Behavioral Neuroscience, lecture on Aplysia and its behavior
USD Department of Biology
Behavioral Neuroscience
Aplysia Behavior
Sensory Stimulation of Siphon Withdrawl
Motor Output driving Siphon Withdrawal
Conditioning & Memory
Aplysia Siphon and Gill text:Kandel pages 1248-1257
Acetylcholine (ACh)
Aplysia and Siphon Withdrawl
Siphon Withdrawl Circuitry
end     Acronyms/Abbreviations     Syllabus
Pictures of the Sea Hare Aplysia    back to Behavior Lecture

Aplysia Species:
1) A. californica
Aplysia californica A californicanotice the mantle

A. brasiliana
Aplysia brasiliana

A. dactylomela
Aplysia dactylomela

A. depilans
Aplysia depilans

A. extraordinaria
Aplysia extraordinaria

A. fasciata
Aplysia fasciata

A. punctata
Aplysia punctata

2) Feeding on Algae
Aplysia californica feeding on algae
cepahlic tentacles

3) Mantle and Siphon
Aplysia mantleMantle and Siphon
Line drawing of Aplysia with open mantle exposing siphon
A. brasiliana showing siphonA. brasiliana showing siphon

4) Ink release in Defensive Response
A. californica releasing ink

5) Copulation
Hermaphroditic A. californica mating

Aplysia Nervous System:
1) Diagram of ganglia and connections
Cartoon of Aplysia ganglia

Pictures of Siphon withdrawal Behavior in Aplysia:
1) Diagram of Gill-Siphon withdrawal reflexes
Cartoon of Aplysia siphon withdrawal reflex

2) Diagram of Tail-Siphon withdrawal reflexes
Cartoon of Aplysia tail withdrawal reflex

2) Diagram of both withdrawal reflexes
Cartoon of Aplysia tail withdrawal reflex