Cutter Ant
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Structure and Absolute Configuration of Secondary Metabolites from Two Strains of Streptomyces chartreusis Associated with Attine Ants
The antibiotic streptazolin (1), its E-isomer (2), along with the stereoisomers strepchazolin A (3) and strepchazolin B (4) and the inorganic compound cyclooctasulfur (5) were produced in solid culture by Streptomyces chartreusis ICBG377, which was isolated from the fungal garden of the leaf-cutter ant Acromyrmex subterraneus brunneus. This is the first time
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. Aflatoxins produced by Aspergillus nomius ASR3, a pathogen isolated from the leaf-cutter ant Atta sexdens rubropilosa
ABSTRACT Aspergillus spp. cause economic impacts due to aflatoxins production. Although the toxicity of aflatoxins is already known, little information about their ecological roles is available. Here we investigated the compounds produced by Aspergillus nomius ASR3 directly from a dead leaf-cutter queen ant Atta sexdens rubropilosa and the fungal axenic cult
Rev. bras. farmacogn.. Publicado em: 2017-08
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3. Variabilidade genética Atta robusta Borgmeier (Hymenoptera: Formicidae) com o uso de marcadores microssatélites / Genetic variability on Atta robusta Borgmeier (Hymenoptera: Formicidae) using microsatellite primers
This is the first genetic study on Atta robusta to investigate the genetic variability and structure in populations from Espírito Santo and Rio de Janeiro in which microsatellites specific primers were used. Twenty microsatellite primers for A. robusta were designed and eleven (55%) were polymorphic. When analyzing 80 colonies of A. robusta, the number of a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2011
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4. Polietismo e expectativa de vida em operárias de Atta laevigata / Polyethism and lifespan in Atta laevigata workers
Age polyethism is the change in activities carried out by members of a colony during its life. Older individuals have lower future value to the colony, so it would be better for the colony if they could perform more dangerous tasks outside the nest and not return to its interior. Thus, the risk of bringing pathogens into the colony is reduced, protecting int
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/02/2010
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5. Influência do habitat e da disponibilidade de substrato vegetal na sobrevivência, crescimento e densidade de colônias da saúva Atta laevigata (Fr. Smith) em uma área de cerrado / Influence of habitat and plant-substrate availability on the survival, growth and density of the leaf-cutter ant Atta laevigata (Fr. Smith) in an area of Cerrado
Herbívoros generalistas normalmente aumentam em abundância em áreas degradadas. Entretanto, os mecanismos que governam este aumento são pouco conhecidos. Nesse estudo testei o efeito do habitat e da disponibilidade de recursos alimentares sobre um importante herbívoro do Cerrado, a saúva Atta laevigata. Através de experimentos de transplantes de rainh
Publicado em: 2008
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6. Foraging patterns and plant biomass consumed by Atta laevigata (Hymenoptera: Formicidae) in area of Brazilian Cerrado / Padrões de forrageamento e biomassa vegetal consumida por Atta laevigata (Hymenoptera : Formicidae) em uma área do cerrado brasileiro
Leaf-cutting ants of the genus Atta (Formicidae: Attini) are considered highly generalist herbivores, and they have been frequently referred to as the most prevalent herbivores in the Neotropics. However, most studies on leaf-cutter ants were conducted in lowland tropical rain forests. There is only limited knowledge of the foraging patterns of these ants in
Publicado em: 2007
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7. Interactions etween ants, fruits and seeds in the cerrado : the role of ants in the biology of seeds and seedlings / Interações entre formigas, frutos e sementes em solo de cerrado : o papel de formigas na biologia de sementes e plantulas
Our knowledge about seed dispersal systems has been improved considerably in the last few years. An increasing number of studies has shown that the process of plant regeneration is often much more complex than we realize, including several different agents across subsequent steps of seed dispersal. For instance, ants may reshape the seed shadow after seeds f
Publicado em: 2007