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You searched for: Subject Atta sexdens rubropilosa Remove constraint Subject: Atta sexdens rubropilosa Subject fungus gardens Remove constraint Subject: fungus gardens Subject term Atta sexdens rubropilosa Remove constraint Subject term: Atta sexdens rubropilosa
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1. Colony Dehydration and Water Collection by Specialized Caste in the Leaf-Cutting Ant Atta Sexdens Rubropilosa

Author:
Ribeiro, Pedro Leite; Navas, Carlos A.
Source:
Journal of insect behavior 2008 v.21 no.6 pp. 549-558
ISSN:
0892-7553
Subject:
Atta sexdens rubropilosa; adults; eggs; fungus gardens; humidity; insect behavior; larvae; leaf-cutting ants; longevity; morphs; silica gel; social structure
Abstract:
... Social organization enables leaf-cutting ants to keep appropriate micro-ecological nest conditions for the fungus garden (their main food), eggs, larvae and adults. To maintain stability while facing changing conditions, individual ants must perceive destabilising factors and produce a proper behavioral response. We investigated behavioral responses to experimental dehydration in leaf-cutting ants ...
DOI:
10.1007/s10905-008-9150-3

2. 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; Penicillium citrinum; Trichoderma spirale; Trichosporon; ant colonies; cultivars; foraging; fungal communities; fungi; fungus gardens; gardens; leaf-cutting ants; Brazil
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

3. 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; antibiotics; antiseptics; evolution; fungus gardens; leaf-cutting ants; microorganisms; nesting; organic matter; organic soils; pathogens; queen insects; risk; soil depth; soil horizons
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

4. Digging effort in leaf-cutting ant queens (Atta sexdens rubropilosa) and its effects on survival and colony growth during the claustral phase

Author:
Camargo, R. S.; Forti, L. C.; Fujihara, R. T.; Roces, F.
Source:
Insectes sociaux 2011 v.58 no.1 pp. 17-22
ISSN:
0020-1812
Subject:
Atta sexdens rubropilosa; energy expenditure; environmental factors; foraging; fungi; fungus gardens; leaf-cutting ants; mortality; progeny; queen insects; social insects
Abstract:
... Nest foundation in the leaf-cutting ant Atta sexdens is claustral, and the single queen completely relies on its body reserves throughout, approximately, 9 weeks until the first workers emerge and initiate foraging. Nest digging is much time- and energy-consuming, and it is an open question how queens decide on the length of the tunnel they dig and therefore the depth of the initial chamber. Shall ...
DOI:
10.1007/s00040-010-0110-5

5. 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:
Acromyrmex subterraneus; Atta sexdens rubropilosa; cylinders; fungi; fungus gardens; habitats; larvae; pupae; soil
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

6. Fungal communities in the garden chamber soils of leaf‐cutting ants

Author:
Andre Rodrigues; Michel R. Z. Passarini; Milene Ferro; Nilson S. Nagamoto; Luiz C. Forti; Maurício Bacci Jr.; Lara D. Sette; Fernando C. Pagnocca
Source:
Journal of basic microbiology 2014 v.54 no.11 pp. 1186-1196
ISSN:
0233-111X
Subject:
Atta sexdens rubropilosa; Clavariaceae; Penicillium janthinellum; Plectania; Trichoderma spirale; community structure; environmental impact; fungal communities; fungus gardens; gardens; internal transcribed spacers; leaf-cutting ants; soil fungi; soil structure; species diversity; transcription (genetics); Brazil
Abstract:
... Leaf‐cutting ants modify the properties of the soil adjacent to their nests. Here, we examined whether such an ant‐altered environment impacts the belowground fungal communities. Fungal diversity and community structure of soil from the fungus garden chambers of Atta sexdens rubropilosa and Atta bisphaerica, two widespread leaf‐cutting ants in Brazil, were determined and compared with non‐nest soi ...
DOI:
10.1002/jobm.201200458

7. The Leaf-Cutting ant Atta Sexdens rubropilosa, FOREL, 1908 Prefers Drier Chambers for Garbage Disposal

Author:
Ribeiro, Pedro Leite; Navas, Carlos A.
Source:
Journal of insect behavior 2007 v.20 no.1 pp. 19-24
ISSN:
0892-7553
Subject:
Atta sexdens rubropilosa; food availability; fungi; fungus gardens; gardens; humidity; insect behavior; leaf-cutting ants; municipal solid waste
Abstract:
... Leave cutting ants rely on a fungus garden as their main food supply. This garden produces debris that must be disposed by workers, as it may favor the contamination of the fungus. We assumed that the growth of undesired microorganisms on garbage would increase with humidity, therefore drier areas should be more suitable for garbage disposal. Accordingly, we tested the hypothesis that leave-cuttin ...
DOI:
10.1007/s10905-006-9052-1

8. 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:
Actinomycetales; Atta sexdens rubropilosa; 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
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

9. 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; 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
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