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Table 3 Difference between the selection lines in body mass (BM), metabolic rate (RMR) and oxidative damage (ROMs) according to breeding status

From: Artificial selection reveals the energetic expense of producing larger eggs

Trait Model Line Status Line x Status Replicate Age Tarsus Length Body Mass RMR
   χ 2 P χ 2 P χ 2 P χ 2 P χ 2 P χ 2 P χ 2 P χ 2 P
BM a - - - - 5.29 0.021 0.19 0.665 0.88 0.347 10.73 0.001 - - - -
RMR a - - - - 4.82 0.028 0.21 0.646 0.00 0.947 2.17 0.141 - - - -
  b 0.16 0.688 30.57 <0.001 1.10 0.294 0.12 0.734 0.45 0.503 - - 30.01 <0.001 - -
ROMs a 0.06 0.802 1.85 0.174 3.08 0.079 3.08 0.079 2.00 0.158 1.07 0.300 - - - -
  b 0.28 0.596 1.87 0.172 3.20 0.074 3.44 0.064 1.69 0.193 - - 0.02 0.880 - -
  c 0.55 0.459 0.27 0.607 3.19 0.074 3.67 0.056 1.68 0.195 - - - - 1.14 0.287
  1. Significant results are displayed in bold. For metabolic rate and oxidative damage, several models were run, including a) tarsus length, b) body mass and c) metabolic rate as covariates. In all models df = 1