Serial repetition of cilia pairs along the tail surface of an ascidian larva
✍ Scribed by Crowther, Robert J. ;Whittaker, J. R.
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 882 KB
- Volume
- 268
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Regularly spaced cilia pairs were found in two rows immediately opposite to each other mid‐dorsally and mid‐ventrally along the larval tail surface of the ascidian protochordate Ciona intestinalis. There were approximately ten such equidistantly placed dorsal‐ventral sets embedded in the matrix of the extracellular larval test which forms the flattened vertical tail fin. These immotile cilia originate from pairs of cell bodies in mid‐dorsal and mid‐ventral peripheral nerves running beneath the tail epidermis. The cilia and neural cell bodies were visualized by immunocytochemical staining with anti‐tubulin antibodies; their nature was confirmed by ultrastructural examination. This pattern of cilia and neural cell body placement is conceivably related to the segmentation found in vertebrates. © 1994 Wiley‐Liss, Inc.