1 / 15

Evolutionary Biology: Understanding Genetic Basis and Foraging Behavior

Explore the genetic basis of behavior, evolution, and foraging strategies. Learn about natural selection, genetic drift, and optimal foraging models. Study techniques for genetic analysis and the impact of habitat selection. Dive into the theories of evolution and behavior in biology.

philip-clements
Télécharger la présentation

Evolutionary Biology: Understanding Genetic Basis and Foraging Behavior

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Midterm Review Biology/Psychology 3750 BIOL 2041

  2. Format • Fill in the blank • Choice • Short Answer • Long Answer • Labs, text, notes – all fair game!!! BIOL 2041

  3. Intro and History • Why study AB? • Niko’s 4 questions • Proximate v. Ultimate • The theory of evolution by natural selection • Basic tenants • History of AB • Roots • Compare/contrast BIOL 2041

  4. Approaches and Methods • Scientific method • Lab – field - natural • Different approaches to AB • Ethology, behavioural ecology • Pros/cons • Methods • Elements of study design • Hypothesis/prediction • Methods of recording • Marking animals BIOL 2041

  5. BIOL 2041

  6. Genetics • Mutations • Heterozygosity and variation • Neo-Darwinism • Natural selection leads to a change in gene frequencies • Adaptations, fitness • Group selection? (remember the lemmings!!) • Kin selection (inclusive fitness) BIOL 2041

  7. Genetics • Evolution • Mutations (raw material) • Natural selection (main but not exclusive means) • Gene flow • Genetic drift (Founder effect) • Null model (Hardy-Weinberg) • Cautions (Spandrels) BIOL 2041

  8. Behavioural genetics and Evolution of Behaviour • Techniques for studying genetic basis of behaviour (knock out gene) • Artificial selection (dogs, domestics) • Microevolution (foxes, peppered moth, ring species) • Macroevolution • techniques BIOL 2041

  9. Foraging Behaviour • Optimal foraging (economics) • Diet selection or prey/patch models • Marginal Value Theorm (berry picking) • GUD • Risk-sensitive foraging (utility – gambling) • Avoid becoming prey/Find prey BIOL 2041

  10. Optimal foraging • E1/h1 > E2 /h2 • Find Prey 1, eat Prey 1 • Find Prey 2, eat or accept cost of moving on to find Prey 1? • E2/h2 > E1/(S1+h1) • Eat Prey 2 if Prey 1 is: • A) hard to find (low density) • B) catch (fast/fierce) BIOL 2041

  11. Patch 2 Energy Patch 1 Patch 3 Travel Time Topt MVT P2 Should I stay or should I go? How long to stay? P3 If near another patch, stay in P1 for short time, then P2 -If far away, stay for longer. BIOL 2041

  12. Utility and patch choice • What patch to choose, dependable or not dependable? • It depends on the conditions (gain curve) • If satiated, dependable patch • If starving, variable patch • The dependable patch will not suffice Satiated Starving BIOL 2041

  13. Development • FAP v MAP • Epignesis v Ontogenetic niche • Song development • Imprinting • Migration (just covered) BIOL 2041

  14. Habitat Selection • Scale • Limiting factors • Philopatry • Theories (IDF, IDD, IDP) • Territoriality BIOL 2041

  15. Study Hard • Focus • Don’t worry BIOL 2041

More Related