Animal Behavior - Appoquinimink High School

Animal Behavior - Appoquinimink High School

Introduction to Animal Behavior Why do they do that? Warm Up Personification: Putting human characteristics onto animals to explain behavior Youtube: YVtU

Unit Map: Follow Along in your packet WHAT ARE YOU LEARNING? Explain factors that serve to stimulate or discourage various types of animal behavior. Recognize the normality curve of animal behavior. Know Understand Do! Know

Types of Behavior History of studying animal behavior Understand Stimuli influence on behavior

How ethology has evolved Do Observe and interpret animal behaviors Evaluate animal studies

Key Learning: Animal Behavior Unit EQ: How does animal behavior influence animal husbandry? Concept : Types Lesson EQ: What are categories of behavior? Vocab Stimuli, Behavior, Ethology

Concept : History Concept : Influence Lesson EQ: How are animals studied for behavior? Vocab FAP Lesson EQ:

What can alter behavior ? Vocab Agnostic What is Animal Behavior? The study of how and why animals interact with each other (both within and among species) and their environment. Proximate questions - how mechanisms responsible for interactions

Ultimate questions - why how these interactions influence an individual's survival and reproduction. Some examples: Intraspecific interactions mate choice male competition alarm calls parental care

Some examples: Interspecific interactions predation parasitism mutualism competition Some examples: Interactions with the environment foraging

nest site selection signal modification Why study behavior? Possible first science: Our survival dependent on knowledge of other animals (prey/competitors/predators). Control/management of species: Food and game species, agricultural pests, invasive species, endangered species. Understanding/modification of our own behavior?

Studies of how birds learn and develop songs provide unique insights into the development and neural control of speech in humans. Curiosity. Science for sciences sake. Achieve a better understanding of the species we share the Earth with. Almost any behavior performed by any animal may be interesting to study.

History of the study of animal behavior Paleolithic art from 40,000+ years ago provide indirect evidence that primitive humans observed the behavior of animals. Cave paintings portray herding animals in groups, animal migration, certain predators hunting in packs, and solitary animals alone. Blurton-Jones (1976) documented Kalahari bushmens (!Kung) knowledge of animal behavior Hunter-gatherer society, similar to most of

humans history. - Discriminated data from theory - Developed hypotheses - Used reasoned skepticism Introduction Why do animals do what

they do? Why do birds sing? How do sea turtles navigate the ocean to lay their eggs on the same beach where they were hatched? How do honeybees know when the hive needs more food? Image from

Image from Introduction Animal behavior asks what, why, and how. Animal behavior is also referred to as ethology. Scientists who study animal behavior are

called ethologists. Image from Introduction Animal behavior is centered around the ability to move. Image from

Animals seek food, water, shelter. Animals play with each other. Animals seek mates. Introduction In order for an animal to move, it uses muscles. So, in a way, we can think of animal behavior as

being dependent on muscle movement. Image from Introduction Behavior results as a reaction to a stimulus. A stimulus is a detectable change in the animals internal or external environment. Hunger.

Sound. Pain. Visual cues. Hormonal changes. Image from What is really happening Lets watch! As we watch, when the video pauses explain WHAT the animal is doing and WHY you think

the animal is doing this youtube.: 8kM Introduction Ethologists do not attempt to describe WHY an animal does a behavior before describing WHAT the animal is doing. This removes as much bias as possible good scientists dont want to just see what they want

to see. Need to make objective observations of animal behaviors, analyze the data statistically, then come to conclusions about WHY an animal behaves a certain way. Introduction For example, you see two gophers interacting with each other, rolling and hopping around, running to and from each other.

As a behavioral ecologist, you would first state the behavior you are observing. Once you made the observations about WHAT was happening, you could begin to determine WHY they are behaving that way. Introduction The behavior you observed could have been many different things.

Play. Mating rituals. Aggression, defending territory. Movie Break! Please get a piece of paper and copy the following: ANSWER FOR EACH ANIMAL PRESENTED: 1. What animal? 2. Where is it commonly found?

