Table 1. Summary of analyses of variance of regressions for jellyfish (J; raw data), jellyfish standardised for carbon content (SJ), and other pelagic animals (OPA).
| Variable | Group | Log a | b (±SEM) | R2 | ANOVA of regression (P) | Groups compared | Equality of slopes (P) | ANCOVA (P) | AIC (Same slope & intercept) | AIC (Same slope, sep. Intercept) | AIC (Sep. slope, sep. Intercept) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Carbon content | J | -0.03 | 0.32 ± 0.06 | 0.93 | <0.001 | J vs OPA | 0.484 | <0.001 | 39.628 | -78.69* | -76.69 |
| (mg ind-1) | OPA | -0.60 | 0.33 ± 0.0 | 1 | <0.001 | ||||||
| Nitrogen content | J | 0.16 | 0.32 ± 0.02 | 0.88 | <0.001 | J vs OPA | 0.627 | <0.001 | 42.16 | -30.30 | -28.3*0 |
| (mg ind-1) | OPA | -0.38 | 0.33 ± 0.01 | 0.97 | <0.001 | ||||||
| Respiration | J | 9.27 | 2.57 ± 0.13 | 0.90 | <0.001 | J vs OPA | 0.247 | <0.001 | 234.54 | 71.36* | 73.30 |
| (ml O2 ind-1 h-1) | SJ | 10.69 | 2.47 ± 0.12 | 0.89 | <0.001 | SJ vs OPA | 0.046 | NA | 64.86* | 66.86 | 67.29 |
| OPA | 10.72 | 2.72 ± 0.05 | 0.98 | <0.001 | |||||||
| Excretion | J | 9.04 | 2.60 ± 0.53 | 0.58 | <0.001 | J vs OPA | 0.923 | <0.001 | 102.96 | 79.95* | 81.95 |
| (μmol NH4 + ind-1 h-1) | SJ | 10.47 | 2.50 ± 0.51 | 0.58 | <0.001 | SJ vs OPA | 0.784 | 0.001 | 84.28 | 78.22* | 80.22 |
| OPA | 11.45 | 2.66 ± 0.19 | 0.95 | <0.001 | |||||||
| Max specific growth | J | 10.58 | -0.35 ± 0.12 | 0.25 | 0.007 | J vs OPA | 0.452 | <0.001 | 44.89 | 31.39* | 33.39 |
| (d-1) | SJ | 10.38 | -0.34 ± 0.11 | 0.29 | 0.007 | SJ vs OPA | 0.389 | 0.009 | 32.42 | 30.31* | 32.31 |
| OPA | 10.03 | -0.47 ± 0.09 | 0.62 | <0.001 | |||||||
| Longevity (d) | J | 13.47 | -0.25 ± 0.12 | 0.18 | 0.046 | NA | |||||
| OPA | 14.14 | 0.15 ± 0.14 | 0.04 | 0.295 | NA | ||||||
| Swimming velocity | J | 0.18 | 0.30 ± 0.13 | 0.19 | 0.026 | J vs OPA | <0.001 | NA | 98.0 | 81.86 | 68.44* |
| (cm s-1) | OPA | 0.65 | 0.90 ± 0.05 | 0.91 | <0.001 | ||||||
| Reynolds number | J | 2.15 | 1.29 ± 0.12 | 0.83 | <0.001 | J vs OPA | <0.001 | NA | 96.73 | 78.94 | 64.09* |
| SJ | 1.77 | 1.32 ± 0.12 | 0.84 | <0.001 | J vs SJ | 0.872 | 0.002 | ||||
| OPA | 2.63 | 1.89 ± 0.05 | 0.98 | <0.001 |
NA = analysis not applicable. Relationships for carbon and nitrogen content take the form of Log ESD (cm) = log a + b × log (C or N) (g ind-1). Relationships for other variables take the form of Log Y = log a + b × log ESD (cm). AIC = Akaike Information Criterion. * indicates the best model (i.e. lowest value of AIC).
When regressions were significant, slopes and intercepts were compared between raw jellyfish and other pelagic animals and, subsequently between jellyfish standardised for C content and other pelagic animals.