Electroreception/Magnetoreception

Question 1

How do some bony fish detect electrical fields?

Answer 1

• through pit organs on head filled with electrically conductive gel

Question 2

What are the 4 main purposes for pit organs?

Answer 2

• locating prey
• migration
• obstacle avoidance
• intraspecific communication

Question 3

How do marine elasmobranchs detect electromagnetic fields?

Answer 3

• ampullae of lorenzini
• short distance

Question 4

What do fish use during migration for geomagnetic orientation?

Answer 4

• magnetite crystals