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| Registros recuperados: 1.113 | |
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| Tavares-Dias,M.; Neves,L.R.; Santos,E.F.; Dias,M.K.R.; Marinho,R.G. B.; Ono,E.A.. |
| The infestation rate in Colossoma macropomum, hybrid tambacu (C. macropomum x Piaractus mesopotamicus) and hybrid tambatinga (C. macropomum x Piaractus brachypomum) with Perulernaea gamitanae Thatcher and Paredes, 1985 from two fish farms in Amapá State, Brazil was studied. Lernaeid parasites (n=2887) were collected mainly on the tongue and the mouth cavity and also on cartilage of gill arches and filaments. Inflammation and fibrous nodules were observed on the attachment sites of the parasites. The infestation rate varied according to the fish farm and host. The prevalence of P. gamitanae was of 100% in hosts from one fish farm and was lower in the other fish farm. Higher intensity of P. gamitanae occurred in hybrids tambacu and tambatinga, but despite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fish; Amazonia; Crustacean; Infestation; Parasite. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000400026 |
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| Marinho,R.G.B.; Tavares-Dias,M.; Dias-Grigório,M.K.R.; Neves,L.R.; Yoshioka,E.T.O.; Boijink,C.L.; Takemoto,R.M.. |
| The parasitofauna in the giant Amazon basin, pirarucu (Arapaima gigas Schinz, 1822) cultured in fish farms from the state of Amapá, in eastern Amazonia (Brazil) was investigated. Of the 100 examined fish, 90.0% were parasitized by Ichthyophthirius multifiliis (Ciliophora), Dawestrema cycloancistrium, Dawestrema cycloancistrioides (Monogenoidea) and Polyacanthorhynchus macrorhynchus (Acanthocephala), which had an aggregated distribution pattern. The highest infection rates were caused by I. multifiliis and the lowest by P. macrorhynchus. Infection rates were different for each fish farm, due to different water quality and management characteristics. A negative correlation was found between the intensity of monogenoideans D. cycloancistrium and D.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Fish farm; Freshwater fish; Parasites; Sanity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400035 |
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| Santos,Marcos Pérsio Dantas. |
| This study analyzes the ornithological data available for the Brazilian state of Roraima, focusing on sampling gaps. All ornithological data collected in Roraima up to the present were collated with the aim of answering the following questions: (a) which sites have been well sampled? (b) Are there are any geographic gaps? (c) What is the current extent of the scientific knowledge of avian diversity in Roraima? (d); Which regions and vegetation types have been well-sampled, and which should be prioritized for future surveys? Ornithological data were obtained from a total of 82 localities, including the Maracá Ecological Station (442 species), Viruá National Park (420 species), Colônia do Apiaú (320 species), Mucajaí (267 species), and Pacaráima (212... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Birds; Conservation; Rio branco; Sampling gaps. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000200008 |
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| Calaça,Analice; Faria,Michel Barros; Silva,Diego Afonso; Fialho,Áquila Oliveira; Melo,Fabiano Rodrigues de. |
| Abstract: The Amazonian rainforest harbors one of the most diverse mammal faunas found anywhere in the world, although this fauna is still poorly known. Inventories are essential for the understanding of the biology and ecology of species, and provide basic data for conservation. Over 15 years of sampling in the Saracá-Taquera National Forest, we recorded 72 species of small (nonvolant), medium, and large mammals belonging to 30 families in 10 orders. These taxa included 29 species endemic to the Amazon biome, and 14 classified as threatened with extinction. Overall, the mammalian species richness recorded in the present study was equal to or greater than that recorded in other Amazonian studies, reflecting high levels of diversity on a biogeographic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trombetas; Oriximiná; Amazonia; Species richness; Environmental monitoring; Species list. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400305 |
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| Prado,Jefferson; Hirai,Regina Yoshie; Moran,Robbin Craig. |
| Abstract This paper provides keys, illustrations, short descriptions, and voucher specimen citations for the ferns and lycophytes of Acre, Brazil. We recognize a total of 212 species in 66 genera and 28 families. Of these, the lycophytes are represented by 14 species, 4 genera, and 2 families, and the ferns by 8 varieties, 1 subspecies, 198 species, 62 genera, and 26 families. The total represents an increase of 22 species and two varieties compared to a checklist published in 2009. The six most species-rich genera are Adiantum (21 spp.), Asplenium (14), Selaginella (12), Trichomanes (11), Lindsaea, and Microgramma (9 each). None of the species treated here are endemic to Acre. A new combination is made for Meniscium chrysodioides Fée var. goyazense. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Diversity; Floristics; Pteridophytes; Taxonomy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400304 |
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| Hrycyna,Gabriela; Martins,Ana Carolina Moreira; Graciolli,Gustavo. |
| Abstract: Diptera belonging to the families Nycteribiidae and Streblidae are hematophagous ectoparasites, exclusively of bats. The Amapá State is located in the North Region of Brazil. The Amapá represents one of with the lowest rates of deforestation in the country, with approximately 80% of the territory preserved. Within the State, there are conservation units, Floresta Nacional do Amapá (FNA), Parque Nacional Montanhas do Tumucumaque (PNMT) and Reserva de desenvolvimento Sustentável do Rio Iratapurú (RDSI). These areas represent priority areas for the Conservation of Amazonian Biodiversity. Recently in Amapá studied on the diversity and distribution of bats, however, there are no records of associated arthropod ectoparasites. Therefore, the objective... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hippoboscoidea; Host-parasite relationship; Amazonia; Geographic distribution. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000400201 |
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| Salm,Rodolfo. |
