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Evolution of sensory-driven behaviours in blind cavefish

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If you have a question about this talk, please contact Nadine Randel.

Morphological and behavioural adaptations are key to colonize novel environments. I will use the example of the fish model Astyanax mexicanus, to show the evolution of several sensory systems during adaptation to total and perpetual darkness. As compared to their conspecifics which swim in rivers, cave-dwelling morphs of this species loose their eyes during embryogenesis, and gain outstanding olfactory specialisation to recognize food odours. I will describe how the development and anatomy of the olfactory system and the behavioural responses to olfactory cues have evolved in cavefish.

This talk is part of the Zoology Departmental Seminar Series series.

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