3. What is the smart behavior? 4. Is this behavior (in your opinion) instinctual, learned, or other? AT THE END OF THE VIDEO: What animal do YOU believe is the smartest and why? (10 sentences) Video: Worlds Smartest Animals Types of behaviors defined

Pet Activity: Warm Up On a separate sheet of paper: 1. Write the name of one of your pets. Is it a bird, dog, or cat? Other? 2. What behaviors do you think about when you think of your pet? Give a list of behaviors. Indicate if the behavior was genetic innate or learned. Behavioral Ecology

Behavioral ecology emphasizes evolutionary hypothesis: science as a process Based on expectation that animals behave in ways that will increase their Darwinian fitness (reproductive success) Stimuli : Review Certain stimuli trigger innate behaviors called fixed action patterns A fixed action pattern (FAP) is a highly

stereotypical, innate behavior that continues to completion after initiation by an external stimulus Learning Learning is experience based modification of behavior Some learning is due mostly to inherent maturation Habituation is learning involving loss of sensitivity to unimportant stimuli

Associative learning involves linking one stimulus with another Classical conditioning (Pavlov) Operant conditioning (Skinner) Operant Conditioning Animal learns to behave in a certain way through repeated practice Trial & error learning animal tests

conditions for desired response e.g. Skinner box Animal learns that a behavior gets a certain response e.g. rat presses lever, gets food Rhythmic Behaviors Rhythmic behaviors synchronize an animals activities with daily and seasonal changes in the environment

Governed by endogenous clocks, which in turn require exogenous cues to keep the behavior properly timed with the external environment Foraging Behavior Ecologists are using cost/benefit analysis to study foraging behavior Species may be generalists or specialists as foragers Animals modify behavior to favor a high

ratio of energy intake to expenditure Social Behavior Sociobiology places social behavior in evolutionary context Competitive Social Behaviors Agonistic behavior: competitor gains advantage by getting a limited resource like food or a mate

Natural selection: survival of the fittest Pecking order: dominance hierarchies with differently ranked individuals permitted options according to their status How natural selections leads to behavioral traits Variation exists: fraction of the species T. elegans (garter snakes) had ability to recognize slugs by chemoreception Increased fitness: That variation has

higher chance to survive and reproduce (genes passed on) Led to changes in the population over time Mating Behavior Promiscuity having many random mates Monogamy having only one mate Polygamy having a few, selected mates

Mating behavior Promiscuous Strong bonds Monogamous (sex morphology similar) Factors influencing evolution of mating systems -Need of young

-Paternity certainty - certainty increases with external fertilization Polygamous Polyandry (dimorphic Larger, Showy males)

Polygyny (dimorphic Larger, Showy females) Sexual selection Sexual selection (selective pressure) evolution of male behavior and anatomy Stalked-eyed flies Females more likely to mate with males with longer eyestalks

Why? Correlation between genetic disorders and inability to develop long eyestalks Social Interactions Social interactions depend on diverse modes of communication Some animals communicate with smells Honeybees communicate through dancing

Social learning Experience involves observing others Culture: information transfer through social learning Vervet monkey alarm calls Memes (Richard Dawkins) Altruistic Behavior Inclusive fitness accounts for most altruistic behavior Best explained by a kin theory, animals

try to maintain the survival of others who share their genes Altruism Cost/benefit of selfish vs. unselfish behavior? Altruism reduces individual fitness but increases fitness of others Reciprocal altruism Some animals behave altruistically toward

others who are not relatives. A wolf may offer food to another wolf even though they share no kinship. Such behavior can be adaptive if the aided individual returns the favor in the future. This sort of exchange of aid is called reciprocal altruism. Commonly used to explain altruism in humans. Agonistic behavior Ritualized

Winner gains access to resources Physical and behavioral characteristics involved Usually harm is not done Reasoning Analyze problem & devise solution using past experiences Most Dogs? E.g. No, cant unwind leash from tree

Most Horses? No Primates? YES! Sociobiology Human sociobiology connects biology to the humanities and social sciences Sociobiology (E.O. Wilson)

Connects human culture to evolutionary theory Social behaviors exist because they are perpetuated by natural selection Does not mean all social behaviors are hardwired (nature vs. nurture) Self-quiz Bees can see colors we cannot see and detect minute amounts of chemicals we cannot smell. But unlike many insects,

bees cannot hear very well. Which of the following statements best fits into the perspective of behavioral ecology? Possible answers A. Bees are too small to have functional ears. B. Hearing must not contribute much to a bees fitness. C. If a bee could hear, its tiny brain would be swamped with information.

