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1. Pathogenicity of filamentous fungi towards Atta sexdens rubropilosa (Hymenoptera: Formicidae)

Author:
Sandra Regina Sousa Cardoso; André Rodrigues; Luiz Carlos Forti; Nilson Satoru Nagamoto
Source:
International journal of tropical insect science 2022 v.42 no.2 pp. 1215-1223
ISSN:
1742-7592
Subject:
Atta sexdens rubropilosa,   etc   ; Aspergillus flavus; Beauveria bassiana; Isaria fumosorosea; Metarhizium anisopliae; Neotropics; Purpureocillium lilacinum; biological control; biopesticides; conidia; leaf-cutting ants; pathogenicity;     Show all 12 Subjects
Abstract:
... In the Neotropics, leaf-cutting ants are pests of great importance to various crops. The natural defenses and complexity of these ants reduce the impact of potentially useful pathogens for biological control. Furthermore, several types of research with entomopathogenic fungi usually focus on only a few isolates of well-known species, like Beauveria bassiana and Metarhizium anisopliae, in addition ...
DOI:
10.1007/s42690-021-00640-2

2. Effects of Entomopathogenic Fungi on Individuals as Well as Groups of Workers and Immatures of Atta sexdens rubropilosa Leaf-Cutting Ants

Author:
Luis Eduardo Pontes Stefanelli; Tarcísio Marcos Macedo Mota Filho; Roberto da Silva Camargo; Carlos Alberto Oliveira de Matos; Luiz Carlos Forti
Source:
Insects 2020 v.12 no.1 pp. -
ISSN:
2075-4450
Subject:
Atta sexdens rubropilosa,   etc   ; Beauveria bassiana; Trichoderma harzianum; ant control; immatures; ingredients; leaf-cutting ants; pathogenicity; survival rate; toxicity;     Show all 10 Subjects
Abstract:
... In 2009, sulfluramid, the main ingredient in toxic baits for leaf-cutting ant control, was included in Annex B of the Stockholm Convention on Persistent Organic Pollutants. This resulted in interest in the use of entomopathogenic fungi such as Beauveria bassiana and Trichoderma harzianum for leaf-cutting ant control. The efficiency of these fungi in controlling these insects and the way that ants ...
DOI:
10.3390/insects12010010

3. Tree seedling responses to leaf‐cutting ants herbivory in Atlantic Forest restoration sites

Author:
Jéssica Magon Garcia; Alexandre de Mello Bordignon; Géssi de Sousa Gonzaga; José Marcelo Domingues Torezan
Source:
Biotropica 2020 v.52 no.5 pp. 884-895
ISSN:
0006-3606
Subject:
Atta sexdens rubropilosa,   etc   ; flavonoids; forest restoration; host preferences; indigenous species; leaf nitrogen content; leaf-cutting ants; phytophagous insects; pioneer species; polyphenols; seedlings; species diversity; specific leaf area; tannins; tree damage; tree growth; tree height; tree mortality; tropical forests; Brazil;     Show all 20 Subjects
Abstract:
... Leaf‐cutting ants (LCA) are generalist herbivores capable of causing severe plant damage. Negative impacts of ant herbivory vary according to the density of nests and availability of palatable plants; however, it is not yet clear how these herbivores affect tropical forest restoration sites. To investigate how LCA preference affects plant species performance, we evaluated the herbivory of Atta sex ...
DOI:
10.1111/btp.12808

4. Virola sebifera Aubl. (Myristicaceae) leaf chemical composition and implications on leaf-cutter ant foraging choice

Author:
Amanda Aparecida Carlos; Karla da Silva Malaquias; Rafael Camargo Consolmagno; André Lucio Franceschini Sarria; João Batista Fernandes; Odair Correa Bueno
Source:
Arthropod-plant interactions 2018 v.12 no.3 pp. 361-368
ISSN:
1872-8855
Subject:
Atta sexdens rubropilosa,   etc   ; Virola; chemical composition; foraging; fungi; leaf-cutting ants; leaves; physicochemical properties; trichomes; volatile compounds;     Show all 10 Subjects
Abstract:
... Leaf-cutter ant plant material choice is essential for colony maintenance and growth. Plant material is used as a substrate for cultivating symbiotic fungus, and the ants’ preference for particular leaves, tends to be determined by vegetal age-related physicochemical factors. The plant species Virola sebifera Aubl. (Myristicaceae), for example, shows a large number of leaf surface trichomes. Altho ...
DOI:
10.1007/s11829-017-9582-9

