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Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin.

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Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin. / Bexton, Steve; Thompson, David; Brownlow, Andrew; Barley, Jason ; Milne, Ryan; Bidewell , Cornelia.

In: Aquatic Mammals, Vol. 38, No. 3, 2012, p. 229-240.

Research output: Contribution to journalArticle

Harvard

Bexton, S, Thompson, D, Brownlow, A, Barley, J, Milne, R & Bidewell , C 2012, 'Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin.' Aquatic Mammals, vol. 38, no. 3, pp. 229-240. https://doi.org/DOI 10.1578/AM.38.3.2012.229

APA

Bexton, S., Thompson, D., Brownlow, A., Barley, J., Milne, R., & Bidewell , C. (2012). Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin. Aquatic Mammals, 38(3), 229-240. https://doi.org/DOI 10.1578/AM.38.3.2012.229

Vancouver

Bexton S, Thompson D, Brownlow A, Barley J, Milne R, Bidewell C. Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin. Aquatic Mammals. 2012; 38(3):229-240. https://doi.org/DOI 10.1578/AM.38.3.2012.229

Author

Bexton, Steve ; Thompson, David ; Brownlow, Andrew ; Barley, Jason ; Milne, Ryan ; Bidewell , Cornelia. / Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin. In: Aquatic Mammals. 2012 ; Vol. 38, No. 3. pp. 229-240.

Bibtex - Download

@article{b2ef68f74825404c9a8f5d0e86edadb8,
title = "Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin.",
abstract = "Between June 2008 and December 2010, 76 dead pinnipeds were found on the coast of the United Kingdom with peculiar injuries consisting of a single continuous curvilinear skin laceration spi-ralling down the body. The skin and blubber had been sheared from the underlying fascia and, in many cases, the scapula also had been avulsed from the thoracic wall. Although previously unre-ported in the UK, similar distinctive lesions had been described in Canadian pinnipeds where they were referred to as corkscrew injuries. In the UK, identical injuries were seen in both native species of pinniped, with 43 harbor seals (Phoca vitulina) (57{\%}) and 26 grey seals (Halichoerus grypus) (34{\%}) affected, and seven carcasses (9{\%}) for which the species could not be determined. There were two apparent seasonal peaks in incidence; predominantly adult harbor seals were discovered during the summer and juvenile grey seals during the winter. Postmortem examinations of 20 harbor seals revealed they had been alive and healthy when the injuries were sustained, with no evidence of any underlying disease or disability. Based on the pathological findings, it was concluded that mortality was caused by a sudden traumatic event involving a strong rotational shearing force. The injuries were consistent with the animals being drawn through the ducted propellers of marine vessels and, in some cases, there was a direct cor-relation with the presence of work boats operating in the vicinity. This challenges the conclusions of a previous study in Canada that suggested natural predation by Greenland sharks (Somniosus micro-cephalus) was likely to be responsible for these injuries.",
author = "Steve Bexton and David Thompson and Andrew Brownlow and Jason Barley and Ryan Milne and Cornelia Bidewell",
year = "2012",
doi = "DOI 10.1578/AM.38.3.2012.229",
language = "English",
volume = "38",
pages = "229--240",
journal = "Aquatic Mammals",
issn = "0167-5427",
publisher = "European Association for Aquatic Mammals",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Unusual Mortality of Pinnipeds in the United Kingdom Associated with Helical (Corkscrew) Injuries of Anthropogenic Origin.

AU - Bexton, Steve

AU - Thompson, David

AU - Brownlow, Andrew

AU - Barley, Jason

AU - Milne, Ryan

AU - Bidewell , Cornelia

PY - 2012

Y1 - 2012

N2 - Between June 2008 and December 2010, 76 dead pinnipeds were found on the coast of the United Kingdom with peculiar injuries consisting of a single continuous curvilinear skin laceration spi-ralling down the body. The skin and blubber had been sheared from the underlying fascia and, in many cases, the scapula also had been avulsed from the thoracic wall. Although previously unre-ported in the UK, similar distinctive lesions had been described in Canadian pinnipeds where they were referred to as corkscrew injuries. In the UK, identical injuries were seen in both native species of pinniped, with 43 harbor seals (Phoca vitulina) (57%) and 26 grey seals (Halichoerus grypus) (34%) affected, and seven carcasses (9%) for which the species could not be determined. There were two apparent seasonal peaks in incidence; predominantly adult harbor seals were discovered during the summer and juvenile grey seals during the winter. Postmortem examinations of 20 harbor seals revealed they had been alive and healthy when the injuries were sustained, with no evidence of any underlying disease or disability. Based on the pathological findings, it was concluded that mortality was caused by a sudden traumatic event involving a strong rotational shearing force. The injuries were consistent with the animals being drawn through the ducted propellers of marine vessels and, in some cases, there was a direct cor-relation with the presence of work boats operating in the vicinity. This challenges the conclusions of a previous study in Canada that suggested natural predation by Greenland sharks (Somniosus micro-cephalus) was likely to be responsible for these injuries.

AB - Between June 2008 and December 2010, 76 dead pinnipeds were found on the coast of the United Kingdom with peculiar injuries consisting of a single continuous curvilinear skin laceration spi-ralling down the body. The skin and blubber had been sheared from the underlying fascia and, in many cases, the scapula also had been avulsed from the thoracic wall. Although previously unre-ported in the UK, similar distinctive lesions had been described in Canadian pinnipeds where they were referred to as corkscrew injuries. In the UK, identical injuries were seen in both native species of pinniped, with 43 harbor seals (Phoca vitulina) (57%) and 26 grey seals (Halichoerus grypus) (34%) affected, and seven carcasses (9%) for which the species could not be determined. There were two apparent seasonal peaks in incidence; predominantly adult harbor seals were discovered during the summer and juvenile grey seals during the winter. Postmortem examinations of 20 harbor seals revealed they had been alive and healthy when the injuries were sustained, with no evidence of any underlying disease or disability. Based on the pathological findings, it was concluded that mortality was caused by a sudden traumatic event involving a strong rotational shearing force. The injuries were consistent with the animals being drawn through the ducted propellers of marine vessels and, in some cases, there was a direct cor-relation with the presence of work boats operating in the vicinity. This challenges the conclusions of a previous study in Canada that suggested natural predation by Greenland sharks (Somniosus micro-cephalus) was likely to be responsible for these injuries.

U2 - DOI 10.1578/AM.38.3.2012.229

DO - DOI 10.1578/AM.38.3.2012.229

M3 - Article

VL - 38

SP - 229

EP - 240

JO - Aquatic Mammals

T2 - Aquatic Mammals

JF - Aquatic Mammals

SN - 0167-5427

IS - 3

ER -

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ID: 28913160