Spinal motoneurons of the larval zebrafish

Paul Z. Myers

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

Application of horseradish peroxidase to lesions of the muscles and the central nervous system of larval zebrafish Brachydanio rerio was used to identify several types of neurons present in the spinal cord. The spinal cord was found to contain three distinct motoneuronal types: primary and secondary motoneurons that innervate the axial muscles, and pectoral fin motoneurons that innervate the muscles of the pectoral girdle. The cell types are similar to those described in larvae of other anamniote vertebrates. The axial muscles of t, given hemisegment are innervated by two or three primary motoneurons and a larger number of secondary motoneurons in the corresponding spinal segment, whereas fin muscles are innervated by a pool of motoneurons spanning several spinal segments.

Original languageEnglish (US)
Pages (from-to)555-561
Number of pages7
JournalJournal of Comparative Neurology
Volume236
Issue number4
DOIs
StatePublished - Jun 22 1985
Externally publishedYes

Keywords

  • Mauthneraxon
  • pectoral motoneurons
  • primary Mteneurons
  • secondary motoneurons

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