Fatal Asphyxiation in Two Long-Finned Pilot Whales (Globicephala melas) Caused by Common Soles (Solea solea)

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 ra...

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Veröffentlicht in:PloS one 2015-11, Vol.10 (11), p.e0141951-e0141951
Hauptverfasser: IJsseldijk, Lonneke L, Leopold, Mardik F, Bravo Rebolledo, Elisa L, Deaville, Rob, Haelters, Jan, IJzer, Jooske, Jepson, Paul D, Gröne, Andrea
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container_end_page e0141951
container_issue 11
container_start_page e0141951
container_title PloS one
container_volume 10
creator IJsseldijk, Lonneke L
Leopold, Mardik F
Bravo Rebolledo, Elisa L
Deaville, Rob
Haelters, Jan
IJzer, Jooske
Jepson, Paul D
Gröne, Andrea
description 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.
doi_str_mv 10.1371/journal.pone.0141951
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subjects Airway Obstruction - mortality
Airway Obstruction - physiopathology
Animal behavior
Animals
Aquatic mammals
Asphyxia
Blockage
Cetacea
Death
Delphinidae
Dolphins & porpoises
Ecosystems
Fish
Flatfishes - physiology
Flexible bodies
Globicephala melas
Harbors
Larynx
Long-finned pilot whale
Marine mammals
Mortality
Nasal Cavity - physiology
Nose
Phocoena phocoena
Physiological aspects
Porpoises
Prey
Respiratory tract
Sneezing
Stranding
Studies
Trachea
Tursiops truncatus
Veterinary medicine
Whales
Whales & whaling
Whales, Pilot - physiology
Zoology
title Fatal Asphyxiation in Two Long-Finned Pilot Whales (Globicephala melas) Caused by Common Soles (Solea solea)
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