Possible answers D. This is an example of a fixed action pattern E. If bees could hear, the noise of the hive would distract the bees from their work Challenge question Starting with the very first time a bee leaves the hive, it always flies in a circle

around the hive before heading out on a foraging trip. If it is prevented from seeing the hive when it leaves or if the hive is moved while the bee is gone, the bee is not able to locate the hive when it returns. Challenge Question For this reason, beekeepers know that a hive should only be moved .when? Why?

What part of the bees orientation flight behavior appears to be innate? What component shows learning? Temple Grandin

Who is she? What is her disability? What was her major break through at her Aunts cattle farm? How does this break through help Temple through college? What problems arise at college with her break through? How does she over come these problems? What does Temple realize when she first visits the feed lot? How does she go about her research? Why is her job at the newspaper critical for Temple? What does Temple design for the gentleman who comes to the paper?

What happens the 1st time they use her design? Why does this happen? How does Temple plan on fixing the industry? What break through does Temple have at the funeral? What break through does Temple have at the grocery store? How does this play a role in her slaughter house design? What does Temple do at the conference? How does her disability help her see? Behavioral biologists study the

actions of animals in their natural environments Behavioral biology is the study of what animals do when interacting with their environment Behavior can be interpreted in terms of proximate causes (immediate interaction with the environment) or ultimate causes (evolutionary differences) Early insights into the nature of behavior

came from studies by Nobel laureates Karl von Frisch, Konrad Lorenz, and Niko Tinbergen They were among the first experimentalists in behavioral biology Tinbergen and Lorenz performed experimental studies of innate behavior and simple forms of learning Behavioral ecologists are especially

interested in the ultimate causes of behavior, which are evolutionary Natural selection preserves behaviors that enhance fitness Niko Tinbergen Niko Tibergen was a pioneer in the field of animal behavior. He observed animals in their natural conditions,

then manipulated, or varied the conditions to see how the animals responded. Image from A classic Tinbergen experiment deals with the nesting behavior of the digger wasp The female wasp often excavates and cares for four or five separate nests

Tinbergen used this experiment to test his prediction that digger wasps use landmarks to keep track of the location of their nests Niko Tinbergen Tinbergen observed how a wasp called the beewolf finds its nest among other beewolf nests. He observed that the beewolf

would circle its nest in an everwidening circle before flying away to hunt. This behavior was an action pattern it was performed exactly the same way each time. Image from Niko Tinbergen After the beewolf flew off, Tinbergen would move certain

landmarks around the nests. When the beewolf returned, it was disoriented. So, by manipulating the beewolfs environment, Tinbergen came to the conclusion that the beewolf commits landmarks to memory to be able to find its nest when it comes back from hunting!

Image from In the experiment, Tinbergen placed a circle of pinecones around a nest opening Nest 1 Figure 37.1, Part 1

After the female flew away, Tinbergen moved the pinecones a few feet to one side of the nest opening When the female wasp returned, she flew to the middle of the circle of pinecones rather than to the actual nest opening Nest 2

No Nest Figure 37.1, Part 2 Tinbergen next arranged the pinecones in a triangle around the nest and made a circle of small stones off to one side of the nest opening This time the wasp flew to the stones Nest

3 No Nest Figure 37.1, Part 3 The wasp cued in on the arrangement of the landmarks rather than the landmarks themselves This experiment demonstrated that the

wasp did use landmarks and that she could learn new ones to keep track of her nest Niko Tinbergen Tinbergen had to describe and investigate WHAT the organism was doing before attempting to explain WHY.

Spatial learning and cognitive maps Spatial learning (Tinbergen): experience consists of spatial structures of the environment Use of landmarks. Reliable? Cognitive maps: Internal

representation of spatial relationships Recap: What? What was the experiment? Where? Where did it take place? When?

