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Pathogenic nature ofSyncephalastrum inAtta sexdensrubropilosa fungusgardens Mariana O. BarcotoFelipe PedrosaOdair Côrrea Bueno2016 год

Pathogenic nature of Syncephalastrum in Atta sexdens rubropilosa fungus gardens
статья из журнала

Страница публикацииПубликация в OpenAlex
Аннотация: 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 a characteristic disease in fungus gardens. We also characterise the damage caused by this fungus by evaluating physiological and behavioural responses of Atta sexdens rubropilosa subcolonies infected with Syncephalastrum sp.Syncephalastrum sp. fulfils Koch's postulates characterising it as a pathogenic microorganism. Ant workers recognise the infection and remove contaminated fragments from the fungus garden. Syncephalastrum sp. infection causes an interruption of foraging activity, an increase in ant mortality, subcolony deterioration and an increase in the amount of waste generated, all resulting in subcolony death. Syncephalastrum sp. also inhibits the ant fungal cultivar in vitro. The pathogenic effect of Syncephalastrum sp. does not depend on host morbidity or stress (e.g. worker mortality caused by an entomopathogenic fungus).Syncephalastrum sp. treatment resulted in progressive damage in subcolonies. The interactions among Syncephalastrum sp., fungus garden and ants offer new opportunities in integrated pest management of leaf-cutter ants. © 2016 Society of Chemical Industry.
Год издания: 2016
Авторы: Mariana O. Barcoto, Felipe Pedrosa, Odair Côrrea Bueno, André Rodrigues
Издательство: Wiley
Источник: Pest Management Science
Ключевые слова: Insect and Arachnid Ecology and Behavior, Insect and Pesticide Research, Insect symbiosis and bacterial influences
Другие ссылки: Pest Management Science (HTML)
PubMed (HTML)