Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system
SUMMARY Larval inhibition is a common strategy of Trichostrongylidae nematodes that may increase survival of larvae during unfavourable periods and concentrate egg production when conditions are favourable for development and transmission. We investigated the propensity for larval inhibition in a po...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0031182012000601 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012000601 |
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crcambridgeupr:10.1017/s0031182012000601 2024-06-16T07:37:28+00:00 Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system HOAR, BRYANNE M. EBERHARDT, ALEXANDER G. KUTZ, SUSAN J. 2012 http://dx.doi.org/10.1017/s0031182012000601 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012000601 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 139, issue 10, page 1339-1345 ISSN 0031-1820 1469-8161 journal-article 2012 crcambridgeupr https://doi.org/10.1017/s0031182012000601 2024-05-22T12:56:37Z SUMMARY Larval inhibition is a common strategy of Trichostrongylidae nematodes that may increase survival of larvae during unfavourable periods and concentrate egg production when conditions are favourable for development and transmission. We investigated the propensity for larval inhibition in a population of Ostertagia gruehneri, the most common gastrointestinal Trichostrongylidae nematode of Rangifer tarandus . Initial experimental infections of 4 reindeer with O. gruehneri sourced from the Bathurst caribou herd in Arctic Canada suggested that the propensity for larval inhibition was 100%. In the summer of 2009 we infected 12 additional reindeer with the F 1 and F 2 generations of O. gruehneri sourced from the previously infected reindeer to further investigate the propensity of larval inhibition. The reindeer were divided into 2 groups and half were infected before the summer solstice (17 June) and half were infected after the solstice (16 July). Reindeer did not shed eggs until March 2010, i.e. 8 and 9 months post-infection. These results suggest obligate larval inhibition for at least 1 population of O. gruehneri , a phenomenon that has not been conclusively shown for any other trichostrongylid species. Obligate inhibition is likely to be an adaptation to both the Arctic environment and to a migratory host and may influence the ability of O. gruehneri to adapt to climate change. Article in Journal/Newspaper Arctic Climate change Rangifer tarandus Cambridge University Press Arctic Canada Parasitology 139 10 1339 1345 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
SUMMARY Larval inhibition is a common strategy of Trichostrongylidae nematodes that may increase survival of larvae during unfavourable periods and concentrate egg production when conditions are favourable for development and transmission. We investigated the propensity for larval inhibition in a population of Ostertagia gruehneri, the most common gastrointestinal Trichostrongylidae nematode of Rangifer tarandus . Initial experimental infections of 4 reindeer with O. gruehneri sourced from the Bathurst caribou herd in Arctic Canada suggested that the propensity for larval inhibition was 100%. In the summer of 2009 we infected 12 additional reindeer with the F 1 and F 2 generations of O. gruehneri sourced from the previously infected reindeer to further investigate the propensity of larval inhibition. The reindeer were divided into 2 groups and half were infected before the summer solstice (17 June) and half were infected after the solstice (16 July). Reindeer did not shed eggs until March 2010, i.e. 8 and 9 months post-infection. These results suggest obligate larval inhibition for at least 1 population of O. gruehneri , a phenomenon that has not been conclusively shown for any other trichostrongylid species. Obligate inhibition is likely to be an adaptation to both the Arctic environment and to a migratory host and may influence the ability of O. gruehneri to adapt to climate change. |
format |
Article in Journal/Newspaper |
author |
HOAR, BRYANNE M. EBERHARDT, ALEXANDER G. KUTZ, SUSAN J. |
spellingShingle |
HOAR, BRYANNE M. EBERHARDT, ALEXANDER G. KUTZ, SUSAN J. Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
author_facet |
HOAR, BRYANNE M. EBERHARDT, ALEXANDER G. KUTZ, SUSAN J. |
author_sort |
HOAR, BRYANNE M. |
title |
Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
title_short |
Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
title_full |
Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
title_fullStr |
Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
title_full_unstemmed |
Obligate larval inhibition of Ostertagia gruehneri in Rangifer tarandus? Causes and consequences in an Arctic system |
title_sort |
obligate larval inhibition of ostertagia gruehneri in rangifer tarandus? causes and consequences in an arctic system |
publisher |
Cambridge University Press (CUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1017/s0031182012000601 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012000601 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change Rangifer tarandus |
genre_facet |
Arctic Climate change Rangifer tarandus |
op_source |
Parasitology volume 139, issue 10, page 1339-1345 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182012000601 |
container_title |
Parasitology |
container_volume |
139 |
container_issue |
10 |
container_start_page |
1339 |
op_container_end_page |
1345 |
_version_ |
1802004147661176832 |