When was the behavior altered? Why Why was this a break through in the study of animal behavior? How? How would this discovery impact (for example) a bee keeper? Guidelines For Studying Animal Behavior

Ask clear, specific questions. Keep the question simple. Are you sure it is a question that can be easily answered? Put the question into the, What is the effect of _______ on ________? model. Formulate a complete hypothesis. Decide on the type of data you need to collect and how you will gather the data. Leave time to run statistical analyses on the data, and form conclusions based on your results.

Animal Behavior Influences and Actions 37.2 Behavior results from both genes and environmental factors Animal behavior often involves a combination of genetic programming (innate behavior) and environmental experiences (learning) both genes and the environment influence the development of behavioral phenotypes- just like any other traits

What influences behavior? Environmental pressures. Internal influences such as hormones. Learning. Genetic predisposition (sometimes referred to as instinct). * There isnt a definite combination of these influences that affects all behavior. * Proximate vs. Ultimate Causes

The question of WHY can have different answers. Proximate causes are related to internal changes in the animal. Hormones. Messages from the nervous system. Proximate means close. Ultimate causes are related to the survival and reproductive success of the animal. Ultimate means furthest, or utmost.

The gathering of nest materials by lovebirds has genetic and environmental components Single long strip carried in beak (Fischers lovebird)

Several short strips tucked under feathers (peach-faced lovebird) Tucking failure Strip in beak Hybrid behavior Figure 37.2

Proximate vs. Ultimate Causes An example incorporating both proximate and ultimate causes: Beldings ground squirrels. When males reach about two months old, they leave the burrow where they were born. It is an increase in testosterone, or a hormonal change that triggers this behavior. So, the proximate cause of the

nest-leaving behavior involves the increase in testosterone levels in the squirrel. Proximate vs. Ultimate Causes There is more to the story than just hormones! When males leave the nest, they avoid inbreeding with sisters or cousins, etc. Their offspring are therefore healthier. The male offspring inherit the same genetic

information that induces them to leave their nests at a young age. So, this behavior is passed on genetically, and it makes for a healthier population of squirrels. Avoiding inbreeding is therefore the ultimate cause of this early nest-leaving behavior. How to determine WHY action patterns. Action patterns are complex behaviors that are always repeated the same way by a species of animal.

We say that action patterns are stereotyped, since they occur the same way each time, and through to completion. After repeatedly observing action patterns, an ethologist can analyze the data statistically. Only then do we attempt to determine WHY a behavior is being done. 37.3 Innate behavior often appears as fixed action patterns Sign stimuli (often a simple cue in an animals

environment) trigger innate, essentially unchangeable fixed action patterns (FAPs) The genetic programming underlying FAPs ensures that such activities are performed correctly without practice Fixed action pattern (FAP) Sequence of unlearned behaviors Nearly unchangeable Carried out to completion

Sign stimulus (releaser) behavior Example of an innate behavior The graylag goose always retrieves an egg that has been bumped out of her nest in the same manner This is a fixed action

pattern She carries this sequence to completion, even if the egg slips away during the process Figure 37.3A More on Action Patterns The egg-rolling behavior of the greylag goose is a good

example of an action pattern. Niko Tibergen and another pioneer in ethology, Konrad Lorentz, originally observed this behavior. Image from More on Action Patterns The goose will roll an egg

that is outside the nest back into the nest in the same manner every time. Interestingly, the goose will do this with any round object placed outside the nest! Every time this action pattern is initiated, it is carried through to completion. Several key events in the life cycle of the

European cuckoo are determined by fixed action patterns Egg-laying behavior 1 2 3 Figure 37.3B

The behavior of the cuckoo hatchling ejecting the host eggs from the nest The feeding behavior of a foster mother to the cuckoo chick

