Diel pattern of corticosterone metabolites in Arctic barnacle goslings (Branta leucopsis) under continuous natural light
| Autor: | Jan Komdeur, Elisabeth Pschernig, Brigitte M. Weiß, Eva Millesi, Margje E. de Jong, Isabella B. R. Scheiber, Maarten J.J.E. Loonen |
|---|---|
| Přispěvatelé: | Komdeur lab, Arctic and Antarctic studies |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
BASE-LINE Physiology LONGSPURS CALCARIUS-LAPPONICUS GREYLAG GEESE lcsh:Medicine Biochemistry chemistry.chemical_compound Corticosterone Medicine and Health Sciences Metabolites lcsh:Science ENZYME-IMMUNOASSAY Melatonin photoperiodism Multidisciplinary biology Ecology Arctic Regions STRESS-INDUCED CORTICOSTERONE WHITE-CROWNED SPARROW Circadian Rhythm Crustaceans Circadian Rhythms FECAL GLUCOCORTICOID METABOLITES CIRCADIAN-RHYTHMS medicine.drug Research Article Branta leucopsis Arthropoda Excretion Zoology GEESE ANSER-ANSER Research and Analysis Methods LAPLAND LONGSPURS 03 medical and health sciences Anseriformes Zeitgeber medicine Animals Circadian rhythm Immunoassays Diel vertical migration lcsh:R Ecology and Environmental Sciences Organisms Biology and Life Sciences biology.organism_classification Invertebrates Hormones Enzyme Immunoassay 030104 developmental biology Metabolism Arctic chemistry Immunologic Techniques Daylight lcsh:Q Physiological Processes Chronobiology Barnacles |
| Zdroj: | PLoS One PLoS ONE, 12(8):e0182861. PUBLIC LIBRARY SCIENCE PLoS ONE PLoS ONE, Vol 12, Iss 8, p e0182861 (2017) |
| ISSN: | 1932-6203 |
| Popis: | Here we describe the excretion pattern of corticosterone metabolites collected from droppings in barnacle goslings (Branta leucopsis) raised under 24 hours of continuous natural light in the Arctic. In lower latitudes, circulating corticosterone peaks around waking and shows a nadir between midnight and 4:00, whereas the peak and nadir are time-delayed slightly when measuring corticosterone metabolites from droppings. Photoperiod, along with other environmental factors, helps to entrain an animal's endogenous rhythm to that of the natural world. North of the Arctic Circle, photoperiod may not be a reliable cue as light is continuously absent during the winter and continuously present during the summer. Here, for the first time, we used droppings to describe a 24-hour excretion pattern of corticosterone metabolites (CORTm). By applying circular statistics for dependent data, we found a diel rhythmic pattern even under continuous natural light. We discuss potential alternative 'Zeitgeber' that may function even in the polar regions, focusing on melatonin. We propose a line of research to measure melatonin non-invasively from droppings. We also provide a validation of the adopted enzyme immunoassay (EIA) that was originally developed for greylag geese. |
| Databáze: | OpenAIRE |
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