Explore the intricate relationship between behavior and evolution in this thought-provoking lecture. Delve into the concept of behavior as both a driving force and a limiting factor in phenotypic evolution, with a focus on the 'Cybotoid' Anoles from Hispaniola. Examine how thermoregulation impacts cold tolerance, body temperature, and evolutionary processes across different elevations and environments. Investigate the "Bogert Effect" and its implications for physiological adaptation. Compare thermoregulatory behaviors between island and mainland anoles, and discover how these differences influence heat tolerance evolution and optimal trait values. Analyze the impact of thermoregulation on morphological evolution and explore its potential role in mitigating extinction risks for high-elevation species. Gain insights into the timing and patterns of diversification in Anoles, and learn about innovative approaches to reconstructing adaptive radiation using microbial systems.
Behavior Is a Motor and a Brake for Evolution
Overview
Syllabus
Intro
Evolution proceeds unevenly.
Behavior is a major pacemaker for phenotypic evolution.
The 'Cybotoid' Anoles from Hispaniola
Cold Tolerance Decreases with Elevation
Body Temperature Remains Stable Across Elevation
Thermoregulation Buffers Organisms from Environmental Variation
The "Bogert Effect" or "Behavioral Inertia"
Why Behavioral (Rather than Physiological) Adjustment?
Hotter Is Better: Maximum Performance Increases with Body Temperature.
Geographic Distribution of Anolis Lizards
Does thermoregulation differ between island and mainland anoles?
Greater Thermoregulation in Island Anoles.
The Bogert Effect: Slower heat tolerance evolution, higher optimal trait value in island anoles.
The Island Bogert Effect 1. Heat tolerance evolution slower on islands.
Island lizards move around more than mainland anoles.
Operative Temperature (T.) Measurement on Trees and Boulders
The preferred temperature range (T...): Preferred range in the absence of ecological constraints.
High Elevation Lizards Perch on Boulders Arboreal
Does thermoregulation impact morphological evolution?
Thermal Environment
Can behavior stop the 'escalator to extinction?
When we incorporate physiology and behavior, we predict activity gain, not activity loss!
Warming constricts high-elevation pine forest
High Extinction Risk for Montane Anoles
Timing and Patterns of Diversification in Anoles
Reconstructing Adaptive Radiation Using Microbial Systems
Taught by
EvoEcoSeminars
