https://scholars.lib.ntu.edu.tw/handle/123456789/633335
標題: | Skin Cortisol and Acoustic Activity: Potential Tools to Evaluate Stress and Welfare in Captive Cetaceans | 作者: | Wong, Chung Hei Tsai, Ming An Ko, Fung Chi Wang, Jiann Hsiung Xue, Yi Jing WEI-CHENG YANG |
關鍵字: | acoustic activity; beluga whale; cortisol; Delphinapterus leucas; stress | 公開日期: | 1-五月-2023 | 卷: | 13 | 期: | 9 | 來源出版物: | Animals | 摘要: | As people’s focus broadens from animals on farms to zoos and aquaria, the field of welfare science and the public’s concern for animal welfare continue to grow. In captive animals, stress and its causes are topics of interest in welfare issues, and the identification of an objective method that can be used to assess animals’ stress as a physiological state is essential. Both behavioral and physiological parameters can be used as indicators in order to assess animal stress quantitatively. To validate this approach, acoustic activity and the sloughed scrape skin cortisol concentration were used to evaluate the animal welfare of captive beluga whales (Delphinapterus leucas). The acoustic activity (5 min at 10:00 am) of three captive D. leucas was routinely recorded by a transducer and analyzed using audio editing software. The calls were separated into three main categories: whistles, pulses, and combo calls. The sloughed scrape skin samples were collected non-invasively once a week from all three animals’ fluke and/or flipper. Cortisol was extracted using a modified skin steroid extraction technique, and detected via commercially available enzyme immunoassays. The results showed that the cortisol concentration increased by varying levels when the whales encountered the same event. In addition, the number and distribution of the calls changed along with the events. This indicated that the changes in the cortisol concentration and acoustic behavior may have reflected the fluctuations in the environment and body condition. Therefore, the scrape cortisol measurement and acoustic recordings could be used to monitor stress levels in captive beluga whales. We recommend that aquaria consider incorporating skin scrape cortisol and acoustic activity monitoring into their standards for animal welfare. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159134882&doi=10.3390%2fani13091521&partnerID=40&md5=efb4f716c35c098c0c608680fb9cd751 https://scholars.lib.ntu.edu.tw/handle/123456789/633335 |
ISSN: | 2076-2615 | DOI: | 10.3390/ani13091521 |
顯示於: | 獸醫學系 |
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