In the no-choice and choice experiments, no consistent, significant
differences were observed in the number of eggs oviposited
with respect to host strains or host plants (Table 2). One significant
interaction between strains and host plants (F = 4.43; df = 1, 124;
P < 0.05) was found in the no-choice study, with wasps laying more
eggs on corn strain larvae fed stargrass than the other treatments
(Table 2A). However, this bias was not repeated in the choice study
(Table 2B). In all cases, wasp eggs were laid primarily between the
first to fourth abdominal segments and less frequently in the
thoracic segments (Table 2C), corroborating previous reports of
egg positioning (Murúa and Virla, 2004 and references therein).