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Registros recuperados: 40
Primeira ... 12 ... Última
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Aquatic oligochaeta (Annelida: Clitellata) in extractive reserve Lake Cuniã, Western Brazilian Amazon Biota Neotropica
Gomes,Diego Ferreira; Sanches,Nathalie Aparecida Oliveira; Sahm,Lucas Henrique; Gorni,Guilherme Rossi.
Abstract Oligochaeta is one of the most common and abundant taxon in continental aquatic fauna. However, knowledge of their distribution in Brazilian ecosystems is still incomplete and fragmented. Thus, the aim of this study was to develop an inventory of aquatic oligochaetes in the Extractive Reserve of Lake Cuniã in the State of Rondônia, Brazil. Collections of data were performed during the dry (August 2015) and rainy seasons (February 2016). The sediment samples were collected near the lakeside region using the kick sampling method and a kick-net sampler (mesh size of 0.25mm). This paper provides a catalog with 12 taxon from a total of 383 specimens, distributed into two families: Naididae (95.08%) and Opistocystidae (4.92%). The Pristininae subfamily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Aquatic macroinvertebrates; Amazon region; Microdrili.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100305
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Biologia floral e fenologia reprodutiva do camu-camu (Myrciaria dubia (H.B.K.) McVaugh, Myrtaceae) no Estado Pará, Brasil Rev. Bras. Bot.
MAUÉS,MÁRCIA  M.; COUTURIER,GUY.
O camu-camu (Myrciaria dubia (H.B.K.) McVaugh, Myrtaceae) é uma fruteira nativa que ocorre nas margens de rios e lagos inundáveis da Amazônia, e está sendo domesticada visando o cultivo em terra firme. O alto teor de ácido ascórbico nos frutos, cerca de 2.800 mg.100g-1 de polpa, fortalece a demanda para consumo no país e exportação. No período de 1997 a 1998, investigou-se a biologia floral e fenologia reprodutiva do camu-camu, em plantios da Embrapa Amazônia Oriental, em Belém, e em áreas de ocorrência natural, em Santarém e Oriximiná, no Estado do Pará, norte do Brasil. Observações diretas sobre o comportamento dos visitantes foram acompanhadas da coleta de espécimens para identificação e registro fotográfico. M. dubia apresenta inflorescências com...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; Bees; Native fruit tree; Melittophily; Pollination.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002012000008
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Biomassa e conteúdo de elementos minerais nos compartimentos arbóreos de Ceiba pentandra (L.) GAERTN. Repositório Alice
NEVES, E. J. M.; REISSMANN, C. B.; DUNISCH, O..
A quantificacao da biomassa e o conteudo de macronutrientes e Al foram estudados em Ceiba pentandra. Para tanto, foram selecionadas oito arvores da especie. Qautro delas foram amostradas aos 43 e quatro aos 55 meses de idade, apos o plantio. As mesmas foram separadas nos seguintes compartimentos: tronco; casca; folhas; peciolo e galhos. A biomassa seca total produzida por Ceiba foi de 82,03 t.ha aos 43 meses e 166,65 t.ha aos 55 meses. Nas mencionadas idades, essa biomassa distribuiu-se entre os compartimentos estudados na seguinte ordem decrescente (t.ha): tronco (45,31; 98,52); casca (15.19; 30,52); galhos (14,61; 28,71); folhas + peciolo (6,92; 8,90). Nas diferentes partes da especie estudada, os maiores acumulos registrados foram para: K no tronco; Ca...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Macronutrientes; Nutricao florestal; Amazonia; Macronutrients; Forest Nutrition; Amazon region.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/289804
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Brachyuran crustaceans from the bycatch of prawn fisheries at the mouth of the Amazon river. Repositório Alice
LIMA, J. de F.; SILVA, T. C. da; SILVA, L. M. A. da; GARCIA, J. da S..
