|
|
|
| Registros recuperados: 239 | |
|
|
| Lima-Gomes,Renata C.; Lima,Jô de Farias; Magalhães,Célio. |
| ABSTRACT The morphology of stomach ossicles of decapod crustaceans provides valuable information on their phylogeny and biology. We herein described ten new ossicles in the foreguts of two trichodactylid crabs, Sylviocarcinus pictus (H. Milne-Edwards, 1853) and Valdivia serrata White, 1847, in addition to previously described 38 ossicles, which are also recognized and listed. Five specimens each of S. pictus and V. serrata were selected for morphological analysis of gastric ossicles. The stomachs were obtained after removing the carapace, and they were fixed in 10% formalin for 24 hours. After this procedure, the stomachs were immersed in a solution of 10% Potassium Hydroxide (KOH) and heated to 100 °C during 60 minutes for tissue maceration. At this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Anatomy; Foregut; Morphology; Neotropical; Stomach; Valdiviini. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100312 |
| |
|
| |
|
| |
|
|
| TORRES,Maycon de Paula Ribeiro; ESPRENDOR,Rhuan Vínicius de Freitas; BONALDO,Solange Maria; RIBEIRO,Elton Brito; VALLADÃO,Dênia Mendes de Sousa. |
| ABSTRACT Advances in nanotechnology, combined with the use of natural products, represent a promissing research field. Brazil is a country of a rich biodiversity, especially in the Amazon forest. Fruits commonly used by local communities, such as bacaba (Oenocarpus bacaba), are potentially important for prospection of industrial applications of natural products. In nanotechnology, microemulsions stand out for providing a modified release to conveyed substances. This work aimed to develop microemulsionated formulations of bacaba oil, characterize them and evaluate their stability. We determined the HLB (hydrophile-lipophilic balance) of bacaba oil for formulation development. Six formulations were selected from pseudoternary diagrams, which indicated the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microemulsion; Amazon; Native fruit; Nanotechnology; Carriers. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000300246 |
| |
|
|
| Pessoa,José Dalton Cruz; Leeuwen,Johannes Van. |
| The kernel of the cutia nut (castanha-de-cutia, Couepia edulis (Prance) Prance) of the western Amazon, which is consumed by the local population, has traditionally been extracted from the nut with a machete, a dangerous procedure that only produces kernels cut in half. A shelling off machine prototype, which produces whole kernels without serious risks to its operator, is described and tested. The machine makes a circular cut in the central part of the fruit shell, perpendicular to its main axis. Three ways of conditioning the fruits before cutting were compared: (1) control; (2) oven drying immediately prior to cutting; (3) oven drying, followed by a 24-hour interval before cutting. The time needed to extract and separate the kernel from the endocarp and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Instrumentation; Nut; Kernel; Shelling; Extraction method; Amazon. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452006000200018 |
| |
|
|
| Dary,Eurizângela P.; Ferreira,Efrem; Zuanon,Jansen; Röpke,Cristhiana P.. |
| ABSTRACT This study was carried out in a section of the middle course of the Teles Pires River, a clear water river that drains ancient and highly eroded geological formations, and where five hydropower plants are planned or in construction. In this study we tested the hypothesis that local fish fauna is mainly sustained by autochthonous food resources, with modest changes in the trophic structure of fish assemblages along the hydrometric cycle. Sampling was performed every three months between July 2008 and May 2009 at seven sites distributed along a 50-km section of the river. Piscivores was the most representative group in terms of biomass, abundance and species richness, followed by herbivores, insectivores and omnivores. The trophic structure did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Environmental impact; Food resources; Temporal dynamics; Trophic ecology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000400201 |
| |
|
|
| Silva,Cylene C. da; Ferreira,Efrem J. G.; Deus,Cláudia P. de. |
| The study of fish diet and its interaction with the environment provides important data on ecology and behavior, as fish face varying environmental and food availability conditions. The aim of the present study was to determine the diet of Bryconops caudomaculatus and Bryconops alburnoides, as well as to assess its seasonal variation, within the area influenced by Balbina Hydroelectric Dam (BHD), in the Uatumã River (Amazon Basin, Brazil). Collections were carried out every two months from April 2005 to February 2007, using gill nets with mesh sizes ranging from 12 to 60 mm between opposite knots. Two methods were used for determining diet: frequency of occurrence and relative volume, which were used to calculate the alimentary index (IAi). Diet similarity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding ecology; Reservoir; Amazon; Environmental impact. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200011 |
