Upper Negro River
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Filling a gap in the distribution of Taulidesmella tabatinga (Polydesmida, Pyrgodesmidae): a new record from the upper Amazon River, Brazil
RESUMO A espécie de Diplopoda Taulidesmella tabatinga é conhecida apenas da região de fronteira entre o Brasil com Peru e Colômbia, Iquitos (Peru), e arredores de Manaus (Brasil). Com base em material coletado recentemente durante a estação chuvosa em 2014 ao longo do Rio Amazonas a montante da confluência com o Rio Negro, nós reportamos um novo regi
Acta Amazonica. Publicado em: 2022
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2. Morphological sexual maturity of the freshwater anomuran crab Aegla parana (Crustacea, Decapoda, Aeglidae) from Negro River Sub-basin, Upper Iguaçu Basin, southern Brazil
RESUMO O comprimento da carapaça (CL) no início da maturidade sexual morfológica (MSM) em Aegla paranaSchmitt, 1942foi estimado em uma população que ocorre na Sub-bacia do Rio Negro, Bacia do Alto Iguaçu, sul do Brasil. Os animais foram capturados com rede Surber e com armadilhas iscadas no Rio Negro e no seu afluente Rio Totó, em dezembro/2017, junho
Iheringia, Sér. Zool.. Publicado em: 05/08/2019
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3. Influência das características físico-químicas dos solos no ciclo hidrobiogeoquímico do mercúrio na região do Rio Aracá - AM
The region of Aracá River (Middle and Upper Rio Negro-AM) has peculiar characteristics, having soils with atypical profile and high organic matter contents in great deep. The levels of aluminum and iron in the soil samples increased as a function of depth and concentrations of mercury ranged from 0.097 to 0.964 µg g-1. Statistical analysis showed the degre
Química Nova. Publicado em: 2011
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4. Descrição de nove espécies novas de Phenacogaster (Ostariophysi: Characiformes: Characidae) e comentários sobre as demais espécies do gênero
Nine new species of Phenacogaster Eigenmann, 1907 are described: Phenacogaster capitulatus sp. nov. from the Neshuya River system, Ucayali River basin; Phenacogaster maculoblongus sp. nov. from the upper Cuyuni River, and tributaries of the lower Orinoco River; Phenacogaster napoatilis sp. nov. from the Napo River system, upper Amazon River basin; Phenacogas
Zoologia (Curitiba). Publicado em: 2010-04
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5. ESTIMATIVA DA VARIABILIDADE GENÉTICA DA REGIÃO CONTROLE DO DNA MITOCONDRIAL DE Nannostomus eques (CHARACIFORMES, LEBIASINIDAE) DA BACIA DO RIO NEGRO
The middle Negro River Basin is the most important area for ornamental fisheries in the state of Amazonas being that the city of Barcelos is the main trading post. Nannostomus eques (Lebiasinidae: Characiformes), commonly known as pencilfish, is one among the many fish species allowed to be exported as ornamental. This paper presents a study on the genetic v
Publicado em: 2009
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6. FILOGEOGRAFIA DO GÊNERO NEOTROPICAL Fluviphylax (CYPRINODONTIFORMES: POECILIIDAE) DAS BACIAS DO AMAZONAS E DO ORINOCO
A systematic and taxonomic study of the genus Fluviphylax was conducted using molecular methods, the COI gene and the control region of the mitochondrial DNA, and morphological methods. Additionally, a phylogeographic and population genetic study of Fluviphylax species was performed using the COI and control region sequence data in order to understand ecolog
Publicado em: 2008
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7. A new challenge for malaria control in Brazil: asymptomatic Plasmodium infection - a review
The evolution of malaria in Brazil, its morbidity, the malaria control programs, and the new challenges for these programs in the light of the emergence of asymptomatic infection in the Amazon region of Brazil were reviewed. At least six Brazilian research groups have demonstrated that asymptomatic infection by Plasmodium is an important impediment to malari
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-05
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8. "Projeto é como branco trabalha; as lideranças que se virem para aprender e nos ensinar": experiências dos povos indígenas do alto rio Negro
This dissertation is the outcome of two years of association with the Graduate Program in Social Anthropology of the University of Brasília, at its Masters course. It is a tentative organization of the main ideas, and pratices lived within and outside academia, conscious of the limits this genre of written finite work impose on a rich experience. I examine
Publicado em: 2006
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9. ESTUDO DA VARIABILIDADE GENÉTICA DO CARDINAL (OSTARIOPHYSI: CHARACIFORMES: Paracheirodon axelrodi) NA BACIA DO RIO NEGRO
The cardinal tetra Paracheirodon axelrodi is the most exported Amazonian characin. Since the mid-1950s, cardinal tetras have been harvested along their natural distribution in the Negro, and the upper Orinoco River drainages and their tributaries in Brazil, Colombia and Venezuela. Just the cardinal tetra constitutes over 80% of total catch all ornamental fis
Publicado em: 2006
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10. Morphobiological aspects of Rhodnius brethesi Matta, 1919 (Hemiptera:Reduviidae) from the Upper and Middle Negro River, Amazon region of Brazil: I - scanning electron microscopy
The occurrence of autochthonous cases of Chagas disease in the Amazon region of Brazil over recent decades has motivated an intensification of studies in this area. Different species of triatomines have been identified, and ten of these have be proven to be carriers of the parasite Trypanosoma cruzi or " cruzi-like " parasites. Studies conducted in the munic
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-12
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11. Trachoma among the Yanomami Indians
The Yanomami are one of the last primitive groups of Indians living in Brazil. They have almost no contact with other cultures. The epidemiology of eye disease among Yanomami is virtually unknown. For the first time, a trachoma survey was conducted among Yanomami Indians in the State of Amazonas near the Venezuelan border of the Brazilian rain forest. Ophtha
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-10