Effects of short-term management stress and ACTH injections on plasma cortisol levels in cultured white sturgeon, Acipenser transmontanus
| Autor: | Kevin D. Laugero, Joseph J. Cech, Gary P. Moberg, J.M Belanger, SE Lankford, J.H Son, Serge I. Doroshov |
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| Rok vydání: | 2001 |
| Předmět: |
endocrine system
medicine.medical_specialty biology Adrenocorticotropic hormone Aquatic Science biology.organism_classification Fight-or-flight response Plasma cortisol Endocrinology Sturgeon Acipenser transmontanus Internal medicine Blood plasma medicine hormones hormone substitutes and hormone antagonists Management practices Hydrocortisone medicine.drug |
| Zdroj: | Aquaculture. 203:165-176 |
| ISSN: | 0044-8486 |
| Popis: | General management practices including capture, handling and transportation in fish hatcheries can induce a stress response indicated by a plasma cortisol increase in many species. However, this phenomenon is not well established in cultured white sturgeon ( Acipenser transmontanus ). We determined resting levels of cortisol and the cortisol responses to two management stressors and to exogenous adrenocorticotropic hormone (ACTH 1–24 ) injections in cannulated mature male white sturgeon. Mean resting cortisol level was 8.6 ng/ml and ranged over 5.8–12.8 ng/ml through a 22-h period. Water reduction and transportation+handling stressors elicited significant cortisol increases above pre-stress and post-stress levels. Exogenous ACTH 1–24 injections of 0.5 and 5.0 μM caused dose-dependent peak cortisol increases above those produced by either the water reduction or transportation+handling stressors. |
| Databáze: | OpenAIRE |
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