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12 Cards in this Set
- Front
- Back
What is the definition of kin recognition?
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any differential treatment of conspecifics (related things) with respect to relatedness
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What's an example of this in nature (an animal that does this)?
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Seasalamander puts food in mouth and if tastes like kin, spits out
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Describe the components of kin recognition:
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PRODUCTION COMPONENT:
nature and development of the recognition cue |
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2.
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PERCEPTION COMPONENT:
development of kin recognition template, sensory detection of the recognition cues AND then a series of steps used for assessing similarity b/w template and recognition cues |
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3.
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ACTION COMPONENT:
nature and determinants of the action taken by the actor (determinator)that already assesed a given degree of similarity b/w its recognition template and the recognition cues. |
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Name all 4 mechanisms of recognition. (in the following cards, explain the mechanism and problems associated with it)
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1. recognition ("green beard") alleles
2. spatial location 3. association 4. phenotype matching |
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RECOGNITION ALLELES
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production, perception, and action components ALL encoded by a single gene or set of tightly linked genes-->the recognition template is not learned
PROBLEM: what are the chances? genes unlinked to green beard genes are going to try to snuff out the green beard gene b/c an individual could choose kin or non kin depending on if individual has g.b. gene or not...not good for other genes. EVIDENCE: fire ants: queens who had PGA gene would not kill other queens w/ PGA gene EVEN if they arent kin. |
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SPACIAL LOCATION
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template learned from cues associated with locations, NOT phenotype of individuals
Ex:bank swallow- parent/offspring recognition test: switch baby birds to different nest-> parent feeds any nestling identically if in same location |
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ASSOCIATIONAL
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recognition ONLY of familiar individuals--early rearing process (only individuals it encountered early)
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PHENOTYPE MATCHING
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actor learns generalized cues of some referent (itself, its nest, some subset of kin), then later matches template to a recipient's cues..permits recognition of unfamiliar kin (usually a general cue like smell)
EXAMPLE: Belding ground squirrels- "armpit effect" smell self then smell other to distinguish b/w full and 1/2 sisters Good whenever possibility of running into kin you weren't reared to ex: large pops of insects |
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What is the mechanism underlying nestmate recognition in eusocial paper wasps?
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Production Component: cues are cuticular hydrocarbons
Perception component: recognition odors learned from nest, not from nestmates |
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What are 2 possible errors in kin recognition? What should an animal do about this?
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1) accept non-kin
2) reject kin BUT if you try to decrease one error, you increase the other so the animal has to decide...it depends on: 1) benefits of accepting kin and rejecting non kin 2) fitness consequences of erroneously accepting non kin and rejecting kin 3) relative frequencies of interaction with kin and non-kin. so the kin acceptance threshold shifts. |