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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. (Ed.) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. pp. 201
In: Norberg, B. et al. (Ed.) (2000). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. 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

Available in Authors 
    VLIZ: Proceedings [4209]

Keyword
    Marine

Authors  Top 
  • Hirai, T.
  • Oba, Y.
  • Yao, Z.X.
  • Chang, X.T.
  • Yoshiura, Y.
  • Kobayashi, T.
  • Nagahama, Y.

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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