Please Do Now List three kinds of animal communication and a potential downside of each You will have to do a little thinking Agenda Notes on Deceitful and Honest Communication ReadingAnnotation ID: 257023
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Slide1
AIM: SWBAT describe why deceitful communication (lying) has evolved in the animal world
Please Do Now: List three kinds of animal communication, and a potential downside of each. (You will have to do a little thinking). Slide2
AgendaNotes on Deceitful and Honest Communication
Reading/AnnotationSlide3
FYIThe next exam will be Tuesday
It will be short (35-40 min), but still count as a
test grade
We will review MondaySlide4
CommunicationInteractions between the animals producing the signal and those receiving the signal are very complex
Information is shared in any communication, but it does not have to be accurate informationSlide5
Interspecific vs. Intraspecific communication
The breakdown between honest and deceitful communication is partially related to whether we are discussing
interspecific
communication or
intraspecific
communication
Interspecific
communication = communication between individuals of different species
Intraspecific
communication = communication between members of the same speciesSlide6
Why be honest in interspecific communication?
Individuals can provide inaccurate or misleading information (lie) to increase their fitness
Honesty will prevail in
interspecific
communication if both parties benefit (ex. Gazelle and cheetah)Slide7
Examples of deceitful interspecies communication
Anglerfish lure
Predatory
photuris
fireflies
mimicrySlide8
Why lie in Intraspecific Communication?
Deceit Increases the fitness of the individual liar at the expense of the other members of the species
It often takes
l
ess resources to achieve a goal if you communicate dishonestly than it would to do it the old fashion way Slide9
Examples of intraspecific liar
Mantis shrimp
Bluegill sunfishSlide10
Why trust any communication then?
Scientist have discovered that lying only works when it is relatively rare.
In species where there was too much lying, other members of the species have evolved not to trust each other, thus there is no opportunity to lie.
Animals “trust” signals because more often than not it pays to respond to signals normally