5. Lethal Effect and Behavioral Responses of Leaf-Cutting Ants to Essential Oil of Pogostemon cablin (Lamiaceae) and Its Nanoformulation

Author:
A G Rocha; B M S Oliveira; C R Melo; T S Sampaio; A F Blank; A D Lima; R S Nunes; A P A Araújo; P F Cristaldo; L Bacci
Source:
Neotropical entomology 2018 v.47 no.6 pp. 769-779
ISSN:
1519-566X
Subject:
Atta sexdens rubropilosa,   etc   ; Pogostemon cablin; acute toxicity; bioassays; death; essential oils; ethanol; forests; fumigation; insecticidal properties; leaf-cutting ants; magnetism; mixing; pests; polyethylene glycol;     Show all 15 Subjects
Abstract:
... Leaf-cutting ants belonging to the genus Atta (Formicidae: Myrmicinae) are important pests in agricultural and forest environments. In the present study, we evaluated the formicidal activity of the essential oil of Pogostemon cablin and its nanoformulation on the leaf-cutting ants: Atta opaciceps (Borgmeier, 1939), Atta sexdens (Linnaeus, 1758), and Atta sexdens rubropilosa Forel, 1908. The nanofo ...
DOI:
10.1007/s13744-018-0615-6

6. Effect of the presence of brood and fungus on the nest architecture and digging activity of Acromyrmex subterraneus Forel (Hymenoptera, Formicidae)

Author:
Carlos Magno dos Santos; Roberto da Silva Camargo; Mariana Brugger; Luiz Carlos Forti; Juliane Floriano Santos Lopes
Source:
Revista Brasileira de entomologia 2017 v.61 no.1 pp. 80-85
ISSN:
0085-5626
Subject:
Atta sexdens rubropilosa,   etc   ; Acromyrmex subterraneus; cylinders; fungi; fungus gardens; habitats; larvae; pupae; soil;     Show all 9 Subjects
Abstract:
... This study investigated the stimuli that trigger digging behavior in Acromyrmex subterraneus during nest building. The hypothesis was that the presence of the fungus garden and/or brood triggers the excavation of tunnels and chambers. For the experiment, the excavation rate of individually marked workers kept in plastic cylinders filled with soil was recorded. Four treatments were applied: (1) 30 ...
DOI:
10.1016/j.rbe.2016.12.002

7. Post-Fire Effect of Savannah Vegetation on the Establishment of New Colonies of Atta sexdens rubropilosa (Hymenoptera: Formicidae)

Author:
Silva Denise Alves da; Luiz Marcelo Felix; Jesus Flávio Gonçalves de; Rocha Ednaldo Cândido; Oliveira Marco Antônio de; Araújo Márcio da Silva
Source:
Florida entomologist 2016 v.99 no.4 pp. 744-749
ISSN:
0015-4040
Subject:
Atta sexdens rubropilosa,   etc   ; adverse effects; biotic factors; burning; cerrado; females; flight; fungi; leaf-cutting ants; microsymbionts; mortality; savannas; soil;     Show all 13 Subjects
Abstract:
... Establishing their initial colony is probably the most critical moment in the life of leaf-cutting ants. The non-establishment is connected to abiotic and biotic factors, and the high mortality rates of initial colonies are possibly associated with entomopathogenic or antagonistic microorganisms to the symbiotic fungus present in the soil, hosted by these ants. Fire in the vegetation, depending on ...
DOI:
10.1653/024.099.0427

8. Pathogenic nature of Syncephalastrum in Atta sexdens rubropilosa fungus gardens

Author:
Mariana O Barcoto; Felipe Pedrosa; Odair C Bueno; Andre Rodrigues
Source:
Pest management science 2017 v.73 no.5 pp. 999-1009
ISSN:
1526-498X
Subject:
Atta sexdens rubropilosa,   etc   ; Neotropics; Syncephalastrum; biological control; cultivars; death; entomopathogenic fungi; foraging; fungus gardens; herbivores; insecticides; integrated pest management; leaf-cutting ants; morbidity; mortality; pests; wastes; worker ants;     Show all 18 Subjects
Abstract:
... BACKGROUND: Leaf‐cutter ants are considered to be a major herbivore and agricultural pest in the Neotropics. They are often controlled by environmentally persistent insecticides. Biological control using pathogenic fungi is regarded as an alternative for the management of these insects. Here, we assess whether the filamentous fungus Syncephalastrum sp. is a pathogenic microorganism responsible for ...
DOI:
10.1002/ps.4416

