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Visions & Expressions Lecture: Dr. Nick Dowdy

Location: 
Commons 101
Cost: 
FREE
Contact: 
Michael Pauers: Michael.Pauers@uwc.edu
Dates: 
Tue, Mar 27, 2018, 12:00 pm to 1:00 pm
Description 
Dr. Nicholas J. Dowdy | Postdoctoral Fellow, Purdue University, Postdoctoral Researcher, Milwaukee Public Museum
Tues • 12 pm • C101 • Visions & Expressions: Dr. Nicholas J. Dowdy, Aerial Warfare Between Bats and Moths
Aerial Warfare Between Bats and Moths
 

Tiger moths (Lepidoptera: Erebidae: Arctiinae) have experienced intense selective pressure from echolocating, insectivorous bats for over 65 million years. In response, these moths have evolved a suite of remarkable defenses to deal with their would-be predators. Dowdy will present results from recent experiments with wild, free-flying bats which demonstrate that the sounds produced by toxic tiger moths can function as acoustic warning signals. In addition, he will present 3D flight data from this study showing that some moth species are "nonchalant" and do not evade bats as frequently
as others and explore some factors that may underlie these interspecific differences. He will then discuss combining preserved museum specimens, advanced imaging methods, and statistical tools to predict the acoustic characteristics of sounds produced by moths as well as their potential functions
against bats on a large scale. Finally, Dowdy will describe two newly discovered anti-bat tiger moth defenses which co-opt structures that are typically involved in sexual communication and courtship.