Animal communication
18 important questions on Animal communication
What is the definition of SIGNALS?
-> signals play a key role in social networks/signals are specifically evolved/signals transfer information/signals provide benefits to both signaler and receiver
-> expect that signals provide honest information
What are the cost of signaling?
- physical status
- social punishment when dishonest
Why are sounds better than visual signals?
-> signals like sound have evolved to transmit information effectively
-> sound signals are adapted to specific acoustic transmission properties of the habitat + to its noise levels
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What are 3 compex signals?
-> each predator has its own signal, where animals respond differently to different predators
-> ! many animals have alarm calls that differ between predators, but this doesn't mean they are referential, perhaps the call simply reflects the urgency of the threat !
2. Signature signals = signals referring to specific individuals (human names)
3. Syntax = rules about the order of signals + how this affects meaning
What are the 2 transmission characteristics of the environment (sounds)
-> spherical spread
-> excess attenuation
2. Degradation (decline quality or clarity of sound signal)
-> frequency-dependent attenuation
-> reverberation - sound smears out in time
What are the 4 modes of communication?
2. Acoustic communication
3. Olfactory communication
4. Tactile communication
What can you tell me about VISUAL COMMUNICATION?
-> visual signals have 3 things in common
1. Fast
2. Long-range
3. Restricted to line of sight
- common across group animals + highly diverse
What can you tell me about ACOUSTIC COMMUNICATION?
1. Fast
2. Long-range
3. Temporary -> acoustic communication requires constant energy to maintain
4. Not line of sight -> acoustic signals originate from their source
- calls and song
What can you tell me about OLFACTORY COMMUNICATION?
1. Slow
2. No time structure
3. Not line of sight -> olfactory signals helps to reduce the locate ability of the sigma
4. Persistent
- smells
What can you tell me about TACTILE COMMUNICATION?
1. Cant occur across a distance, only by direct physical contact
2. Fast
3. Temporary (gestures)
4. Between 2 individuals (one-to-one)
- occur during mating displays, fights, and allogrooming
What can you tell me about HONEST SIGNALS?
-> aligned interest = honest signal
-> higher the cost of the signal, higher the likelihood that the signal is honest
What can you tell me about DISHONEST SIGNALS?
-> benefits signaller, 'harmful' to receiver
-> dishonest signals take advantage of honest signals
-> conflicting interest = dishonest signal
What are 4 rerasons why we would expect signals to be honest?
2. Index signals -> signals that simply cannot be faked
3. Handicap signals -> impose a higher cost on dishonest signals
4. Conventional signals -> easily faked signals can still be honest if receivers can regularly verify the accuracy + punish dishonest signals
In the signalers point of view, communication evolves?
- to present a message (signal) beneficial to the signaler
In the receivers point of view, communication evolves?
- to separate honest from dishonest signals
What is the definition of COCKTAIL PARTY EFFECT? (noise)
What is the definition of the LOMBART EFFECT? (noise)
What is the definition of a communication network?
= the mixture of signalers, receivers, and eavesdroppers
The question on the page originate from the summary of the following study material:
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- Never study anything twice again
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