Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus )
Animals use day length (photoperiod) to time seasonal adaptations to annual changes in their environment. Reproductive adjustments in deer mice (Peromyscus maniculatus (Wagner, 1845)) from high latitudes are more extensive in response to short days than in deer mice from low latitudes. These adjustm...
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crcansciencepubl:10.1139/z05-121 2024-03-03T08:47:32+00:00 Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) Pyter, L M Weil, Z M Nelson, R J 2005 http://dx.doi.org/10.1139/z05-121 http://www.nrcresearchpress.com/doi/pdf/10.1139/z05-121 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 83, issue 10, page 1271-1278 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2005 crcansciencepubl https://doi.org/10.1139/z05-121 2024-02-07T10:53:39Z Animals use day length (photoperiod) to time seasonal adaptations to annual changes in their environment. Reproductive adjustments in deer mice (Peromyscus maniculatus (Wagner, 1845)) from high latitudes are more extensive in response to short days than in deer mice from low latitudes. These adjustments may permit individuals to survive the severe seasonal changes (e.g., temperature and food abundance) in high-latitude environments. Immune function is also affected by photoperiod. Short days were predicted to result in elevated immune and reproductive responses in meadow voles (Microtus pennsylvanicus (Ord, 1815)) from the Northwest Territories (NWT), Canada (~62°N), compared with voles from Ohio (OH), USA (~39°N). Male voles from both latitudes were maintained in long or short days for 10 weeks prior to a delayed-type hypersensitivity (DTH) immune challenge. Both populations displayed similar testicular regression and reduction of testosterone concentrations in short days. DTH immune responses, however, diverged between the two populations. DTH immune responses were enhanced in long-day NWT voles and short-day OH voles, but decreased in short-day NWT voles and long-day OH voles. Total and free corticosterone concentrations did not explain the latitudinal differences in immune responses. These results suggest that photoperiod affects reproductive and immune systems differently and that immune responses may reflect other environmental factors. Article in Journal/Newspaper Northwest Territories Canadian Science Publishing Northwest Territories Canada Canadian Journal of Zoology 83 10 1271 1278 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Pyter, L M Weil, Z M Nelson, R J Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Animals use day length (photoperiod) to time seasonal adaptations to annual changes in their environment. Reproductive adjustments in deer mice (Peromyscus maniculatus (Wagner, 1845)) from high latitudes are more extensive in response to short days than in deer mice from low latitudes. These adjustments may permit individuals to survive the severe seasonal changes (e.g., temperature and food abundance) in high-latitude environments. Immune function is also affected by photoperiod. Short days were predicted to result in elevated immune and reproductive responses in meadow voles (Microtus pennsylvanicus (Ord, 1815)) from the Northwest Territories (NWT), Canada (~62°N), compared with voles from Ohio (OH), USA (~39°N). Male voles from both latitudes were maintained in long or short days for 10 weeks prior to a delayed-type hypersensitivity (DTH) immune challenge. Both populations displayed similar testicular regression and reduction of testosterone concentrations in short days. DTH immune responses, however, diverged between the two populations. DTH immune responses were enhanced in long-day NWT voles and short-day OH voles, but decreased in short-day NWT voles and long-day OH voles. Total and free corticosterone concentrations did not explain the latitudinal differences in immune responses. These results suggest that photoperiod affects reproductive and immune systems differently and that immune responses may reflect other environmental factors. |
format |
Article in Journal/Newspaper |
author |
Pyter, L M Weil, Z M Nelson, R J |
author_facet |
Pyter, L M Weil, Z M Nelson, R J |
author_sort |
Pyter, L M |
title |
Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
title_short |
Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
title_full |
Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
title_fullStr |
Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
title_full_unstemmed |
Latitude affects photoperiod-induced changes in immune response in meadow voles ( Microtus pennsylvanicus ) |
title_sort |
latitude affects photoperiod-induced changes in immune response in meadow voles ( microtus pennsylvanicus ) |
publisher |
Canadian Science Publishing |
publishDate |
2005 |
url |
http://dx.doi.org/10.1139/z05-121 http://www.nrcresearchpress.com/doi/pdf/10.1139/z05-121 |
geographic |
Northwest Territories Canada |
geographic_facet |
Northwest Territories Canada |
genre |
Northwest Territories |
genre_facet |
Northwest Territories |
op_source |
Canadian Journal of Zoology volume 83, issue 10, page 1271-1278 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z05-121 |
container_title |
Canadian Journal of Zoology |
container_volume |
83 |
container_issue |
10 |
container_start_page |
1271 |
op_container_end_page |
1278 |
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1792503755946590208 |