Effects of Maternal Age on Offspring Telomere Length Across Generations
Author Information
Author(s): Valeria Marasco, Winnie Boner, Kate Griffiths, Shirley Raveh, Pat Monaghan
Primary Institution: University of Veterinary Medicine Vienna
Hypothesis
Does the negative effect of maternal breeding age on offspring telomere length persist across multiple generations?
Conclusion
Offspring of older mothers have shorter telomeres that persist into the next generation, even when those offspring breed at a young age.
Supporting Evidence
- F2 offspring from older grandmothers had telomeres 43% shorter than those from younger grandmothers.
- Shorter telomeres at fledging are linked to reduced lifespan in zebra finches.
- The study controlled for environmental conditions to isolate the effects of maternal age.
Takeaway
If a mother is older when she has babies, those babies might not live as long, and this effect can even be seen in their babies' babies.
Methodology
A multi-generational study using zebra finches to measure telomere length in offspring of mothers bred at different ages.
Potential Biases
Potential bias from selective disappearance of phenotypes and environmental conditions not being representative of the wild.
Limitations
The study was conducted in controlled laboratory conditions, which may not reflect natural environments.
Participant Demographics
Zebra finches, with specific focus on maternal age effects.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website