Detecting Ranavirus Presence In Vermont Through Avian Species And Edna
Amphibian populations are declining globally and are seriously threatened by emerging infectious diseases. Most local amphibian die-offs are caused by Ranavirus (Family: Iridoviridae), and these die-offs can contribute to the risk of local population extinction. Ranaviruses are not particularly well...
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ftunivermont:oai:scholarworks.uvm.edu:graddis-2663 2023-07-02T03:31:51+02:00 Detecting Ranavirus Presence In Vermont Through Avian Species And Edna Looney, Raymond 2023-01-01T08:00:00Z application/pdf https://scholarworks.uvm.edu/graddis/1662 https://scholarworks.uvm.edu/context/graddis/article/2663/viewcontent/Looney_uvm_0243N_11417.pdf en eng UVM ScholarWorks https://scholarworks.uvm.edu/graddis/1662 https://scholarworks.uvm.edu/context/graddis/article/2663/viewcontent/Looney_uvm_0243N_11417.pdf Graduate College Dissertations and Theses Disease Ecology Disease Modeling eDNA Ranavirus Biology text 2023 ftunivermont 2023-06-13T18:34:53Z Amphibian populations are declining globally and are seriously threatened by emerging infectious diseases. Most local amphibian die-offs are caused by Ranavirus (Family: Iridoviridae), and these die-offs can contribute to the risk of local population extinction. Ranaviruses are not particularly well studied, specifically, not much is known about their transmission dynamics and the impact that different transmission routes may have on amphibian population dynamics. The primary pathways for Ranavirus transmission are direct contact, necrophagy (consumption of dead individuals), and transmission through contact with virions in the water. My work specifically focuses on transmission through water and through contact with bird feathers, and its consequences for Ranavirus transmission to amphibian populations throughout the state of Vermont. I also investigated whether natural bodies of water that contain amphibian populations can test positive for Ranavirus and at what rate the virus persists across years. I investigated the ability for avian species to host Ranavirus on their wetted feathers by using the Canada goose (Branta canadensis) as a model study species. In the summer of 2019, 192 individuals of B. canadensis were swabbed along their wet abdomens to test for Ranavirus presence. To identify whether Ranavirus could be detected in natural bodies of water throughout Vermont, environmental DNA (eDNA) was collected from geese feathers and water sources at sites that had been previously tested for Ranavirus presence in amphibian populations. With quantitative PCR, viral DNA was extracted and amplified to test for the presence of Ranavirus. 13.9% of swab samples and 4.5% of filter samples tested positive for Ranavirus. Swab samples detected significantly more virus than filter samples (P<0.0005). Average viral load between samples was significantly higher in swab samples among sites (P<0.05). Ranavirus prevalence was estimated from a beta distribution and was significantly higher in swab samples (0.139, 95% CI ... Text Branta canadensis Canada Goose The University of Vermont: ScholarWorks @ UVM Canada |
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The University of Vermont: ScholarWorks @ UVM |
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English |
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Disease Ecology Disease Modeling eDNA Ranavirus Biology |
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Disease Ecology Disease Modeling eDNA Ranavirus Biology Looney, Raymond Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
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Disease Ecology Disease Modeling eDNA Ranavirus Biology |
description |
Amphibian populations are declining globally and are seriously threatened by emerging infectious diseases. Most local amphibian die-offs are caused by Ranavirus (Family: Iridoviridae), and these die-offs can contribute to the risk of local population extinction. Ranaviruses are not particularly well studied, specifically, not much is known about their transmission dynamics and the impact that different transmission routes may have on amphibian population dynamics. The primary pathways for Ranavirus transmission are direct contact, necrophagy (consumption of dead individuals), and transmission through contact with virions in the water. My work specifically focuses on transmission through water and through contact with bird feathers, and its consequences for Ranavirus transmission to amphibian populations throughout the state of Vermont. I also investigated whether natural bodies of water that contain amphibian populations can test positive for Ranavirus and at what rate the virus persists across years. I investigated the ability for avian species to host Ranavirus on their wetted feathers by using the Canada goose (Branta canadensis) as a model study species. In the summer of 2019, 192 individuals of B. canadensis were swabbed along their wet abdomens to test for Ranavirus presence. To identify whether Ranavirus could be detected in natural bodies of water throughout Vermont, environmental DNA (eDNA) was collected from geese feathers and water sources at sites that had been previously tested for Ranavirus presence in amphibian populations. With quantitative PCR, viral DNA was extracted and amplified to test for the presence of Ranavirus. 13.9% of swab samples and 4.5% of filter samples tested positive for Ranavirus. Swab samples detected significantly more virus than filter samples (P<0.0005). Average viral load between samples was significantly higher in swab samples among sites (P<0.05). Ranavirus prevalence was estimated from a beta distribution and was significantly higher in swab samples (0.139, 95% CI ... |
format |
Text |
author |
Looney, Raymond |
author_facet |
Looney, Raymond |
author_sort |
Looney, Raymond |
title |
Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
title_short |
Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
title_full |
Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
title_fullStr |
Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
title_full_unstemmed |
Detecting Ranavirus Presence In Vermont Through Avian Species And Edna |
title_sort |
detecting ranavirus presence in vermont through avian species and edna |
publisher |
UVM ScholarWorks |
publishDate |
2023 |
url |
https://scholarworks.uvm.edu/graddis/1662 https://scholarworks.uvm.edu/context/graddis/article/2663/viewcontent/Looney_uvm_0243N_11417.pdf |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Branta canadensis Canada Goose |
genre_facet |
Branta canadensis Canada Goose |
op_source |
Graduate College Dissertations and Theses |
op_relation |
https://scholarworks.uvm.edu/graddis/1662 https://scholarworks.uvm.edu/context/graddis/article/2663/viewcontent/Looney_uvm_0243N_11417.pdf |
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