| |
|
|
| Nemésio,André; Silveira,Fernando A.. |
| The aim of this study was to investigate the diversity and distribution patterns of orchid bees (Euglossina). Cluster and correlation analyses were applied to data extracted from 28 orchid-bee surveys throughout the Neotropical Region. The 28 sampling sites were grouped in three main biogeographic areas that roughly correspond to the Amazonian Basin, the Atlantic Forest and Central America. These three regions, as well as subregions within each of them, correspond approximately to biogeographic components identified through phylogeny-based analyses for other bees and organisms. The Amazonian Forest as a whole has the richest fauna and the highest levels of endemism. The Atlantic Forest, on the other hand, showed the poorest fauna and the lowest levels of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Atlantic forest; Conservation; Neotropics; Taxonomy. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000600008 |
| |
|
|
| TAVARES-DIAS,MARCOS; NEVES,LIGIA R.. |
| ABSTRACT The community composition of parasites was characterized in Astronotus ocellatus from a tributary of the Amazon River, northern Brazil. The prevalence was 87.9%, and a total of 526,052 parasites were collected, with a mean of 15,941 parasites per host. Nine taxa of ecto- and endo-parasites were identified, but Ichthyophthirius multifiliis was the dominant species, while Piscinoodinium pillulare, Clinostomum marginatum and Argulus multicolor were the least prevalent parasites. The parasite community was characterized by a low species richness, low diversity and low evenness. Host body size was not found to influence the composition of the parasite community, and there was no significant correlation between abundance of any parasite species and host... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggregation; Amazon; Ectoparasites; Endoparasites; Freshwater fish. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502305 |
| |
|
|
| Feitosa,Marlisson Augusto Costa; Julião,Genimar Rebouças; Costa,Manoel Djalma Pereira; Belém,Braulio; Pessoa,Felipe Arley Costa. |
| This paper aimed to evaluate the richness, abundance and frequency of sand fly occurrence in rural and urban areas American visceral Leishmaniasis -AVL is endemic in the study area of Santarém municipality, Pará state. Sand flies were collected during 1995-2000, using CDC light traps placed in neighborhoods and rural areas of the municipality. A total of 53.454 individuals and 26 species of sand flies were collected. The most abundant species in both urban and rural environments was Lutzomyia longipalpis, vector of AVL in the area. The highest species richness by capture was in rural area. In all years sampled, the largest number of species of sand fly collected was always in rural areas. The species of sand flies in urban and rural area were similar in 11... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leishmaniasis; Anthropic impact; Amazon. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000400008 |
| |
|
| |
|
|
| Santa-Brígida,Rosângela; Schmitz,Hermes José; Martins,Marlúcia Bonifácio. |
| Abstract This list contains information on the Drosophilidae that occur in the Brazilian state of Pará, Amazon biome, and an analysis of the current knowledge of Drosophilidae based on museum material and literature records. This list includes a detailed account of the material deposited in the entomological collections of the Museu Paraense Emílio Goeldi and Museu de Zoologia da Universidade de São Paulo, up to 2015. In total, 122 species of Drosophilidae were registered, including 27 new records for the state of Pará and 22 are new records for the Amazon; for instance, the genera Diathoneura and Rhinoleucophenga, and three new records for Brazil, (Drosophila fasciola, Diathoneura flavolineata and Drosophila neochracea). The state of Pará is the third... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Species composition; Amazon; Diathoneura; Rhinoleucophenga. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100204 |
| |
|
|
| Pacheco,Thaynara L.; Vaz-de-Mello,Fernando Z.. |
