Ampullary organs and electroreception in freshwater Carcharhinus leucas

Whitehead, Darryl L. (2002) Ampullary organs and electroreception in freshwater Carcharhinus leucas. Journal of Physiology-Paris, 96 5-6: 391-395. doi:10.1016/S0928-4257(03)00017-2


Author Whitehead, Darryl L.
Title Ampullary organs and electroreception in freshwater Carcharhinus leucas
Formatted title
 Ampullary organs and electroreception in freshwater Carcharhinus leucas
Journal name Journal of Physiology-Paris   Check publisher's open access policy
ISSN 0928-4257
1769-7115
Publication date 2002-09-01
Sub-type Article (original research)
DOI 10.1016/S0928-4257(03)00017-2
Open Access Status Not Open Access
Volume 96
Issue 5-6
Start page 391
End page 395
Total pages 5
Place of publication Issy les Moulineaux, Cedex, France
Publisher Elsevier Masson
Language eng
Formatted abstract
 The ampulla of Lorenzini of juvenile Carcharhinus leucas differ histologically from those previously described for other elasmobranchs. The wall of the ampullary canal consists of protruding hillock-shaped epidermal cells that appear to secrete large quantities of a mucopolysaccharide gel. The ampullary organs comprise a long canal sheathed in collagen terminating in an ampulla. Each ampulla contains six alveolar sacs, with each sac containing hundreds of receptor cells. The receptor cells are characteristic of others described for elasmobranchs being pear-shaped cells with a central nucleus and bearing a single kinocilium in the exposed apical region of the cell. The supportive cells differ from general elasmobranch ampullary histology in that some have an apical nucleus. These ampullary structures allow Carcharhinus leucas to detect and respond to artificial electrical fields. Carcharhinus leucas from freshwater habitats respond to electrical signals supplied in freshwater aquaria by abruptly turning towards low voltage stimuli (≤ 10 μA) and either swimming over or biting at the origin of the stimulus.
Keyword Electroreception
Ampullary organs
Alveolar sacs
Receptor cells
Supportive cells
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Marine Studies Publications
 
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Created: Wed, 27 Mar 2013, 01:02:12 EST by Darryl Whitehead on behalf of Centre for Marine Studies