2. AP Biology Animal Behavior Chapter 51

3. AP Biology Why study behavior?  ________________________________________— the study of behavior

4. AP Biology Ethology pioneers in the study of animal behavior Niko TinbergenKarl von Frisch 1941 | 1973 Konrad Lorenz

5. AP Biology What is behavior?  Behavior  Defined as observable and coordinated ________________________________________to environmental ________________________________________.  Result of ________________________________________& ________________________________________factors

6. AP Biology What is behavior?  Innate Behaviors  ________________________________________, “instinctive”  ________________________________________& consistent  “Built-in”, no “learning curve”  Despite different environments, all individuals exhibit the behavior  Ex. early survival, reproduction, ________________________________________, ________________________________________

7. AP Biology Evolutionary perspective  Learned behaviors  Modified by ______________________________________  Variable, changeable  change with experience & environment  Flexible with a complex & changing environment  Ability to learn is inherited, but the behavior develops during animal’s lifetime

8. AP Biology Levels of Behavioral Analysis  Proximate causes  ______________________________________ stimulus & mechanism  ______________________________________ & ______________________________________ interaction  Sensory motor mechanisms  “______________________________________” & “______________________________________” questions male songbird  what triggers singing?  how does he sing?  why does he sing? male songbird  what triggers singing?  how does he sing?  why does he sing?

9. AP Biology Levels of Behavioral Analysis  Ultimate causes  ______________________________________ significance  how does behavior contribute to survival & ______________________________________  “______________________________________ ” questions  how does daylength influence breeding?  why do cranes breed in spring?  how does daylength influence breeding?  why do cranes breed in spring? Courtship behavior in cranes  what…how… & why questions Courtship behavior in cranes  what…how… & why questions

10. AP Biology Innate Behaviors-developmentally fixed  Taxis  Kinesis  Migration  FAP  Animal Signals & Communication

11. AP Biology Innate Behaviors-Taxis  Automatic response ______________________________________ or ______________________________________ from a stimulus.  Automatic movement toward (______________________________________ taxis) or from ______________________________________ (negative taxis) a stimulus  phototaxis  Chemotaxis  Examples:  Trout are and swim upstream so as not to be swept away.

12. AP Biology  A change in the activity ______________________________________ in response to a stimulus.  ______________________________________ directed, unlike taxis.  Example:  Sow bugs are more active in dry areas and less in humid ones; this keeps them in moist environments. Innate Behaviors- Kinesis

13. AP Biology Innate behavior: Fixed action patterns (_______)  Unlearned  Usually carried to ______________________________________ once started  Triggered by a ______________________________________ male sticklebacks exhibit aggressive territoriality

14. AP Biology Fixed Action Patterns (FAP) Do humans exhibit Fixed Action Patterns?The “eyebrow-flash” Digger wasp Human babies always smile at a mask with two dark spots for eyes.

15. AP Biology Fixed Action Patterns Examples  Male stickleback fish will show aggression toward any shape that has a red area. attack on red belly stimulus court on swollen belly stimulus

16. AP Biology Figure 51.3 Classic demonstration of innate behavior

17. AP Biology Complex Innate behaviors  Migration  “migratory restlessness” seen in birds bred & raised in captivity  Migration is learned, but how to learn them is innate  ______________________________________ navigation- by sun, stars, Earth magnetic fields Monarch migration Sandpiper ancient fly- ways Bobolink Golden plover

18. AP Biology Examples of Migration  ______________________________________ butterflies from our area migrate to Mexico in the fall and the next generation flies north in the spring.  Snow ______________________________________ fly 2,700 km from James Bay, Canada to Louisiana nonstop in 60 hours.  The green sea turtle migrates 2,200 km across the Atlantic ocean from the east coast of South America to Ascension Island (10 km across) every 2-3 years where the adult females lay eggs.

19. AP Biology Biological Rhythms & Clocks  ______________________________________ Rhythms  “Sleep, wake cycle”  Humans~about 24 hours long  ______________________________________ the normal clock is 24.2 hrs  Mutant flies have cycles of 19 & 28 hrs.  ______________________________________—active during the ___________  ______________________________________—active during hours of _______  ______________________________________—having greatest activity during ____________________ hours or at ______________________________ or both

20. AP Biology Biological Rhythms & Clocks  Lunar cycles  Ex.  Grunion swarm from April-June when the spring tides occur

21. AP Biology Biological Rhythms & Clocks  What controls the biological clock?  No single mechanism—an ______________________________________ of a number of ______________________________________ processes  The ______________________________________ gland is thought to play a role in the timing system of rats, birds and some other vertebrates.  In mammals, regions of the ______________________________________ are involved.

