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bioRxiv · 10.1101/2023.12.19.572352

Persistence of the primary somatosensory system in zebrafish

Navajas Acedo, J.
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Abstract

The somatosensory system detects peripheral stimuli that are translated into behaviors necessary for survival. Fishes and amphibians possess two somatosensory systems in the trunk: the primary somatosensory system, formed by the Rohon-Beard neurons, and the secondary somatosensory system, formed by the neural crest cell-derived neurons of the Dorsal Root Ganglia. Rohon-Beard neurons have been characterized as a transient population that mostly disappears during the first days of life and is functionally replaced by the Dorsal Root Ganglia. Here, I comprehensively follow Rohon-Beard neurons in vivo and show that the entire repertoire remains present in zebrafish from 1-day post-fertilization until the juvenile stage, 15-days post-fertilization. These data indicate that zebrafish retain two complete somatosensory systems until at least up to a developmental stage when the animals display complex behavioral repertoires.

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Navajas Acedo, J.. 2023-12-19. Persistence of the primary somatosensory system in zebrafish. https://doi.org/10.1101/2023.12.19.572352

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