Temperature and water availability induce chronic stress responses in zebra finches (Taeniopygia guttata).
| Autor: | Colominas-Ciuró R; Department of Vertebrate Zoology and Ecology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland., Kowalczewska A; Department of Vertebrate Zoology and Ecology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland., Jefimow M; Department of Animal Physiology and Neurobiology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland., Wojciechowski MS; Department of Vertebrate Zoology and Ecology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland. |
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| Jazyk: | angličtina |
| Zdroj: | The Journal of experimental biology [J Exp Biol] 2024 Nov 15; Vol. 227 (22). Date of Electronic Publication: 2024 Nov 20. |
| DOI: | 10.1242/jeb.247743 |
| Abstrakt: | Animals initiate physiological mechanisms to re-establish homeostasis following environmental stress. To understand how bird physiology responds to abiotic stress, we quantified changes in haematological markers of chronic stress response and body condition of male zebra finches (Taeniopygia guttata) acclimated for 18 weeks to hot and cool temperatures (daytime temperature: 40°C and 23°C) with water available ad libitum or restricted during half of the active phase. Ambient temperature induced greater chronic stress than restricted water availability. While cool compared with hot temperatures induced higher numbers of heterophils and heterophil to lymphocyte (H:L) ratios and reduced total leucocyte count, water restriction decreased the number of lymphocytes compared with water ad libitum. Body condition correlated with haematological parameters showing that birds with better condition had greater capacity to face environmental stress. Therefore, prolonged exposure to cool periods may result in chronic stress in zebra finches, especially if body condition is weakened. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2024. Published by The Company of Biologists Ltd.) |
| Databáze: | MEDLINE |
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