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Table 1 Multivariate effects on diet of blackfish. The MANCOVA is based on three factors (waterbody, season, and sex), two covariates (SL, trapping hours), and nine response variables (nine prey categories whose % IRI ≥ 1). SL = standard length, ns = not significant

From: Trophic ecology of introduced populations of Alaska blackfish (Dallia pectoralis) in the Cook Inlet Basin, Alaska

Variable Pillai’s Trace F Hypothesis df Error df p
SL 0.063 1.82 9 244 ns
Trapping hrs. 0.062 1.78 9 244 ns
Site 0.287 4.56 18 490 < 0.001
Season 0.231 3.56 18 490 < 0.001
Sex 0.061 1.76 9 244 ns
Site × season 0.413 3.16 36 988 < 0.001