Recognition mechanisms

• Spatial location

  • e.g. treat offspring in nest as own

• Familiarity

  • Individual level recognition requires learned familiarity and requires complex signature signals

• Phenotype matching

  • Ability to assign stimuli to classes of relatedness relative to the receiver
  • Referent can be a known relative or oneself

• Allele matching

  • Requires hypervariable locus with olfactory signal

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