Review Questions for Exam 1 Flashcards
What is ethology? Applied ethology?
Ethology - study of behavior, it’s cause, and biological function
Applied ethology - study of behavior of domestic animals, animals managed by humans
What was the main difference between 20th century US/behavioristic vs European/naturalistic researchers?
US researchers: behavioristic approach
- controlled experiments in laboratory setting
- B.F. Skinner –> Skinner Box: mechanism of learning an acquisition of behavior
European researchers: naturalistic approach
- observations of animals in the wild
- instinctive, innate, and adaptive behaviors
What are Tinbergen’s 4 questions? What does each mean?
- What is the cause of the behavior?
- How does the behavior function during ontogeny? (learned experiences)
- What is the function of the behavior?
- How does the behavior develop during phylogeny? (evolution)
What is the difference between comparative and social ethology?
Comparative ethology - looking at animals as individuals
Social ethology - social groups of animals, social structure
What are areas of concern related to applied ethology?
animal welfare, behavior controls, optimizing production, behavioral disorders
What is nature vs. nurture?
Nature: instincts, genetics
Nurture: environment raised in, learned behavior
How does genetics control behavior?
- Genes carry instructions for behavior
- Genes do not predetermine animal’s behavior
- Controlled by 1 to many different genes
- Gene expression is influenced by environmental factors
Why is there so much phenotypic and behavioral variation between dog breeds? How is
this different from other domesticated animals?
The phenotypic radiation of the dog has been the product of restricted gene flow and generations of intense artificial insemination.
Unique / different because they have been developed for highly specialized tasks such as herding, hunting, and retrieving.
Be able to use some of the dog examples from the article (livestock herding, livestock
guarding, etc.) to explain the genetic foundation of behavior as it relates to what we covered
in class.
Herding breeds strongly express predatory motor patterns such as stalking. Both types of herding have been developed to work with livestock; however they present in radically divergent behavior responses
What are some methods for phenotyping behaviors?
- Owner directed survey - owner reports behavior
- Test battery - dogs are exposed to novel stimuli, responses recorded
- Expert rating - vets/ professionals rate breeds based on experience
- Observation - observing dogs in natural states
What principles are required for behaviors to evolve?
Variation must exist in behavior
Some variation must be of genetic origin
Natural selection of behavior occurs
What is fitness? How is it related to the function of behaviors and the evolution of
behaviors?
Fitness - reproductive success
Function of behaviors - survival of the individual
How are optimal behaviors determined? Be able to work through the pros/cons of an
example.
Must weigh the costs and benefits of performing a task
–> optimal behavior maximizes the difference between benefit and cost
What are the common characteristics of animals chosen for domestication?
Herbivores and omnivores
Physical traits
- size
- meat
Behaviors
- social
- no strong mating bond
How did domestication and breeding programs change behaviors of the animals?
Behavior differences are subtle
No new behaviors creates
Modify stimulus thresh-hold
- Basenji
Few behaviors have completely dissappeared
What is the difference between the autonomic and somatic nervous systems?
Autonomic: controls homeostasis, mostly involuntary
Somatic: voluntary control of movement, reception of external stimuli
What does the sympathetic nervous system do?
Sympathetic: functions when quick actions are needed, “fight or flight”
- acetylcholine secretion, leads to the secretion of epinephrine & norepinephrine
- diverts blood flow from the GI tract
- accelerates heart rate
- widens bronchial tubes
- causes pupil dilation, goose bumps, and perspiration
What does the parasympathetic nervous system do?
Parasympathetic: “rest and digest,” slows heart rate
- increases intestinal activity
- stimulates salivary gland secretion
- constricts pupil and lens
How do emotions affect behaviors and motivation?
Emotions process within CNS that bias behavioral options
Information relayed to different areas of brain, including brain stem
Course of behaviors determined and carried out.
- Attack, flee, rest
What are the types of neurons? What signals do they send? What is the difference
between a monosynaptic signal and a polysynaptic signal?
Neuron- type of nervous system cell that processes/ translates messages through electrochemical signals
Monosynaptic- uses several neurons, more complex. Sensory neuron synapses with motor neuron. Motor neuron acts on effector.
Polysynaptic- most common, at least one interneuron between sensory and motor neurons. More interneurons, increase behavioral flexibility
What does it mean relative to the complexity of the behavior if there are more synapses in
the signal? How do divergence and convergence affect the complexity of the behavior?
Parallel processing- signal goes along multiple pathways that perform different types of analysis simultaneously
- Divergence
Converge and act of effector
- Convergence`
What is motivation? What types of behaviors are their motivations for? Does it matter
how the behavior is carried out?
Motivation - internal process that causes and directs behavior. Interaction of internal and external variables.
- Hunger/ desire to eat.
The motivation of behavior is beyond needs for survival.
- include motivation to play explore, etc.
Mode of expressing behavior is important
- species-specific behavior
What are reflexes? Why are they the same across the species?
Reflexes - automatic response.
Similar in individuals in a given species, situation predictable.
- only one response needed
- stereotypic behavior
What are modal action patterns?
Fixed action patterns
Sequence of behaviors triggered initially by a particular stimuli
What affects motivation? Apply to an example, like eating or drinking
Varies over time. Highest motivation inhibits others.
Motivation to drink – depends on when they last had drink, are they dehydrated, do they have visualization of water?
How do these behavior types interact? How can they be complementary?
Motivation changes reactions. Emotional state changes intensity. Hormones change behaviors.
Complementary process
- caustic substance gets on paw, neuron sends 2 signals