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| Registros recuperados: 239 | |
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| Gonçalves,Alessandra Q.; Bóia,Márcio N.; Coura,José R.; Pinto,Roberto M.. |
| Four nematodes and one cestode species from three Brazilian agoutis - two Dasyprocta fuliginosa Wagler, 1832 and one Dasyprocta leporina (Linnaeus, 1758) - and six pacas - Agouti paca (Linnaeus, 1766) - captured in tributaries rivers in the middle and high Rio Negro microregion, State of Amazonas, Brazil, were studied. The nematodes Physaloptera torresi (Travassos, 1920) Ortlepp, 1922, Physocephalus mediospiralis (Molin, 1859) Hall, 1916 and the cestode Raillietina (R.) trinitatae (Cameron & Reesal, 1951) Baer & Sandars, 1956 are reported from the State of Amazonas for the first time. The studied helminths (the nematodes P. torresi, P. mediospiralis, Trichuris gracilis (Rud., 1819) Hall, 1916, Helminthoxys urichi (Cameron & Reesal,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Cestodes; Mammals; Nematodes; Rain forest. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000300016 |
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| Hutchings,Rosa Sá Gomes. |
| The natural breeding sites of Toxorhynchites (Lynchiella) haemorrhoidalis haemorihoidalis (Fabricius, 1794), in two study areas, were sampled monthly, during a period of one year, in an upland "terra-firme" forest of the Central Amazon. These natural breeding sites, consisting of water filled palm bracts on the ground, contained invertobrates and vertebrates along with palm inflorescences, leaves and twigs. The inhabitants of the non-submersed area of the bracts include Diplopoda, Acarina, Araneae, Pseudoscorpiones, Isopoda, Blattodea, Coleoptera (Carabidae, Curculionidae, Scolytidae, Staphilinidae). Collembola, Dermaptera, Diptera (Cecidomyidae, Drosophilidae, Mycetophilidae, Tipulidae), Hemiptera, Hymenoptera and Trichoptera. The submersed areas of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxorhynchites haemorrhoidalis; Breeding sites; Behavior; Amazon. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000200009 |
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| Branquinho.,Rodrigo Gomes; Santos.,Djavan Pinheiro; Rocha dos Anjos.,João Carlos; Cassiano da Silva.,Gustavo; Mendes Brito.,Gustavo Henrique; Barcelo Carminatii.,Alechsandär Gahal. |
| Abstract Rainfall predominantly influences economic activity in northern of Mato Grosso. The scarcity of rainfall limits agricultural production, and its excess hinders the flow of production on back roads. These obstacles impose the need for greater knowledge of rainfall in distant regions of the state, such as Paranorte, in Juara-MT. This study aimed to identify the beginning and end of the rainy season, as well as the frequency and duration of dry days, besides to investigate causal relationships of rainfall with ENSO (El Niño de Oscillation Sul) phenomena. Methods based on rainfall quantity and continuity were adopted. The results showed that in Paranorte, the accumulated annual precipitation varies between 2322 and 2720 mm. The months of the year are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Mato Grosso; ENSO phenomena; Number of dry days; Temporal distribution of rainfall. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122020000300212 |
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| THATCHER,Vernon E.. |
| Studies of the cymothoid isopod Livoneca symmetricaVan Name, 1925, showed that this species has characters that preclude its inclusion in LivonecaLeach, 1818, or in any other known genus. The species is redescribed on the basis of male and female specimens from the mouth cavities of Amazonian piranhas (Serrasalmus spilopleura(Kner) and S. elongatusKner) and Vanameagen. nov. is proposed for it. The new genus is defined as having: a cephalon that is not immersed in pereonite 1; mandibles that are "foot-shaped" and without incisors, pereopods that are long and unequal in size and shape; a pleon that is not immersed in the pereon; and a pleotelson that is inflated anteriorly and medially. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isopod; Cymothoid; Parasite; Piranha; Amazon. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000300287 |
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| Salm,Rodolfo; Salles,Nilson Vicente de; Alonso,Wladimir J.; Schuck-Paim,Cynthia. |
