Zależności biotyczne wśród korników

Severe competition between individuals of the same and different species significantly reduces their reproductive success. Individuals that can avoid competition whenever possible by means of genetically controlled behavioural mechanisms are naturally selected. Behavioural mechanisms for avoiding competition may operate in at least five ways: (1) avoid attraction to and landing in areas with high attack density, (2) leave these areas after landing, (3) avoid initiating an attack near others, (4) avoid tunnelling into other gallery systems, and (5) re−emerge if densities under bark are too high.