Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol
Plasma levels of the androgens testosterone (T), 11-ketotestosterone (OT), and 11-ketoandrostenedione (OA), the progestin 17α-hydroxy-20β-dihydroprogesterone (17,20-P), and 17β-estradiol (E 2 ) were measured by radioimmunoassay over the annual cycle in both adult male and female Arctic charr (Salvel...
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Canadian Science Publishing
1992
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Online Access: | http://dx.doi.org/10.1139/z92-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-006 |
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crcansciencepubl:10.1139/z92-006 2024-05-12T07:57:52+00:00 Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol Mayer, Ian Schmitz, Monika Borg, Bertil Schulz, Rüdiger 1992 http://dx.doi.org/10.1139/z92-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-006 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 70, issue 1, page 37-42 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1992 crcansciencepubl https://doi.org/10.1139/z92-006 2024-04-18T06:54:53Z Plasma levels of the androgens testosterone (T), 11-ketotestosterone (OT), and 11-ketoandrostenedione (OA), the progestin 17α-hydroxy-20β-dihydroprogesterone (17,20-P), and 17β-estradiol (E 2 ) were measured by radioimmunoassay over the annual cycle in both adult male and female Arctic charr (Salvelinus alpinus). In both males and females plasma T, OT, and OA all reached their highest levels during the early breeding season in September. The dominant androgen in maturing males was OT, which reached levels of ca. 90 ng/mL. Plasma levels of OT and OA, but not T, were considerably higher in males than in females; 17,20-P peaked later than the androgens, in November in males (14 ng/mL) and October in females (0.8 ng/mL). E 2 was always low or nondetectable in males. In maturing females E 2 peaked in August (3.5 ng/mL) before falling concomitantly with rising T levels. From January to April plasma levels of all measured steroids were low in both males and females. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Canadian Science Publishing Arctic Canadian Journal of Zoology 70 1 37 42 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Mayer, Ian Schmitz, Monika Borg, Bertil Schulz, Rüdiger Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Plasma levels of the androgens testosterone (T), 11-ketotestosterone (OT), and 11-ketoandrostenedione (OA), the progestin 17α-hydroxy-20β-dihydroprogesterone (17,20-P), and 17β-estradiol (E 2 ) were measured by radioimmunoassay over the annual cycle in both adult male and female Arctic charr (Salvelinus alpinus). In both males and females plasma T, OT, and OA all reached their highest levels during the early breeding season in September. The dominant androgen in maturing males was OT, which reached levels of ca. 90 ng/mL. Plasma levels of OT and OA, but not T, were considerably higher in males than in females; 17,20-P peaked later than the androgens, in November in males (14 ng/mL) and October in females (0.8 ng/mL). E 2 was always low or nondetectable in males. In maturing females E 2 peaked in August (3.5 ng/mL) before falling concomitantly with rising T levels. From January to April plasma levels of all measured steroids were low in both males and females. |
format |
Article in Journal/Newspaper |
author |
Mayer, Ian Schmitz, Monika Borg, Bertil Schulz, Rüdiger |
author_facet |
Mayer, Ian Schmitz, Monika Borg, Bertil Schulz, Rüdiger |
author_sort |
Mayer, Ian |
title |
Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
title_short |
Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
title_full |
Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
title_fullStr |
Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
title_full_unstemmed |
Seasonal endocrine changes in male and female Arctic charr ( Salvelinus alpinus ). I. Plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
title_sort |
seasonal endocrine changes in male and female arctic charr ( salvelinus alpinus ). i. plasma levels of three androgens, 17α-hydroxy-20β-dihydroprogesterone, and 17β-estradiol |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/z92-006 http://www.nrcresearchpress.com/doi/pdf/10.1139/z92-006 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Canadian Journal of Zoology volume 70, issue 1, page 37-42 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z92-006 |
container_title |
Canadian Journal of Zoology |
container_volume |
70 |
container_issue |
1 |
container_start_page |
37 |
op_container_end_page |
42 |
_version_ |
1798838256040673280 |