Explanatory variables examined to predict outcomes of challenges involving 100 Aphidius ervi wasps on 600 Acyrthosiphon pisum individuals belonging to 10 field-collected clones from either alfalfa or red clover.

Behaviors are listed with their% occurrence recorded for both wasps (wsp.) and aphids (aph.). Behaviors wsp.mve and aph.exc were excluded to take into account colinearity imposed by observation time being limited to 5 min. See text for details.