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Updated: Jan 31, 2026

Functional Evaluation of Olfactory Pathways in Living Xenopus Tadpoles
Published on: December 11, 2018
Functional Evaluation of Olfactory Pathways in Living Xenopus Tadpoles
Beatrice Terni1, Paolo Pacciolla1, Margalida Perelló1
1Laboratory of Neurobiology, Neuroscience Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat; Department of Pathology and Experimental Therapy, School of Medicine, University of Barcelona, L'Hospitalet de Llobregat; Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat.
Abstract:
Xenopus tadpoles offer a unique platform to investigate the function of the nervous system. They provide multiple experimental advantages, such as accessibility to numerous imaging approaches, electrophysiological techniques and behavioral assays. The Xenopus tadpole olfactory system is particularly well suited to investigate the function of synapses established during normal development or reformed after injury. Here, we describe methodologies to evaluate the processing of olfactory information in living Xenopus larvae. We outline a combination of in vivo measurements of presynaptic calcium responses in glomeruli of the olfactory bulb with olfactory-guided behavior assays. Methods can be combined with the transection of olfactory nerves to study the rewiring of synaptic connectivity. Experiments are presented using both wild-type and genetically modified animals expressing GFP reporters in central nervous system cells. Application of the approaches described to genetically modified tadpoles can be useful for unraveling the molecular bases that define vertebrate behavior.
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