ZFIN ID: ZDB-PUB-191011-7
Pretectal neurons control hunting behaviour
Antinucci, P., Folgueira, M., Bianco, I.H.
Date: 2019
Source: eLIFE   8: (Journal)
Registered Authors: Antinucci, Paride, Bianco, Isaac, Folgueira Otero, Monica
Keywords: command system, neuroscience, optic tectum, optogenetics, predation, pretectum, sensorimotor processing, zebrafish
MeSH Terms:
  • Animals
  • Brain Mapping
  • Neural Pathways/anatomy & histology
  • Neural Pathways/physiology
  • Neurons/physiology*
  • Optical Imaging
  • Optogenetics
  • Predatory Behavior*
  • Pretectal Region/anatomy & histology
  • Pretectal Region/physiology*
  • Staining and Labeling
  • Zebrafish
PubMed: 31591961 Full text @ Elife
For many species, hunting is an innate behaviour that is crucial for survival, yet the circuits that control predatory action sequences are poorly understood. We used larval zebrafish to identify a population of pretectal neurons that control hunting. By combining calcium imaging with a virtual hunting assay, we identified a discrete pretectal region that is selectively active when animals initiate hunting. Targeted genetic labelling allowed us to examine the function and morphology of individual cells and identify two classes of pretectal neuron that project to ipsilateral optic tectum or the contralateral tegmentum. Optogenetic stimulation of single neurons of either class was able to induce sustained hunting sequences, in the absence of prey. Furthermore, laser ablation of these neurons impaired prey-catching and prevented induction of hunting by optogenetic stimulation of the anterior-ventral tectum. We propose that this specific population of pretectal neurons functions as a command system to induce predatory behaviour.