Leaf-cutting ants of the genus Acromyrmex cause serious damage to cultivated forest areas. Some f... more Leaf-cutting ants of the genus Acromyrmex cause serious damage to cultivated forest areas. Some flies of the family Phoridae are known to parasitize them, and the result of this interaction can provide a promising basis for the management of these ants. This study was developed to record the parasitism and behavioral responses of Acromyrmex spp. leaf-cutting ants to parasitoid phorids in the municipality of Londrina-PR, Brazil. Visual examinations and collections of leaf-cutting ants and associated phorids were carried out between October/2019 and April/2020 in selected anthills and their trails, located on the campus of the State University of Londrina (UEL) and at the Botanical Garden of Londrina. The collected insects were preserved in 70% alcohol, for later identification of the species. The behavioral response of the ants to the parasitoids was recorded individually and collectively, following protocols cited in the literature. The frequencies of the different response behavior...
Information technology has become so important in defining military power that it overwhelms almo... more Information technology has become so important in defining military power that it overwhelms almost everything else. … The front line really is disappearing from war. Armies must hide. Concealment and deception become their normal operating status. Victory goes to the side having more influence over technology and better access to the world's electronic infrastructure.-Bruce Berkowitz, The New Face of War B ruce Berkowitz was almost right. However, if anything, the wars in Iraq, Afghanistan, and Syria have shown us that access to better technology and a robust electronic infrastructure are simply not enough, and will not be at least for some time in the future. While technology-information technology in particular-and access to electronic
Strategies for the control of leaf-cutting ants have mainly involved granular baits based on fipr... more Strategies for the control of leaf-cutting ants have mainly involved granular baits based on fipronil and sulfluramid as active ingredients, which are commonly coated with attractive citrus-based substances. Their constant use and the lack of alternatives in the market may favor the perception of these substances by ants, causing rejection for foraging and consequent difficulty in their control. In this respect, this study examined the mortality of leaf-cutting ants of the genera Atta and Acromyrmex subjected to direct application with dry powders, in laboratory conditions. As a preliminary treatment, a commercial antiseptic talc powder (C. A. P. T.) was used, followed by isolated treatments that corresponded to its components with potential insecticidal action, namely, salicylic acid, sulfur, boric acid, zinc oxide, in addition to an inert talc powder (Quimidrol®) as the control. For each treatment, 40 (worker) ants, whose activity was reduced due to remaining in a refrigerator pri...
Leaf-cutting ants of the genus Acromyrmex cause serious damage to cultivated forest areas. Some f... more Leaf-cutting ants of the genus Acromyrmex cause serious damage to cultivated forest areas. Some flies of the family Phoridae are known to parasitize them, and the result of this interaction can provide a promising basis for the management of these ants. This study was developed to record the parasitism and behavioral responses of Acromyrmex spp. leaf-cutting ants to parasitoid phorids in the municipality of Londrina-PR, Brazil. Visual examinations and collections of leaf-cutting ants and associated phorids were carried out between October/2019 and April/2020 in selected anthills and their trails, located on the campus of the State University of Londrina (UEL) and at the Botanical Garden of Londrina. The collected insects were preserved in 70% alcohol, for later identification of the species. The behavioral response of the ants to the parasitoids was recorded individually and collectively, following protocols cited in the literature. The frequencies of the different response behavior...
Information technology has become so important in defining military power that it overwhelms almo... more Information technology has become so important in defining military power that it overwhelms almost everything else. … The front line really is disappearing from war. Armies must hide. Concealment and deception become their normal operating status. Victory goes to the side having more influence over technology and better access to the world's electronic infrastructure.-Bruce Berkowitz, The New Face of War B ruce Berkowitz was almost right. However, if anything, the wars in Iraq, Afghanistan, and Syria have shown us that access to better technology and a robust electronic infrastructure are simply not enough, and will not be at least for some time in the future. While technology-information technology in particular-and access to electronic
Strategies for the control of leaf-cutting ants have mainly involved granular baits based on fipr... more Strategies for the control of leaf-cutting ants have mainly involved granular baits based on fipronil and sulfluramid as active ingredients, which are commonly coated with attractive citrus-based substances. Their constant use and the lack of alternatives in the market may favor the perception of these substances by ants, causing rejection for foraging and consequent difficulty in their control. In this respect, this study examined the mortality of leaf-cutting ants of the genera Atta and Acromyrmex subjected to direct application with dry powders, in laboratory conditions. As a preliminary treatment, a commercial antiseptic talc powder (C. A. P. T.) was used, followed by isolated treatments that corresponded to its components with potential insecticidal action, namely, salicylic acid, sulfur, boric acid, zinc oxide, in addition to an inert talc powder (Quimidrol®) as the control. For each treatment, 40 (worker) ants, whose activity was reduced due to remaining in a refrigerator pri...
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Papers by Juliana Fazam