What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event?
On 9 June 2008, the UK's largest mass stranding event (MSE) of short-beaked common dolphins (Delphinus delphis) occurred in Falmouth Bay, Cornwall. At least 26 dolphins died, and a similar number was refloated/herded back to sea. On necropsy, all dolphins were in good nutritive status with empt...
Published in: | PLoS ONE |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | http://hdl.handle.net/10553/47513 https://doi.org/10.1371/journal.pone.0060953 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/47513 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
3105 Peces y fauna silvestre 310512 Ordenación y conservación de la fauna silvestre Bottle-Nosed Dolphins Porpoises Phocoena-Phocoena Gas-Bubble Lesions Tursiops-Truncatus Polychlorinated-Biphenyls Cetaceans Sonar Whales Mortality Infection Mass Stranding Event United Kingdom International naval exercises Acoustic event Disturbance event Naval activity |
spellingShingle |
3105 Peces y fauna silvestre 310512 Ordenación y conservación de la fauna silvestre Bottle-Nosed Dolphins Porpoises Phocoena-Phocoena Gas-Bubble Lesions Tursiops-Truncatus Polychlorinated-Biphenyls Cetaceans Sonar Whales Mortality Infection Mass Stranding Event United Kingdom International naval exercises Acoustic event Disturbance event Naval activity Jepson, Paul D. Deaville, Robert C. Acevedo Whitehouse, Karina Alethya Barnett, James E. F. Brownlow, Andrew C. Brownell, Robert L. Jr Clare, Frances C. Davison, Nicholas J. Law, Richard J. Loveridge, Jan Macgregor, Shaheed Karl Morris, Steven Murphy, Sinéad Penrose, Rod Perkins, Matthew W. Pinn, Eunice Seibel, Henrike Siebert, Ursula Sierra Pulpillo, Eva María Simpson, Victor Tasker, Mark L. Tregenza, Nick Cunningham, Andrew A. Fernández Rodríguez, Antonio Jesús What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
topic_facet |
3105 Peces y fauna silvestre 310512 Ordenación y conservación de la fauna silvestre Bottle-Nosed Dolphins Porpoises Phocoena-Phocoena Gas-Bubble Lesions Tursiops-Truncatus Polychlorinated-Biphenyls Cetaceans Sonar Whales Mortality Infection Mass Stranding Event United Kingdom International naval exercises Acoustic event Disturbance event Naval activity |
description |
On 9 June 2008, the UK's largest mass stranding event (MSE) of short-beaked common dolphins (Delphinus delphis) occurred in Falmouth Bay, Cornwall. At least 26 dolphins died, and a similar number was refloated/herded back to sea. On necropsy, all dolphins were in good nutritive status with empty stomachs and no evidence of known infectious disease or acute physical injury. Auditory tissues were grossly normal (26/26) but had microscopic haemorrhages (5/5) and mild otitis media (1/5) in the freshest cases. Five lactating adult dolphins, one immature male, and one immature female tested were free of harmful algal toxins and had low chemical pollutant levels. Pathological evidence of mud/seawater inhalation (11/26), local tide cycle, and the relative lack of renal myoglobinuria (26/26) suggested MSE onset on a rising tide between 06: 30 and 08: 21 hrs (9 June). Potential causes excluded or considered highly unlikely included infectious disease, gas/fat embolism, boat strike, by-catch, predator attack, foraging unusually close to shore, chemical or algal toxin exposure, abnormal weather/climatic conditions, and high-intensity acoustic inputs from seismic airgun arrays or natural sources (e. g., earthquakes). International naval exercises did occur in close proximity to the MSE with the most intense part of the exercises (including mid-frequency sonars) occurring four days before the MSE and resuming with helicopter exercises on the morning of the MSE. The MSE may therefore have been a "two-stage process'' where a group of normally pelagic dolphins entered Falmouth Bay and, after 3-4 days in/around the Bay, a second acoustic/disturbance event occurred causing them to strand en masse. This spatial and temporal association with the MSE, previous associations between naval activities and cetacean MSEs, and an absence of other identifiable factors known to cause cetacean MSEs, indicates naval activity to be the most probable cause of the Falmouth Bay MSE. 18 |
