Research Article

The Effect of Prey Density on Life Table Parameters of Hippodamia variegata (Coleoptera: Coccinellidae) Fed on Aphis gossypii (Hemiptera: Aphididae) under Laboratory Conditions

Table 1

Developmental time, longevity, and fecundity of Hippodamia variegata females reared on different densities of Aphis gossypii (all data ± SE).

Prey densityPreadult periodAPOPTPOPOviposition period (day)Fecundity (eggs/female)Female longevity (day)

20
40
60
80
100

APOP: adult preovipositional period; TPOP: total preovipositional period (from egg to first oviposition). Within columns, values followed by the same letter do not differ significantly using the Duncan-LSD procedure.