Interactions involving entomopathogenic fungi and insects: an applied perspective
Baverstock, J.; Pell, J. K.; Roy, Helen. 2009 Interactions involving entomopathogenic fungi and insects: an applied perspective. [Keynote] In: 42nd Annual Meeting of the Society for Invertebrate Pathology, Park City, Utah, 16-20 Aug 2009.Full text not available from this repository.
The use of entomopathogenic fungi as control agents of pests has traditionally followed the principals of inundative biological control where a virulent strain is isolated, mass produced and applied to crops in the form of sprays. Whilst this has been succesful for Hypocreales such as Beauveria bassiana and Metarhizium anisopliae, there has been less success in the formulation and mass production of Entomophthorales. Despite this the host-specificity exhibited by the Entomophthorales ensuures that they remain an attractive option within alternative biological control stratgegies. At present the efficacy of both groups of fungi within guilds of insect natural enemies is being assessed as part of conservation biological control schemes. The success of these schemes will depend on the interactions that occur between the pest and its enemies (multitrophic interactions) and those between the enemies themselves (intraguild interactions). Whereas positive intraguild interactions may benefit pest control, negative intraguild interactions may have a detrimental effect. Alternatively avoidance of a fungal pathogen by atarget insect may render it useless as a biological control agent. Here we describe interactions that occur between entomopathogenic fungi and arthropods in a range of cropping systems. The ability of arthropods to dectect and respond to fungal pathogens will be discussed alongside the effect of arthropod foraging on the transmission and vectoring of fungi. Finally the maniulation of insect behaviour for the auto-dissemination of fungal pathogens will be described.
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