22. AP Biology Biological Rhythms & Clocks  How much is internal and how much is governed by external clues?  Answer: There is usually a strong ______________________________________ (internal) component, but an ______________________________________ (external) cue is necessary to keep the behavior properly timed in the real world.

23. AP Biology Animal Signals & Communication  An action by a sender that influences the behavior of a receiver.  Does not have to be ______________________________________  Ex. bat sound pulses influence moth evasive behavior.

24. AP Biology Communication: Chemical  Works both day and night

25. AP Biology Social interaction requires communication  __________________________  ______________________________________ signal that stimulates a response from other individuals  Ex. Female moths secrete chemicals which attract males.  Cheetahs and other cats mark their territory with ______________________________________, ______________________________________, and anal gland secretions.  alarm pheromones  sex pheromones

26. AP Biology Pheromones Spider using moth sex pheromones, as allomones, to lure its prey Female mosquito use CO 2 concentrations to locate victims marking territory

27. AP Biology Communication: Auditory  ______________________________________ than chemical and also effective both night and day.  Can be modified by loudness, pattern, duration, and repetition.  Ex. Male crickets have calls and birds may have one song for courting, another for distress, and still another for marking territories.  Humpback whales have complicated songs.  Nonhuman primates have up to 40 different vocalizations.

28. AP Biology Communication by song  Bird song  species identification & mating ritual  mixed ______________________________________ & ______________________________________  critical learning period  Insect song  mating ritual & song  innate, genetically controlled

29. AP Biology Communication: Tactile  Occurs when one animal ______________________________________ another.  Ex. A male leopard nuzzles a female’s neck to calm her and to stimulate her willingness to mate.

30. AP Biology  Honey bee communication  dance to communicate location of food source  ______________________________________ dance  Discovered by Karl von ______________________________________ in the 1940s. Waggle dance indicates both distance to and direction of food.

31. AP Biology Communication: Visual  Most often used by species that are active during the _____________________________________.  Contests between males involve threat postures and possibly prevent fighting.  Ex. Male birds often put on courtship dances to attract females.  Much human communication is nonverbal such as smiling, blushing, body posture.

32. AP Biology Learned Behavior: Modified behaviors by experience  Habituation  Imprinting  Associative learning  Classical conditioning  Operant conditioning  Cognition

33. AP Biology Learning: Habituation  Loss of response to ______________________________________  “______________________________________ ” effect  ______________________________________ in response to repeated occurrences of stimulus  enables animals to disregard unimportant stimuli  ex: falling leaves not triggering fear response in baby birds

34. AP Biology Innate & Learning: Imprinting  Learning to form social attachments at a specific ___________________________ (_________________________ ) ______________________________________  both learning & innate components  Konrad ______________________________________ spent time with geese hours after hatched

35. AP Biology Figure 51.9 Imprinting: Konrad Lorenz with imprinted geese Konrad Lorenz Imprinting

36. AP Biology Conservation biologists have taken advantage of imprinting by young whooping cranes as a means to teach the birds a migration route. A pilot wearing a crane suit in an Ultralight plane acts as a surrogate parent. Conservation Wattled crane conservation teaching cranes to migrate

37. AP Biology Associative learning  Learning to associate a stimulus with a consequence  ______________________________________ conditioning  BF ______________________________________  Trial & error learning  Associate ______________________________________ with ______________________________________ or ______________________________________

38. AP Biology Associative learning  Classical conditioning  ______________________________________ conditioning  Associate ______________________________________ with ______________________________________ or ______________________________________

39. AP Biology Operant Conditioning Gradual strengthening of stimulus-response connections. Examples: Teaching an animal a trick by rewarding correct behavior with affection or food. B.F. Skinner’s experiments ____________________________________________connect sugar treat with pressing a ____________________________________________.

