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Updated: Jan 21, 2026
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Demonstration of the Sequence Alignment to Predict Across Species Susceptibility Tool for Rapid Assessment of Protein Conservation
Published on: February 10, 2023
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Towards a predictive conservation biology: the devil is in the behaviour.
Bernt-Erik Sæther1, Steinar Engen2
1Department of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
Summary
Predicting species survival requires understanding population dynamics. Sexual selection strength, measured by the Bateman gradient, can predict demographic stochasticity and genetic drift, improving conservation efforts for vulnerable populations.
Area of Science:
- Conservation Biology
- Behavioural Ecology
- Population Dynamics
Background:
- Predicting the viability of vulnerable populations is a key conservation challenge.
- Demographic stochasticity significantly impacts small populations, affecting ecological and evolutionary dynamics.
- Accurate estimation and modeling of demographic variance are crucial for conservation biology.
Purpose of the Study:
- To investigate the link between sexual selection and demographic stochasticity.
- To explore the role of mating systems in demographic variance.
- To enhance the reliability of population viability analyses by incorporating behavioral ecology principles.
Main Methods:
- Summarized theoretical evidence on demographic variance and its relation to extinction probability and genetic drift.
- Quantified sexual selection using the Bateman gradient in a field study.
- Analyzed demographic stochasticity in relation to mating systems and sexual selection.
Main Results:
- Demographic variance, a key parameter, influences extinction probability and is linked to genetic drift.
- Demographic variance is larger in polygynous than monogamous populations.
- Field study on moose supported the hypothesis that sexual selection strength predicts demographic stochasticity and genetic drift.
Conclusions:
- Incorporating behavioral ecology, particularly sexual selection, can improve population viability analyses.
- Understanding intersexual differences in mating success is essential for explaining demographic variance.
- Novel approaches in behavioral ecology can enhance conservation strategies by linking behavior to population and community dynamics.
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