| Phanaeini comprises about 160 species in 12 genera restricted to the Americas. Since the diversity of this tribe remains little known in several regions of Brazil, this study presents a guide to its 13 species with presence in the biologically rich and largely unexplored state of Roraima: Coprophanaeus (Coprophanaeus) abas (MacLeay, 1819), C. (C.) dardanus (MacLeay, 1819), C. (C.) gameziArnaud, 2002, C. (C.) jasius (Olivier, 1789), C. (Megaphanaeus) lancifer (Linnaeus, 1767), Oxysternon (Oxysternon) conspicillatum conspicillatum Werber, 1801, O. (O.) durantoniArnaud, 1984, O. (O.) ebeninum (Nevinson, 1890), O. (O.) festivum viridanum (Olsoufieff, 1924), O. (O.) silenus chicheryiArnaud, 2001, Phanaeus (Notiophanaeus) bispinusBates, 1868, P. (N.)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inventory; Amazon; Guyana Shield. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200110 |
| |
|
|
| Vitorino Júnior,Oscar B.; Agostinho,Carlos S.; Pelicice,Fernando M.. |
| ABSTRACT Mylesinus paucisquamatus is a threatened fish endemic to the rio Tocantins basin, with little information about its natural history. Using monitoring data obtained between 1998 and 2009, we investigated the spatial distribution, feeding and reproduction of this species in a long stretch of the middle-upper rio Tocantins. Eighty-one individuals were captured over a decade of intensive sampling. In addition, we recorded the species in only 13 out of 35 sites, particularly in the Tocantins and Paranã rivers. Most individuals were captured alone, while the remaining formed small groups. These results indicate that this fish is rheophilic and rare. We recorded seasonal variation in fish abundance, with higher values during the dry season, indicating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Conservation; Rare species; Rheophilic; River regulation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200204 |
| |
|
| |
|
|
| Ramos,D.G.S.; Santos,A.R.G.L.O.; Freitas,L.C.; Correa,S.H.R.; Kempe,G.V.; Morgado,T.O.; Aguiar,D.M.; Wolf,R.W.; Rossi,R.V.; Sinkoc,A.L.; Pacheco,R.C.. |
| ABSTRACT The population of wild animals is regulated by many biotic and abiotic factors, and parasites are a biotic factor that affects the dynamic and density of host populations. From 2002 to 2014, 62 wild animals from the biomes Pantanal, Amazon, and "Cerrado" (or Savanna), which died in attendance in the veterinary hospital or have been road-killed, underwent necropsy for parasitological examination. Overall, 36 species of parasites were identified from 24 host species. Among the parasites, the most prevalent order was Oxyurida (29.1%), followed by Strongylida (20.9%), Spirurida (19.4%), Ascaridida (16.2%), Pentastomida (3.2%), Echinostomida (3.2%), Gygantorhynchia (3.2%), Rhabditida (1.6%), Plagiorchiida (1.6%), and Monilimorfida (1.6%), especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helminths; Parasitism; Amazon; Cerrado; Pantanal. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300571 |
| |
|
| |
|
|
| Santos, Ricardo Bruno Nascimento dos; Diniz, Marcelo Bentes; Diniz, Marcia Juca Teixeira; Rivero, Sergio Luiz De Medeiros; Oliveira Junior, Jose Nilo de. |
| O presente trabalho investigou a hipótese da Curva Ambiental de Kuznets – CAK, diante da controvérsia que existe na atual literatura entre o crescimento econômico e impactos ambientais. A principal contribuição do artigo é apresentar um estudo de caso voltado para uma das regiões mais importantes no debate ambiental que é a Amazônia Legal. A questão em si, que não está determinada teoricamente, e apresenta diversos resultados empíricos contraditórios, incorpora a idéia de verificar se o crescimento econômico gera algum tipo de proteção automática ao meio ambiente, e até ao desenvolvimento sustentável. Com isso, o presente trabalho procura contribuir para esse debate, trazendo evidências empíricas inéditas a âmbito regional. Utilizando como variável... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Meio Ambiente; Hipótese de Kuznets; Amazônia; Crescimento Econômico; Environment; Kuznets Hypothesis; Amazon; Economic Growth; Environmental Economics and Policy; International Development. |
| Ano: 2008 |
URL: http://purl.umn.edu/113968 |
| |
|
|
| Peres, Carlos A.; School of Environmental Sciences, University of East Anglia, Norwich, UK; C.Peres@uea.ac.uk. |
| Monitoring the distribution and abundance of hunted wildlife is critical to achieving sustainable resource use, yet adequate data are sparse for most tropical regions. Conventional methods for monitoring hunted forest-vertebrate species require intensive in situ survey effort, which severely constrains spatial and temporal replication. Integrating local ecological knowledge (LEK) into monitoring and management is appealing because it can be cost-effective, enhance community participation, and provide novel insights into sustainable resource use. We develop a technique to monitor population depletion of hunted forest wildlife in the Brazilian Amazon, based on the local ecological knowledge of rural hunters. We performed rapid interview surveys to estimate... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Amazon; Brazil; Game; Harvesting; Hunting; Interviews; Large mammals. |
| Ano: 2015 |
|
| |
|
| |
| Registros recuperados: 239 | |
|
|
|
