lecture 18 - communication

Question 1

what is communicatoin

Answer 1

transfer of info from signaller to receiver

Question 2

what does communication involve

Answer 2

more than 1 individual

Question 3

what do krebs and dawkins predict when communication is of the manipulator type

Answer 3

signals employed should be exaggerated

Question 4

what do krebs and dawkins hyopothesize when communication is cooperative

Answer 4

natural selection should favor less exaggerated signals

Question 5

what should natural selection favor in terms of communication and why

Answer 5

minimizing conspicuousness of comm bc signaling is costly

Question 6

what form of communication is typical when finding/securing mate

Answer 6

vocal communication

Question 7

what should natural selection favor in terms of communication and honesty

Answer 7

favors females that only pay attention to honest-signaler men instead of the manipulators (need to use the honest signals)

Question 8

whats an example of honest-signaling in toads

Answer 8

deep croaks only produced by large male toads because of physiology and since they can’t fake those calls then female toads listen and look for deep croaks so they can get with the big guys

Question 9

when are communication systems favored

Answer 9

when they help solve problenms that animals encounter in natural environments

Question 10

what is the waggle dance

Answer 10

disovered by von frisch where bees perform a dance when coming back from foraging so the other bees learn the distance, direction and odors of flowers that need to be exploited

Question 11

how does bee convey topographical info

Answer 11

the direction they are pointing in indicates food in respect to sun

Question 12

how does the bee communicate how far away the food is

Answer 12

the length of the dance, ever extra 75 ms is additional 100 m from hive

Question 13

what difference dances are used for different distances

Answer 13

round dance –> <20 m
sickle dance –> >20 m, < 60 m
waggle dance –> >60 m

Question 14

how does temperature affect waggle dance

Answer 14

hive temperature during dev affects waggle dance.
warmed temps –> increased number of figure0eight, colder temps –> worse learned and less adept at communicating own ingo

Question 15

how do ants communicate about foraging related ingo

Answer 15

chemical markers and sound production through vibrations

recruitment pheromones are placed along trails to leaves and then when they are in vicinity of leaves they rely on stridulation to determine the leaves on which to work

Question 16

when do downy woodpeckers give alarm calls and what is this called

Answer 16

when with a pair of the opposite sex

mate investment

Question 17

how alarm calls used in male vervet monkeys

Answer 17

used when encountering a new troop so the intergroup encounter is avoided (deceptive manner)

Question 18

how do tori antelopes use deceptive communication

Answer 18

males give false alarm calls to keep sexually reproductive females within their lek so they can mate with her