Effects of sublethal cadmium on maturation and testosterone and 11-ketotestosterone production in vivo in the brook trout
| Autor: | G B Sangalang, H C Freeman |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Male
medicine.medical_specialty Secondary sex characteristic Trout Biology Tritium chemistry.chemical_compound Internal medicine Blood plasma Testis medicine Sexual maturity Animals Testosterone Carbon Radioisotopes Sexual Maturation Water Cell Biology General Medicine biology.organism_classification Ketosteroids Endocrinology Reproductive Medicine chemistry 11-Ketotestosterone Spermatogenesis Salmonidae Hormone Cadmium |
| Zdroj: | Biology of reproduction. 11(4) |
| ISSN: | 0006-3363 |
| Popis: | A double-isotope derivative assay using [“C]steroid tracers and [‘H]acetic anhydride as tritiating agent was used to determine testosterone and li-ketotestosterone levels in the blood plasma of male brook trout maintained in freshwater containing 1 ppb cadmium (Cd) and control fish during various stages of sexual maturation. Plasma testosterone and 1 1-ketotestosterone levels were correlated to approaching period of functional maturity in the control fish,reached a peak of 0.25 and 2.68 Mg/i00 ml plasma, respectively, and gradually declined with the onset of testicular regression. 11-Ketotestosterone levels (2.34-3.96 �g/100 ml) in Cd-treated fish were higher than in the controls (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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