Table 2.

Description of the 6 models applied to the two variables

Code	Method	Response	Variables
MR1_Length	Multiple regression	Worm length	Last measurement taken for each variable
CPCR1_Length	Correlation principal components regression	Worm length	Last measurement taken for each variable
MR2_Length	Multiple regression	Worm length	Variables found to be significant listed in Table 3
CPCR2_Length	Correlation principal components regression	Worm length	Variables found to be significant listed in Table 3
MR3_Length	Multiple regression	Worm length	Full set of variables
CPRR3_Length	Correlation principal components regression	Worm length	Full set of variables
MR1_Number	Multiple regression	Worm number	Last measurement taken for each variable
CPCR1_Number	Correlation principal components regression	Worm number	Last measurement taken for each variable
MR2_Number	Multiple regression	Worm number	Variables found to be significant listed in Table 4
CPCR2_Number	Correlation principal components regression	Worm number	Variables found to be significant listed in Table 4
MR3_Number	Multiple regression	Worm number	Full set of variables
CPRR3_Number	Correlation principal components regression	Worm number	Full set of variables