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| Arcila,Dahiana; Petry,Paulo; Ortí,Guillermo. |
| ABSTRACT Characiformes is an order of freshwater fishes that includes many commercially important and emblematic species from South America and Africa, such as the popular piranhas, hatchetfishes, African tiger fishes and tetras. The order is split into two suborders with a total of 24 families, 282 genera and ca. 2,100 species. Here, we present an expanded phylogeny of characiform fishes, including data for 520 species and three genes (12S, 16S and RAG1), and the recently described family Tarumaniidae, which has not been examined by previous molecular analysis. Although our genetic coverage is limited to three gene fragments, the tree inferred based on maximum likelihood and Bayesian inference supports the monophyly of all characiform families and is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Central Amazon; Erythrinoidea; Freshwater fishes; Ostariophysi; Tarumania. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000300301 |
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| Garcia,Cira Hortensia Pérez; Lima,Hedinaldo Narciso; Silva,Francisco Weliton Rocha; Neves Junior,Afrânio Ferreira; Teixeira,Wenceslau Geraldes; Macedo,Rodrigo Santana; Tavares,Sérgio Guimarães. |
| Large areas of Plinthosols with ferruginous materials such as plinthite and/or petroplinthite are fairly common in the Brazilian Amazon basin. This work was carried out to investigate the chemical behavior, mineralogical composition and weathering stage of four representative soil profiles with plinthite and petroplinthite, in Iranduba, AM (Central Amazon). Three well-drained soil profiles at high elevations were studied (P1, Plinthic Vetic Ferralsol; P2 and P3, Vetic Endopetric Plinthosol) and a contrasting poorly drained soil (P4 Haplic Plinthosol), located at low elevation. After profile descriptions, soil samples were collected from each horizon, air-dried, sieved (2 mm), and analyzed for particle-size distribution, pH, exchangeable cations (Al3+,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plinthosol; Soil fertility; XRD; Weathering degree; Central Amazon. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400011 |
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| Carvalho,Karine S.; Vasconcelos,Heraldo L.. |
| Community of ants that nest in dead twigs on the ground of Central Amazonian forest, Brazil. A total area of 2,880 m² in four forest sites, near Manaus, Brazil, was searched for ant colonies nesting in dead twigs on the ground. An amount of 3,706 twigs (0.5-5 cm in diameter) were gathered, of which only 623 (16.8%) had ants, which is equivalent to a density of 0.22 nests per m². Seventy species have been found. The predominant genera were Pheidole (Westwood), Crematogaster (Lund), and Solenopsis (Westwood). For most species, many of the nests found had only workers and brood, suggesting that colonies either use multiple twigs to nest or do not live exclusively in the twigs, using other types of substrate (e.g., leaf-litter, soil, fruit pods) to nest. Most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Central Amazon; Formicidae; Litter invertebrates; Tropics. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000200002 |
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| Andrade-Porto,Sanny Maria de; Souza,Kelly Cristina Pereira de; Cárdenas,Melissa Querido; Roque,Rosemary A.; Pimpão,Daniel Mansur; Araújo,Cleusa Suzana; Malta,José Celso de Oliveira. |
| Achatina fulica or "giant African snail" is an exotic species, considered to be one of the world's hundred most invasive species, causing serious environmental damages. In the present study we report, for the first time, the occurrence of Aelurostrongylus abstrusus infecting A.fulica in the Amazon region. This nematode is described parasitizing mainly the pulmonary system of felines, which causes "aelurostrongilose", also known as feline cardio-pulmonary strongyloidosis. New morphometric data of third stage larvae are presented herein. The present study demonstrated that 40% of all the snails were infected by A. abstrusus. Achatina fulica specimens were collected from three different areas in Manaus namely: rural; east and west areas. The east area... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Giant african snail; Parasitology; Nematode larvae; Helminth; Central Amazon. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000200010 |
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