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Unformatted text preview: Lobster Neuromodulation Neuro- transmitter Behavior following injection of neurotransmitter into bloodstream Directly apply neurotransmitter to flexor muscle Directly apply neurotransmitter to extensor muscle Resulting behavior following injection of neurotransmitter onto muscles Apply neurotransmitter to neurons that control flexor muscles Apply neurotransmitter to neurons that control extensor muscles Resulting behavior following injection of neurotransmitter onto neurons that control the muscles Octopamine Relaxed and ready to mate Contraction Contraction Muscle cramps Relaxation Contraction which causes extension Relaxed and ready to mate Serotonin Startled and ready to fight Contraction Contraction Contraction which causes flexion Relaxation ready to fight VI.B.5. Neuromodulation of Lobster escape Escape response is suppressed by descending or hormonal control when 1) The crayfish is in the grasp of a predator and swimming is not useful, fighting and squirming are the only ways out at that point. 2) A female lobster is pregnant and eggs are attached to the underside of her tail. Under these conditions a rapid tail-flip in escape would dislodge the eggs & destroy her prodigy 3) when the lobster is very hungry and would rather fight to protect potentially fruitful hunting grounds.3) when the lobster is very hungry and would rather fight to protect potentially fruitful hunting grounds....
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This note was uploaded on 11/16/2011 for the course NPB NPB 100 taught by Professor Campbell during the Spring '10 term at UC Davis.
- Spring '10