Annual changes in plasma levels of cortisol and sex steroid hormones in male rainbow trout,Oncorhynchus mykiss
| العنوان: | Annual changes in plasma levels of cortisol and sex steroid hormones in male rainbow trout,Oncorhynchus mykiss |
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| المؤلفون: | Han Xiao-dong, Hou Ya-yi, Suzuki Yuzuru |
| المصدر: | Chinese Journal of Oceanology and Limnology. 19:217-221 |
| بيانات النشر: | Springer Science and Business Media LLC, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | photoperiodism, endocrine system, Sex Steroid Hormones, medicine.medical_specialty, animal structures, urogenital system, animal diseases, media_common.quotation_subject, Radioimmunoassay, Plasma levels, Biology, Oceanography, Endocrinology, Internal medicine, Seasonal breeder, medicine, Rainbow trout, Reproduction, Testosterone, Water Science and Technology, media_common |
| الوصف: | The profiles of cortisol, testosterone, 11-ketotestosterone and 17α, 20β-dihydroxy-4-pregnene-3-one in male rainbow trout reared under constant water temperature and natural photoperiod were determined by radioimmunoassay. Gonads of male rainbow trout reached maturity when the fish were two years old. Changes in the plasma levels of both sex steroid hormones and cortisol were closely related to the GSI. Plasma levels of testosterone, 11-ketotestosterone and 17α; 20β-dihydroxy 4-pregnene-3-one showed a clear peak in the annual breeding season, when the GSI reached their maxima. Plasma cortisol levels also showed clearly seasonal changes in both two- and three-year-old fish. The results suggest that the elevated plasma levels of cortisol may not just be due to stresses during the breeding season but have certain physiological functions in the reproduction of rainbow trout. |
| تدمد: | 1993-5005 0254-4059 |
| DOI: | 10.1007/bf02850657 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ab102f7a984759d9644583caa436b229 https://doi.org/10.1007/bf02850657 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........ab102f7a984759d9644583caa436b229 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19935005 02544059 |
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| DOI: | 10.1007/bf02850657 |