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Updated: Jun 9, 2025
07:36
C. elegans Tracking and Behavioral Measurement
Published on: November 17, 2012
19.0K
Lemming and Vole Cycles: A New Intrinsic Model
Elizabeth A Levay1,2, Helen Nasser1,2, Matthew D Zelko2
1School of Psychology and Public Health La Trobe University Melbourne Victoria Australia.
Ecology and Evolution
|October 23, 2024
Summary
Arctic rodent and lagomorph population cycles may be driven by an intrinsic epigenetic mechanism. This innate process influences sexual development, growth, and behavior, leading to population booms and busts, with external factors playing a modifying role.
Area of Science:
- Ecology
- Evolutionary Biology
- Genetics
Background:
- Multiannual population cycles in Arctic rodents and lagomorphs have been observed for 100 years.
- Current hypotheses often attribute these cycles to extrinsic factors like food, predators, and disease, but none fully explain the phenomenon.
Purpose of the Study:
- To propose an intrinsic, innate mechanism based on epigenetic regulation driving Arctic animal population cycles.
- To explain how epigenetically driven phenotypic changes can lead to population phase shifts and collapse.
Main Methods:
- The study proposes a theoretical framework integrating epigenetic regulation with population dynamics.
- It suggests combining historical field data with modern epigenetic analyses.
Main Results:
- Epigenetic changes in offspring related to development and behavior may accumulate, causing population cycles.
- This intrinsic mechanism, rather than extrinsic factors, is proposed as the primary driver of population cycles.
Conclusions:
- Epigenetic regulation offers a novel explanation for Arctic population cycles, moving beyond solely extrinsic factors.
- Integrating epigenetic analysis with ecological research is crucial for understanding these complex population dynamics.
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