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A Qualitative and Quantitative Study of a Sensory Epithelium in the Inner Ear of a Fish ( Colisa labiosa ; Anabantidae)
Author(s) -
Wegner Nils
Publication year - 1982
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1982.tb00768.x
Subject(s) - efferent , biology , anatomy , kinocilium , stereocilia (inner ear) , ultrastructure , hair cell , afferent , efferent nerve , sensory system , peripheral , inner ear , immunocytochemistry , biophysics , microbiology and biotechnology , neuroscience , endocrinology , medicine
The macula lagenae of the anabantide fish Colisa labiosa was studied with light and transmission electron microscopy. (1) The sensory area is naturally divided in a central area (A) surrounded by a peripheral part (B). (2) Generally the central hair cells are separated by supporting cells, while the peripheral hair cells are found in groups. The cells of a group are not separated by supporting cells. (3) Tubuli‐like structures, hexagonal in cross section, are found in all cells. In peripheral hair cells the longitudinally oriented tubuli‐like structures are aggregated in thick bundles. (4) Variation in shape, electron density, stereocilia arrangement and size of mitochondria was found in different hair cells. (5) The central hair cells contain large accumulations of presynaptic bodies (10–44). Contrarily, the peripheral hair cells contain only a few pre‐synaptic bodies (1–3). (6) The central hair cells are innervated by thick afferent (6–15 μm) and fine presumed efferent (less than 1 μm nerve fibres, while the peripheral hair cells are innervated by thin (1–6 μm) afferent nerve fibres only.