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| Registros recuperados: 19 | |
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| Mise,Fabio Teruo; Tencatt,Luiz Fernando Caserta; Souza,Fagner de. |
| Morphological and genetic evidences suggest that Rhamdia branneri and Rhamdia voulezi, currently considered synonymous of Rhamdia quelen, are in fact two valid species. Furthermore, in the taxonomic revision of R. quelen, no exemplars from the Iguaçu River were examined, which makes the synonymy doubtful. Considering the two species as valid, it was hypothesized that R. branneri and R. voulezi have ecomorphological differences, with the objective to verify if they can be considered ecologically distinct. Ecomorphological characterization was conducted using ecomorphological indices. For statistical analysis, a Principal Component Analysis (PCA), a Multiresponse Permutation Procedure (MRPP), and a Discriminant Analysis (DA) were performed. The ordination... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endemism; Heptapteridae; Rhamdia voulezi; Rhamdia branneri; Rhamdia quelen; Ecomorphology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400099 |
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| Cunico,Almir Manoel; Agostinho,Angelo Antonio. |
| The aim of this study was to determine morphological patterns of the most abundant fish species found in reservoirs with different hydraulic retention times and stages of colonization, considering habitat strata and feeding strategies. Samplings were carried out in six Paraná State (Brazil) reservoirs, and morphological data were obtained from 15 individuals of 17 fish species. Ecomorphological attributes that best segregated species, were selected using Discriminant Analysis. These selected attributes were later used in a Principal Components Analysis (PCA). Differences among reservoirs concerning occupation of the ecomorphological space were tested through analysis of variance (null models). The six reservoirs differed in the occupation of the fish... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecomorphology; Feeding strategies; Habitat; Reservoir. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100015 |
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| Reecht, Yves; Rochet, Marie-joelle; Trenkel, Verena; Jennings, S.; Pinnegar, J. K.. |
| An ecomorphological method was developed, with a focus on predation functions, to define functional groups in the Celtic Sea fish community. Eleven functional traits, measured for 930 individuals from 33 species, led to 11 functional groups. Membership of functional groups was linked to body size and taxonomy. For seven species, there were ontogenetic changes in group membership. When diet composition, expressed as the proportions of different prey types recorded in stomachs, was compared among functional groups, morphology-based predictions accounted for 28-56% of the interindividual variance in prey type. This was larger than the 12-24% of variance that could be explained solely on the basis of body size. (C) 2013 The Fisheries Society of the British Isles |
| Tipo: Text |
Palavras-chave: Ecomorphology; Functional traits; Predation strategy; Trophic functions. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00152/26294/24831.pdf |
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| Aveiro-Lins,Gustavo; Rocha-Barbosa,Oscar; Salomão,Maria da Graça; Puorto,Giuseppe; de Castro Loguercio,Mariana Fiuza. |
| Imantodes cenchoa (Duméril, 1853) is an arboreal, nocturnal and oviparous xenodontine snake, which feeds on amphibians and lizards. It is found in Central and South America, including northern and central Brazil. In this work, we investigated the relationship between topographic anatomy and habitat in I. cenchoa. Twenty specimens (13 non pregnant females and 7 males) were examined. The topographic anatomy study was realized through observations of the internal anatomy, particularly the position and size of lung, heart, liver, left and right gonads and left and right kidneys. Results showed that all the organs are located in a posterior position in relation to the snout vent length (SVL). The centre of gravity is found at about 74% of SVL in both males and... |
| Tipo: Journal article |
Palavras-chave: Snakes; Ecomorphology; Anatomy; Allometry; Arboreality. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100009 |
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| Gadelha-Alves,Rafaela; Rozensztranch,Andréa Melo Da Silva; Rocha- Barbosa,Oscar. |
| The intestines of Sturnira lilium, Phyllostomus hastatus, Carolliaperspicillata, GlossophagasoricinaíindDesmodus rotundus were analized through macroscopic, morphometric and light microscopy studies. The species studied presented some common charactenstics generally found in bats, such as the absence of a caecum and an appendix. The frugivorous bat S. lilium has a longer intestine than the other species. The intestinal epithelium is of the simple columnar type, constituted of absorptive cells characterized by microvilli and goblet cells, which in all the species proved to be PAS + and AB +. These cells presented some differences in quantity and in distribution among the species. The intestinal mucosa presented morphologic and morphometric differences, such... |
| Tipo: Journal article |
Palavras-chave: Intestines; Bats; Phyllostomidae; Histology; Histochemistry; Micrometry; Ecomorphology. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000300014 |
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| Oliveira,Edson Fontes; Goulart,Erivelto; Breda,Luciani; Minte-Vera,Carolina Viviana; Paiva,Luiz Ricardo de Souza; Vismara,Melina Rizzato. |
