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Gonadal development and serum profiles of vitellogenin and steroid hormones in captive Pacific herring, Clupea pallasii, during the first and second reproductive cycles
Koya, Y.; Soyano, K.; Yamamoto, K.; Obana, H.; Matsubara, T. (2000). Gonadal development and serum profiles of vitellogenin and steroid hormones in captive Pacific herring, Clupea pallasii, during the first and second reproductive cycles, 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. 179
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., meer
In: International Symposium on the Reproductive Physiology of Fish. Museo Nacional de Ciencias Naturales. , meer
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  • Koya, Y.
  • Soyano, K.
  • Yamamoto, K.
  • Obana, H.
  • Matsubara, T.
Abstract
    Histological changes of gonads and serum profiles of sex steroids and vitellogenin (VTG) during the first and second reproductive cycles in the Pacific herring were examined. The results suggest that vitellogenesis is controlled by estradiol-17 beta (E2), spermatogenesis is promoted by 11-ketotestosterone (KT), and oocyte maturation and milt production is induced by 17 alpha ,20 beta -dihydroxy-4-pregnen-3-one (DHP).
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