Neotropical Tree Species
Mostrando 13-24 de 38 artigos, teses e dissertações.
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13. Guazuma ulmifolia (Sterculiaceae), a new natural host of 16SrXV phytoplasma in Costa Rica
Guacimo trees (Guazuma ulmifolia, Sterculiaceae) showing witches' broom symptoms (GWB), small leaves, short internodes, stunting and no flower and fruit production were observed on side roads and fences in different areas of Costa Rica. The occurrence of phytoplasma infection in GWB trees was evaluated by transmission electron microscopy (TEM), and by molecu
Tropical Plant Pathology. Publicado em: 2011-04
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14. Pollen Analysis Reveals Plants Foraged by Africanized Honeybees in the Southern Pantanal, Brazil
The pollen diet of Africanized honeybees Apis mellifera L. was studied during seven months (October 2006 to April 2007) in a natural forest fragment in the southern Pantanal, sub-region of Abobral, Mato Grosso do Sul. The analysis of the pollen diet was based on direct observations of the bees visiting flowers as well as through the use of a pollen trap inst
Neotropical Entomology. Publicado em: 2011-02
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15. Sobrevivência, morfo-anatomia, crescimento e assimilação de carbono de seis espécies arbóreas neotropicais submetidas à saturação hídrica do solo / Survival, morpho-anatomy, growth and carbon assimilation of six neotropical tree species submitted to flooding
Alchornea triplinervia, Nectandra oppositifolia, Eugenia umbelliflora, Gomidesia schaueriana, Guapira opposita and Guatteria gomeziana are typical tree species of swampy areas of Restinga Forest in Southeastern Brazil. To elucidate effects of seasonal flooding on survival, morpho-anatomy, growth and carbon assimilation rate in these species, were evaluated g
Publicado em: 2011
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16. Development of microsatellite markers for the endangered neotropical tree species Tibouchina papyrus (Melastomataceae).
We isolated and characterized 12 microsatellite loci for Tibouchina papyrus (Melastomataceae), an endangered species with narrow and disjunct range, endemics to a few localities in ?cerrado rupestre? from Central Brazil. These microsatellites were obtained by sequencing of a genomic shotgun library for primer design. Leaves from 96 individuals collected in t
Genetics and Molecular Research. Publicado em: 2011
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17. Análise das relações entre espécies do grupo Quadrifidum, subgênero Simulium (Psaroniocompsa) (Diptera, Simuliidae) utilizando o gene Citocromo Oxidase I
Taxonomic knowledge of Simuliidae (Diptera) in the Neotropical region has advanced. In Brazil, where three genera have been recorded, most of the species are in the genus Simulium and are distributed among eight subgenera. In spite of the above-mentioned taxonomic advance, molecular tools have rarely been used in studying these organisms. The sequencing of g
Publicado em: 2010
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18. Transferability and characterization of microsatellite markers in two Neotropical Ficus species
Microsatellite markers were transferred and characterized for two Neotropical fig tree species, Ficus citrifolia and Ficus eximia. Our study demonstrated that microsatellite markers developed from different subgenera of Ficus can be transferred to related species. In the present case, 12 of the 15 primer pairs tested (80%) were successfully transferred to bo
Genetics and Molecular Biology. Publicado em: 03/07/2009
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19. Ant community structure in Neotropical savannas: a test of generality contrasting Brazil and Australia / Estrutura de comunidades de formigas em savanas arbóreas tropicais: um teste da generalidade de padrões ecológicos contrastando Brasil e Austrália
The aim of this study was to compare ant community structure between the savannas of Brazil and Australia. The study was conducted in woodland savanna areas nearby Darwin, in northern Australia, and Uberlândia and Caldas Novas in central Brazil. The sampling design consisted of eight 400 m line transects, four in each continent, with eight pitfall traps and
Publicado em: 2009
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20. InfluÃncia da herbivoria de formigas cortadeiras no sucesso reprodutivo de espÃcies arbustivo-arbÃreas da Floresta AtlÃntica Nordestina
Consuming mainly leaves, the leaf-cutting ants (LCA) are the dominant herbivore of Neotropical forests. Foliar herbivory induces plants to allocate photosynthetic products to compensate for vegetative tissue loss. This creates a trade-off between reproductive and vegetative demands in adultsâ plants and it can reduce the seedlings survival and growth. This
Publicado em: 2009
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21. Análise cladística de Charaxinae Guenée (Lepidoptera, Nymphalidae) / Cladistic analyis of Charaxinae Guenée (Lepidoptera, Nymphalidae)
Charaxinae, a butterfly subfamily which belongs to the Nymphalidae, is the subject of this phylogenetic study. With 20 genera and about 330 species in 6 tribes, this subfamily is scattered all around the tropics of the world and is present in all the biogeographic regions. In this work, 70 species of all genera of the Charaxinae subfamily were chosen to repr
Publicado em: 2008
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22. COMPORTAMENTO DE PEQUENOS FELINOS NEOTROPICAIS EM CATIVEIRO
The lack of information concerning the small neotropical felids can be related to their predominant nocturnal activity, use of dense vegetation and hunting that threats natural populations. Therefore, research with captive animals may supply essential information for the development of effective conservation plans and strategies. The aim of this work was to
Publicado em: 2008
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23. Revisão taxonômica das subespécies de Leptophis ahaetulla (Linnaeus, 1758) (serpentes, colubridae)
O gênero Leptophis constitui um grupo de serpentes de hábitos semi-arborícolas, diurnas, com corpo delgado e longo e cabeça distinta do pescoço; distribuído na América Central e América do Sul. Serpentes deste gênero são diagnosticadas pelo padrão de coloração predominante verde ou cobre, com ou sem faixas longitudinais e bandas transversais est
Publicado em: 2008
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24. Fissão-fusão em Cebus nigritus : flexibilidade social como estratégia de ocupação de ambientes limitantes / Fission-fusion in cebus nigritus : social flexibility as occupation strategy in limitants environments
The primate order presents a great diversity of social organization, from species considered solitary to those where the individuals of a group remain together all the time. Capuchin monkeys (Cebus spp.) generally live in stable and cohesive groups, without the formation of subgroups. However, their social organization can be more flexible. Two former studie
Publicado em: 2007