Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)
Psoroptes are a non-burrowing, ectoparasitic, mange-causing mite that has been documented in American bighorn sheep populations throughout the 19th and 20th centuries; however, it was not seen on Canadian bighorn sheep until 2006. The aim of this study was to determine the potential source of the Ps...
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2021-04-01
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doaj-c538d81266cb4ed89a4bc8872473a3d62021-04-22T13:38:42ZengElsevierInternational Journal for Parasitology: Parasites and Wildlife2213-22442021-04-0114273279Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)Adam M. Hering0Neil B. Chilton1Tasha Epp2Helen M. Schwantje3Frances Cassirer4Andrew Walker5Craig McLean6Prasobh Raveendran Thampy7Eryn Hanak8Peregrine Wolff9Mark Drew10Katherine D. Bardsley11Murray Woodbury12Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Dr., Saskatoon, Saskatchewan, S7N5B4, Canada; Corresponding author. Dept. of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 1540 Shasta place, Victoria, BC, V8S1X9, Canada.Department of Biology, College of Arts and Science, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N5E2, CanadaLarge Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Dr., Saskatoon, Saskatchewan, S7N5B4, CanadaBritish Columbia's Ministry of Forests, Lands, Natural Resource Operations, and Rural Development, 2080 Labieux Rd, Nanaimo, BC, V9T6J9, CanadaIdaho Department of Fish and Game, 3316 16th Street, Lewiston, ID, 83501, USABritish Columbia's Ministry of Forests, Lands, Natural Resource Operations, and Rural Development, 2080 Labieux Rd, Nanaimo, BC, V9T6J9, CanadaBritish Columbia's Ministry of Forests, Lands, Natural Resource Operations, and Rural Development, 2080 Labieux Rd, Nanaimo, BC, V9T6J9, CanadaDepartment of Biology, College of Arts and Science, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, S7N5E2, CanadaPulse Veterinary and Speciality in Edmonton, AB, CanadaNevada Department of Wildlife, 6980 Sierra Center Parkway, Suite 120, Reno, NV89511, USAIdaho Department of Fish and Game, 3316 16th Street, Lewiston, ID, 83501, USADepartment of Veterinary Sciences, Wyoming State Veterinary Laboratory, University of Wyoming, 1174 Snowy Range Road, Laramie, WY, 82070, USALarge Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Dr., Saskatoon, Saskatchewan, S7N5B4, CanadaPsoroptes are a non-burrowing, ectoparasitic, mange-causing mite that has been documented in American bighorn sheep populations throughout the 19th and 20th centuries; however, it was not seen on Canadian bighorn sheep until 2006. The aim of this study was to determine the potential source of the Psoroptes outbreak in Canadian bighorn sheep. Morphological and molecular analyses were used to compare mites recovered from outbreak-associated bighorn sheep, pet rabbits in Canada, and on historically infested bighorn sheep in the USA. The results revealed that Psoroptes acquired from the Canadian and outbreak-associated American bighorn sheep were morphologically more similar to those collected from rabbits than mites on historically infested bighorn sheep. Outer opisthosomal setae lengths measured an average of 81.7 μm (±7.7 μm) in outbreak associated bighorn mites, 88.9 μm (±12.0 μm) in rabbit mites and 151.2 μm (±16.6 μm) in historically infested bighorn mites. The opisthosomal lobe morphology of bighorn mites in the outbreak herds was also more similar to that of rabbit mites, previously described as P. cuniculi, than historically infested bighorn mites, which match previous descriptions of P. ovis. This finding was supported by DNA sequence data of the mitochondrial cytochrome B gene. This is the first report of Psoroptes of the rabbit ecotype on bighorn sheep. The morphological and molecular data therefore support the hypothesis that the source of Psoroptes outbreak in Canadian bighorn sheep represented a disease spillover event from rabbits rather than transmission from infested American bighorn sheep populations.http://www.sciencedirect.com/science/article/pii/S2213224421000316Bighorn sheepOryctolagus cuniculusOvis canadensisPsoroptesPsoroptes cuniculiPsoroptes ovis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Adam M. Hering Neil B. Chilton Tasha Epp Helen M. Schwantje Frances Cassirer Andrew Walker Craig McLean Prasobh Raveendran Thampy Eryn Hanak Peregrine Wolff Mark Drew Katherine D. Bardsley Murray Woodbury |
spellingShingle |
Adam M. Hering Neil B. Chilton Tasha Epp Helen M. Schwantje Frances Cassirer Andrew Walker Craig McLean Prasobh Raveendran Thampy Eryn Hanak Peregrine Wolff Mark Drew Katherine D. Bardsley Murray Woodbury Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) International Journal for Parasitology: Parasites and Wildlife Bighorn sheep Oryctolagus cuniculus Ovis canadensis Psoroptes Psoroptes cuniculi Psoroptes ovis |
author_facet |
Adam M. Hering Neil B. Chilton Tasha Epp Helen M. Schwantje Frances Cassirer Andrew Walker Craig McLean Prasobh Raveendran Thampy Eryn Hanak Peregrine Wolff Mark Drew Katherine D. Bardsley Murray Woodbury |
author_sort |
Adam M. Hering |
title |
Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) |
title_short |
Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) |
title_full |
Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) |
title_fullStr |
Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) |
title_full_unstemmed |
Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis) |
title_sort |
traceback of the psoroptes outbreak in british columbian bighorn sheep (ovis canadensis) |
publisher |
Elsevier |
series |
International Journal for Parasitology: Parasites and Wildlife |
issn |
2213-2244 |
publishDate |
2021-04-01 |
description |
Psoroptes are a non-burrowing, ectoparasitic, mange-causing mite that has been documented in American bighorn sheep populations throughout the 19th and 20th centuries; however, it was not seen on Canadian bighorn sheep until 2006. The aim of this study was to determine the potential source of the Psoroptes outbreak in Canadian bighorn sheep. Morphological and molecular analyses were used to compare mites recovered from outbreak-associated bighorn sheep, pet rabbits in Canada, and on historically infested bighorn sheep in the USA. The results revealed that Psoroptes acquired from the Canadian and outbreak-associated American bighorn sheep were morphologically more similar to those collected from rabbits than mites on historically infested bighorn sheep. Outer opisthosomal setae lengths measured an average of 81.7 μm (±7.7 μm) in outbreak associated bighorn mites, 88.9 μm (±12.0 μm) in rabbit mites and 151.2 μm (±16.6 μm) in historically infested bighorn mites. The opisthosomal lobe morphology of bighorn mites in the outbreak herds was also more similar to that of rabbit mites, previously described as P. cuniculi, than historically infested bighorn mites, which match previous descriptions of P. ovis. This finding was supported by DNA sequence data of the mitochondrial cytochrome B gene. This is the first report of Psoroptes of the rabbit ecotype on bighorn sheep. The morphological and molecular data therefore support the hypothesis that the source of Psoroptes outbreak in Canadian bighorn sheep represented a disease spillover event from rabbits rather than transmission from infested American bighorn sheep populations. |
topic |
Bighorn sheep Oryctolagus cuniculus Ovis canadensis Psoroptes Psoroptes cuniculi Psoroptes ovis |
url |
http://www.sciencedirect.com/science/article/pii/S2213224421000316 |
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