| This study examines aspects of the stem density and growth of two large arborescent palms Attalea maripa and Astrocaryum aculeatum and discusses their implication for the palm trees distribution in Amazonia. Stem density and growth were investigated through both laboratory measurements and field estimates of growth rates. The densities of stem samples collected within one individual of each studied species were very distinct. The samples of A. maripa stem were more homogeneous in density than those of A. aculeatum, both from the internal to the external, and from the lower to the upper parts of the stem. Field estimates of stem growth rates revealed that A. maripa growth is also more constant through development in height. Short A. aculeatum palms had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Astrocaryum aculeatum; Attalea maripa; Distribution; Palms; Stem density. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032004000100003 |
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| Catenazzi,Alessandro; Lehr,Edgar; May,Rudolf von. |
| We compile a list of all amphibians and reptiles known to occur within Manu National Park, Peru and its buffer zone, located in one of the world's biodiversity hotspots. Covering approximately 0.01% of the planet's terrestrial surface, this protected area preserves 155 species of amphibians and 132 species of reptiles, corresponding to 2.2% and 1.5% respectively of the known diversity for these groups. Moreover, Manu National Park preserves natural habitats and populations of one critically endangered (Atelopus erythropus), three endangered (Bryophryne cophites, Pristimantis cosnipatae and Psychrophrynella usurpator), three vulnerable amphibians (Atelopus tricolor, Gastrotheca excubitor, Rhinella manu) and two vulnerable reptiles (Chelonoidis denticulata,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herpetofauna; Biodiversity hotspots; Cusco Region; Madre de Dios Region; Amazonia. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400269 |
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| Cisneros-Heredia,Diego F.. |
| Ten species of Testudines, from four different families: Chelidae, Kinosternidae, Podocnemididae, and Testudinidae, are reported from the Tiputini Biodiversity Station (Universidad San Francisco de Quito), northeastern Amazonian Ecuador; including the second report from Ecuador of Batrachemys heliostemma. These ten species are sympatric but not completely syntopic, thus I comment on their diversity and habitat preferences patterns. The general distribution of some turtles from Amazonian Ecuador is discussed, providing additional records and distribution maps for Chelus fimbriatus, Platemys platycephala, Batrachemys heliostemma, Batrachemys raniceps, Mesoclemmys gibba, Phrynops geoffroanus, Kinosternon scorpioides, and Geochelone denticulata. The presence... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reptilia; Testudines; Chelidae; Kinosternidae; Podocnemididae; Testudinidae; Chelus fimbriatus; Platemys platycephala; Batrachemys heliostemma; Batrachemys raniceps; Mesoclemmys gibba; Phrynops geoffroanus; Kinosternon scorpioides; Geochelone denticulata; Podocnemis expansa; Podocnemis unifilis; Peltocephalus dumerilianus; Diversity; Habitat preferences; Distribution; Checklist; Amazonia; Ecuador. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100011 |
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| Rosas,Fernando César Weber; Rocha,Carla Soares da; Mattos,Gália Ely de; Lazzarini,Stella Maris. |
| Few giant otters (Pteronura brasiliensis) have been measured and weighed and its actual size is controversial in the literature. This study presents the weight-length relationship of Amazonian giant otters using 15 captive individuals. The maximum length and weight were 163cm and 22.5kg, and 162cm and 28.8kg, for the males and females, respectively. The weight-length relationships were not significantly different between the sexes (t = 0.658, d.f.=11, P>0.05) and can be expressed by the equation: W=1.48x10-5 L2.81. Considering that some of the giant otters used in this study were old individuals (more than 10 years old), and that all the animals analyzed were healthy, it is possible to assume that the weight-length relationships obtained are probably a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Giant otters; Pteronura brasiliensis; Biometry; Amazonia; Threatened species. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300010 |
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| Brandão,Paulo Eduardo; Cortez,Adriana; Ferreira,Fernando; Ferreira Neto,José Soares; Gregori,Fábio; Heinemann,Marcos Bryan; Homem,Valéria Stacchini Ferreira; Rodriguez,Cesar Alejandro Rosales; Jerez,José Antonio. |
| Rotavirus is a worldwide etiologic agent of diarrhea, responsible for large economic losses. We studied the seroprevalence of antibodies to group A rotavirus in cattle in 67 smallholder farms from Uruará municipality, using counterimmunoelectroosmophoresis with the NCDV strain as a standard antigen. Prevalence of positive smallholder farms was 95.6-100%. Significant differences were seen between age groups when the seropositivity rose from the youngest to the oldest groups and between females and males older than 1 year, when the seropositivity was higher in the first group. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seroepidemiologic studies; Antibodies; Rotavirus; Cattle; Amazonia. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000100003 |
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| Tavares-Neto,J.; Almeida,D.; Soares,M. C.; Uchoa,R.; Viana,S.; Darub,R.; Farias,E.; Rocha,G.; Vitvitski,L.; Paraná,R.. |
| In 1999, on the occasion of the application of the first vaccine dose during the state vaccination campaign against hepatitis B virus (HBV), 390 individuals from the town of Rio Branco, Acre, aged two or more years were selected for the determination of the seroprevalence of HBV and HCV. HBV markers (HBsAg, anti-HBs, and anti-HBc IgG) were determined on this occasion and anti-HBs antibodies were also assessed 30 days after the third vaccine dose. At the time of vaccination, 39% of the individuals were still susceptible to HBV, while 61% presented serologic evidence of previous HBV contact or previous vaccination. The individuals with previous HBV contact were significantly older (p<0.001) than those without HBV markers. Of the 192 individuals who... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hepatitis B vaccination; Amazonia; Hepatitis B; Hepatitis C; Epidemiology. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000200003 |
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| Registros recuperados: 1.113 | |
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