Table 1 Percent survival (± SEM) of control and treatment larvae of three coccinellid species surviving two 24-h exposures to residues of copper sulfate and petroleum oil and their mean developmental times (± SEM).

Percent survival X2 P Developmental time (days) F df P Species Control Treatment Control Treatment Curinus coeruleus 95.0 85.8 0.736 ns 16.4 ± 0.15 16.5 ± 0.20 0.148 1,105 0.701 Harmonia axyridis 100 100 0.000 ns 09.2 ± 0.15 09.4 ± 0.07 1.000 1,118 0.319 Olla v-nigrum 95.0 95.0 0.000 ns 08.2 ± 0.09 08.9 ± 0.15 16.919 1,112 <0.001