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| Registros recuperados: 246 | |
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| Hansen, J.E.. |
| Collete and Chao (1975) reviewed the systematic and morphology of the Genus Sarda and relatives ((Tribe Sardini), including into their analysis a few S.sarda from the SW Atlantic. Before that, Demir (1964)dealt with the meristic data of the same species from the Black Sea. This paper in concerned with the featuring of the bonito caught in Argentina, from both a morphometric and a meristic point of view. The study made the differences reported by Collette and Chao (op.cit.)among W and E S.sarda populations to be more conspicuous, because our samples had even lower values han those from the NW. |
| Tipo: Journal Contribution |
Palavras-chave: Meristic counts; Morphometry. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/1966 |
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| Almeida,M.D. de; Caldas,A; Almeida,J.R. de. |
| The species Phaleria testacea Say, 1824 (Coleoptera, Tenebrionidae) varies a lot in size, and its populations along the coast of Brazil, where it lives buried in sandy beaches, have temporal and geographical variation in density. In order to find out which factors were contributing to these variations, we sampled populations from three different areas in Rio de Janeiro, during summer and winter. Simultaneously, we made an analysis of the different substracts where the individuals were found, including their total fresh weight. The results show a significant difference in size of individuals between and within populations, when summer and winter were compared. There is also a positive association between the population density of P. testacea and the amount... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coleoptera; Tenebrionidae; Phaleria testacea; Morphometry; Abundance. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000100005 |
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| Pacheco Tack, R.; Cousseau, M.B.. |
| The aim of this paper is to discuss the validity of the taxonomic status formerly assigned to the rough scad inhabiting shelf waters off Buenos Aires Province, Argentina. Until recently the species had been considered, mainly by Argentine authors, as Trachurus picturatus australis, on the basis of a description by Nani (1950). Other authors, however, consider that the only valid species for the West Atlantic is Trachurus lathami. In general terms, there references are based on rather scarce material for this region. In this paper, we compare meristic and morphometric data from 160 specimens collected off Mar del Plata. Statistical analysis of the characteristics lead us to conclude that the valid scientific name of the Argentine rough scad is Trachurus... |
| Tipo: Journal Contribution |
Palavras-chave: Morphometry; Meristic counts; Taxonomy; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_7631. |
| Ano: 1994 |
URL: http://hdl.handle.net/1834/1934 |
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| Arntzen, J.W.; García-París, M.. |
| Allozyme variation in 31 to 50 presumptive loci of 12 populations of European midwife toads of the genus Alytes show appreciable genetic divergences (DiNe from 0.29 to 0.72) among four groups. These groups correspond to A. cisternasii Boscá, 1879, A. obstetricans (Laurenti, 1768), A. muletensis (Sanchiz & Adrover, 1979), and a new species from the Betic mountains described here as A. dickhilleni n. sp. Smaller divergences among geographic groups of populations of A. obstetricans (up to DNei = 0.17) support the existence of three geographic units in Europe corresponding to the previously recognized subspecies A. o. obstetricans and A. o. boscai Lataste, 1879, plus a third one described here under the designation of A. o. almogavarii n. ssp. The analysis... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Allozymes; Alytes; Midwife toads; Morphometry; Spain; Taxonomy. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/504393 |
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| Pineda, S.E.; Aubone, A.; Brunetti, N.E.. |
| Beaks of Loliginid squids have very similar morphological features making identification of the species to be quite difficult. A new metodology to identify species from the relative growth of some parts of the beak is presented. Samples of Loligo gahi and Loligo sanpaulensiswere obtained from ten reserch cruises of RVS "Dr. Holmberg" and "Captain Oca Balda" and eight commercial landings at Mar del Plata Port during the period 1992-1993. The results obtained using the new metodology (Metric Discriminant Criterium)were compared with those resulting from the application of the Fisher's Lineal Discriminant Criterium. Both mantle length - rostral length and total weight - rostral length relationships, corresponding to each species were fitted. Either upper or... |
| Tipo: Journal Contribution |
Palavras-chave: Morphometry; Methodology; Growth curves; Methodology; Http://aims.fao.org/aos/agrovoc/c_12522. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/1961 |
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| Brunetti, N.E.; Ivanovic, M.L.. |
| A description of Illex argentinus beaks, made on the basis of qualitative and quantitative characteristics, is presented. Likewise the equations that represent the relationships between the rostral length of each beak with the mantle length and total weight of squids are proposed, as a tool for reconstructing them. A total of 291 squids, comprising the complete size range, from juveniles to adults,were analyzed for the latter purpose. The morphometric description was made on a total of 90 individuals from the Argentine Sea, taking the following measurements on each beak: rostral length, hood length,crest length, wing length and wing width. Results showed that Illex argentinus beaks present the general scheme of that corresponding to the Ommastrephidae... |
| Tipo: Journal Contribution |
Palavras-chave: Animal morphology; Morphometry; Squid culture; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_421. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/1926 |
