13566586
Description
Flashcards by J yadonknow, updated more than 1 year ago
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Created by J yadonknow
about 6 years ago
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| Question | Answer |
| Tinberg's 4 "why" questions | Causation (mech) Ontogeny (Devo) Function (adaptive advantage) Phylogeny (evo history) |
| Why do birds sing at dawn? Causation | Daylight/hormones/rival song/syrinx |
| Ontogeny | Song learning, development of larynx |
| Function | Attracting a mate, territory defence |
| Phylogeny | Shared descent/ecology |
| Pitfall of studying behaviour | Anthropomorphism |
| Info provided by communication | Aggression Identity Social-info |
| Communication definition | Passing of info from sender to receiver |
| Signal definition | Feature of an animal that's evolved to alter behaviour of the receivers |
| Cues definition | Any feature that can be used as a guide for future actions |
| How do signals evolve? | Probably by ritualisation of existing cues |
| Cue revealing autonomic stimulation | Respiration - operculum flapping |
| Ritualisation of cues revealing behaviour | Intention movements - fight/flight Self-protective movements - Scalp retraction in primates |
| "Displacement" behaviour | Interruption of one behaviour with another seemingly irrelevant behaviour |
| How ritualised signals differ from cues (4) | 1. Conspicuousness 2. Redundancy (e.g. repetition) 3. Stereotype. 4. Altering components |
| How ritualisation aids communication | 1. ^ cost = cost ensures honesty 2. ^ Efficacy = ^ info transfer speed 3. ^ ability of signallers to manipulate receivers |
| Signal evolution | Evolve to maximise transmission and minimise eavesdropping Predators drive selection for private frequencies |
| Uses of signalling | Signal danger Communicate w/ predator |
| Aposematism | Conspicuous warning of unprofitability |
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