author2 |
APHA, Staff publications Cunningham, Andrew Sierra, Eva Brownlow, Andrew Fernandez, Antonio 7006738308 6603658704 6506351004 7201380416 55245783300 7003459182 35739986500 6603887563 7201502132 24390950600 7103228035 9242658900 7402779296 16304614400 15045436600 55671979900 35186469100 7004796609 15742962600 7005644383 7003560201 6508020171 57203051586 56673009900 27312113 1611658 1117583 1272041 1234697 309191 2046418 1082393 28212897 134608 5610087 2033192 4501533 6389719 3759596 28155541 2331723 1702869 2858089 145257 30396242 |
format |
Article in Journal/Newspaper |
author |
Jepson, Paul D. Deaville, Robert C. Acevedo Whitehouse, Karina Alethya Barnett, James E. F. Brownlow, Andrew C. Brownell, Robert L. Jr Clare, Frances C. Davison, Nicholas J. Law, Richard J. Loveridge, Jan Macgregor, Shaheed Karl Morris, Steven Murphy, Sinéad Penrose, Rod Perkins, Matthew W. Pinn, Eunice Seibel, Henrike Siebert, Ursula Sierra Pulpillo, Eva María Simpson, Victor Tasker, Mark L. Tregenza, Nick Cunningham, Andrew A. Fernández Rodríguez, Antonio Jesús |
author_facet |
Jepson, Paul D. Deaville, Robert C. Acevedo Whitehouse, Karina Alethya Barnett, James E. F. Brownlow, Andrew C. Brownell, Robert L. Jr Clare, Frances C. Davison, Nicholas J. Law, Richard J. Loveridge, Jan Macgregor, Shaheed Karl Morris, Steven Murphy, Sinéad Penrose, Rod Perkins, Matthew W. Pinn, Eunice Seibel, Henrike Siebert, Ursula Sierra Pulpillo, Eva María Simpson, Victor Tasker, Mark L. Tregenza, Nick Cunningham, Andrew A. Fernández Rodríguez, Antonio Jesús |
author_sort |
Jepson, Paul D. |
title |
What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
title_short |
What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
title_full |
What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
title_fullStr |
What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
title_full_unstemmed |
What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? |
title_sort |
what caused the uk's largest common dolphin (delphinus delphis) mass stranding event? |
publishDate |
2013 |
url |
http://hdl.handle.net/10553/47513 https://doi.org/10.1371/journal.pone.0060953 |
long_lat |
ENVELOPE(-59.688,-59.688,-62.366,-62.366) |
geographic |
Cornwall |
geographic_facet |
Cornwall |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
Plos One [ISSN 1932-6203], v. 8 (4) |
op_relation |
PLoS ONE 8 1932-6203 Scopus http://hdl.handle.net/10553/47513 doi:10.1371/journal.pone.0060953 2-s2.0-84876956277 000319077300004 e60953 WOS:000319077300004 E-6082-2010 E-7536-2010 H-9352-2015 P-6593-2018 G-3448-2015 Sí |
op_doi |
https://doi.org/10.1371/journal.pone.0060953 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
4 |
container_start_page |
e60953 |
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1766168031303565312 |
spelling |
ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/47513 2023-05-15T17:59:15+02:00 What Caused the UK's Largest Common Dolphin (Delphinus delphis) Mass Stranding Event? Jepson, Paul D. Deaville, Robert C. Acevedo Whitehouse, Karina Alethya Barnett, James E. F. Brownlow, Andrew C. Brownell, Robert L. Jr Clare, Frances C. Davison, Nicholas J. Law, Richard J. Loveridge, Jan Macgregor, Shaheed Karl Morris, Steven Murphy, Sinéad Penrose, Rod Perkins, Matthew W. Pinn, Eunice Seibel, Henrike Siebert, Ursula Sierra Pulpillo, Eva María Simpson, Victor Tasker, Mark L. Tregenza, Nick Cunningham, Andrew A. Fernández Rodríguez, Antonio Jesús APHA, Staff publications Cunningham, Andrew Sierra, Eva Brownlow, Andrew Fernandez, Antonio 7006738308 6603658704 6506351004 7201380416 55245783300 7003459182 35739986500 6603887563 7201502132 24390950600 7103228035 9242658900 7402779296 16304614400 15045436600 55671979900 35186469100 7004796609 15742962600 7005644383 7003560201 6508020171 57203051586 56673009900 27312113 1611658 1117583 1272041 1234697 309191 2046418 1082393 28212897 134608 5610087 2033192 4501533 6389719 3759596 28155541 2331723 1702869 2858089 145257 30396242 2013 http://hdl.handle.net/10553/47513 https://doi.org/10.1371/journal.pone.0060953 eng eng PLoS ONE 8 1932-6203 Scopus http://hdl.handle.net/10553/47513 doi:10.1371/journal.pone.0060953 2-s2.0-84876956277 000319077300004 e60953 WOS:000319077300004 E-6082-2010 E-7536-2010 H-9352-2015 P-6593-2018 G-3448-2015 Sí Plos One [ISSN 1932-6203], v. 8 (4) 3105 Peces y fauna silvestre 310512 Ordenación y conservación de la fauna silvestre Bottle-Nosed Dolphins Porpoises Phocoena-Phocoena Gas-Bubble Lesions Tursiops-Truncatus Polychlorinated-Biphenyls Cetaceans Sonar Whales Mortality Infection Mass Stranding Event United Kingdom International naval exercises Acoustic event Disturbance event Naval activity info:eu-repo/semantics/Article Article 2013 ftunivlaspalmas https://doi.org/10.1371/journal.pone.0060953 2021-04-27T23:10:12Z On 9 June 2008, the UK's largest mass stranding event (MSE) of short-beaked common dolphins (Delphinus delphis) occurred in Falmouth Bay, Cornwall. At least 26 dolphins died, and a similar number was refloated/herded back to sea. On necropsy, all dolphins were in good nutritive status with empty stomachs and no evidence of known infectious disease or acute physical injury. Auditory tissues were grossly normal (26/26) but had microscopic haemorrhages (5/5) and mild otitis media (1/5) in the freshest cases. Five lactating adult dolphins, one immature male, and one immature female tested were free of harmful algal toxins and had low chemical pollutant levels. Pathological evidence of mud/seawater inhalation (11/26), local tide cycle, and the relative lack of renal myoglobinuria (26/26) suggested MSE onset on a rising tide between 06: 30 and 08: 21 hrs (9 June). Potential causes excluded or considered highly unlikely included infectious disease, gas/fat embolism, boat strike, by-catch, predator attack, foraging unusually close to shore, chemical or algal toxin exposure, abnormal weather/climatic conditions, and high-intensity acoustic inputs from seismic airgun arrays or natural sources (e. g., earthquakes). International naval exercises did occur in close proximity to the MSE with the most intense part of the exercises (including mid-frequency sonars) occurring four days before the MSE and resuming with helicopter exercises on the morning of the MSE. The MSE may therefore have been a "two-stage process'' where a group of normally pelagic dolphins entered Falmouth Bay and, after 3-4 days in/around the Bay, a second acoustic/disturbance event occurred causing them to strand en masse. This spatial and temporal association with the MSE, previous associations between naval activities and cetacean MSEs, and an absence of other identifiable factors known to cause cetacean MSEs, indicates naval activity to be the most probable cause of the Falmouth Bay MSE. 18 Article in Journal/Newspaper Phocoena phocoena Universidad de Las Palmas de Gran Canaria: Acceda Cornwall ENVELOPE(-59.688,-59.688,-62.366,-62.366) PLoS ONE 8 4 e60953 |