Chapter 15 Flashcards
behavior
the way an organism responds to changes in its internal or external environment
A behavior can be
innate or learned
Innate behavior
Learned behavior
‘inborn’ , for ex. running for shelter upon hearing a loud noise
something that;s taught , for ex. children sharing
Ethology
the study of behavior and its relationship to its evolutionary origins
Karl von Frisch
known for his extensive studies of honeybee communication and his famous description of the bee ‘waggle’ dance
Niko Tinbergen
known for his elucidation of the fixed action pattern
Konrad Lorenz
famous for his work with imprinting
FAP
fixed action pattern
-innate, highly stereotypical behavior that, once begun, is continued to completion no matter how useless or silly looking
FAPs are initiated by
external stimuli called sign stimuli
-when these stimuli are exchanged between members of the same species , they are known as releasers
Example of a FAP
studied by tinbergen
- involves the stickleback fish, which attacks other males that invade its territory
- stickleback won’t attack an invading male stickleback lacking a red underbelly, but will attack a nonfishlike wooden model as long as a splash of red is visible
Learning
a sophisticated process in which the responses of the organism are modified as a result of experience
What is the capacity to learn tied to?
- length of life
- complexity of the brain
Short life span
Long life span
- has no time to learn, even if it has the ability, therefore, it must rely on fixed action patterns
- a large part of its behavior is dependent on prior experience and learning
Habituation
one of the simplest forms of learning in which an animal comes to ignore a persistent stimulus so it can go about its business
Hydra Example w/ Habituation
- if you tap a dish w/ a hydra, it will quickly shrink and become immobile
- if you keep tapping, after a while the hydra will begin to ignore the tapping, elongate, and continue moving about
- it has become habituated or used to the stimulus