Journal article
On the Development of Electroreceptive Ampullary Organs of Triturus alpestris (Amphibia: Urodela)
Amphibia-reptilia, Vol.7(1), pp.1-9
1986
DOI: 10.1163/156853886X00217
Abstract
AbstractThe ontogenesis of the organs of the lateral-line system of the alpine newt (Triturus alpestris) was examined with special emphasis on the ampullary organs using resin embedded thick sections. The mechanoreceptive neuromasts and the electroreceptive ampullary organ were indistinguishable prior to hatching. At hatching only few ampullary organs were found around the eye. These organs consist of one or two egg-shaped sensory cells and a few supporting cells. The ratio of ampullary organs and neuromasts changes from 1:15.6 (stage 36) to 1:1.1 (stage 62). The number of unidentifiable organs decreases constantly over this period of time and becomes zero at the oldest stages observed. Besides an absolute numerical increase in both types of organs both grow by increasing the number of cells per organ. Comparison with the development of the ampullary organs in catfish shows a striking similarity which suggest either similar functional constraints acting on both catfish and newts or can be interpreted as an indication of homology of both types of organs.
Details
- Title: Subtitle
- On the Development of Electroreceptive Ampullary Organs of Triturus alpestris (Amphibia: Urodela)
- Creators
- Dorothea Bolz - 1Fakultät Biologie, Abteilung Neuroanatomie, Postfach 8640, D-4800 Bielefeld 1, F.R. GermanyBernd Fritzsch - 2Fakultät Biologie, Abteilung Neuroanatomie, Postfach 8640, D-4800 Bielefeld 1, F.R. Germany
- Resource Type
- Journal article
- Publication Details
- Amphibia-reptilia, Vol.7(1), pp.1-9
- DOI
- 10.1163/156853886X00217
- ISSN
- 0173-5373
- eISSN
- 1568-5381
- Language
- English
- Date published
- 1986
- Academic Unit
- Iowa Neuroscience Institute; Biology; Craniofacial Anomalies Research Center
- Record Identifier
- 9984070891802771
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