Cover Image

Migratory Eurasian blackbirds have longer telomere length but similar mitochondrial density than resident conspecifics

Telomeres are regarded as key markers of cellular ageing and physiological state. Oxidative stress, which can accelerate telomere shortening, is thought to increase during energetically demanding processes such as bird migration. However, their study in the context of migratory behaviour is limited....

Full description

Saved in:
Bibliographic Details
Main Authors: Salmón, Pablo (Author) , Ellermann, Sophie (Author) , Wellbrock, Natalie (Author) , Frias Soler, Roberto Carlos (Author) , Bairlein, Franz (Author) , Liedvogel, Miriam (Author)
Format: Article (Journal)
Language:English
Published: January 2026
In: Journal of avian biology
Year: 2026, Volume: 2026, Issue: 1, Pages: 1-6
ISSN:1600-048X
DOI:10.1002/jav.03547
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/jav.03547
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/jav.03547
Get full text
Author Notes:Pablo Salmón, Sophie Ellermann, Natalie Wellbrock, Roberto Carlos Frias-Soler, Franz Bairlein and Miriam Liedvogel
Description
Summary:Telomeres are regarded as key markers of cellular ageing and physiological state. Oxidative stress, which can accelerate telomere shortening, is thought to increase during energetically demanding processes such as bird migration. However, their study in the context of migratory behaviour is limited. Here we compared telomere length (TL) and mitochondrial DNA copy number (mitoDNAcn) between migratory and resident Eurasian blackbirds on the island of Helgoland, a migratory stopover site. Contrary to expectations, we found migrants had longer TLs despite similar mitochondrial densities. These findings reinforce the idea that migratory individuals may possess specific physiological adaptations, such as enhanced antioxidant defences, that help preserve telomere integrity. Overall, our results underscore the complex interactions between migratory behaviour and cellular maintenance and point to the need for broader comparative studies across species and migratory strategies.
Item Description:Zuerst veröffentlicht: 29. Januar 2026
Gesehen am 08.06.2026
Physical Description:Online Resource
ISSN:1600-048X
DOI:10.1002/jav.03547

Similar Items