Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic
1. Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have demonstrated the regulatory role of these parasites in free-ranging animals....
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Online Access: | http://hdl.handle.net/11250/2572832 https://doi.org/10.1111/1365-2435.13037 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/2572832 2023-05-15T15:02:16+02:00 Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic Carlsson, Anja M. Albon, Steve D. Coulson, Stephen James Ropstad, Erik Stien, Audun Wilson, Kenneth Loe, Leif Egil Veiberg, Vebjørn Irvine, Robert Justin 2018-04-19T09:25:05Z application/pdf http://hdl.handle.net/11250/2572832 https://doi.org/10.1111/1365-2435.13037 eng eng Norges forskningsråd: ? Egen institusjon: UNIS Andre: Macaulay Development Trust Andre: Amundsen Foundation Egen institusjon: Norwegian School of Veterinary Science Egen institusjon: Norwegian Institute for Nature Research (NINA) Functional Ecology. 2018, 32 (4), 1046-1056. urn:issn:0269-8463 http://hdl.handle.net/11250/2572832 https://doi.org/10.1111/1365-2435.13037 cristin:1580248 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 1046-1056 32 Functional Ecology 4 VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2018 ftunivmob https://doi.org/10.1111/1365-2435.13037 2021-09-23T20:16:10Z 1. Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have demonstrated the regulatory role of these parasites in free-ranging animals. 2. Previous work on Svalbard reindeer demonstrated that the experimental removal of the parasitic gastrointestinal nematode Ostertagia gruehneri transmitted in summer, improved reindeer fecundity, and that the species was capable of mediating a density-dependent reduction in fecundity. 3. The main coexisting parasitic nematode in the system, Marshallagia marshalli, exhibits a contrasting life history with low abundances in summer and an increase during the winter. Here, we examine the impact of this over-winter infection on fitness of female reindeer in the same population. 4. Worm burdens were removed at the start of the winter in October using a novel delayed-release anthelmintic bolus. Body mass and pregnancy rates were recorded for animals recaptured five (February) and seven (April) months later. The sub-set of treated animals recaptured in February was treated again with anthelmintic to remove newly acquired nematodes. The experiment was replicated over six winters (2006/2007-2011/2012) with a total of 343 recaptures, comprising 145 individual animals. 5. We found little effect of anthelmintic treatment on reindeer body mass or pregnancy rates during the winter, suggesting that nematode infection during this time does not significantly affect fitness of Svalbard reindeer. 6. Our studies are consistent with marked virulence nutritional trade-offs in this system and highlights the need to integrate studies of parasite co-infection, interspecific competition and community ecology to understand parasite impacts on hosts. body mass, fecundity, macroparasites, Marshallagia marshalli, Ostertagia gruehneri, reindeer Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic publishedVersion Article in Journal/Newspaper Arctic Svalbard svalbard reindeer Open archive Norwegian University of Life Sciences: Brage NMBU Arctic Svalbard Functional Ecology 32 4 1046 1056 |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Carlsson, Anja M. Albon, Steve D. Coulson, Stephen James Ropstad, Erik Stien, Audun Wilson, Kenneth Loe, Leif Egil Veiberg, Vebjørn Irvine, Robert Justin Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
1. Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have demonstrated the regulatory role of these parasites in free-ranging animals. 2. Previous work on Svalbard reindeer demonstrated that the experimental removal of the parasitic gastrointestinal nematode Ostertagia gruehneri transmitted in summer, improved reindeer fecundity, and that the species was capable of mediating a density-dependent reduction in fecundity. 3. The main coexisting parasitic nematode in the system, Marshallagia marshalli, exhibits a contrasting life history with low abundances in summer and an increase during the winter. Here, we examine the impact of this over-winter infection on fitness of female reindeer in the same population. 4. Worm burdens were removed at the start of the winter in October using a novel delayed-release anthelmintic bolus. Body mass and pregnancy rates were recorded for animals recaptured five (February) and seven (April) months later. The sub-set of treated animals recaptured in February was treated again with anthelmintic to remove newly acquired nematodes. The experiment was replicated over six winters (2006/2007-2011/2012) with a total of 343 recaptures, comprising 145 individual animals. 5. We found little effect of anthelmintic treatment on reindeer body mass or pregnancy rates during the winter, suggesting that nematode infection during this time does not significantly affect fitness of Svalbard reindeer. 6. Our studies are consistent with marked virulence nutritional trade-offs in this system and highlights the need to integrate studies of parasite co-infection, interspecific competition and community ecology to understand parasite impacts on hosts. body mass, fecundity, macroparasites, Marshallagia marshalli, Ostertagia gruehneri, reindeer Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic publishedVersion |
format |
Article in Journal/Newspaper |
author |
Carlsson, Anja M. Albon, Steve D. Coulson, Stephen James Ropstad, Erik Stien, Audun Wilson, Kenneth Loe, Leif Egil Veiberg, Vebjørn Irvine, Robert Justin |
author_facet |
Carlsson, Anja M. Albon, Steve D. Coulson, Stephen James Ropstad, Erik Stien, Audun Wilson, Kenneth Loe, Leif Egil Veiberg, Vebjørn Irvine, Robert Justin |
author_sort |
Carlsson, Anja M. |
title |
Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
title_short |
Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
title_full |
Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
title_fullStr |
Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
title_full_unstemmed |
Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic |
title_sort |
little impact of over-winter parasitism on a free-ranging ungulate in the high arctic |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2572832 https://doi.org/10.1111/1365-2435.13037 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard svalbard reindeer |
genre_facet |
Arctic Svalbard svalbard reindeer |
op_source |
1046-1056 32 Functional Ecology 4 |
op_relation |
Norges forskningsråd: ? Egen institusjon: UNIS Andre: Macaulay Development Trust Andre: Amundsen Foundation Egen institusjon: Norwegian School of Veterinary Science Egen institusjon: Norwegian Institute for Nature Research (NINA) Functional Ecology. 2018, 32 (4), 1046-1056. urn:issn:0269-8463 http://hdl.handle.net/11250/2572832 https://doi.org/10.1111/1365-2435.13037 cristin:1580248 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1111/1365-2435.13037 |
container_title |
Functional Ecology |
container_volume |
32 |
container_issue |
4 |
container_start_page |
1046 |
op_container_end_page |
1056 |
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1766334233486295040 |