Lecture39 - BioNB 221 Lecture 39 Nov 28 2011 Lecture 39...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BioNB 221: Lecture 39 Nov. 28, 2011 Lecture 39: Predator Avoidance II: Crypsis and Mimicry Professor Robert Raguso 1. Introduction We continue our review of strategies by which animals avoid predation. Today ʼ s lecture focuses on animals that alter their appearance to resemble either inanimate objects (crypsis) or toxic/dangerous animals (mimicry). Crypsis and mimicry are opposite faces of the signal-to-noise coin: to what extent is it advantageous to be (in)conspicuous to one ʼ s predators? What are the costs of these strategies? Required reading for today: Frequency-dependent Batesian mimicry. D.W. Pfennig, W.R. Harcombe, K.S. Pfennig, Nature, Vol. 410 (Mar., 2001), p. 232. 2. Learning Objectives - To appreciate the evolutionary success of camouflage as a predator avoidance strategy, considering its multiple independent origins worldwide. - To distinguish between different forms of mimicry and their evolutionary mechanisms. - To understand frequency-dependent selection and its impact on the evolution of
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/27/2011 for the course BIONB 2210 taught by Professor Seeley during the Fall '10 term at Cornell.

Page1 / 2

Lecture39 - BioNB 221 Lecture 39 Nov 28 2011 Lecture 39...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online