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Variations in Foraging Behaviour 45

Table 4.1.


Genetically fixed versus unfixed (plastic) foraging behaviour in parasitoids and the foraging situations that affect the expected


occurrence of each type.


Extent of differences between host and habitat situations and the consistency in availability of each situationDifferences small;

Differences large;

Differences small;

Differences large;

Type of selection

availability consistent

availability consistent

availability inconsistent

availability inconsistent

Selection for diverse fixed adaptations

Low

High

Low

High

Selection for individual plasticity

Low

Low

High

High

Resultant type of foraging behaviour

Less need for genetic

Genetically different and

Adjustable through learning Genetically div

ersified with

differences or plasticity

fixed for each type situation

as situation necessitates

overlay of plasticity
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