| Ecomorphological patterns of the fish assemblage from the upper Paraná River floodplain, Brazil, were described and evaluated according to trophic (guilds), spatial (habitats) and phylogenetic (taxonomic distances) structures. The samples were obtained through the Long Term Research Project (LTER-CNPq/UEM/NUPELIA) in August and October 2001. Thirty-five species were analyzed from thirty-one morphological variables. Strong significant correlations (Mantel test) between morphology and trophic guilds and between morphology and taxonomy were found, while morphology and habitat revealed a weak correlation. However, the partial Mantel test showed that the correlations between morphology and trophic guilds persist even when the effect of taxonomy is discounted.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecomorphology; Ecomorphotypes; Trophic guilds; Habitat diversity; Phylogeny; Upper Paraná River. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300002 |
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| Zeni,Jaquelini O.; Sensato-Azevedo,Luisa Martins; Santos,Eduardo Fernando dos; Brejão,Gabriel Lourenço; Casatti,Lilian. |
| Abstract Fish ecomorphology and diet can help us to understand species response to impacts and coexistence patterns. Thus, we developed a comparative analysis of ecomorphology and diet of Inpaichthys kerri and Hyphessobrycon vilmae and tested for environmental variables that explain their abundance in headwater streams. We sampled streams from the Aripuanã River basin, Mato Grosso State, Brazil. We sampled environmental variables following a standardized protocol and used 30 and 80 individuals from each species to obtain ecomorphological attributes and feeding index, respectively. To identify environmental variables that influence species abundance, we developed generalized additive mixed models. Inpaichthys kerri presented broader and deeper caudal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deforestation; Diet; Ecomorphology; Marginal grasses; Species coexistence. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300208 |
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| Kokubun,Érika Endo; Bonato,Karine Orlandi; Burress,Edward D.; Fialho,Clarice Bernhardt. |
| ABSTRACT Alterations in natural landscapes, mainly caused by anthropic pressures, have been threatening the world’s biomes, including aquatic environments and its biota. This study describes the diet of Bryconamericus iheringii, and how its body shape relates to environmental variables in populations of 22 streams. A wide array of food items were found, mainly composed of allochthonous plants (50.5%) and autochthonous invertebrates (25.2%). Even though food items remained almost the same, the predominant food group significantly differed among streams, mainly in relation to environmental characteristics. There was variation in body shape primarily associated with body depth and length of the pre-dorsal region; however, these differences did not correspond... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecomorphology; Generalist diet; Grassland ecosystem; Stream. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400202 |
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| Gibran,Fernando Zaniolo. |
| Based on a fish survey and preliminary underwater observations, 17 "morphotypes" were identified that characterize the morphological diversity found within 27 nektonic fish species sampled at São Sebastião Channel. Such "morphotypes" were studied using an ecomorphological approach, with the intention to investigate similarities and differences in shape and habits. Underwater field observations were also performed, to verify if the lifestyle of these species, such as vertical occupation of the water column and the habitat use, are in accordance with their distribution in the morphospace. The results, complemented with data from scientific literature on the taxonomy and phylogenies of these species, allowed discussing some of the typical cases of convergent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body form; Fins shape; Fins position; Pelagic fishes; Ecomorphology. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000200008 |
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| Carvalho Ribas,Sueli; Velloso,Ana Lucia Rosario; Teixeira-Filho,Pedro; Rocha-Barbosa,Oscar; Evangelista,Heitor; Alves dos Santos,Elaine. |
| Tropidurus torquatus and Liolaemus lutzae, found in a restinga habitat, show some morphological differences associated with differential microhabitats use. There were made measurements of the snout-vent length, length and width of the largest toe of hand and foot, and length, width, height and curvature of the claws. We counted the number of adhesive lamellae of the largest toe of each member. T. torquatus has larger toes, greater number of adhesive lamellae and higher and more curve claws than L. lutzae. No significant differences in toe and claw widths were found. These results suggest that the differences found in the morphology of toes and claws of these two species would be associated with the differential microhabitat use. T. torquatus has... |
| Tipo: Journal article |
Palavras-chave: Tropiduridae; Ecomorphology; Lizard; Claw; Microhabitat use. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400003 |
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| Shibatta,Oscar A.; Cheida,Carolina C.. |
| The standard length of 7610 specimens of 43 species from eight streams of rio Tibagi basin was obtained in order to analyze the means of fish sizes. The higher mean size was observed in Gymnotus carapo Linnaeus, 1758 (165,5 mm) and the smaller, in Phalloceros caudimaculatus (Hensel, 1868) (16,25 mm). Some fish like Acestrorhynchus lacustris (Reinhardt, 1874), Leporinus obtusidens (Valenciennes, 1836), Gymnotus carapo Linneus, 1758 and Synbranchus marmoratus Bloch, 1795 can reach big or medium size when adults but were collected only young, evidencing they use some streams in beginning of life. The mean size of total species was 49,81mm, what shows the small size composition of fishes in the streams. The Kolmogov-Smirnov test comparing the mean size of all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body size; Conservation; Ecomorphology; Streams. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000300016 |
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| Registros recuperados: 19 | |
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