Novel fungal disease in complex leaf-cutting ant societies
Research output: Contribution to journal › Journal article › Research › peer-review
David Peter Hughes, Harry C. Evans, Nigel Hywel-Jones, Jacobus Jan Boomsma, Sophie Alice Octavia Armitage
2. Specific fungal diseases of the leaf-cutting ants themselves have not been described, possibly because broad spectrum anti-fungal defences against mycopathogens have reduced their susceptibility to entomopathogens.
3. Using morphological and molecular tools, the present study documents three rare infection events of Acromyrmex and Atta leaf-cutting ants by Ophiocordyceps fungi, agenus of entomopathogens that is normally highly specific in its host choice.
4. As leaf-cutting ants have been intensively studied, the absence of prior records of Ophiocordyceps suggests that these infections may be a novel event and that switching from one host to another is possible. To test the likelihood of this hypothesis, host switching was experimentally induced, and successfully achieved, among five distinct genera of ants, one of which was in a different sub-family than the leaf-cutter ants.
5. Given the substantial differences among the five host ants, the ability of Ophiocordyceps to shift between such distant hosts is remarkable; the results are discussed in the context of ant ecological immunology and fungal invasion strategies.
|Publication status||Published - 2009|
Ants • defence • ecological immunology • horizontal transmission • Ophiocordyceps • parasitism • plasticity • societies