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Projects
Manuscript Sebastian
List of Figures:
- Fig. 1: selection coefficient
- Fig. 2: first step, no correlation, alpha_1 bar as function of gamma
- Fig. 3: first step, no correlation, alpha_1 bar as function of n (complexity)
- Fig. 4: first step, no correlation, histograms
- Fig. 6: first step, no correlation, heat plot
- Fig. 7: selectional correlation, all steps, alpha_1 bar
- Fig. 8: selectional correlation, all steps, rho_alpha
- Fig. 9: selectional correlation, first step, heat plot and histograms
- Fig. 10: selectional correlation, fitness gradient
- Fig. 11: selectional correlation, diving kite
- Fig. 11a: selectional correlation, time series, flying kite
- Fig. 12: mutational correlation, all steps, various measures, n = 2
- Fig. 12: mutational correlation, all steps, various measures, n = 3
- Fig. 14: mutational correlation, first step, heat plots
- Fig. 15: mutational correlation, time series, flying kite
- Fig. 16: mutational and selective correlation, rho_alpha
Project extinction risk
Ideas (25 Jan 2013):
- Deadline is April 2!
- Main topic is climate change, adaptation, and plasticity, not necessarily evolutionary rescue
- Unclear to what degree the article will be a review or a modeling paper
- Need to read up recent reviews, especially Chevin
- One idea: explain assumptions behind and consequences of Bürger & Lynch model
Moving optimum model
- Key idea: Calculate evolutionary rates in haldanes;
- choose reasonable set of genetic parameters
- focus on varying ecological parameters (N, B, v, omega, theta)
- Preliminary observations in small populations
- Rates of evolution generally increase as the optimum pulls away
- Genetic variances stay high until just before extinction; may even reach a big shortly before extinction
- Initial rate of evolution low even with strong selection? Requires analysis of allele frequencies (→ standing variation project)
- To do: find way to compactly visualize evolutionary rates
- over which time window?
- haldanes calculates over which interval?
Potential topics
- Focus on evolutionary rates might be justified, since models tend to be dynamic
- Phenotypic adaptation by genetic evolution: all of quantitative genetics:-), starting with breeders/Lande equation
- Evolution of plasticity: been reviewed several times
- Evolutionary rates: Andrew should know all about those
- Maybe here our simulations fit in
- Evolutionary rescue: note exactly the topic
- Evolutionary rescue and plasticity: Good review in Chevin et al. 2012
- Plasticity facilitates genetic adaptation: West-Eberhard etc., some more concrete models showing this to be the case
- Something about the expected contribution from genetics and plasticity? Is this possible? (Ghalambor 2007)
- Different kinds of environmental change (sudden, moving, fluctuating; kinds of noise)
- Plasticity vs. tolerance
- Constraints and limits to adaptive evolution
- Costs and limits of plasticity
- Evolvability ↔ environmental variability
Potential PhD project on speciation
Interesting topics:
- parapatric speciation
- female preferences
- genomic islands
- mixed geographic modes
- interaction between magic and non-magic traits (see van Doorn and Weissing 2004)
- plasticity
Sources of inspiration:
- List of questions in Nosil book
- Butlin et al review
- To some degree Smadja and Butlin review
Potential topic: Phenotypic plasticity and speciation
- Reviews: Pfennig et al. 2010, Fitzpatrick 2012, Minelli & Fusco 2012
- Start with more specific review about classification of scenarios and links to theory (complementary to Pfennig et al. 2010)? – Focus on evolution of RI; classify according to types of plasticity, type of plastic traits, …
- Make a list of proposed theoretical scenarios
- Make a list of proposed empirical examples
- arctic charr
- cichlids
- sticklebacks?
- tiger salamanders?
- examples from WE book
- Use Thibert-Plante and Hendry (2011) as starting point (see my review on it), but focus more on evolution of female preferences? (Or use assortative mating instead?)
- Some potential model ingredients/variants:
- female preference vs. assortative mating
- automatic vs. classic plastic magic trait
- linear reaction norm vs. threshold characters
- Try to model the arctic charr scenario?
- See list of questions in Fitzpatrick 2012
- Use Draghi and Whitlock approach to model plasticity?
- Plastic magic traits…
- Key question: Interaction between evolution of non-random mating and genetic assimilation
- Interaction between evolution of plastic and non-plastic barriers?
Comments on Adrianna's manuscript
- Is this a critique of W-E's theory of speciation, or rather of her theory phenotypic evolution per se?
- Describe the DPHS in more details (as in Pfennig et al. 2010, Fitzpatrick 2012)?