Related Experiment Video
Updated: Jul 3, 2026

Field Experiments of Pollination Ecology: The Case of Lycoris sanguinea var. sanguinea
Published on: November 25, 2016
Evolution of flowering decisions in a stochastic, density-dependent environment
C J E Metcalf1, K E Rose, D Z Childs
1Duke Population Research Institute, Duke University, Durham, NC 27707, USA. cjm29@duke.edu
This study demonstrates accurate predictions of life history decisions in fluctuating populations by integrating theoretical ecology and evolution with statistical analysis of demographic data. These findings are evolutionarily stable, allowing for protected polymorphisms.
Area of Science:
- Ecology and evolutionary biology
- Population dynamics
- Life history theory
Background:
- Understanding the interplay between ecological factors and evolutionary trajectories is crucial for explaining organismal life histories.
- Life history traits evolve in response to environmental changes and population density.
Purpose of the Study:
- To develop and validate a method for accurately predicting life history decisions in natural populations.
- To investigate the evolutionary stability of predicted life history traits.
Main Methods:
- Combined theoretical approaches (e.g., mathematical modeling) with statistical analysis of individual-based demographic data.
- Analyzed populations experiencing density regulation and significant inter-annual fluctuations in demographic rates.
Main Results:
- Achieved remarkably accurate and statistically well-defined predictions of life history decisions.
- Demonstrated that the predicted trait values are evolutionarily stable and convergence stable.
- Showed the potential for protected polymorphisms under these conditions.
Conclusions:
- Integrating ecological and evolutionary theory with empirical data enables precise prediction of life history evolution.
- Life history traits in fluctuating, density-regulated populations can evolve towards stable states, allowing for genetic diversity.
More Related Videos
12:14Exploring Life History Choices: Using Temperature and Substrate Type as Interacting Factors for Blowfly Larval and Female Preferences
Published on: November 17, 2023
09:23Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System
Published on: November 1, 2017
Related Concept Videos
Gene Flow
Genetic Drift
Mutation, Gene Flow, and Genetic Drift
Frequency-dependent Selection
Evolution of New Traits in Microbes
Pollination and Flower Structure