ub.xmlui.mirage2.page-structure.MuninLogoub.xmlui.mirage2.page-structure.openResearchArchiveLogo
    • EnglishEnglish
    • norsknorsk
  • Velg spraakEnglish 
    • EnglishEnglish
    • norsknorsk
  • Administration/UB
View Item 
  •   Home
  • Fakultet for biovitenskap, fiskeri og økonomi
  • Institutt for arktisk og marin biologi
  • Artikler, rapporter og annet (arktisk og marin biologi)
  • View Item
  •   Home
  • Fakultet for biovitenskap, fiskeri og økonomi
  • Institutt for arktisk og marin biologi
  • Artikler, rapporter og annet (arktisk og marin biologi)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species

Permanent link
https://hdl.handle.net/10037/19972
DOI
https://doi.org/10.1242/jeb.230987
Thumbnail
View/Open
article.pdf (2.103Mb)
Accepted manuscript version (PDF)
Date
2020-10-21
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
van Rosmalen, Laura; van Dalum, Mattis Jayme; Hazlerigg, David; Hut, Roelof A.
Abstract
To optimally time reproduction, seasonal mammals use a photoperiodic neuroendocrine system (PNES) that measures photoperiod and subsequently drives reproduction. To adapt to late spring arrival at northern latitudes, a lower photoperiodic sensitivity and therefore a higher critical photoperiod for reproductive onset is necessary in northern species to arrest reproductive development until spring onset. Temperature–photoperiod relationships, and hence food availability–photoperiod relationships, are highly latitude dependent. Therefore, we predict PNES sensitivity characteristics to be latitude dependent. Here, we investigated photoperiodic responses at different times during development in northern (tundra or root vole, Microtus oeconomus) and southern vole species (common vole, Microtus arvalis) exposed to constant short (SP) or long photoperiod (LP). Although the tundra vole grows faster under LP, no photoperiodic effect on somatic growth is observed in the common vole. In contrast, gonadal growth is more sensitive to photoperiod in the common vole, suggesting that photoperiodic responses in somatic and gonadal growth can be plastic, and might be regulated through different mechanisms. In both species, thyroid-stimulating hormone β-subunit (Tshβ) and iodothyronine deiodinase 2 (Dio2) expression is highly increased under LP, whereas Tshr and Dio3 decrease under LP. High Tshr levels in voles raised under SP may lead to increased sensitivity to increasing photoperiods later in life. The higher photoperiodic-induced Tshr response in tundra voles suggests that the northern vole species might be more sensitive to thyroid-stimulating hormone when raised under SP. In conclusion, species differences in developmental programming of the PNES, which is dependent on photoperiod early in development, may form different breeding strategies as part of latitudinal adaptation.
Is part of
van Dalum, M.J. (2022). Evolution of seasonal adaptations in voles - a physiological and genetic approach. (Doctoral thesis). https://hdl.handle.net/10037/24919.
Publisher
The Company of Biologists
Citation
van Rosmalen, van Dalum, Hazlerigg, Hut. Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species. Journal of Experimental Biology. 2020;223
Metadata
Show full item record
Collections
  • Artikler, rapporter og annet (arktisk og marin biologi) [1332]
© 2020. Published by The Company of Biologists Ltd |

Browse

Browse all of MuninCommunities & CollectionsAuthor listTitlesBy Issue DateBrowse this CollectionAuthor listTitlesBy Issue Date
Login

Statistics

View Usage Statistics
UiT

Munin is powered by DSpace

UiT The Arctic University of Norway
The University Library
uit.no/ub - munin@ub.uit.no

Accessibility statement (Norwegian only)