Hormonal regulation of salmon-GnRH gene
Parhar, I.S. (2000). Hormonal regulation of salmon-GnRH gene, in: Norberg, B. et al. (Ed.) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. pp. 43-46
In: Norberg, B. et al. (2000). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish, 6. Department of Fisheries and Marine Biology, University of Bergen: Bergen. ISBN 82-7461-048-2. 499 pp., more
In: International Symposium on the Reproductive Physiology of Fish. Museo Nacional de Ciencias Naturales. , more
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- Parhar, I.S., correspondent
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| Abstract |
Gonadotropin-releasing hormone (GnRH), a highly conserved molecule across vertebrate species, plays a crucial role in the control of neuroendocrine events and reproductive functions. Recent advances in molecular biology techniques have contributed greatly to the isolation of three GnRH genes; each of these genes encodes only one molecular form of GnRH. In the primitive salmonids, GnRH cells of the terminal nerve, located halfway between the olfactory sac and the olfactory bulbs, share many cytological characteristics with GnRH cells of the nucleus olfactoretinalis, located at the caudalmost part of the olfactory bulb in advance cichlids like tilapia. The cells of the terminal nerve synthesize salmon-GnRH molecular form, gene expression of which is regulated by sex hormones and ontogenic development. The terminal nerve salmon-GnRH is speculated to play an important role in reproduction. |
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