9. Comparative analysis of fungal communities in colonies of two leaf-cutting ant species with different substratum preferences

Author:
Jaqueline S. Pereira; Rafael R. Costa; Nilson S. Nagamoto; Luiz C. Forti; Fernando C. Pagnocca; Andre Rodrigues
Source:
Fungal ecology 2016 v.21 pp. 68-75
ISSN:
1754-5048
Subject:
Atta sexdens rubropilosa,   etc   ; Penicillium citrinum; Trichoderma spirale; Trichosporon; ant colonies; cultivars; foraging; fungal communities; fungi; fungus gardens; gardens; leaf-cutting ants; Brazil;     Show all 13 Subjects
Abstract:
... Fungus gardens of leaf-cutting ants harbor diverse alien fungi in addition to their fungal cultivar. Previous work suggested that alien microorganisms are likely derived from the substrata foraged by ant workers and incorporated into the fungus gardens. To test this hypothesis, we sampled 1014 garden fragments from 16 field colonies of Atta sexdens rubropilosa (a dicot-cutting ant) and Atta capigu ...
DOI:
10.1016/j.funeco.2016.03.004

10. Microbial Communities in Different Tissues of Atta sexdens rubropilosa Leaf-cutting Ants

Author:
Alexsandro S. Vieira; Manuela O. Ramalho; Cintia Martins; Vanderlei G. Martins; Odair C. Bueno
Source:
Current microbiology 2017 v.74 no.10 pp. 1216-1225
ISSN:
0343-8651
Subject:
Atta sexdens rubropilosa,   etc   ; Actinomycetales; Bacillales; Burkholderiales; Clostridiales; Enterobacteriales; Entomoplasmatales; Lactobacillales; Syntrophobacterales; bacteria; evolution; fungi; fungus gardens; immune response; leaf-cutting ants; leaves; microbial communities; microsymbionts; midgut; nutrition; parasitism; symbiosis;     Show all 22 Subjects
Abstract:
... Bacterial endosymbionts are common in all insects, and symbiosis has played an integral role in ant evolution. Atta sexdens rubropilosa leaf-cutting ants cultivate their symbiotic fungus using fresh leaves. They need to defend themselves and their brood against diseases, but they also need to defend their obligate fungus gardens, their primary food source, from infection, parasitism, and usurpatio ...
DOI:
10.1007/s00284-017-1307-x

11. Aflatoxins produced by Aspergillus nomius ASR3, a pathogen isolated from the leaf-cutter ant Atta sexdens rubropilosa

Author:
Eduardo Afonso da Silva-Junior; Camila Raquel Paludo; Lohan Valadares; Norberto Peporine Lopes; Fábio Santos do Nascimento; Mônica Tallarico Pupo
Source:
Revista Brasileira de Farmacognosia 2017 v.27 no.4 pp. 529-532
ISSN:
0102-695X
Subject:
Atta sexdens rubropilosa,   etc   ; Aspergillus nomius; aflatoxins; axenic culture; chemical analysis; economic impact; fungi; leaf-cutting ants; pathogenicity; pathogens; queen insects; tandem mass spectrometry; toxicity;     Show all 13 Subjects
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 culture. Chemical analyses were carried out by high-r ...
DOI:
10.1016/j.bjp.2017.05.001

12. Sublethal doses of fipronil intensify synapsin immunostaining in Atta sexdens rubropilosa (Hymenoptera: Formicidae) brains

Author:
Priscila Cintra‐Socolowski; Thaisa C Roat; Roberta CF Nocelli; Pablo H Nunes; Rafael AC Ferreira; Osmar Malaspina; Odair C Bueno
Source:
Pest management science 2016 v.72 no.5 pp. 907-912
ISSN:
1526-498X
Subject:
Atta sexdens rubropilosa,   etc   ; agroecosystems; fipronil; fluorescence; immunocytochemistry; insecticides; leaf-cutting ants; lethal dose 50; mushroom bodies; neurotoxicity; neurotransmitters; statistical analysis; xenobiotics;     Show all 13 Subjects
Abstract:
... BACKGROUND: Although ants are common insects in agricultural ecosystems, few studies have considered how xenobiotics might induce physiological and morphological alterations in these insects. This study aimed to verify the neurotoxic action of sublethal doses of fipronil on the mushroom bodies of brains from the leaf‐cutting ant Atta sexdens rubropilosa through immunocytochemistry analysis for the ...
DOI:
10.1002/ps.4065

