Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades
The prevalence of intestinal ulcers and parasites was investigated in 2172 grey seals ( Halichoerus grypus ) collected in the Baltic Sea and 49 grey seals collected outside the Baltic Sea (i.e., the Atlantic). An increase in frequency of ileocaeco-colonic ulcers was observed in the early 1980s, foll...
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ftdoajarticles:oai:doaj.org/article:2e000ba590334eb1996fe6c09c92ed99 2023-05-15T15:56:00+02:00 Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades Bäcklin Britt-Marie Persson Sara Faxneld Suzanne Rigét F. Frank Roos M. Anna 2021-10-01T00:00:00Z https://doi.org/10.3390/ani11102968 https://doaj.org/article/2e000ba590334eb1996fe6c09c92ed99 EN eng MDPI AG https://www.mdpi.com/2076-2615/11/10/2968 https://doaj.org/toc/2076-2615 doi:10.3390/ani11102968 2076-2615 https://doaj.org/article/2e000ba590334eb1996fe6c09c92ed99 Animals, Vol 11, Iss 2968, p 2968 (2021) intestinal lesions acanthocephalan parasites herring guillemot Baltic Sea Baltic seal Veterinary medicine SF600-1100 Zoology QL1-991 article 2021 ftdoajarticles https://doi.org/10.3390/ani11102968 2022-12-31T15:24:09Z The prevalence of intestinal ulcers and parasites was investigated in 2172 grey seals ( Halichoerus grypus ) collected in the Baltic Sea and 49 grey seals collected outside the Baltic Sea (i.e., the Atlantic). An increase in frequency of ileocaeco-colonic ulcers was observed in the early 1980s, followed by a decrease in the mid-1990s. At the same time, there was an increase followed by a decrease in brominated flame retardants, Perfluorooctanesulfonic acid (PFOS) and cadmium levels in herring ( Clupea harengus ), the most common prey item in Baltic grey seal diet, as well as in another top predator in the Baltic, the common guillemot ( Uria aalge ). The frequency of intestinal ulcers was significantly related to the intensity of acanthocephalan parasites, the age of the seal and the region of the Baltic Sea. Perforation of the intestinal wall was the cause of death in 26 of the investigated Baltic grey seals. In contrast, none of the investigated Atlantic grey seals had intestinal ulcers. They showed a thin colonic wall and very few acanthocephalan parasites. The high prevalence of intestinal ulcers and the high parasite intensity appear to be unique to the Baltic population of grey seals. Article in Journal/Newspaper common guillemot Uria aalge uria Directory of Open Access Journals: DOAJ Articles Animals 11 10 2968 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
intestinal lesions acanthocephalan parasites herring guillemot Baltic Sea Baltic seal Veterinary medicine SF600-1100 Zoology QL1-991 |
spellingShingle |
intestinal lesions acanthocephalan parasites herring guillemot Baltic Sea Baltic seal Veterinary medicine SF600-1100 Zoology QL1-991 Bäcklin Britt-Marie Persson Sara Faxneld Suzanne Rigét F. Frank Roos M. Anna Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
topic_facet |
intestinal lesions acanthocephalan parasites herring guillemot Baltic Sea Baltic seal Veterinary medicine SF600-1100 Zoology QL1-991 |
description |
The prevalence of intestinal ulcers and parasites was investigated in 2172 grey seals ( Halichoerus grypus ) collected in the Baltic Sea and 49 grey seals collected outside the Baltic Sea (i.e., the Atlantic). An increase in frequency of ileocaeco-colonic ulcers was observed in the early 1980s, followed by a decrease in the mid-1990s. At the same time, there was an increase followed by a decrease in brominated flame retardants, Perfluorooctanesulfonic acid (PFOS) and cadmium levels in herring ( Clupea harengus ), the most common prey item in Baltic grey seal diet, as well as in another top predator in the Baltic, the common guillemot ( Uria aalge ). The frequency of intestinal ulcers was significantly related to the intensity of acanthocephalan parasites, the age of the seal and the region of the Baltic Sea. Perforation of the intestinal wall was the cause of death in 26 of the investigated Baltic grey seals. In contrast, none of the investigated Atlantic grey seals had intestinal ulcers. They showed a thin colonic wall and very few acanthocephalan parasites. The high prevalence of intestinal ulcers and the high parasite intensity appear to be unique to the Baltic population of grey seals. |
format |
Article in Journal/Newspaper |
author |
Bäcklin Britt-Marie Persson Sara Faxneld Suzanne Rigét F. Frank Roos M. Anna |
author_facet |
Bäcklin Britt-Marie Persson Sara Faxneld Suzanne Rigét F. Frank Roos M. Anna |
author_sort |
Bäcklin Britt-Marie |
title |
Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
title_short |
Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
title_full |
Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
title_fullStr |
Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
title_full_unstemmed |
Temporal and Geographical Variation of Intestinal Ulcers in Grey Seals ( Halichoerus grypus ) and Environmental Contaminants in Baltic Biota during Four Decades |
title_sort |
temporal and geographical variation of intestinal ulcers in grey seals ( halichoerus grypus ) and environmental contaminants in baltic biota during four decades |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/ani11102968 https://doaj.org/article/2e000ba590334eb1996fe6c09c92ed99 |
genre |
common guillemot Uria aalge uria |
genre_facet |
common guillemot Uria aalge uria |
op_source |
Animals, Vol 11, Iss 2968, p 2968 (2021) |
op_relation |
https://www.mdpi.com/2076-2615/11/10/2968 https://doaj.org/toc/2076-2615 doi:10.3390/ani11102968 2076-2615 https://doaj.org/article/2e000ba590334eb1996fe6c09c92ed99 |
op_doi |
https://doi.org/10.3390/ani11102968 |
container_title |
Animals |
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11 |
container_issue |
10 |
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2968 |
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1766391487611797504 |