This document discusses electroreception, the ability of some animals to detect electric fields. It is found in fish, amphibians, monotremes, electric eels, and sharks. Electroreception allows animals to hunt, navigate during migration, and communicate socially. It evolved independently in different lineages and serves different purposes, such as hunting prey for platypuses or defending against predators for electric eels. The adaptation of electroreception is peculiar as it arose independently in various aquatic and semiaquatic vertebrate groups.

1. By Ethan Morgan

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

3.  Primarily hunting
 Orientation during migration
 Social communication
 To tell whether they can weather the weather

4.  Electric Eels- Electric Eel Kills Alligator
 Sharks
 Electrocommunication

5.  Not seen in frogs
 Salamanders use for hunting
 Olm

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

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

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

9.  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>.