Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State
Tissue perforation and penetration by dorsal fin spines of spotted ratfish (Hydrolagus colliei) were responsible for the death of seven harbor seals (Phoca vitulina) in Washington State (USA) between 2006 and 2011. In six animals, necropsy revealed spines or spine parts that had perforated the esoph...
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ftwestwashington:oai:cedar.wwu.edu:ssec-1191 2023-05-15T16:33:08+02:00 Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State Akmajian, Adrianne 2014-05-02T00:00:00Z https://cedar.wwu.edu/ssec/2014ssec/Day2/65 English eng Western CEDAR https://cedar.wwu.edu/ssec/2014ssec/Day2/65 This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University. Salish Sea Ecosystem Conference Terrestrial and Aquatic Ecology text 2014 ftwestwashington 2022-09-14T05:57:10Z Tissue perforation and penetration by dorsal fin spines of spotted ratfish (Hydrolagus colliei) were responsible for the death of seven harbor seals (Phoca vitulina) in Washington State (USA) between 2006 and 2011. In six animals, necropsy revealed spines or spine parts that had perforated the esophagus or stomach and migrated into vital tissues, resulting in hemothorax, pneumothorax, pleuritis, and peritonitis. In a seventh case, a ratfish spine was recovered from the mouth of a harbor seal euthanized due to clinical symptoms of encephalitis. Gross examination revealed an abscess within the left cerebrum, which was attributed to direct extension of inflammatory infiltrate associated with the ratfish spine. Between 2009 and 2011, spotted ratfish spines were also recovered from the head or neck region of three Steller sea lions (Eumetopias jubatus) and one California sea lion (Zalophus californianus). Ratfish-related trauma appears to be a novel mortality factor for harbor seals in Washington State and could be related to increased ratfish abundance and a shifting prey base for harbor seals. Text harbor seal Phoca vitulina Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) Pacific |
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Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) |
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ftwestwashington |
language |
English |
topic |
Terrestrial and Aquatic Ecology |
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Terrestrial and Aquatic Ecology Akmajian, Adrianne Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
topic_facet |
Terrestrial and Aquatic Ecology |
description |
Tissue perforation and penetration by dorsal fin spines of spotted ratfish (Hydrolagus colliei) were responsible for the death of seven harbor seals (Phoca vitulina) in Washington State (USA) between 2006 and 2011. In six animals, necropsy revealed spines or spine parts that had perforated the esophagus or stomach and migrated into vital tissues, resulting in hemothorax, pneumothorax, pleuritis, and peritonitis. In a seventh case, a ratfish spine was recovered from the mouth of a harbor seal euthanized due to clinical symptoms of encephalitis. Gross examination revealed an abscess within the left cerebrum, which was attributed to direct extension of inflammatory infiltrate associated with the ratfish spine. Between 2009 and 2011, spotted ratfish spines were also recovered from the head or neck region of three Steller sea lions (Eumetopias jubatus) and one California sea lion (Zalophus californianus). Ratfish-related trauma appears to be a novel mortality factor for harbor seals in Washington State and could be related to increased ratfish abundance and a shifting prey base for harbor seals. |
format |
Text |
author |
Akmajian, Adrianne |
author_facet |
Akmajian, Adrianne |
author_sort |
Akmajian, Adrianne |
title |
Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
title_short |
Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
title_full |
Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
title_fullStr |
Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
title_full_unstemmed |
Mortality Related to Spotted Ratfish (Hydrolagus colliei) in Pacific Harbor Seals (Phoca vitulina) in Washington State |
title_sort |
mortality related to spotted ratfish (hydrolagus colliei) in pacific harbor seals (phoca vitulina) in washington state |
publisher |
Western CEDAR |
publishDate |
2014 |
url |
https://cedar.wwu.edu/ssec/2014ssec/Day2/65 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
harbor seal Phoca vitulina |
genre_facet |
harbor seal Phoca vitulina |
op_source |
Salish Sea Ecosystem Conference |
op_relation |
https://cedar.wwu.edu/ssec/2014ssec/Day2/65 |
op_rights |
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University. |
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1766022841931661312 |