The curious evolution of electroreception in fish, amphibians, and monotremes ethan morgan

1. The Curious Evolution of Electroreception in Fish, Amphibians and Monotremes By Ethan Morgan

2. What is Electroreception? Electroreception is the ability to perceive electrical stimuli Active electrolocation Passive electrolocation

3. Why Do Animals use Electroreception? Primarily hunting Orientation during m igration Social communication To tell w hether they can weather the weather

4. Electroreception in Fish Electric Eels- Electric Eel Kills Alligator Sharks Electrocommunication

5. Electroreception in Amphibians Not seen in frogs Salamanders use for hunting Olm

6. Electroreception in Monotremes The head-flailing hunting Platypodes - Platypus Hunting For Food Use in unison with mechanoreceptors Echidnas- non-aquatic electroreceptors

7. Evolution of Electroreception No more recent than other sensory systems in vertebrates Curious fish adaptation Amphibian Ancestors Monotreme loners

8. Expected Learning Outcomes What is electroreception? What purpose does electroreception serve for animals? What is peculiar about the adaptation of electroreception?

9. Sources Map of Life - "Electroreception in fish, amphibians and monotremes “ http://www.mapoflife.org/topics/topic_41_Electroreception-in fishamphibians -and- monotremes / November 30, 2011 "Electroreception." Wikipedia . 2011. Web. 30 Nov 2011. Bullock, Theodore. "ELECTRIC FISH, ELECTRIC ORGAN DISCHARGES, AND ELECTRORECEPTION." Electrochemistry Encyclopedia . 2005. Web. 30 Nov 2011. <http://electrochem.cwru.edu/encycl/art-f01- fish.htm Pettigrew, John. "Electroreception in Monotremes ." Journal of Experimental Biology . (1999): n. page. Web. 30 Nov. 2011. <http://jeb.biologists.org/content/202/10/1447.full.pdf>. Platypus Hunting For Food . 2006. Video. YouTubeWeb . 30 Nov 2011. <http://www.youtube.com/watch?v=arSKzJisXBw>. Electric Eel Kills Alligator - Must See . 2010. Video. YouTubeWeb . 30 Nov 2011. <http://www.youtube.com/watch?v=Kw6ZG860mbI?v=arSKzJisXBw>.