Figure 37.3B 37.4 Learning ranges from simple behavioral changes to complex problem solving Learning is a change in behavior resulting from experience Habituation is one of the simplest forms of learning An animal learns not to respond to a repeated stimulus that conveys little or no information For example, birds eventually become

habituated to scarecrows and no longer avoid nearby fruit trees Table 37.4 37.5 Imprinting is learning that involves both innate behavior and experience Imprinting is irreversible learning limited to a sensitive period in an animal's life; it enhances

fitness by enabling rapid learning Example: Lorenz used the graylag goose to demonstrate imprinting. He took over the maternal role for a group of goslings Not all examples of imprinting involve parent-offspring bonding Although newly hatched salmon do not receive

any parental care, they imprint on the complex mixture of odors unique to the freshwater stream where they hatch This allows salmon to find their way back to the stream to spawn after spending a year or more at sea Imprinting plays an important role in song development for many kinds of birds Figure 37.5B

37.6 Many animals learn by association and imitation Associative learning is learning that a particular stimulus or response is linked to a reward or punishment These ducks have learned to associate humans with food handouts They congregate

rapidly whenever a person approaches the shoreline Figure 37.6A Trial-and-error learning is a common form of associative learning An animal learns to associate one of

its own behavioral acts with a positive or negative effect Figure 37.6B Imitation is learning by observing and mimicking the behavior of others This form of learning is not limited to a sensitive period Many predators, including cats and coyotes, seem

to learn some of their basic hunting tactics by observing and imitating their mother 37.7 Animal cognition includes problem-solving behavior Some animals exhibit problem-solving behavior Examples: chimpanzees and ravens Figure 37.7A, B

Animal Behavior ECOLOGICAL ROLES OF BEHAVIOR 37.8 An animal's behavior reflects its evolution Behavior is an evolutionary adaptation that enhances survival and reproductive success Behavior evolves as natural selection finetunes an animal to its environment

The hunting and reproduction behaviors of jaguars Nest location by digger wasps Imprinting of goslings 37.9 Biological rhythms synchronize behavior with the environment Animals exhibit a great variety of rhythmic behavior patterns Circadian rhythms are patterns that are repeated daily

Sleep/wake cycles in animals and plants Circadian rhythms appear to be timed by an internal biological clock In the absence of environmental cues, these rhythms continue But they become out of phase with the environment 12:12 (natural)

Constant darkness Figure 37.9A 37.10 Animal movement may be oriented to stimuli or landmarks Movement in a directed way enables animals to avoid predators migrate to a more favorable environment

obtain food find mates and nest sites TYPES of ANIMAL MOVEMENT 1. kinesis- simplest type of animal movement random movement in response to a stimulus 2. taxis- another simple type A more or less automatic movement directed toward or away from some stimulus Examples include rheotaxis (current) chemotaxis, and phototaxis

3. Some animals use landmarks to find their way within an area Directed movements Strong genetic influence Kinesis versus taxis Migration Migrating blackcaps kept in captivity exhibited behaviors of migratory restlessness at night Migratory and nonmigratory blackcaps mated and subjected to both environments

40% of offspring exhibited migratory restlessness 37.11 Movement from place to place often depends on internal maps Many animals formulate cognitive maps Internal representations of spatial relationships among objects in their surroundings (wasp example) Some animals undertake long-range migrations Examples: whales, sea turtles, birds, monarch butterflies

Animals navigate using the sun, stars, temperature gradients, landmarks, or Earth's magnetism Migrating gray whales use coastal landmarks to stay on course Arctic Ocean FEEDING GROUNDS Siberia

Alaska NORTH AMERICA Pacific Ocean Atlantic Ocean Baja California

BREEDING GROUNDS Figure 37.11A The indigo bunting learns a star map and navigates by fixing on the North Star Paper

Ink pad Funnelshaped cage Figure 37.11B Lets Read More About It Read the article on Indigo Buntings Answer the questions that follow: Put the experiment into the, What is the effect of

_______ on ________? model. Formulate a complete hypothesis in the IF/THAN format What is the type of data collected? How is the data gathered? What is the timing for the experiment ? (How long did they run?) What are the results? How can this influence studies of other migratory birds? How can human behavior alter this natural behavior in birds?

