TABLE 1.
Fecundity (1st and 2nd brood) | Size at maturity (mm) | Age at maturity (Days) | Mortality | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
df | p‐value |
|
df | p‐value |
|
df | p‐value |
|
df | p‐value | ||||
2‐way ANOVA | |||||||||||||||
Population | 0.693 | 2 | 0.707 | 1.520 | 2 | 0.468 | 0.481 | 2 | 2.521 | 3.842 | 2 | 0.147 | |||
Algae | 1027.828 | 1 | 0.000 | 603.773 | 1 | 0.000 | 94.404 | 1 | 0.000 | 0.225 | 1 | 0.636 | |||
Pop*Algae | 1.410 | 2 | 0.494 | 9.454 | 2 | 0.009 | 3.860 | 2 | 0.145 | 0.155 | 2 | 0.925 | |||
Population | 1.856 | 2 | 0.395 | 6.838 | 2 | 0.033 | 0.430 | 2 | 0.806 | 3.083 | 2 | 0.214 | |||
Insecticide | 4.894 | 1 | 0.027 | 44.285 | 1 | 0.000 | 11.202 | 1 | 0.001 | 11.430 | 1 | 0.001 | |||
Pop*Insecticide | 5.677 | 2 | 0.059 | 5.300 | 2 | 0.071 | 1.807 | 2 | 0.405 | 1.431 | 2 | 0.489 | |||
3‐way ANOVA | |||||||||||||||
Population | 21.252 | 2 | 0.000 | 6.589 | 2 | 0.037 | 3.979 | 2 | 0.137 | 9.634 | 2 | 0.008 | |||
Algae | 493.042 | 1 | 0.000 | 420.573 | 1 | 0.000 | 58.522 | 1 | 0.000 | 7.574 | 1 | 0.006 | |||
Insecticide | 12.094 | 1 | 0.001 | 0.361 | 1 | 0.548 | 17.599 | 1 | 0.000 | 3.569 | 1 | 0.059 | |||
Pop*Algae | 2.280 | 2 | 0.320 | 5.155 | 2 | 0.076 | 3.109 | 2 | 0.211 | 0.216 | 2 | 0.898 | |||
Pop*Insecticide | 1.452 | 2 | 0.484 | 1.893 | 2 | 0.388 | 2.206 | 2 | 0.332 | 1.824 | 2 | 0.402 | |||
Algae*Insecticide | 7.591 | 1 | 0.006 | 1.617 | 1 | 0.203 | 8.274 | 1 | 0.004 | 0.159 | 1 | 0.690 | |||
Pop*Algae*Insect | 1.072 | 2 | 0.585 | 0.158 | 2 | 0.924 | 7.747 | 2 | 0.021 | 1.646 | 2 | 0.439 |
Univariate analysis of variance (ANOVA) testing the effect of population (P), treatment (algae or insecticide or a combination of both), and their interaction terms (T*P) on fecundity, size at maturity, age at maturity, and mortality for single stressors (2‐way ANOVA) and combination of stressors (3‐way ANOVA). Significant p‐values are in bold. The statistics in this table support plots in Figure 2.