The present paper is a pioneering study on the Brachyura bycatch associated with the artisan prawn fisheries at the mouth of the Amazon River. The study was conducted at four collection sites distributed along the mouth of the Amazon River between the months of January/2009 and January/2010. The animals were caught using handcrafted traps called ?matapi?, which are used by prawn fisherman in the region. Twenty matapis were used at each collection site. A total of 145 specimens were captured and six species were identified, all belonging to the Trichodactylidae family - Sylviocarcinus maldonadoensis, S. pictus, S. devillei, Valdivia serrata, Dilocarcinus septemdentatus and D. pagei. The most representative species, S. maldonadoensis, S. pictus and S....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Prawn fishing; Crustaceans; Amazon region; Crustáceo; Camarão.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/953905
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Brachyuran crustaceans from the bycatch of prawn fisheries at the mouth of the Amazon river Acta Amazonica
Lima,Jô de Farias; Silva,Thibério Carvalho da; Silva,Luis Mauricio Abdon da; Garcia,Jamile da Silva.
The present paper is a pioneering study on the Brachyura bycatch associated with the artisan prawn fisheries at the mouth of the Amazon River. The study was conducted at four collection sites distributed along the mouth of the Amazon River between the months of January/2009 and January/2010. The animals were caught using handcrafted traps called "matapi", which are used by prawn fisherman in the region. Twenty matapis were used at each collection site. A total of 145 specimens were captured and six species were identified, all belonging to the Trichodactylidae family - Sylviocarcinus maldonadoensis, S. pictus, S. devillei, Valdivia serrata, Dilocarcinus septemdentatus and D. pagei. The most representative species, S. maldonadoensis, S. pictus and S....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Macrobrachium; Prawn fishing; Crustaceans; Amazon region; Trichodactylidae.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100011
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Ciclagem de nutrientes em uma plantacao de jacaranda-da-baia (Dalbergia nigra fr. allem.) consorciado com desmodio (Desmodium ovalifolium wall). Repositório Alice
CORREA, J.C.; CORREA, A.F.F..
Com o objetivo de estudar a ciclagem de nutrientes oito anos apos o plantio de jacaranda-da-baia (Dalbergia nigra Fr. Allem.) em consorcio com o desmodio (Desmodium ovalifolium Wall) em um Latossolo Amarelo muito argiloso, na regiao de Manaus, AM, foram coletadas amostras de solo, liteira do jacaranda e desmodio e biomassa do desmodio. Os resultados mostraram que apesar de a liteira do jacaranda com desmodio ter aumentado como o espacamento do jacaranda, as percentagens de carbono, os teores de nutrientes (exceto P e Ca) e as propriedades fisicas do solo nao deferiram significativamente entre os tratamentos. Os desmodio consorciado com o jacaranda foi beneficiado pela ciclagem do P aplicado na cova de plantio do jacaranda; entretanto, os teores de Ca no...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Solo; Amazonas; Liteira; Propriedade fisica; Plantio consorciado; Soil; Amazon region; Litter; Physical properties; Consorciated planting.
Ano: 1996 URL: http://www.alice.cnptia.embrapa.br/handle/doc/104105
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Comparing how land use change impacts soil microbial catabolic respiration in Southwestern Amazon BJM
Mazzetto,Andre Mancebo; Feigl,Brigitte Josefine; Cerri,Carlos Eduardo Pellegrino; Cerri,Carlos Clemente.
Abstract Land use changes strongly impact soil functions, particularly microbial biomass diversity and activity. We hypothesized that the catabolic respiration response of the microbial biomass would differ depending on land use and that these differences would be consistent at the landscape scale. In the present study, we analyzed the catabolic response profile of the soil microbial biomass through substrate-induced respiration in different land uses over a wide geographical range in Mato Grosso and Rondônia state (Southwest Amazon region). We analyzed the differences among native areas, pastures and crop areas and within each land use and examined only native areas (Forest, Dense Cerrado and Cerrado), pastures (Nominal, Degraded and Improved) and crop...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; Land use change; Catabolic profile; Microbial communities.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100063
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Contribution of the institutions in the Northern region of Brazil to the development of plant cultivars and their impact on agriculture. Repositório Alice
SOUZA, A. das G. C. de; SOUSA, N. R.; LOPES, R.; ATROCH, A. L.; BARCELOS, E.; CORDEIRO, E.; OLIVEIRA, M. do S. P. de; ALVES, R. M.; FARIAS NETO, J. T. de; NODA, H.; SILVA FILHO, D. F.; YUYAMA, K.; ALMEIDA, C. M. V. C. de; LOPES, M. T. G.; OHASHI, S. T..