| We investigate palm species distribution, richness and abundance along the Mokoti, a seasonally-dry river of southeastern Amazon and compare it to the patterns observed at a large scale, comprising the entire Brazilian territory. A total of 694 palms belonging to 10 species were sampled at the Mokoti River basin. Although the species showed diverse distribution patterns, we found that local palm abundance, richness and tree basal area were significantly higher from the hills to the bottomlands of the study region, revealing a positive association of these measures with moisture. The analyses at the larger spatial scale also showed a strong influence of vapor pressure (a measure of moisture content of the air, in turn modulated by temperature) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Diversity; Moisture; Palms; Tropical forests. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000100002 |
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| HARADA,Ana Yoshi; ADIS,Joachim. |
| Canopies of the locally occurring Amazonian tree species Calophyllum brasiliense. Camb. (Guttiferae, height 10 m) were fogged after dawn on the same day at five adjacent localities in a 20-year-old plantation at the Adolpho Ducke Forest Reserve near Manaus/Brazil, using natural pyrethrum (0.5%, 1.0%, 1.5%), Baythroid (0.3%) and diesel oil, respectively. The 1152 ants collected represented 52 species, 17 genera and five subfamilies. The highest number of ant species was obtained with the synthetic pyrethrum Baythroid 0.3% and with natural pyrethrum 1.5%. About 46% of the total ant species were only collected in the first hour after fogging, and 17% only during the second hour, after trees had been heavily shaken. About 73% of the total ant specimens dropped... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Canopy fogging; Pyrethrum; Forest plantation; Amazon; Neotropics. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671998000300309 |
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| BRANDÃO,Marcus Vinicius; SEBASTIÃO,Harley; KUNIY,Adriana Akemi; CAVALIERI,Soraya; GODOY,Leandro Perez. |
| ABSTRACT Monodelphis glirina is endemic to the Amazon and its life habits and natural history are poorly known. Data on the species were collected in northern Mato Grosso, Brazil, including observations on its behavior and simpatry with congeners. During 10 expeditions and with an effort of 3,680 buckets-day, 29 M. glirina, three M. saci and one M. emiliae individuals were captured. Adults accounted for 82.8% of M. glirina captures, with a sex ratio of three males for each female. Capture of young and lactating females was seasonal, as both were captured only in the rainy season. We observed three events of M. glirina preying on rodents in pitfall traps, all with the same feeding behavior. We also report an individual climbing a tree at night, including a... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Amazon; Biology; Mato Grosso; Amazonian red-sided opossum; Monodelphis saci; Monodelphis emiliae. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400309 |
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| 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 |
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| FROIDEVAUX,Jérémy S.P.; ROEMER,Charlotte; LEMARCHAND,Clément; MARTÍ-CARRERAS,Joan; MAES,Piet; RUFRAY,Vincent; URIOT,Quentin; URIOT,Sylvain; LÓPEZ-BAUCELLS,Adrià. |
| ABSTRACT The Amazonian basin harbours some of the most bat-diverse ecosystems worldwide. Yet, information on elusive, high-flying bat species such as Molossidae is scarce or virtually missing in the literature, which hampers conservation efforts both locally and globally. The recent advent of new technologies specifically designed to survey bats, such as passive ultrasound detectors and acoustic lures, has significantly increased understanding of bat ecology and distribution, and has allowed researchers to gather new and valuable information which was impossible to collect in the past. We undertook a rapid bat diversity assessment in French Guiana using acoustic lures to aid in capturing high-flying insectivorous bat species. Here we report the second and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Bats; Bioacoustics; Molossidae; Mitochondrial sequences. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400327 |
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| PEREIRA,Adriany Duarte; PINTO,Pedro Luiz Silva; CAMARGO,Juliana de Souza Almeida Aranha; SOUZA,Juliana Bianca Rocha de; AMANTE,Carlos Antônio; SOUZA,Viviane Krominski Graça de; SIMONE,Luiz Ricardo Lopes de; CAMARGO,Luís Marcelo Aranha. |
| ABSTRACT Schistossomiasis is a parasitic disease, caused by helminths of the genus Schistosoma and transmitted in Brazil by snails of the genus Biomphalaria. The municipality of Ouro Preto do Oeste, Rondônia, in the Brazilian Amazon Region, has unusually registered more than 900 cases of schistosomiasis in the last 10 years. The aim of this study was to investigate de potential of transmission of schsitosomiasis in Ouro Preto do Oeste. A total of 1,196 people in a risk area for the disease transmission were requested to answer a clinical-epidemiological survey and to collect feces samples for examination. All the samples that underwent examination resulted negative for S. mansoni. Two hundred and sixty-eight snails were collected in the locality of Ouro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Schistosomiasis; Amazon; Transmission. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400377 |
