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PNB Colloquium - Andrew Mason - Spatial Hearing with a Micro-scale Auditory System

Description


PC/155

Andrew Mason
University of Toronto

Spatial Hearing with a Micro-scale Auditory System

The parasitoid fly, Ormia ochracea, eavesdrops on calling field crickets to use as hosts. Specialized tympanal hearing in O. ochracea supports accurate localization of cricket songs, by which female flies phonotactically approach hosts to deposit their parasitic larvae. We examined the behaviour of female flies during phonotaxis and larviposition (ie in close proximity to a sound source, following phonotaxis) to identify the role of acoustic cues at each stage of fly-host interaction. We show that, in addition to hyper-acute azimuthal localization during phonotaxis, flies are able to project larvae from distances up to several cm, by aiming at the sound source. During larviposition, flies are sensitive to both azimuth and elevation of the source.


Host: Paul Faure

Contact Department

Department of Psychology, Neuroscience & Behaviour (PNB)
Psychology Building (PC), Room 102
McMaster University
1280 Main Street West
Hamilton Ontario L8S 4K1
Canada