Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta
Thirty-seven adult female moose ( Alces alces) from 2 distinct but adjacent populations in Elk Island National Park (EINP), Alberta, Canada (19 in north EINP and 18 in south EINP), were fitted with mortality-sensing VHF radio-collars, and radio signals were acquired daily to ascertain mortality stat...
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crsagepubl:10.1177/0300985818823776 2024-10-13T14:01:04+00:00 Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta Shury, Todd K. Pybus, Margo J. Nation, Nick Cool, Normand L. Rettie, W. James 2019 http://dx.doi.org/10.1177/0300985818823776 http://journals.sagepub.com/doi/pdf/10.1177/0300985818823776 http://journals.sagepub.com/doi/full-xml/10.1177/0300985818823776 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license Veterinary Pathology volume 56, issue 3, page 476-485 ISSN 0300-9858 1544-2217 journal-article 2019 crsagepubl https://doi.org/10.1177/0300985818823776 2024-09-17T04:39:36Z Thirty-seven adult female moose ( Alces alces) from 2 distinct but adjacent populations in Elk Island National Park (EINP), Alberta, Canada (19 in north EINP and 18 in south EINP), were fitted with mortality-sensing VHF radio-collars, and radio signals were acquired daily to ascertain mortality status. At capture, serum, whole blood, and feces were collected; pregnancy was determined; teeth were aged by visual inspection; and a portion of liver was assessed by ultrasound examination. Postmortem examination was conducted on 20 suitable carcasses. Clinical pathological abnormalities, including eosinophilia, polycythemia, elevated levels of liver enzymes in serum, hemoglobin, hematocrit, and red blood cell distribution, and liver damage as seen in ultrasound images occurred only in moose from north EINP. Infected moose had 4.7 ± 4.8 Fascioloides magna flukes per liver (mean ± SD). The proportion of moose pregnant at capture was similar in both populations (74% in north EINP, 61% in south EINP). Proportional mortality was significantly higher in moose from the north (68%) than the south (32%). Fascioloides magna was associated as a cause of death in 7 of 14 (50%) moose in the north where cause of death was determined, while predation ( n = 1), acute toxemic syndrome ( n = 3), dystocia ( n = 1), and roadkill and undetermined causes ( n = 3) were additional causes of mortality. F. magna was associated with poor body condition and was a major cause of mortality in north EINP but not south EINP, despite very similar habitat and proximity, suggesting a significant role for these flukes in affecting health and viability of naturally infected moose populations. Article in Journal/Newspaper Alces alces SAGE Publications Canada Veterinary Pathology 56 3 476 485 |
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English |
description |
Thirty-seven adult female moose ( Alces alces) from 2 distinct but adjacent populations in Elk Island National Park (EINP), Alberta, Canada (19 in north EINP and 18 in south EINP), were fitted with mortality-sensing VHF radio-collars, and radio signals were acquired daily to ascertain mortality status. At capture, serum, whole blood, and feces were collected; pregnancy was determined; teeth were aged by visual inspection; and a portion of liver was assessed by ultrasound examination. Postmortem examination was conducted on 20 suitable carcasses. Clinical pathological abnormalities, including eosinophilia, polycythemia, elevated levels of liver enzymes in serum, hemoglobin, hematocrit, and red blood cell distribution, and liver damage as seen in ultrasound images occurred only in moose from north EINP. Infected moose had 4.7 ± 4.8 Fascioloides magna flukes per liver (mean ± SD). The proportion of moose pregnant at capture was similar in both populations (74% in north EINP, 61% in south EINP). Proportional mortality was significantly higher in moose from the north (68%) than the south (32%). Fascioloides magna was associated as a cause of death in 7 of 14 (50%) moose in the north where cause of death was determined, while predation ( n = 1), acute toxemic syndrome ( n = 3), dystocia ( n = 1), and roadkill and undetermined causes ( n = 3) were additional causes of mortality. F. magna was associated with poor body condition and was a major cause of mortality in north EINP but not south EINP, despite very similar habitat and proximity, suggesting a significant role for these flukes in affecting health and viability of naturally infected moose populations. |
format |
Article in Journal/Newspaper |
author |
Shury, Todd K. Pybus, Margo J. Nation, Nick Cool, Normand L. Rettie, W. James |
spellingShingle |
Shury, Todd K. Pybus, Margo J. Nation, Nick Cool, Normand L. Rettie, W. James Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
author_facet |
Shury, Todd K. Pybus, Margo J. Nation, Nick Cool, Normand L. Rettie, W. James |
author_sort |
Shury, Todd K. |
title |
Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
title_short |
Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
title_full |
Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
title_fullStr |
Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
title_full_unstemmed |
Fascioloides magna in Moose ( Alces alces) From Elk Island National Park, Alberta |
title_sort |
fascioloides magna in moose ( alces alces) from elk island national park, alberta |
publisher |
SAGE Publications |
publishDate |
2019 |
url |
http://dx.doi.org/10.1177/0300985818823776 http://journals.sagepub.com/doi/pdf/10.1177/0300985818823776 http://journals.sagepub.com/doi/full-xml/10.1177/0300985818823776 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Alces alces |
genre_facet |
Alces alces |
op_source |
Veterinary Pathology volume 56, issue 3, page 476-485 ISSN 0300-9858 1544-2217 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0300985818823776 |
container_title |
Veterinary Pathology |
container_volume |
56 |
container_issue |
3 |
container_start_page |
476 |
op_container_end_page |
485 |
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1812819633896423424 |