13. Diet type modifies ingestion rates and trophallactic exchanges in leaf‐cutting ants

Author:
D.D.O. Moreira; W. Dáttilo; V. Morais; M. Erthal Jr.; C.P. Silva; R. I. Samuels
Source:
Entomologia experimentalis et applicata 2015 v.154 no.1 pp. 45-52
ISSN:
0013-8703
Subject:
Atta sexdens rubropilosa,   etc   ; Acromyrmex subterraneus subterraneus; control methods; imidacloprid; ingestion; laboratory experimentation; leaf-cutting ants; liquid diet; liquids; nests; survival rate; toxicity; trophallaxis;     Show all 13 Subjects
Abstract:
... Conventional control of leaf‐cutting ants is mainly carried out by application of solid insecticide baits. However, alternative approaches could increase the efficiency of control methods. Here, we investigated the hypothesis that liquid and semi‐solid baits are more readily ingested by leaf‐cutting ants and are therefore more toxic than solid baits. Furthermore, following increased ingestion rate ...
DOI:
10.1111/eea.12254

14. Banding Patterns of Three Leafcutter Ant Species of the Genus Atta (Formicidae: Myrmicinae) and Chromosomal Inferences

Author:
Barros Luísa Antônia Campos; Teixeira Gisele Amaro; Aguiar Hilton Jeferson Alves Cardoso De; Mariano Cléa Dos Santos Ferreira; Delabie Jacques Hubert Charles; Pompolo Silvia Das Graças
Source:
Florida entomologist 2014 v.97 no.4 pp. 1694-1701
ISSN:
0015-4040
Subject:
Atta sexdens rubropilosa,   etc   ; Acromyrmex; Atta colombica; centromeres; chromosome banding; chromosome number; fluorescent dyes; heterochromatin; metacentric chromosomes; pests; phylogeny; population; tropics; Brazil;     Show all 14 Subjects
Abstract:
... Among Neotropical ants, the genera Acromyrmex and Atta are of great importance because they include the major agricultural pest species. Regarding the genus Atta, considered one of the most derived of the tribe Attini, cytogenetic data exists for 5 taxa that present 2n = 22 chromosomes; however, information regarding banding patterns is only available for Atta colombica. Cytogenetics has contribut ...
DOI:
10.1653/024.097.0444

15. A New Imidazole Alkaloid and Other Constituents from Pilocarpus grandiflorus and their Antifungal Activity

Author:
Rejane C. de Souza; João B. Fernandes; Paulo C. Vieira; M. Fátima das G. F. da Silva; Marizete F. P. Godoy; Fernando C. Pagnocca; Odair C. Bueno; M. José A. Hebling; José R. Pirani
Source:
Zeitschrift für Naturforschung 2014 v.60 no.7 pp. 787-791
ISSN:
0932-0776
Subject:
Atta sexdens rubropilosa,   etc   ; Leucoagaricus; Pilocarpus; alkaloids; antifungal properties; fungi; leaf-cutting ants; quinolones; scopoletin; spectral analysis; stems; syringic acid; vanillic acid;     Show all 13 Subjects
Abstract:
... The stems of Pilocarpus grandiflorus have afforded the new imidazole alkaloid 4,6-dehydro- 1,2,4,5-tetrahydro-2,5-dioxopilocarpine in addition to the 17 known compounds germanicol, β - amiryn, ocotillone, stigmast-4-en-3-one, 3β -hydroxy-stigmast-5-en-7-one, 6β -hydroxy-stigmast-4- en-3-one, β -sitosterol, scopoletin, 3-(1’,1’-dimethylallyl)-scopoletin, elisin, dictamine, 4-methoxy-2- quinolone, p ...
DOI:
10.1515/znb-2005-0715

16. Insights Into the Proteome of the Spermatheca of the Leaf-Cutting Ant Atta sexdens rubropilosa (Hymenoptera: Formicidae)

Author:
Malta Juliana; Martins Gustavo Ferreira; Marques Ana Ermelinda; Games Patrícia Dias; Zanuncio José Cola; Baracat-Pereira Maria Cristina; Salomão Tânia Maria Fernandes
Source:
Florida entomologist 2014 v.97 no.4 pp. 1856-1861
ISSN:
0015-4040
Subject:
Atta sexdens rubropilosa,   etc   ; females; gene expression regulation; leaf-cutting ants; protein synthesis; proteins; proteome; spermatheca; spermatozoa; storage time;     Show all 10 Subjects
Abstract:
... SummaryFifteen of the 22 differentially expressed proteins in the spermathecae of virgin and inseminated females of the leaf cutting ant Atta sexdens rubropilosa were tentatively identified. The profile of expressed proteins of the spermatheca differed significantly between virgin and fertilized females. Data from this study should contribute to the elucidation of the roles of these various protei ...
DOI:
10.1653/024.097.0467

