Seasonal endocrine changes in Baltic salmon, Salmo salar, immature parr and mature male parr. I. Plasma levels of five androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol

• Published in: Canadian Journal of Zoology
• Main Authors: Mayer, Ian, Lundqvist, Hans, Berglund, Ingemar, Schmitz, Monika, Schulz, Rüdiger, Borg, Bertil
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1990
• Subjects: Umeälven; Northern Sweden; Salmo salar
• Online Access: http://dx.doi.org/10.1139/z90-203; http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-203

Plasma levels of the androgens testosterone (T) and 11-ketotestosterone (OT), the progestin 17α-hydroxy-20β-dihydroprogesterone (17,20-P), and the estrogen 17β-estradiol (E 2 ) were measured by radioimmunoassay in monthly samples from immature parr (mostly females) and mature male parr of Baltic sal...