Further Evidence for Breeding White-Beaked Dolphin (Lagenorhynchus albirostris) in Inner Danish Waters

Author:

Alstrup Aage Kristian Olsen12ORCID,Kinze Carl Chr.3,Kristensen Natacha Mia45,Jensen Trine Hammer4,Thøstesen Charlotte Bie5,Larsen Hanne Lyngholm4ORCID,Sønnichsen Karen Ankersen4,Kyhn Line A.67,Holm Thomas Eske7ORCID,Sigsgaard Jens Jørgen4,Pagh Sussie4ORCID

Affiliation:

1. Department of Nuclear Medicine and PET, Aarhus University Hospital, DK-8200 Aarhus, Denmark

2. Department for Clinical Medicine, Aarhus University, DK-8200 Aarhus, Denmark

3. Cetacean Atlas of Denmark, DK-1870 Frederiksberg, Denmark

4. Department of Chemistry and Bioscience, Section of Bioscience and Engineering Science, Aalborg University, DK-9220 Aalborg, Denmark

5. Fisheries and Maritime Museum, DK-6710 Esbjerg, Denmark

6. NIRAS, Kæhlersbakken, DK-4700 Næstved, Denmark

7. Department of Ecoscience, Aarhus University, DK-8000 Aarhus C, Denmark

Abstract

The white-beaked dolphin (Lagenorhynchus albirostris) is the second most frequently stranded cetacean species along the Danish coastline. The northern North Sea, the Skagerrak, the Kattegat and the Danish straits are part of the species distributional range. Here, we present eight incidents of breeding activity for the white-beaked dolphin in the inner Danish waters, reviewed from yearly reports made by the National Contingency Plan concerning strandings of marine mammals in Denmark from 2009 to 2023, Danish Wildlife Diseases Surveillance reports from 2014 to 2023 and the citizen science database Naturbasen in the period 2002 to 2023. Three pregnant females, three lactating females and one calf were found stranded in the inner Danish waters. Besides this, there have been live sightings of a female with a newborn calf. We conclude that the white-beaked dolphin is breeding in the inner Danish waters.

Funder

Danish Ministry of Environment

Publisher

MDPI AG

Reference35 articles.

1. Kinze, C.C. (2009). White-Beaked Dolphin: Lagenorhynchus albirostris, Elsevier Inc.

2. Parameters of growth and reproduction of white-beaked dolphins (Lagenorhynchus albirostris) from the North Sea;Galatius;Mar. Mammal Sci.,2013

3. Boas, J.E.V. (1894). Lærebog i Zoologien. Nærmest til Brug for Studerende og Lærere, P.G. Philipsens Forlag. [2nd ed.].

4. Danish whale records 1575–1991 (Mammalia, Cetacea);Kinze;Steenstrupia,1995

5. Cetacean stranding records along the Danish coastline: Records for the period 2008–2017 and a comparative review;Kinze;Lutra,2018

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