17. Nest Digging by Leaf-Cutting Ants: Effect of Group Size and Functional Structures

Author:
Camargo Roberto da Silva; Fujihara Ricardo Toshio; Forti Luiz Carlos; São Paulo Research Foundation
Source:
Psyche 2012 v.2012 pp. -
ISSN:
0033-2615
Subject:
Atta sexdens rubropilosa,   etc   ; fungi; group effect; group size; leaf-cutting ants; leaves; progeny; worker ants;     Show all 8 Subjects
Abstract:
... Leaf-cutting ant workers dig underground chambers, for housing their symbiotic fungus, interconnected by a vast quantity of tunnels whose function is to permit the entrance of food (leaves), gaseous exchanges, and movement of workers, offspring, and the queen. Digging is a task executed by a group of workers, but little is known about the group effect and group-constructed functional structures. T ...
DOI:
10.1155/2012/426719

18. Comparative morpho-physiology of the metapleural glands of two Atta leaf-cutting ant queens nesting in clayish and organic soils

Author:
Alexsandro Santana Vieira; Maria Izabel Camargo-Mathias; Flavio Roces
Source:
Arthropod structure & development 2015 v.44 no.5 pp. 444-454
ISSN:
1467-8039
Subject:
Atta sexdens rubropilosa,   etc   ; antibiotics; antiseptics; evolution; fungus gardens; leaf-cutting ants; microorganisms; nesting; organic matter; organic soils; pathogens; queen insects; risk; soil depth; soil horizons;     Show all 15 Subjects
Abstract:
... Queens of leaf-cutting ants found their nests singly, each consisting of a vertical tunnel and a final horizontal chamber. Because of the claustral mode of nest founding, the queen and/or her initial fungus garden are exposed to threats imposed by several soil pathogens, and the antibiotic secretions produced by their metapleural glands are considered a main adaptation to deal with them. Nests of ...
DOI:
10.1016/j.asd.2015.06.005

19. Electrophysiological Responses of Atta sexdens rubropilosa Workers to Essential Oils of Eucalyptus and its Chemical Composition

Author:
Luciane G. Batista-Pereira; João B. Fernandes; M. Fátima G. F. da Silva; Paulo C. Vieira; Odair C. Bueno; Arlene G. Corrêa
Source:
Zeitschrift für Naturforschung 2014 v.61 no.9-10 pp. 749-755
ISSN:
1865-7125
Subject:
Atta sexdens rubropilosa,   etc   ; Eucalyptus; allelochemicals; antennae; chemical composition; defoliation; electroantennography; electrophysiology; essential oils; foraging; leaf-cutting ants; pests; receptors; terpenoids; volatile compounds; wood; worker ants;     Show all 17 Subjects
Abstract:
... The leaf-cutting ant Atta sexdens rubropilosa Forel, 1908 is the most harmful of the Eucalyptus pests, causing severe losses in wood production through defoliation. Various strategies have been tried and effort spent on the development of methods to control this pest, however no practical and environmentally acceptable one currently exists. In this work the chemical composition of the essential oi ...
DOI:
10.1515/znc-2006-9-1023

20. Ricinus communis and Jatropha curcas (Euphorbiaceae) Seed Oil Toxicity Against Atta sexdens rubropilosa (Hymenoptera: Formicidae)

Author:
Alonso E. C.; Santos D.Y.A.C.
Source:
Journal of economic entomology 2013 v.106 no.2 pp. 742-746
ISSN:
0022-0493
Subject:
Atta sexdens rubropilosa,   etc   ; Jatropha curcas; Ricinus communis; artificial diets; bioassays; castor oil; dietary supplements; direct contact; herbivores; ingestion; leaf-cutting ants; rearing; toxicity; tropics;     Show all 14 Subjects
Abstract:
... Leaf-cutting ants are the main herbivores in the New World tropics. Although the toxicity of seed oils against these ants has been poorly investigated, previous results revealed that seed oils exert considerable toxic activity against these insects. This paper analyzes the toxic action and deterrent properties of castor oil, Ricinus communis L., and physic nut oil, Jatropha curcas L., against work ...