[MARMAM] new paper on pilot whale asphyxiation

IJsseldijk, L.L. (Lonneke) L.L.IJsseldijk at uu.nl
Thu Nov 19 13:14:38 PST 2015

Dear all,

The following paper came out today:

Fatal Asphyxiation in Two Long-Finned Pilot Whales (Globicephala melas) Caused by Common Soles (Solea solea).
By: Lonneke L. IJsseldijk, Mardik F. Leopold, Elisa L. Bravo Rebolledo, Rob Deaville, Jan Haelters, Jooske IJzer, Paul D. Jepson, Andrea Gröne
In: PLoS ONE 10(11): e0141951. doi:10.1371/journal.pone.0141951
Open access through: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141951

Abstract: Long-finned pilot whales (Globicephala melas) are rare visitors to the southern North Sea, but recently two individual strandings occurred on the Dutch coast. Both animals shared the same, unusual cause of death: asphyxiation from a common sole (Solea solea) stuck in their nasal cavity. This is a rare cause of death in cetaceans. Whilst asphyxiation has been reported in smaller odontocetes, there are no recent records of this occurring in Globicephala species. Here we report the stranding, necropsy and diet study results as well as discuss the unusual nature of this phenomenon. Flatfish are not a primary prey species for pilot whales and are rarely eaten by other cetaceans, such as harbour porpoises (Phocoena phocoena), in which there are several reports of asphyxiation due to airway obstruction by soles. This risk may be due to the fish’s flexible bodies which can enter small cavities either actively in an attempt to escape or passively due to the whale ‘coughing’ or ‘sneezing’ to rid itself of the blockage of the trachea. It is also possible that the fish enter the airways whilst the whale is re-articulating the larynx after trying to ingest large, oddly shaped prey. It is unlikely that the soles entered the airways after the death of the whales and we believe therefore that they are responsible for the death of these animals.

Please feel free to contact me for any additional questions or PDF requests.

Best wishes,
Lonneke IJsseldijk,
also on behalf of the other authors

Lonneke L. IJsseldijk, BSc
Project coördinator Cetaceans
Faculty of Veterinary Medicine, Utrecht University
Department of Pathobiology

T +31 30 253 5312, M +31 6 244 556 98
L.L.IJsseldijk at uu.nl
Yalelaan 1, PO Box 80158, 3508 TD Utrecht
The Netherlands

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