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The effects of induced triploidy on the reproductive physiology in the European sea bass, Dicentrarchus labrax
Felip, A.; Zanuy, S.; Carrillo, M.; Piferrer, F. (2000). The effects of induced triploidy on the reproductive physiology in the European sea bass, Dicentrarchus labrax, 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. 445
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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Keyword
    Marine/Coastal
Authors  Top 
  • Felip, A.
  • Zanuy, S.
  • Carrillo, M.
  • Piferrer, F.
Abstract
    Triploid sea bass were obtained and reared in duplicate groups under natural conditions. Macroscopic observation of the gonads showed marked effects in triploid females, which had rudimentary ovaries. Histological analyses revealed that adult diploid females had vitellogenic oocytes, while triploid ovaries contained mostly oogonia. In contrast, diploid and triploid males exhibited similar gonadal development, although no spermiating males were observed in triploids even at 4 years of age. Plasma levels of estradiol and testosterone were lower in triploid than in diploid females, while testosterone levels in males were similar in both ploidies.
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