Local adaptation of an ectoparasite Ixodes uriae to its seabird host
In addition to reproductive rates and generation times, local parasite adaptation is predicted to be associated with relative host/parasite migration rates, parasite virulence and local resource levels. We tested for local parasite adaptation in a spatially structured natural host–parasite system wi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.417.9289 2023-05-15T15:44:58+02:00 Local adaptation of an ectoparasite Ixodes uriae to its seabird host Karen D. Mccoy Thierry Boulinier Solveig Schjørring Yannis Michalakis The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.417.9289 http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.417.9289 http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf co-evolution host–parasite interactions Ixodes uriae Rissa tridactyla tick text 2002 ftciteseerx 2016-01-08T03:46:48Z In addition to reproductive rates and generation times, local parasite adaptation is predicted to be associated with relative host/parasite migration rates, parasite virulence and local resource levels. We tested for local parasite adaptation in a spatially structured natural host–parasite system with fluctuating host resources. Using a cross-fostering design replicated over 2 years, we exchanged chicks of the Black-legged kittiwake (Rissa tridactyla) between subpopulations of its ectoparasite, the tick Ixodes uriae. We found evidence that ticks were adapted to their local hosts; ticks had higher success (capacity to continue to the next life stage) and shorter engorgement times on sympatric birds than on allopatric birds. However, infestation levels were similar between the resident and non-resident chicks in a nest, implying that ticks are unable to distinguish between good and bad hosts and that selection acts during tick engorgement. Hosts appeared to be locally maladapted to their parasites; growth rates tended to be lower for sympatric birds in the presence of parasites. However, we found no effect of host group on the T-cell immune response of chicks. Overall, the results seemed to depend on the environmental quality. When resources were low, local maladaptation was expressed in the host, but adaptation was not shown by the parasite. In the higher quality year, evidence for local parasite adaptation was found, but the host seemed to be able to compensate for the pathogenic effects of ticks. This suggests that virulence (pathogenic effect on host) and the reciprocal effects of the interaction can fluctuate depending on host environmental conditions. Text Black-legged Kittiwake rissa tridactyla Unknown |
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English |
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co-evolution host–parasite interactions Ixodes uriae Rissa tridactyla tick |
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co-evolution host–parasite interactions Ixodes uriae Rissa tridactyla tick Karen D. Mccoy Thierry Boulinier Solveig Schjørring Yannis Michalakis Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
topic_facet |
co-evolution host–parasite interactions Ixodes uriae Rissa tridactyla tick |
description |
In addition to reproductive rates and generation times, local parasite adaptation is predicted to be associated with relative host/parasite migration rates, parasite virulence and local resource levels. We tested for local parasite adaptation in a spatially structured natural host–parasite system with fluctuating host resources. Using a cross-fostering design replicated over 2 years, we exchanged chicks of the Black-legged kittiwake (Rissa tridactyla) between subpopulations of its ectoparasite, the tick Ixodes uriae. We found evidence that ticks were adapted to their local hosts; ticks had higher success (capacity to continue to the next life stage) and shorter engorgement times on sympatric birds than on allopatric birds. However, infestation levels were similar between the resident and non-resident chicks in a nest, implying that ticks are unable to distinguish between good and bad hosts and that selection acts during tick engorgement. Hosts appeared to be locally maladapted to their parasites; growth rates tended to be lower for sympatric birds in the presence of parasites. However, we found no effect of host group on the T-cell immune response of chicks. Overall, the results seemed to depend on the environmental quality. When resources were low, local maladaptation was expressed in the host, but adaptation was not shown by the parasite. In the higher quality year, evidence for local parasite adaptation was found, but the host seemed to be able to compensate for the pathogenic effects of ticks. This suggests that virulence (pathogenic effect on host) and the reciprocal effects of the interaction can fluctuate depending on host environmental conditions. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Karen D. Mccoy Thierry Boulinier Solveig Schjørring Yannis Michalakis |
author_facet |
Karen D. Mccoy Thierry Boulinier Solveig Schjørring Yannis Michalakis |
author_sort |
Karen D. Mccoy |
title |
Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
title_short |
Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
title_full |
Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
title_fullStr |
Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
title_full_unstemmed |
Local adaptation of an ectoparasite Ixodes uriae to its seabird host |
title_sort |
local adaptation of an ectoparasite ixodes uriae to its seabird host |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.417.9289 http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf |
genre |
Black-legged Kittiwake rissa tridactyla |
genre_facet |
Black-legged Kittiwake rissa tridactyla |
op_source |
http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.417.9289 http://gemi.mpl.ird.fr/PDF/McCoy.2002.EER.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766379326221058048 |