This paper describes the development of breeding programs in northern Brazil and their main impacts on agriculture. Their contribution to the breeding of the species palm oil, acai fruit, cacao, cupuaçu, guarana, tomato, camu-camu, cocona, peach palm, and rubber was laid out in detail. Advances in breeding programs of institutions such as Embrapa, Ceplac, Inpa, and Universities require investments in infrastructure and in human and financial resources to ensure continuity and efficiency in economic, social and environmental gains. The improvement of native species, the main focus of the breeding programs of the institutions in the Northern region of Brazil, is a form of exploiting the Amazonian biodiversity for the benefit of society. Therefore, policies...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Plant breeding; Amazon region; Native species.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/946069
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CYP21 gene mutations in Brazilian patients with 21-hydroxylase deficiency from the Amazon region Genet. Mol. Biol.
Carvalho,Tarcísio André Amorim de; Souza,Izabel Cristina Neves de; Yoshioka,France Keiko Nascimento; Caldato,Milena Coelho Fernandes; Torres,Nilza Nei; Garcia,Lena Stilianidi; Guerreiro,João Farias.
Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (P450c21, CYP21) accounts for about 95% of all CAH cases. The incidence of CYP21 gene mutations has been extensively studied in the last years, but in Brazil it has been investigated only in Southeast Brazilian patients. This study is the first report on the distribution of CYP21 mutations in patients from the Amazon region. Direct sequencing of the CYP21 gene identified at least one mutation in 96% of the studied chromosomes. The most common mutations found were IVS2-13A/C > G (36%), Q318X (12%), V281L (12%), 1760_1761insT (9%), Cluster E6 (7%), and P30L (7%). The worldwide most common mutations were identified among patients from the Amazon region at frequencies that may be expected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; 21-hydroxylase deficiency; DNA sequencing.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400004
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Cytogenetics of two Farlowella species (Loricariidae: Loricariinae): implications on the taxonomic status of the species Neotropical Ichthyology
Marajó,Leandro; Viana,Patrik F.; Ferreira,Milena; Py-Daniel,Lúcia H. Rapp; Feldberg,Eliana.
ABSTRACT Farlowella is one of the most diverse genera of the Loricariinae, restricted to South America rivers. The taxonomic and phylogenetic relationships among its species are contentious and, while genetic studies would contribute to the understanding of their relationships, the only available datum refer to the karyotype description of only one species. In the present study two Amazonian species, Farlowella cf. amazonum and F. schreitmuelleri, were analyzed using conventional and molecular cytogenetic procedures. Both species had diploid chromosome number 58, but different fundamental numbers (NF) 116 and 112, respectively, indicative of chromosomal rearrangements. C-banding is almost poor, especially in F. cf. amazonum, and occurs predominantly in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; Chromosomal markers; Karyotypic characterization; Ribosomal DNA; Twig catfish.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400213
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Decapod crustaceans used as food by the Yanomami Indians of the Balawa-ú village, State of Amazonas, Brazil Acta Amazonica
Magalhães,Célio; Barbosa,Ulysses C.; Py-Daniel,Victor.
The Yanomami are a group of South American Indians that live in the rainforest along the borderlands of Brazil and Venezuela. They depend on hunting, gardening and wild food for survival; crustaceans are a highly prized food item in their diet. Taxonomical and ethnozoological aspects of the Yanomami Indians of the Balawa-ú village, state of Amazonas, Brazil, related to the crustaceans are described. Information and specimens were obtained from August to December, 2003. Interviews were conducted with residents of the village and focused on questions about species exploited, indigenous names, modes of capture and use of the species. One shrimp species of the family Palaemonidae (Macrobrachium brasiliense) and two crab species of Trichodactylidae...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ethnozoology; Yanomami Indians; Amazon region; Freshwater decapod; Indigenous name.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300013
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Diversity of yam bean ( Pachyrhizus spp. Fabaceae) based on morphoagronomic traits in the Brazilian Amazon Acta Amazonica
SILVA,Edinei Santos da; FILHO,Danilo Fernandes da SILVA; TICONA-BENAVENTE,César Augusto.