40. AP Biology Operant conditioning  ____________________________________________ box mouse learns to associate behavior (pressing lever) with reward (food pellet) B. F. Skinner

41. AP Biology Critical period As a brood parasite, the Cuckoo never learn the song of their species as a nestling. Song development is totally innate.  Sensitive phase for optimal _______________________________________________  some behavior must be learned during a receptive time period

42. AP Biology Classical conditioning  Ivan ______________________________________dogs  connect reflex behavior (____________________________________________ at sight of food) to associated stimulus (ringing ____________________________________________)

43. AP Biology Learning: Cognition  Ability for ____________________________________________ system to store, perceive, and process information tool use problem-solving

44. AP Biology Social Behavior  Some animals are largely solitary and join with a member of the opposite sex only for ____________________________________________; others pair, bond and cooperate in the raising of offspring.  Still others form a society in which members are organized in a ____________________________________________ manner.  ____________________________________________— a group of individuals of the same species that cooperate in an adaptive manner; e.g. bee hive, flock of birds, wolf pack, school of fish.

45. AP Biology Social behaviors  Interactions between individuals  develop as evolutionary adaptations  Result in survival and reproductive success  Agonistic behaviors  Dominance hierarchy  Cooperation  Altruistic behavior

46. AP Biology Social behaviors  ____________________________________________ behaviors  Threatening & Submissive rituals  symbolic, usually no harm done  ex: ____________________________________________, competitor aggression

47. AP Biology Social behaviors  ____________________________________________ hierarchy  social ranking within a group  ___________________________________ order

48. AP Biology Dominance Hierarchies  A ____________________________________________ ranking animal has greater access to ____________________________________________ than a lower ranking animal.  Decided by ____________________________________________ during which one animal gives way to another.  Once established, little or no time is wasted in fighting.  Dominant male mate more often with the females.

49. AP Biology Territoriality-- Protecting an area against other individuals.  Male songbirds sing to signify their territories and other males know to stay away. The song also alerts females to presence of a male.  May be adaptive—tends to reduce conflict, to control ____________________________________________ growth, and to ensure the most efficient use of ____________________________________________ by spacing organisms throughout a habitat.

50. AP Biology Social behaviors Pack of African dogs hunting wildebeest cooperatively White pelicans “herding” school of fish  Cooperation  working ____________________________________________ in coordination

51. AP Biology Social behaviors  Altruistic behavior  ____________________________________________ ____________________________________________ fitness but ____________________________________________ fitness of others in a ____________________________________________  ___________________________________selection  increasing survival of close relatives passes these genes on to the next generation How can this be of adaptive value? Belding ground squirrel

52. AP Biology Examples of Altruistic Behaviors  In social insects such as bees, only the queen bee and her mate reproduce.  A female chimp often mates with several males in a group because they are all related and share genes in common.

53. AP Biology Mating & parental behavior  Genetic influences  changes in behavior at different stages of mating  pair bonding  competitor aggression  Environmental influences  modifies behavior  quality of diet  social interactions  learning opportunities

54. AP Biology Social Behavior & Reproduction  __________________________________________________________________ has favored mechanisms that promote successful reproduction.  Behavior is thus adaptive—behavioral traits can evolve.  ____________________________________________ competition among males has contributed to the evolution of large ____________________________________________, brilliant breeding ____________________________________________, antlers, etc.  Known as ____________________________________________ __________and the traits are called secondary sexual characteristics.

55. AP Biology Social Behavior & Reproduction  Courtship rituals may be long and elaborate.  May serve as a sign signal to trigger nest building and ovulation.  Male spiders offer food.  Female praying mantis eats head of male

56. AP Biology Behavior: Nature or Nurture?  Behavior is also shaped by ____________________________________________ influences (____________________________________________).  Studies of human twins have been used to help determine to what extent behavior is inherited.  Identical twins come from a single ____________________________________________. Fraternal twins are derived from two different fertilized eggs.  Fraternal twins, even when raised together, do not have similar behaviors.

57. AP Biology  Identical twins raised separately are sometimes very similar; for example, the German twins raised in Germany and the Caribbean both liked sweet liqueurs, stored rubber bands on their wrists, read magazines from back to front, dipped buttered toast in their coffee, and had similar personalities.  Data seems to show that about 50% in human personality traits are due to polygenic inheritance and 50% are due to environmental influences.

58. AP Biology Any Questions??