Results of a 3-factor analysis of variance of oviposition during a 2 week period by elm leaf beetles fed leaves harvested from elms exposed for 9 weeks to simulated acid rain, ozone and sulfur dioxide treatment combinations.
Source | Preoviposition period | Eggs/female | Eggs/ovipositing female |
---|---|---|---|
Elm hybrid (H) | F(1,1 81) = 8.0**a | F(l,224) = 7.0** | F(1,181) = 12.2** |
Acid rain (AR) | F(1,181) = 0.0 | F(1,224) = 21.9** | F(1,181) = 15.0** |
Fumigation (F) | F(3,181) = 1.5 | F(3,224) = 2.5 | F(3,181) = 2.8* |
HxAR | F(1,181) = 0.4 | F(l,224) = 0.2 | F(1,181) = 1.4 |
HxF | F(3,181) = 1.6 | F(3,224) = 0.9 | F(3,181) = 0.3 |
ARxF | F(3,181) = 3.6* | F(3,224) = 4.3** | F(3,181) = 2.2 |
HxARxF | F(3,181) = 4.2** | F(3, 224) = 3.4* | F(3,181) = 5.3* |