Development of the electrosensory lateral line lobe in the channel catfish, Ictalurus punctatus, with reference to the onset of swimming and feeding behaviors

Michael J. Lannoo, Susan J. Lannoo

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

We describe the development of the medullary electrosensory lateral line lobe (ELL) of Ictalurus punctatus, the channel catfish, with reference to the onsets of three behaviors - undulatory swimming, schooling, and exogenous feeding. Ictalurus punctatus embryos and larvae were staged according to a modification of Armstrong and Child (1962), where hatching occurs as early as stage 40. Using nissl-stained histological sections we report that: 1) lateralis innervation is established by stage 32; 2) the lateralis area is distinguished as a subpial, laterally-positioned cellular region by stages 33-34; 3) lateralis neurons differentiate by stages 42-43; 4) the cerebellar crest forms by stages 45-46; 5) the ELL is distinguished from the (mechanosensory recipient) medial nucleus by stages 48-49; and 6) a morphologically mature ELL forms by stage 53. Swimming and schooling occur prior to the formation of a mature ELL. The onset of feeding correlates with morphological maturity of the ELL.

Original languageEnglish (US)
Pages (from-to)45-53
Number of pages9
JournalMarine and Freshwater Behaviour and Physiology
Volume28
Issue number1-2
DOIs
StatePublished - Jan 1 1996

Keywords

  • Medulla
  • Neuronal substrates
  • Octavolateralis systems
  • Siluriformes

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

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