This virtual seminar series is aimed to bring together neuroscientists, theorists, ecologists, and neuro-economists interested in exploring neural and theoretical mechanisms of foraging across multiple species.
Season 2 Episode 3
Pauline Fleischmann: How to become a successful Cataglyphis forager.
Cataglyphis desert ants are well known for their navigational capacities especially during foraging. To find their way, foragers mainly use celestial cues like the position of the sun or the UV polarization pattern during their extensive outbound searches for food. In addition, they rely on different sensory cues for navigation, e.g. visual, olfactory or tactile cues. When the ants leave the nest for the first time, they perform learning walks to acquire all information necessary for navigation as foragers. They have to learn landmarks and calibrate their celestial compass systems. We could show that Greek Cataglyphis nodus ants use the geomagnetic field to align their gaze directions towards the nest entrance during initial learning-walk pirouettes. Furthermore, the ants' brains undergo drastic changes during the transition from interior to exterior worker, especially when they are able to perform learning walks in their natural habitat. Therefore, Cataglyphis is a suitable neuroethological model to study navigation guided by a plethora of sensory cues.
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