Seasonality of social behaviour among immature belugas (Delphinapterus leucas) in managed care

IF 1.9 4区 地球科学 Q3 ECOLOGY Polar Research Pub Date : 2021-07-12 DOI:10.33265/POLAR.V40.5498
J. R. Ham, Malin K. Lilley, Malin R. Miller, H. Hill
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引用次数: 7

Abstract

Belugas (Delphinapterus leucas) in managed care have been reported to show seasonal variation in socio-sexual behaviour, hormone levels and respiration rates; however, little is known about the social interactions of wild belugas when they are not in summer, near-shore congregations. To better understand if belugas show seasonal variation in social interactions, this study recorded the behaviour of 10 belugas (five females, five males, ranging from birth to 10 years of age) housed in managed care. Social interactions typically peaked in the summer months but persisted at very low levels during the rest of the year. Seasonal variation was most dramatic for socio-sexual behaviour but was generally mirrored in pattern by agonistic and affiliative interactions. Subjects closer to maturity displayed more seasonal variation than younger subjects, and males displayed more seasonal variation compared to females. The peak in social interactions found in this study aligns rather closely with wild belugas’ summer, near-shore congregations, where belugas have increased opportunities for socializing. Although belugas in managed care do not experience a seasonal change in habitat, they do show seasonal changes in social behaviour, which are likely driven by seasonal fluctuations in hormone levels. It is therefore expected that wild beluga populations would show similar behavioural patterns if they were observed throughout the remainder of the year. This research has applications for belugas in managed care and may provide a framework for understanding the social behaviour of wild belugas.
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管理护理中未成熟白鲸(Delphinapterus leucas)社会行为的季节性
据报道,在管理护理中的白鳍豚在社会性行为、激素水平和呼吸频率方面表现出季节性变化;然而,人们对野生白鲸在夏季不在岸边集会时的社会互动知之甚少。为了更好地了解白鲸在社会交往中是否表现出季节性变化,这项研究记录了10只白鲸(5只雌性,5只雄性,从出生到10岁不等)的行为。社交互动通常在夏季达到高峰,但在今年剩下的时间里一直处于非常低的水平。社会性行为的季节性变化最为显著,但通常反映在痛苦和附属互动的模式中。与年轻受试者相比,接近成熟的受试者表现出更多的季节变化,与女性相比,男性表现出更大的季节变化。这项研究中发现的社交互动高峰与野生白鲸的夏季近岸聚会非常吻合,在那里白鲸有更多的社交机会。尽管接受管理护理的白鲸不会经历栖息地的季节性变化,但它们确实表现出社会行为的季节性改变,这可能是由激素水平的季节性波动驱动的。因此,如果在今年剩下的时间里观察到野生白鲸种群,预计它们将表现出类似的行为模式。这项研究在管理护理中对白鲸有应用,并可能为理解野生白鲸的社会行为提供一个框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Polar Research
Polar Research 地学-地球科学综合
CiteScore
3.20
自引率
5.30%
发文量
22
审稿时长
>12 weeks
期刊介绍: Since 1982, Polar Research has been the international, peer-reviewed journal of the Norwegian Polar Institute, Norway''s central institution for research, environmental monitoring and mapping of the polar regions. Aiming to promote the exchange of scientific knowledge about the Arctic and Antarctic across disciplinary boundaries, Polar Research serves an international community of researchers and managers. As an open-access journal, Polar Research makes its contents freely available to the general public. Original primary research papers comprise the mainstay of Polar Research. Review articles, brief research notes, letters to the editor and book reviews are also included. Special issues are published from time to time. The scope of Polar Research encompasses research in all scientific disciplines relevant to the polar regions. These include, but are not limited to, the subfields of biology, ecology, geology, oceanography, glaciology and atmospheric science. Submissions from the social sciences and those focusing on polar management and policy issues are welcome. Contributions about Antarctica are particularly encouraged.
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