all species had pointed papillae on the mucosa. The stomach varied in shape... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Digestive system; Morphology. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000100008 |
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| Sant'Ana,Denise Cristina; Sallum,Maria Anice Mureb. |
| ABSTRACT A new species of the genus Anopheles Meigen (Diptera: Culicidae), Anopheles (Nyssorhynchus) striatus n. sp., preliminary designated as Anopheles CP Form, from Brazil, is here validated and described using morphological characteristics of the egg, fourth-instar larva, pupa, female and male genitalia. The species is morphologically more similar to species of the Strodei Subgroup of Anopheles (Nyssorhynchus) than to any other species of the subgenus Nyssorhynchus Blanchard. However, adult female that can be misidentified with Anopheles (Nyssorhynchus) galvaoi Causey, Deane & Deane if the identification is mainly based on the ratio of dark and white scales of the hindtarsomere 2. In addition, the characterization of the new species includes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anophelinae; Description; Distribution; Morphology; Taxonomy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000200136 |
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| Dahms, Hans-Uwe. |
| The copepodite antennule development of representatives of 6 harpacticoid families is studied and discussed in detail and that of 8 genera of harpacticoids from 7 families is schematically illustrated. Twenty-seven genera out of 17 harpacticoid families are compared on the basis of own investigations and data from the literature. The origin of newly formed segments can be determined by seta numbers of segments, relative segment length, furrows indicating previous articulations and by the position of the segment which bears the proximal aesthetasc. There are 2 zones of segment formation, both located in the middle part of the first antenna. Normal segment formation takes place distally from the second, aesthetasc-bearing segment from C I to C II and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Morphology; Postembryonic development; Taxonomy; Phylogeny; Developmental pattern; Harpacticoida. |
| Ano: 1989 |
URL: http://www.repository.naturalis.nl/record/504074 |
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| Pamboukian,Celso R. Denser; Guimarães,Luciana M.; Facciotti,Maria Cândida R.. |
| The morphology of Streptomyces olindensis (producer of retamycin, an antitumor antibiotic) grown in submerged culture was assessed by image analysis. The morphology was differentiated into four classes: pellets, clumps (or entangled filaments), branched and unbranched free filaments. Four morphological parameters were initially considered (area, convex area, perimeter, and convex perimeter) but only two parameters (perimeter and convex perimeter) were chosen to automatically classify the cells into the four morphological classes, using histogram analysis. Each morphological class was evaluated during growth carried out in liquid media in fermenter or shaker. It was found that pellets and clumps dominated in early growth stages in fermenter (due to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptomyces olindensis; Image analysis; Morphology. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100003 |
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| Specht,Alexandre; Corseuil,Elio; Benedetti,Augusto J.; Poletto,Graziela; Formentini,Aline C.. |
| The goal of this work was to describe aspects of the biology and morphology of Leucanella viridescens (Walker, 1855), a polyphytophagous species that is a pest to several crops of economical interest and whose larvae may cause erucism. Biological parameters were obtained under controlled conditions: temperature of 25 ± 1ºC, relative humidity of 70 ± 10%, and a 14 h photophase. Morphological and behavioral aspects were analyzed in each developmental phase. The larval stage had six instars, with an average growth rate of 1.396. A high degree of polyphytophagy was observed, including over 49 host plant species belonging to 25 families, especially Leguminosae, Solanaceae and Salicaceae. The considerable chromatic variability of the adults obtained from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caterpillars; Chromatic variation; Erucism; Life cycle; Morphology. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100005 |
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| Registros recuperados: 710 | |
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