ABSTRACT Yam bean is a non-conventional horticultural crop adapted to the Amazon region. It presents edible roots, yet, its seeds contain cytotoxic components such as rotenone and pachyrhizin. The Instituto Nacional de Pesquisas da Amazonia has 64 yam bean genotypes in its germplasm bank, however, their diversity is unknown. The aim of this study was to assess the diversity of these genotypes using 10 morphoagronomic traits, plant height, number of secondary branches, shoot biomass, stem diameter, root biomass, number, length, diameter, length/diameter ratio (L/D), and shape. The accessions were planted on non-flooded land, Manaus, Amazonas (02º 59'48.2''S and 60º 01' 22.4''W) in completely randomized design with three replicates and three plants per plot...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feijão-macuco; Jacatupé; Biodiversity; Amazon region.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300233
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Estimativa da variacao do numero de flores femininas efetivas do guaranazeiro. Repositório Alice
ESCOBAR, J.R..
Descreve-se metodo indireto, para estimar a epoca, variacao e magnitude da floracao feminina efetiva do guaranazeiro (Paullinia cupana HBK var. Sorbilis Mart. Ducke). O metodo consiste na utilizacao de dados individuais de producao de sementes secas por data de colheita, peso de uma smente seca e periodo de maturacao de frutos. Com base em dados de 412 plantas, a estimativa do numero de flores efetivas, para a safra de 1982, foi de 1.200 flores por planta, para as condicoes locais. A floracao iniciou-se no comeco de julho e finalizou na primeira semana de outubro; o pico maximo ocorreu na primeira quinzena de setembro.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fenologia; Polinizacao dirigida; Regiao amazonica; Paullinia cupana; Phenology; Controlled pollination; Amazon region.
Ano: 1985 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000937
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First record of Tigrisoma fasciatum (Such, 1825) (Aves: Ardeidae) in the State of Amapá, Brazil and updated species distribution in Central and South America Biota Neotropica
Kajiki,Lia Nahomi; Togura,Cintia Massumi; Michalski,Fernanda.
The Fasciated Tiger-heron (Tigrisoma fasciatum) is considered endangered in Brazil and Argentina. Although this species has a large range in Central and South America, its records are scattered and scarce. We used a combination of searches in the scientific literature and new field records to provide an updated distributional range of this species. Searches for records and photos of T. fasciatum were conducted using online databases. We also conducted field surveys along the margins of the Araguari and Falsino rivers, in the National Forest of Amapá, a sustainable protected area in the eastern Brazilian Amazon. Our literature review provided a total of 25 new distributional records of T. fasciatum. During our river based surveys we recorded one individual...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avifauna; Amazon region; Range extension; FLONA-AP; Protected areas.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400385
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Flow seasonality and fish assemblage in a tropical river, French Guiana, South America Neotropical Ichthyology
Tejerina-Garro,Francisco Leonardo; Mérona,Bernard de.
The objective of this study is to verify the existence of a seasonal pattern of variation in the fish assemblages of a tropical river using taxonomic and functional descriptors. Fish were sampled using gillnets at two sites on the Comté River, a large-sized river 254.8 km long, flowing entirely through rainforest areas of French Guiana. Samplings were conducted every other month from August 1998 to July 2000. Four types of fish assemblage descriptors were used: the species descriptor (number of individual fish of each species in the sample); the family descriptor (number of individual fish of each family in the sample); the trophic descriptor (distribution of the fish biomass in each feeding guild) and the specific maximum observed size - MOS (number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Comté River; Amazon region; Functional descriptors.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100017
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Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil Rev. Bras. Zool.
Alves,Soraya Tatiana M.; Abrunhosa,Fernando A.; Lima,Jô de F..
The gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatus (Herbst, 1783). In general, the gastric mills of freshwater crabs showed a similar degree of complexity in relation to other marine species of Anomura and Brachyura previously described in the literature. However, significant morphological differences were observed among the analyzed species, as in ossicle numbers, features and connection types. A total of 38 ossicles were described for S. pictus and V. serrata and 37 ossicles for D. septemdentatus and F....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater crabs; Morphology; Stomach; Amazon region; Neotropic.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200011
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Genetic characterization of the population of São Luís, MA, Brazil Genet. Mol. Biol.
Ferreira,Francileide Lisboa; Leal-Mesquita,Emygdia Rosa; Santos,Sidney Emanuel Batista dos; Ribeiro-dos-Santos,Ândrea Kely Campos.
