{Reference Type}: Journal Article
{Title}: Complete persistence of the primary somatosensory system in zebrafish.
{Author}: Navajas Acedo J;
{Journal}: Dev Biol
{Volume}: 515
{Issue}: 0
{Year}: 2024 Nov 14
{Factor}: 3.148
{DOI}: 10.1016/j.ydbio.2024.05.004
{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 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 a developmental stage when the animals display complex behavioral repertoires.