INSECTIVORES
Morphology and Behavior of Crabs and Gastropods from Lake Tanganyika, Africa: Implications for Lacustrine Predator-Prey Coevolution.
Definitions
Molluscs vs. Molluscivores
Lake Tanganyika
Lake Tanganyika Thiarids
Lake Tanganyika Viviparids
Why are the gastropod morphologies abnormal?
Methods
1) Comparative Morphology
2) Shell-crushing experiment
The Instron Universal Testing Machine
Predation experiment
3) Predation experiment
And now…..
Comparative Morphology
Shell Crushing Experiment
Durophagous Crab Behavior
Gastropod Predation Vulnerability
Coevolution?
Coevolution
Lakes Undergo:
Coevolution Supported?
TETRODOTOXIN RESISTANCE IN GARTER SNAKES: AN EVOLUTIONARY RESPONSE OF PREDATORS TO DANGEROUS PREY
Introduction
Cast of Characters
Taricha granulosa
Cast of Characters (cont.)
Thamnophis sirtalis
Thamnophis ordinoides
Purpose of This Study
Methods (cont.)
Percent of baseline speed as a function of mass-adjusted mouse units of TTX for each of three garter snake populations
Problems for a nonresistant predator
Requirements for the Arms Race Analogy
Newt escaping from a paralyzed Garter snake
What would else would this study need to defend predator-prey coevolution?
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