Five loci (vWA1, F13A1, D12S67, Apo-B and D1S80) were investigated by polyacrylamide gel electrophoresis followed by silver staining in a sample of 177 individuals from the population of São Luís, State of Maranhão, Brazil. A total of 70 different alleles were identified. A statistically significant deviation from the Hardy-Weinberg equilibrium was observed in a single locus (F13A1, p = 0.0075). The average heterozygosity (H) was estimated at 77.7%, the mean number of alleles per locus as 14. The PD (capacity of genotype differentiation at each locus) ranged from 88.9% (vWA1) to 96.7% (F13A1). The combined PE (power of exclusion) of these five loci was 99.8%. In terms of racial admixture (42% European, 39% Indian, and 19% African Black ancestry), São Luís...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon region; DNA; Polymorphisms; VNTRs; STRs; Interethnic admixture.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100004
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Genetic diversity among accessions of sacha inchi (Plukenetia volubilis) by phenotypic characteristics analysis Acta Amazonica
RODRIGUES,Haroldo Silva; BORÉM,Aluízio; VALENTE,Mágno Sávio Ferreira; LOPES,Maria Teresa Gomes; CRUZ,Cosme Damião; CHAVES,Francisco Célio Maia; BEZERRA,Caroline de Souza.
ABSTRACT Sacha inchi (Plukenetia volubilis) is native to the Amazon region and has a high seed content of mono and polyunsaturated fatty acids, making it interesting for the pharmaceutical and cosmetic industry. The purpose of this study was to analyze sacha inchi genetic diversity and describe accessions based on phenotypic characteristics. Fruits and seeds of 25 accessions from the sacha inchi genebank of Embrapa Amazônia Ocidental in Manaus, Amazonas state, were sampled and biometrically measured. The data were subjected to analysis of variance, Mahalanobis distance, canonical correlation, and genetic diversity among and within accessions by analysis of molecular variance (AMOVA). There were significant differences among the means of the analyzed...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Euphorbiaceae; Biometrics; Amazon region; Genetic resources.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000200093
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Intestinal parasites in two indigenous ethnic groups in northwestern Amazonia Acta Amazonica
OLIVEIRA,Raylene Andrade; GURGEL-GONÇALVES,Rodrigo; MACHADO,Eleuza Rodrigues.
ABSTRACT Approximately 90% of the population in the northwestern Amazonia is composed of indigenous people and their healthcare is still a challenge. The objective of this study was to determine the frequency of parasites in two indigenous ethnic groups (Baré and Baniwa) in northwestern Amazonia. Stool samples from 270 individuals (199 Baniwa and 71 Baré) were analyzed using Richie's method and the spontaneous sedimentation method. Statistical differences among the proportions of infected individuals based on gender, age, and ethnicity were determined. All individuals were infected by protozoans or helminths. The most frequent parasites in the indigenous people were Ascaris lumbricoides (73%), Entamoeba spp. (53%), and Giardia intestinalis (48%). Protozoan...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Indigenous Population; Parasitic Diseases; Stool samples; Amazon region.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300241
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Karyological analysis of Proechimys cuvieri and Proechimys guyannensis (Rodentia, Echimyidae) from central Amazon Genet. Mol. Biol.
Silva,Carlos Eduardo Faresin e; Eler,Eduardo Schmidt; Silva,Maria Nazareth F. da; Feldberg,Eliana.
The aim was to characterize the karyotype of rodents of the genus Proechimys from three localities in the central Brazilian Amazon, in the search for new markers that might shed light on our understanding of the taxonomy and evolutionary history of this taxon. Two karyotypes were found, viz., 2n = 28, FN = 46 in individuals from the NRSP (Cuieiras River) and REMAN (Manaus), and 2n = 46, FN = 50 in individuals from the Balbina Hydroelectric Plant. While individuals with the karyotype with 2n = 28 chromosomes were morphologically associated with Proechimys cuvieri, their karyotype shared similarities with those of the same diploid number in two other regions. Although three karyotypes are described for Proechimys cuvieri, no geographic distribution pattern...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spiny rats; C-banding; Amazon region; Karyotypes; FISH.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100012
Registros recuperados: 40
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