Bird Migration Video For each bird : What is the species? How far does it travel? Try to get an idea of where 2 birds mentioned in the video are from. Afterwards we will try to locate possible modes of remembrance during migration. Landmarks? Stars? Earths Magnetism? Other? 37.12 Behavioral ecologists use cost/benefit

analysis in studying feeding behavior Animals are generally selective and efficient in their food choices Some animals, such as gulls, are feeding generalists Other animals, such as koalas, are feeding specialists

Figure 37.12A, B The mechanism that enables an animal to find particular foods efficiently is called a search image Natural selection seems to have shaped feeding behavior to maximize energy gain and minimize the expenditure of time and energy This is the theory of optimal foraging

Foraging behavior Optimal foraging theory: behaviors exist as a compromise between benefits of nutrition and cost of obtaining food Predation must be a factor

Whenever an animal has food choices, there are a number of tradeoffs A bass can get more usable energy from minnows, but crayfish are easier to catch However, it may take more time to eat a crayfish because of its tough exoskeleton Figure 37.12C The kangaroo rat selects high-energy foods (seeds) in a manner that reduces time spent

above the ground, where it is exposed to predators Figure 37.12E Read more about it! Read the article and answer the following: Put the experiment into the, What is the effect of _______ on ________? model. Formulate a complete hypothesis in the IF/THAN format What is the type of data collected?

How is the data gathered? What is the timing for the experiment ? (How long did they run?) How many trials were needed? What are the results? How can this influence the feed industry for cattle? Animal Behavior SOCIAL BEHAVIOR AND SOCIOBIOLOGY

37.13 Sociobiology places social behavior in an evolutionary context Social behavior is defined as the interaction among members of a population The discipline of sociobiology studies social behavior in the context of evolution 37.14 Rituals involving agonistic behavior often resolve confrontations between competitors

Agonistic behavior is social behavior consisting of threats and combat that settles disputes between individuals in a population Agonistic behavior can directly affect an individual's evolutionary fitness The victor often gains first or exclusive access to mates Figure 37.14

37.15 Dominance hierarchies are maintained by agonistic behavior Many animals live in social groups maintained by agonistic behaviors Dominance hierarchy is the ranking of individuals based on social interactions Chickens establish a peck order Resources are often partitioned based upon the dominance hierarchy

Figure 37.15 37.17 Territorial behavior parcels space and resources Humans tend to space themselves out when they are close to others They establish what we might call personal territories

Figure 37.17A Many animals exhibit territorial behavior It is a form of social behavior that partitions resources A territory is an area that individuals defend and from which other members of the same species are usually excluded The size of the territory varies with species, the

function, and the available resources Territories are typically used for feeding, mating, and/or rearing young Territoriality is often maintained by agonistic behavior These New Zealand gannets maintain their individual nesting territories by calling and pecking at each other Figure 37.17B

Territoriality can enhance fitness if the benefits of possessing a territory outweigh the energy costs of defending one Territorial rights are proclaimed continually in a variety of ways Bird songs Noises, such as the bellowing of sea lions and the chattering of squirrels Defecation in open

areas Scent markers, such as urine Figure 37.17C Signals and communication Signal causes change in another organisms behavior Difference between communication and language

Pheromones (reproductive and nonreproductive behaviors) Auditory communication Songs of birds are partly learned Critical period Some insects, such as male Drosophila, produce a song even when reared in isolation Very little variation, why?

Zebra Danio Experiment Read the Article and Answer the following: Put the experiment into the, What is the effect of _______ on ________? model. Formulate a complete hypothesis in the IF/THAN format What is the type of data collected? How is the data gathered? What is the timing for the experiment ? (How long did they run?) How many trials were needed?

What are the results? How could this influence the sale of multiple Danio fish to someone in a pet store? Animal Behavior Quiz : 45 product points Define (20 points): ethology, animal behavior, stimulus, action pattern, proximate cause, ultimate cause, FAP, agnostic behavior Answer in complete sentences (5 points each) What influences behavior? What are the 5 types of learning?

Explain Nikos experiment (you can use drawings for support) Explain the indigo bunting experiment Give the theory of optimal foraging in a mathematical equation using words instead of numbers

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