Special cutaneous receptor organs of fish. VII. Ampullary organs of mormyrids

R. Bruce Szamier, Michael V.L. Bennett

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Abstract

Ampullary receptor organs of African mormyrids consist of a cavity beneath the epidermis. The wall of the cavity contains embedded receptor cells and two types of supporting cells. A canal extends from the cavity to an opening at the surface. The lumen of the canal and the ampulla are filled with a jelly‐like material and dense cylinders apparently secreted by two types of supporting cells. Flattened cells of the canal wall are joined by occluding junctions. Synapses between receptor cells and the afferent nerve fiber are characterized by a presynaptic dense body, but presynaptic vesicles were not observed. Degenerating receptor cells are occasionally seen among normal receptor cells in the base of the organ.

Original languageEnglish (US)
Pages (from-to)365-383
Number of pages19
JournalJournal of Morphology
Volume143
Issue number4
DOIs
StatePublished - Aug 1974

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ASJC Scopus subject areas

  • Animal Science and Zoology
  • Developmental Biology

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