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| The myenteric plexus of the digestive tract of the wild mouse Calomys callosus was examined using a histochemical method that selectively stains nerve cells, and the acetylcholinesterase (AChE) histochemical technique in whole-mount preparations. Neuronal density was 1,500 ± 116 neurons/cm2 (mean ± SEM) in the esophagus, 8,900 ± 1,518 in the stomach, 9,000 ± 711 in the jejunum and 13,100 ± 2,089 in the colon. The difference in neuronal density between the esophagus and other regions was statistically significant. The neuron profile area ranged from 45 to 1,100 µm2. The difference in nerve cell size between the jejunum and other regions was statistically significant. AChE-positive nerve fibers were distributed within the myenteric plexus which is formed by... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Myenteric plexus; Wild mouse; Calomys callosus; Morphometry; Histochemistry. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000500009 |
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| Souza,N.B.; Liberti,E.A.; De-Souza,R.R.. |
| The submucous plexus of the normal small and large intestine of Calomys callosus was studied by NADH and AChE histochemical techniques and by transmission and scanning electron microscopy. The plexus contains (mean ± SD) 7,488 ± 293 neurons/cm2 in the duodenum, 5,611 ± 836 in the jejunum, 2,741 ± 360 in the ileum, 3,067 ± 179 in the cecum, and 3,817 ± 256 in the proximal colon. No ganglia or nerve cell bodies were seen in the esophagus, stomach, distal colon or rectum. The neurons are pear-shaped with a round or oval nucleus and the neuronal cell profile areas were larger in the large intestine than in the small intestine. Most of the neurons display intense AChE activity in the cytoplasm. AChE-positive nerve fibers are present in a primary meshwork of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Submucous plexus; Wild mouse; Morphometry; Histochemistry; Ultrastructure; Calomys callosus. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500007 |
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| Александров, В. В.. |
| Исследовано влияние гранулометрического состава грунта на морфоструктуру особей Zostera marina L. Выявлена зависимость морфометрических параметров материнских и дочерних побегов от содержания гранулометрических фракций. Исследуемые параметры объединены в три группы по степени зависимости от процентной доли фракций: 1) вес и размерные характеристики материнского и дочерних побегов; 2) признаки подземной сферы и вегетативного размножения; 3) площадь поверхности листьев. |
| Tipo: Journal Contribution |
Palavras-chave: Morphometry. |
| Ano: 2001 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/563 |
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| Machado,Vilmar; Araújo,Aldo M. de; Mosmann,Cleri S.. |
| This study presents data on morphometric variation for length and width of elytra in tive sympatric species of the genus Chauliognathus Hentz, 1830: C. flavipes Fabricius, 1781, C. octomaculatus Pie, 1915, C. expansus Waterhouse, 1878, C. fallax Germar, 1824 and C. lineatus Zwetsch & Machado, 2000. The meaning of this variation is discussed in the light of the theory of mimicry and visual communication between prey and predator. Females are larger than males in all species, except C. expansus. The analysis of variance for length of elytron as well as for width showed that the differences between species are significant for males and females; significant interaction (sex x species) was also found. The similarity in color pattern of these species, as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coleoptera; Cantharidae; Chauliognathus; Morphometry; Color polymorphism. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300007 |
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| HERMUCHE, P. M.; GUIMARÃES, R. F.; CARVALHO, A. P. F. de; MARTINS, E. de S.; DRUCK, S.; CARVALHO JÚNIOR, O. A. de; SANTOS, N. B. F. dos; REATTO, A.. |
| The present work aim to develop a methodology, using digital images processing with morphometric data to subsidize the soil mapping, in order to guide the field work becoming survey faster, better precision and cheaper. Initially the Digital Elevation Model was made (DEM), for TOPOGRID method of the ArcInfo program, using 37 topographical letters in scale 1:10.000 the Jardim river basin. From the DEM the morphometric maps of the basin had been generated (slope, flow direction and contribution area), used to elaborate the color compositions and histograms analyses in order to allow the definition of soil pattern. After that was made the comparison with the soil map elaborated by Embrapa where could be conserved great similarity of the soil units. |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Mapeamento; Solo: Classificação do solo; Morfometria; Mapping; Soil sciences.; Bacia Hidrográfica; Geomorfologia; Pedologia; Reconhecimento do Solo.; Geomorphology; Morphometry; Soil classification; Soil surveys; Watersheds.. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567988 |
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| Pineda, S.E.; Hernandez, D.R.; Brunetti, N.E.; Jerez, B.. |
| Morphological characters of two loliginid squids, Loligo gahi and Loligo sanpaulensis, in the SW Atlantic region off Argentina were studied to obtain a diagnostic criterion for their identification. Emphasis was placed on the taxonomic characters suitable to identify individuals in the whole size range. Considering the uncertainty associated to the correct identification of juveniles, their taxonomic status was confirmed using electrophoretic studies. Discrimination between species based on morphological characters proved to be more effective than meristic counts. A discriminant function that allows an easy separation of the two species is presented. The function, composed of two indices: fin width mantle length (FW/ML)and gladius width mantle length... |
| Tipo: Journal Contribution |
Palavras-chave: Meristic counts; Morphometry; Electrophoresis; Electrophoresis; Http://aims.fao.org/aos/agrovoc/c_2523. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1583 |
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| Registros recuperados: 246 | |
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