Leaf Cutting Ant
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. INSECTICIDAL AND FUNGICIDAL ACTIVITY OF A MAGNESIUM COMPOUND CONTAINING ISOVANILLIC ACID AGAINST LEAF-CUTTING ANT AND ITS SYMBIOTIC FUNGUS
Pesticides offer a simple, cost-effective solution to ensure food supplies for a growing world population. However, their environmental performance needs improvement if pesticides are to continue contributing importantly. This study explores the insecticidal potential of a magnesium (II) metal complex containing 1,10-phenanthroline and isovanillic acid (MgPh
Quím. Nova. Publicado em: 2021-03
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2. Analysis of the Gene Expression and RNAi-Mediated Knockdown of Chitin Synthase from Leaf-Cutting Ant Atta sexdens
Chitin synthase (CHS) is the enzyme specifically associated with chitin synthesis, an important component of diverse organisms including insects. Two alternative spliced transcripts of the CHS gene (AsCHS-A1 and AsCHS-A2) were identified by quantitative reverse-transcription polymerase chain reaction (RT-qPCR) during the development of the leaf-cutting ant A
J. Braz. Chem. Soc.. Publicado em: 2020-10
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3. Damage by Acromyrmex spp. to an Initial Pinus taeda L. Planting
ABSTRACT The objective of this study is to evaluate the damage caused by Acromyrmex heyeri Forel, 1899 and Acromyrmex lobicornis Emery, 1887 to Pinus taeda L. seedlings during the first two months after replanting. The experiment was conducted in the company Bosques del Plata, located in the province of Corrientes, Argentina. The evaluations were carried out
Floresta Ambient.. Publicado em: 22/08/2019
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4. The trade-off between the transmission of chemical cues and parasites: behavioral interactions between leaf-cutting ant workers of different age classes
ABSTRACT Social animals are faced with an intriguing dilemma. On the one hand, interactions between individuals are essential to exchange information and to promote cohesion, while on the other hand such interactions carry with them the risk of catching and transmitting parasites. This trade-off is particularly significant for social insects because low with
Rev. Bras. entomol.. Publicado em: 2017-01
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5. Dynamics of the restoration of physical trails in the grass-cutting ant Atta capiguara (Hymenoptera, Formicidae)
ABSTRACT Dynamics of the restoration of physical trails in the grass-cutting ant Atta capiguara. Leaf-cutting ants of the genus Atta build long physical trails by cutting the vegetation growing on the soil surface and removing the small objects they find across their path. Little is known on the dynamics of trail construction in these ants. How much time do
Rev. Bras. entomol.. Publicado em: 2016-03
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6. Protein content of leaf-cutting ant queens before the nuptial flight and during the post-claustral phase
Protein content of leaf-cutting ant queens before the nuptial flight and during the post-claustral phase. This study evaluated the crude protein content of queens of Atta sexdens before the nuptial flight and after the claustral phase in laboratory and field colonies. The hypothesis was that protein is used for survival of the queen and for early colony grow
Rev. Bras. entomol.. Publicado em: 21/11/2014
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7. Development and validation of a RP-HPLC method to determine the xanthyletin content in biodegradable polymeric nanoparticles
Xanthyletin is used as an inhibitor of the symbiotic fungus (Leucoagaricus gongylophorus) of the leaf-cutting ant (Atta sexdens rubropilosa), one of the most significant agricultural plague insects. The incorporation of this compound into nanoparticles is a promising approach to effectively control leaf-cutting ants. This study presents the development and v
Quím. Nova. Publicado em: 2014
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8. Energetic cost of digging behavior in workers of the leaf-cutting ant Atta sexdens (Fabricius)
Energetic cost of digging behavior in workers of the leaf-cutting ant Atta sexdens (Fabricius). During nest excavation, leaf-cutting ant workers undergo reduction in their body reserve, particularly carbohydrates. In order to estimate the energetic cost of digging, groups of 30 workers of the leaf-cutting ant Atta sexdens were sealed in a hermetic chamber fo
Rev. Bras. entomol.. Publicado em: 06/12/2013
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9. Energy substrate used by workers of leaf-cutting ants during nest excavation
Energy substrate used by workers of leaf-cutting ants during nest excavation. In this study we aimed to ascertain whether leaf-cutting ant workers lose body reserves (fat or sugars) as a function of nest excavation. For each treatment, we isolated 10 workers of Atta sexdens into two experimental groups, Control (C- without excavation) and Soil (S- with excav
Rev. Bras. entomol.. Publicado em: 06/12/2013
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10. Técnicas de bioinformática aplicadas ao estudo de poligalacturonases de fungos
Plant cell walls are composed of approximately 65% cellulose microfibrils and pectin. The latter is proteolytically degraded by the so-called pectinases enzymes (also known as pectinolytic enzymes). Pectinases may be either depolymerizing. They are produced by plants, filamentous fungi, bacteria, and yeast. Due to the wide commercial use of pectinase, one ha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
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11. Nível de dano econômico para formigas-cortadeiras em função do índice de produtividade florestal de eucaliptais em uma região de Mata Atlântica
The production and quality of eucalyptus plantations have been studied in areas with different densities of ant nests, being important to estimate losses caused by leaf-cutting ants. The effects of leaf-cutting ant on wood production in differents productivity sites were studied in eucalyptus plantations in the region of Atlantic Forest, Minas Gerais State,
Neotropical Entomology. Publicado em: 2011-08
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12. Densidade e tamanho de formigueiros de Acromyrmex crassispinus em plantios de Pinus taeda.
O objetivo deste trabalho foi avaliar a densidade e o tamanho dos formigueiros de Acromyrmex crassispinus, ao longo do ano, em plantios de Pinus taeda de diferentes idades. Os experimentos foram realizados, em Rio Negrinho e em Três Barras, SC, em talhões de P. taeda com diferentes idades (recém-plantado, três anos e seis anos de idade). Em cada trata
Pesquisa Agropecuária Brasileira. Publicado em: 2011