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Table 5 Results of generalized least squares models on reproductive life-history traits in females

From: Small-scale phenotypic differentiation along complex stream gradients in a non-native amphipod

 

(a) Fecundity

(b) Egg size

df

χ2

p

df

χ2

p

Female body length

1

207.72

< 0.001

1

13.56

< 0.001

Developmental stage

–

–

–

1

1784.89

< 0.001

Environmental PC 1

1

20.08

< 0.001

1

1.47

0.23

Environmental PC 2

1

78.20

< 0.001

1

3.05

0.081

Environmental PC 3

1

2.95

0.086

1

0.00

0.98

Environmental PC 4

1

1.43

0.23

1

0.02

0.89

  1. Two independent models considered (a) egg number per brood (fecundity) and (b) egg size as the dependent variables, while environmental PCs (Table 2), body length and developmental stage (where applicable) served as predictor variables. Significant effects are shown in bold.