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Animal Behavior Magnet Biology
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Animal Behavior Behavior: anything an animal does in response to a stimulus in its environment
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Ethology Study of how animals behave 4 main questions
What stimulus elicits a behavior and what physiological mechanisms mediate a response? How does the animals experiences during development influence the response How does the behavior aid survival and reproduction What is the behaviors evolutionary basis.
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Instincts Innate behavior – “fixed” (inherited) behaviors that all the
animals in a population are born with (associated with instinct)
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Movement Kinesis – change in activity due to a stimulus
Taxis – orientation towards or away from a stimulus
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Migration Migration – a long distance change of locations done at regular intervals Usually stimulated by seasonal changes Use the sun, north star, or the earth magnetic field
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Rhythms Circadian rhythms – daily cycles (rest, eating, etc), usually regulated by light and dark Circannual rhythms – yearly cycles usually linked to seasons. Cortisol, released by the adrenal gland
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Territoriality - defense of a physical space, territory
Songs, calls, intimidation, marking territory, attack, chase bashing-bison.
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Fight or Flight The decision to fight or run is measured by risk and reward (benefits should out weight costs)
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Signaling Usually, visually, chemical, or auditory
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Learning Nature vs nurture- Genetic inheritance vs Environmental Influences
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Imprinting Imprinting – a life long reaction or bond to an object or individual created at a young age Usually a baby raised by a different species mistakenly believes he is of that species
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Learning Habituation – a reduction or loss of reaction to a stimuli (crying wolf)
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Classical conditioning
Classical conditioning – a stimulus elicits a response Povlov’s dog – ringing a dinner bell before dinner causes the dog to salivate without food being present
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Pavlov’s dogs
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Operant Conditioning Operant conditioning – an animal connects his behavior with a good or bad response (trial and error) Rewarding dog with a treat
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Cognition Cognition – the ability to think, reason and process information. Cognition can be used to problem solve
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Selection and Survival
Most behaviors are ultimately formed by natural selection for survival and reproduction
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Mating Systems Promiscuous – no mating bonds
Monogamous – strong bond forms one male one female for a long period Polygamous – one sex mates with others
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Antagonistic behavior
Competition to gain access to a resource.
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Altruism Altruism- animals reduces their individual fitness to increase the population fitness Insect societies- reproduction limited to only one pair, the queen and her mate. Workers – take care of female and larvae; gather food
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Social Learning Social learning – an individual learns by copying the behavior of a more experienced individual. This breeds culture. Increases fitness
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Mate choice copying Mate choice copying – females choose mates that other females find attractive
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THE END!!! Time to show off what you have learned Good luck!!
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