Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska
Emperor Geese (Anser canagicus) are iconic waterfowl endemic to Alaska and adjacent areas of northeastern Russia that are considered to be near threatened by the International Union for Conservation. This species has been identified as harboring diverse viruses and parasites which have, at times, be...
Published in: | International Journal for Parasitology: Parasites and Wildlife |
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ftpubmed:oai:pubmedcentral.nih.gov:8397833 2023-05-15T17:05:38+02:00 Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska Ramey, Andrew M. Buchheit, Raymond M. Uher-Koch, Brian D. Reed, John A. Pacheco, M. Andreína Escalante, Ananias A. Schmutz, Joel A. 2021-08-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8397833/ https://doi.org/10.1016/j.ijppaw.2021.08.006 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8397833/ http://dx.doi.org/10.1016/j.ijppaw.2021.08.006 https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). CC-BY Int J Parasitol Parasites Wildl Article Text 2021 ftpubmed https://doi.org/10.1016/j.ijppaw.2021.08.006 2021-09-05T00:50:29Z Emperor Geese (Anser canagicus) are iconic waterfowl endemic to Alaska and adjacent areas of northeastern Russia that are considered to be near threatened by the International Union for Conservation. This species has been identified as harboring diverse viruses and parasites which have, at times, been associated with disease in other avian taxa. To better assess if disease represents a vulnerability for Emperor Geese breeding on the Yukon-Kuskokwim Delta, Alaska, we evaluated if haemosporidian parasites were associated with decreased mass or survival among adult female nesting birds captured during 2006–2016. Through molecular analyses, we detected genetically diverse Leucocytozoon, Haemoproteus, and Plasmodium parasites in 28%, 1%, and 1% of 607 blood samples screened in triplicate, respectively. Using regression analysis, we found evidence for a small effect of Leucocytozoon infection on the mass of incubating adult female Emperor Geese. The estimated mass of infected individuals was approximately 43 g (95% CI: 20–67 g), or approximately 2%, less than uninfected birds when captured during the second half of incubation (days 11–25). We did not, however, find support for an effect of Leucocytozoon infection on survival of adult female nesting Emperor Geese using a multi-state hidden Markov framework to analyze mark-resight and recapture data. Using parasite mitochondrial DNA cytochrome b sequences, we identified 23 haplotypes among infected Emperor Geese. Leucocytozoon haplotypes clustered into three phylogenetically supported clades designated as ‘L. simondi clade A’, ‘L. simondi clade B’, and ‘other Leucocytozoon’. We did not find evidence that parasites assigned to any of these clades were associated with differential mass measures among nesting adult female Emperor Geese. Collectively, our results provide negligible evidence for Leucocytozoon parasites as causing detrimental effects to adult female Emperor Geese breeding on the Yukon-Kuskokwim Delta. Text Kuskokwim Alaska Yukon PubMed Central (PMC) Yukon International Journal for Parasitology: Parasites and Wildlife 16 103 112 |
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Article Ramey, Andrew M. Buchheit, Raymond M. Uher-Koch, Brian D. Reed, John A. Pacheco, M. Andreína Escalante, Ananias A. Schmutz, Joel A. Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
topic_facet |
Article |
description |
Emperor Geese (Anser canagicus) are iconic waterfowl endemic to Alaska and adjacent areas of northeastern Russia that are considered to be near threatened by the International Union for Conservation. This species has been identified as harboring diverse viruses and parasites which have, at times, been associated with disease in other avian taxa. To better assess if disease represents a vulnerability for Emperor Geese breeding on the Yukon-Kuskokwim Delta, Alaska, we evaluated if haemosporidian parasites were associated with decreased mass or survival among adult female nesting birds captured during 2006–2016. Through molecular analyses, we detected genetically diverse Leucocytozoon, Haemoproteus, and Plasmodium parasites in 28%, 1%, and 1% of 607 blood samples screened in triplicate, respectively. Using regression analysis, we found evidence for a small effect of Leucocytozoon infection on the mass of incubating adult female Emperor Geese. The estimated mass of infected individuals was approximately 43 g (95% CI: 20–67 g), or approximately 2%, less than uninfected birds when captured during the second half of incubation (days 11–25). We did not, however, find support for an effect of Leucocytozoon infection on survival of adult female nesting Emperor Geese using a multi-state hidden Markov framework to analyze mark-resight and recapture data. Using parasite mitochondrial DNA cytochrome b sequences, we identified 23 haplotypes among infected Emperor Geese. Leucocytozoon haplotypes clustered into three phylogenetically supported clades designated as ‘L. simondi clade A’, ‘L. simondi clade B’, and ‘other Leucocytozoon’. We did not find evidence that parasites assigned to any of these clades were associated with differential mass measures among nesting adult female Emperor Geese. Collectively, our results provide negligible evidence for Leucocytozoon parasites as causing detrimental effects to adult female Emperor Geese breeding on the Yukon-Kuskokwim Delta. |
format |
Text |
author |
Ramey, Andrew M. Buchheit, Raymond M. Uher-Koch, Brian D. Reed, John A. Pacheco, M. Andreína Escalante, Ananias A. Schmutz, Joel A. |
author_facet |
Ramey, Andrew M. Buchheit, Raymond M. Uher-Koch, Brian D. Reed, John A. Pacheco, M. Andreína Escalante, Ananias A. Schmutz, Joel A. |
author_sort |
Ramey, Andrew M. |
title |
Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
title_short |
Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
title_full |
Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
title_fullStr |
Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
title_full_unstemmed |
Negligible evidence for detrimental effects of Leucocytozoon infections among Emperor Geese (Anser canagicus) breeding on the Yukon-Kuskokwim Delta, Alaska |
title_sort |
negligible evidence for detrimental effects of leucocytozoon infections among emperor geese (anser canagicus) breeding on the yukon-kuskokwim delta, alaska |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8397833/ https://doi.org/10.1016/j.ijppaw.2021.08.006 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Kuskokwim Alaska Yukon |
genre_facet |
Kuskokwim Alaska Yukon |
op_source |
Int J Parasitol Parasites Wildl |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8397833/ http://dx.doi.org/10.1016/j.ijppaw.2021.08.006 |
op_rights |
https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.ijppaw.2021.08.006 |
container_title |
International Journal for Parasitology: Parasites and Wildlife |
container_volume |
16 |
container_start_page |
103 |
op_container_end_page |
112 |
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1766060324455186432 |