Observations of long-finned pilot whale (Globicephala melas) calves less than one year old, including neonates and a very recently born calf, in northern Norway

IF 1.9 4区地球科学 Q3 ECOLOGY

Polar Research Pub Date : 2023-09-28 DOI:10.33265/polar.v42.8027

Seán A. O'Callaghan

引用次数: 0

Abstract

Long-finned pilot whales (Globicephala melas) are a widespread, highly social deep-diving cetacean species ranging from the sub-tropics to the High Arctic. Information on this species’ life history at higher latitudes is limited. Opportunistic observations of pilot whale calves were made in the spring and summer of 2020, summer of 2022 and spring of 2023 from commercial whale-watching boat trips out of Andenes, on Andøya, about 300 km north of the Arctic Circle, in northern Norway. Eighteen observations were made of long-finned pilot whale groups where 14 neonates and 32 other calves less than one year old were present. Additionally, a neonate with deep foetal folds and a folded-over dorsal fin, indicating very recent birth, was observed within Bleik Canyon on 21 June 2020.

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在挪威北部，对未满一岁的长鳍领航鲸(Globicephala melas)幼鲸的观察，包括新生儿和刚出生的幼鲸

长鳍领航鲸(Globicephala melas)是一种广泛分布的，高度社会化的深海潜水鲸类物种，分布在亚热带到北极地区。关于这个物种在高纬度地区的生活史的信息是有限的。在2020年春夏、2022年夏夏和2023年春季，从挪威北部北极圈以北约300公里的Andøya的Andenes出发的商业观鲸船对导鲸幼崽进行了机会性观察。研究人员对长鳍领航鲸群进行了18次观察，其中有14只幼鲸和32只不到一岁的幼鲸。此外，2020年6月21日，在Bleik峡谷观察到一只新生儿，其胎儿褶皱深，背鳍折叠，表明新生儿出生不久。

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 地学-地球科学综合

CiteScore

3.20

自引率

5.30%

发文量

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.