Leaf Cutting Ants
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Odontadenia lutea (Apocynaceae) LEAVES: PHYTOCHEMICAL STUDY AND INSECTICIDAL ACTIVITY AGAINST LEAF-CUTTING ANTS Atta sexdens rubropilosa Forel
The present work describes the chemical constituents of Odontadenia lutea (Vell.) Markgr. leaves and the toxicities of its extract and fractions against Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae). Chromatographic procedures of the ethanolic extract resulted in the identification of the triterpene β-amyrin, the flavonoid rutin, two fatty acids
Quím. Nova. Publicado em: 2021-01
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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. Chemical control of leaf-cutting ants: how do workers disperse toxic bait fragments onto fungus garden?
ABSTRACT Leaf-cutting ants are controlled with toxic baits. For the method’s greater efficiency, the baits must be distributed and processed by workers during fungus cultivation. To test hypotheses whether the mode of action of the active ingredients, which blocks the sodium channels and interrupts the production of ATP in the mitochondria, interferes with
Rev. Bras. entomol.. Publicado em: 13/01/2020
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4. TOXICITY OF ALKALOID FRACTIONS FROM Psychotria spp. (RUBIACEAE) AGAINST Atta sexdens FOREL, 1908 (HYMENOPTERA: FORMICIDAE)
ABSTRACT Leaf-cutting ants are the main pests in forest plantations. The most commonly used chemical control for the ants is toxic bait. However, the active ingredients in these baits have been restricted by forest certification organizations, justifying the search for new active compounds to control these insects. Thus, this work aimed to evaluate the formi
CERNE. Publicado em: 09/09/2019
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5. 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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6. Identification of a novel plant-derived attractant for Acromyrmex lobicornis leaf-cutting ants
Abstract: Leaf-cutting ants are considered major pests of agriculture and forestry in the Neotropics. Attractive toxic baits are the prevailing method for managing them. Thus, there is great interest in identifying attractants to incorporate into these baits. Moreover, leaf-cutting ants can avoid toxic baits by associating the attractant with the toxin. We e
An. Acad. Bras. Ciênc.. Publicado em: 19/08/2019
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7. 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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8. Fuzzy Modeling of Reoccupation of a Leaf-cutting Ants' Trail
Neste trabalho, nós modelamos a reocupação de uma trilha de formigas cortadeiras. A modelagem matemática consiste em estudar o deslocamento de formigas cortadeiras em direção a uma região de atração e o retorno das mesmas para o formigueiro. Para conduzir esta pesquisa, nós utilizamos uma equação de difusão-convecção, na qual a dispersão e a
TEMA (São Carlos). Publicado em: 2015-04
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9. 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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10. 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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11. The diet of the black widow spider Latrodectus mirabilis (Theridiidae) in two cereal crops of central Argentina
The spider Latrodectus mirabilis (Holmberg, 1876) is commonly found in cereals crops of central Argentina. We studied its diet composition at the field and capture rate on leaf-cutting ants based on laboratory experiments. This study comprises the first approach that documents the diet of L. mirabilis in wheat and oat fields of central Argentina. We identifi
Iheringia, Sér. Zool.. Publicado em: 2013-12
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12. Insects associated with tropical foliage produced in the coffee growing region of Colombia
We conducted a survey of insects and pest management practices on 34 farms growing ornamental tropical foliage plants in the central coffee region of Colombia over two years. Tropical foliage provided habitat for a diverse range of insects. In total, phytophagous or detritivorous insects from six orders, 40 families and 62 genera were collected. The most com
Rev. Bras. entomol.. Publicado em: 20/09/2013