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Animal Behavior “Behavioral Ecology”
Chapter 54 Animal Behavior “Behavioral Ecology”
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A) Individuals act on information and communicate to others
. - Organisms exchange information -There is a response to internal changes or external clues -This changes behavior
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1- Fight or Flight response
Stress cause hormonal response which activates survival mechanisms
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2- Predator warnings Skunk raises tail and thumps
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B- Mechanisms of communication
Variety of signals and cues Can be visual Audible Tactile chemical
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1) Coloration Coral snake color –warns of poison
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Coloration Poison dart frog
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2 - Flower coloration and scent
Attracts certain pollinators
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3 - Territory marking Leaves scent
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4 - Bee dances Shows direction and distance to food you tube 1 min
Great info 7 mins
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5 - Bird songs Cardinal cardinal 30 sec
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6 - Herd, school and flock behavior
Motion, (lateral lines on fish)
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Bird murmurations starlings 3 mins (show for 20 sec)
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C. Response to communication is vital for survival
Natural selection – Cooperative behavior
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1- Natural selection Favors innate and learned behavior that increases survival and fitness
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Innate behavior Does not have to be learned “instinct”
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A - Sign Stimulus- Instinctively Sea gull chick pecks at red spot on mother to get food innate
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b) Invisible fence Learned behavior
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c) Imprinting- Offspring innately do whatever mother does
Ex. Konrad Lorenz and his goslings
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d) Orientation Salmon know which steam to enter to get to where they were born
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e) Migration Organisms relocate in a cyclical yearly pattern
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f) Navigation Monarch butterflies know how to get home
Generational – the ones that return north are the offspring
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g) Courtship behaviors
Must know courtship dance (Blue footed boobies)
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h) Sexual selection Competition to be the most desirable mate as judged by opposite sex
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2) Animal Cooperation Cooperation Increases fitness of the individual AND the population genes
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a) Alarm calling Vervet monkeys voice alarm when shown jaguar
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b) Optimal foraging organisms forage in such a way as to maximize their energy intake per unit time
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c) Cooperative Hunting
African wild dogs
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d) Social insects Work together for common good Termites Honey bees
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e) Insect societies have castes
Ex. Honeybee. Queens Produced by royal jelly. Lay eggs Females do the work Drones (male bees) mostly useless, but a few get to mate with queen and pass on genes
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Leaf cutter ants Build huge mounds, ants have different jobs
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Meerkats some guard while others eat
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Lions Males defend Females hunt
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