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Central monoaminergic changes accompany sex reversal in the saddleback wrasse
Larson, E.T.; Norris, D.O.; Grau, E.G.; Summers, C.H. (2000). Central monoaminergic changes accompany sex reversal in the saddleback wrasse, 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. 53-55
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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  • Larson, E.T.
  • Norris, D.O.
  • Grau, E.G.
  • Summers, C.H.
Abstract
    In teleosts with behavioral sex determination, the mechanisms by which external behavioral cues are converted to internal chemical cues that induce sex reversal are largely unknown. In the protogynous Hawaiian saddleback wrasse, Thalassoma duperrey, there is a marked reorganization of monoaminergic activity in preoptic area (POA) and raphe nucleus (RN) associated with behavioral sex reversal. Serotonergic activity drops in POA allowing an increase in noradrenergic activity. This event may trigger reorganization of the HPG axis. A marked decrease in serotonergic activity in RN may drive the transition from female to male sexual behaviors. This study suggests a link between monoamines and behavioral sex reversal
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