Lack of species specific primer effects of odours from female Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.)
Olsén, K.H.; Bjerselius, R.; Petersson, E.; Järvi, T.; Mayer, I.; Hedenskog, M. (2000). Lack of species specific primer effects of odours from female Atlantic salmon (Salmo salar L.) and brown trout (Salmo trutta L.), 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. 143
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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| Auteurs | | Top |
- Olsén, K.H.
- Bjerselius, R.
- Petersson, E.
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- Järvi, T.
- Mayer, I.
- Hedenskog, M.
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| Abstract |
The aim of the present study was to investigate the possible endocrine responses of mature male parr of Atlantic salmon and brown trout to odours from conspecific and heterospecific ovulated anadromous females. We exposed, in two successive spawning seasons, parr to a mix of ovarian fluid and urine. Exposed to either female odours salmon parr had significantly higher blood plasma concentrations of sex steroid hormones and volumes of strippable milt (not shown below) compared to parr exposed to control solution (0.9% NaCl). Brown trout male parr had significantly higher plasma levels of only 17 alpha ,20 beta -dihydroxy-4-pregnen-3-one (17,20 beta -P) after exposure to salmon odours compared to control males. Taken together, the results indicate that the potency of heterospecific stimuli to increase plasma sex hormone levels in male parr was as strong as stimuli from conspecific females. |
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