Putative gonadotropin receptors in tilapia (Oreochromis niloticus) gonads: cDNA cloning and expression during oogenesis
Hirai, T.; Oba, Y.; Yao, Z.X.; Chang, X.T.; Yoshiura, Y.; Kobayashi, T.; Nagahama, Y. (2000). Putative gonadotropin receptors in tilapia (Oreochromis niloticus) gonads: cDNA cloning and expression during oogenesis, in: Norberg, B. et al. 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: pp. 201
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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| Keywords |
Oreochromis niloticus (Linnaeus, 1758) [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Hirai, T.
- Oba, Y.
- Yao, Z.X.
- Chang, X.T.
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- Yoshiura, Y.
- Kobayashi, T.
- Nagahama, Y.
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| Abstract |
Two types of cDNA closely related to mammalian GTH receptors have been cloned from tilapia (O. niloticus) testis. These two cDNAs, named tGTH-RI and tGTH-RII, encode 701 and 693 amino acids, respectively. Northern blot analyses at different stages of ovarian follicler development revealed that tGTH-RI mRNA was largely expressed in early-vitellogenic follicles. In contrast, tGTH-RII was predominantly expressed in late-vitellogenic and postvitellogenic follicles. These results suggest that the two GTH receptors should play different roles in tilapia oogenesis. |
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