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Table 4 Models applied to survival data from the emamectin benzoate challenge, ranked by AIC

From: A common-garden experiment to quantify evolutionary processes in copepods: the case of emamectin benzoate resistance in the parasitic sea louse Lepeophtheirus salmonis

Model Fixed effects Random effects df AIC ΔAIC
eb.m13 Family, Exposure time, Gender - 19 2 084.7 0
eb.m12 Family, Exposure time - 18 2 099.3 14.6
eb.m11 Family - 17 2 109.4 24.7
eb.m1 Exposure time, Gender, Group (1xH) Family 7 2 111.9 27.2
eb.m2 Exposure time, Gender, Group (2xH) Family 8 2 113.4 28.7
eb.m4 Exposure time, Gender, Dam Family 6 2 115.5 30.8
eb.m3 Exposure time, Gender, Sire Family 6 2 117.6 32.9
eb.m5 Exposure time, Gender Family 4 2 125.0 40.3
eb.m6 Exposure time, Group (1xH) Family 6 2 126.0 41.3
eb.m7 Exposure time, Group (2xH) Family 7 2 127.5 42.8
eb.m9 Exposure time, Dam Family 5 2 130.1 45.4
eb.m8 Exposure time, Sire Family 5 2 132.2 47.5
eb.m10 Exposure time Family 3 2 139.5 54.8
eb.m14 Exposure time - 2 2 537.9 453.2
  1. GLMs and GLMMs testing for the relative influence of different background covariates on the EB trial results. The models are ranked based on AIC, where a lower AIC value reflects a better model fit to the data.
  2. Response variable: Status after the EB challenge; living or immobilised/dead.
  3. Covariates (fixed and/or random effect variables): Family, Group (1H), Group (2H), Sire and Dam = as listed for Table 3. Exposure time = 20, 21, 22 or 23 hours of EB exposure. Gender = female or male.
  4. Test results: degrees of freedom (df), AIC values and changes in AIC (ΔAIC).