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| HELENBROOK,William. D.; WILKINSON,Madison L.; SUAREZ,Jessica A.. |
| ABSTRACT The black-headed night monkey, Aotus nigriceps, has one of the largest distribution ranges of the 11 night monkey species found across Central and South America. Yet, only three studies have focused on their ecology, describing considerable variation in habitat, group composition, and population density. Therefore, we analyzed habitat use, group composition, population density, and diet of 14 groups at two field sites in southeastern Peru. All sampled groups were found in secondary tropical rainforest, often dominated by native bamboo species. Half of the observed sleeping sites were in bamboo stands, though groups also emerged from cane thickets and lianas. This contrasts with other Aotus studies which have found groups living in tree cavities... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Primates; Aotidae; Conservation; Owl monkey; Nocturnal; Habitat. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100037 |
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| Salm,Rodolfo. |
| This study investigates patterns of forest structure and tree species diversity in an anthropogenic palm grove and undisturbed areas at the seasonally-dry Pinkaití research station, in the Kayapó Indigenous Area. This site, managed by the Conservation International do Brasil, is the most southeastern site floristically surveyed in the Amazon until now. The secondary and a nearby undisturbed forest were sampled in a group of 52 floristic plots of 0.0625-ha (25x25-m) where all trees with DBH > 10 cm were measured and identified. The analyses were complemented with other two floristic plots of 1-ha (10x1000-m). The present study has shown that the Pinkaití, like other seasonally-dry forests, have great heterogeneity in forest structure and composition,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Anthropogenic forest; Arborescent palms; Floristics; Tropical forests. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000300009 |
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| FERNANDES,Kamila Rangel Primo; BITTERCOURT,Paulo Senna; SOUZA,Afonso Duarte Leão de; SOUZA,Antonia Queiroz Lima de; SILVA,Felipe Moura Araújo da; LIMA,Emerson Silva; ACHO,Leonard Domingo Rosales; NUNOMURA,Rita de Cássia Saraiva; TEIXEIRA,Ana Frazão; KOOLEN,Hector Henrique Ferreira. |
| ABSTRACT Virola venosa, popularly known in Brazil as ucuuba-da-mata, occurs naturally in the Amazon region and has potential to provide useful natural compounds, as already known for other Virola species. Therefore, the objective of this study was to determine the chemical composition of bark and leaf extracts of V. venosa, and to test the antioxidant capacity and α-glucosidase inhibition potential of their compounds. Polar extracts showed to be more active in both assays, therefore a bioactivity-guided fractionation was performed to identify the compounds that were responsible for the recorded activities. Using a combination of LC-MS/MS analysis and isolation with NMR identification, eight phenolic compounds were identified. Assays with pure compounds of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Α-glucosidase inhibition; Antioxidant compounds; Ferulic acid; Amazon. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100048 |
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| Calzada,Javier; Delibes,Miguel; Keller,Claudia; Palomares,Francisco; Magnusson,William. |
| A new record of a very rarely observed mammal, the bushy-tailed opossum, Glironia venusta (Didelphimorphia), was obtained for the Adolpho Ducke Forest Reserve, Manaus, Amazonas state, Brazil. Only 17 other records existed of this species, most from the 1980s. There were only three previous records of the species from Brazil (in the states of Pará, Amazonas and Rondônia). This new record supports the notion that G. venusta is a locally rare species throughout its range, but widely distributed in Brazilian Amazonia. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Bushy-tailed opossum; Didelphidae; Didelphimorphia; Glironia venusta. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400027 |
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| Registros recuperados: 239 | |
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