Diurnal variations in the physiology of the goldfish,Carassius auratus
| Autor: | Victor L. de Vlaming, M Prack, George Delahunty, Mary Jo Vodicnik, Carl B. Schreck, James Olcese |
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| Rok vydání: | 1978 |
| Předmět: |
photoperiodism
medicine.medical_specialty Glycogen Period (gene) Physiology Biology chemistry.chemical_compound Endocrinology chemistry Internal medicine Plasma lipids Carassius auratus medicine General Earth and Planetary Sciences Serotonin Circadian rhythm General Agricultural and Biological Sciences General Environmental Science Hormone |
| Zdroj: | Journal of Interdisiplinary Cycle Research. 9:73-88 |
| ISSN: | 0022-1945 |
| DOI: | 10.1080/09291017809359626 |
| Popis: | Liver glycogen, liver lipid, liver triglycerides, plasma glucose, plasma total lipid, plasma cholesterol, plasma corticoids, hypothalamic serotonin and pituitary pro‐lactin levels were assayed at five times over a 24‐h period in Carassius auratus maintained under a specific photoperiod regime at various times throughout the year. Diurnal variations were observed in all parameters monitored. Daily variations of liver glycogen, plasma glucose, plasma lipid, plasma corticoids and hypothalamic serotonin were affected by time of feeding. Liver glycogen, plasma lipid and plasma corticoid levels were also affected by time of feeding. Diurnal variations of liver glycogen, plasma glucose and plasma lipid were influenced by light‐dark cycles. These data illustrate that feeding time, photoperiod and time of sacrifice are important considerations in the study of metabolic and hormonal parameters in fishes. |
| Databáze: | OpenAIRE |
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