insect behavior midterm 1

what kind of skeleton is an insect body

exoskeleton

what kind of eyes in an insect body

compound

how many legs in an insect

six

what are the body segments of an insect body

head, thorax, abdomen

how many pairs of antennae in an insect

one

how many species are insects

one million

when did insects evolve

400-500 million years ago

holometabolous insects

under metamorphosis

hemimetabolous insects

undergo molts but no metamorphosis

what is behavior

coordinated responses of living organisms to internal/external stimuli

afferents

inputs to CNS

efferents

outputs from CNS

homologous traits

share common function and ancestor

analogous traits

similar function but not a shared evolutionary origin

what did von frisch focus on

sensory biology honey bees

what did lorenz focus on

imprinting in birds

what did imprinting allow birds to do

learn species to copy for mating

what did von frisch discover

dance language

what are fixed action patterns elicited by

sign stimulus

what is a supernormal stimulus

exaggerated version of the stimulus and elicits a stronger response

what did tinbergen focus on

stimuli-response relationships

what are tinbergens 4 questions

causation, development, function, evolution

what is proximate

how the behavior happens

what is ultimate

why the behavior occurs

what is internal validity

questions about the sample

what is external validity

questions about interpretations and generalizations of the sample

what are the different types of measurements

events, states, frequency, rate

what is events vs. states

determined by duration of behavior

what is the duration events

instantaneous

what is the duration of states

long

what is frequency

number of occurrences

what is rate

per unit time

what is regular sampling

move through all individuals in a class

what is irregular sampling

individuals chosen based on some behavioral criteria