The pineal complex of the three-spined stickleback,Gasterosteus aculeatus L. |
| |
| Authors: | Th. van Veen P. Ekström B. Borg M. Møller |
| |
| Affiliation: | (1) Department of Zoology, University of Lund, Lund, Sweden;(2) Department of Zoology, University of Lund, Helgonavägen 3, S-223 62 Lund, Sweden;(3) Institute of Medical Anatomy Dept. B, University of Copenhagen, Copenhagen, Denmark |
| |
| Abstract: | Summary The pineal complex of the three-spined stickleback (Gasterosteus aculeatus L.) was investigated by light and electron microscopy, as well as fluorescence histochemistry for demonstration of catecholamines and indolamines. The pineal complex of the stickleback consists of a pineal organ and a small parapineal organ situated on the left side of the pineal stalk. The pineal organ, including the entire stalk, is comprised mainly of ependymal-type interstitial cells and photoreceptor cells with well-developed outer segments. Both unmyelinated and myelinated nerve fibres are present in the pineal organ. Nerve tracts from the stalk enter the habenular and posterior commissures. A small bundle of nerve fibres connects the parapineal organ and the left habenular body. The presence of indolamines (5-HTP, 5-HT) was demonstrated in cell bodies of both the pineal body and the pineal stalk, and catecholaminergic nerve fibres surround the pineal complex. |
| |
| Keywords: | Epiphysis cerebri Parapineal organ Fluorescence histochemistry Electron microscopy Gasterosteus aculeatus L Teleostei |
| 本文献已被 SpringerLink 等数据库收录！ |
|
