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Table 2 Likelihood ratio tests comparing generalized linear mixed models

From: Testing for local adaptation in brown trout using reciprocal transplants

Effect tested

Fixed effects

Random effects

AIC

X 2

d.f.

p

a)

      
 

P, L, P×L

C, P

2149

   

Capsule (C)

P, L, P×L

P

2350

203.1

1

< 0.001

Position (P)

P, L, P×L

C

2169

21.8

1

< 0.001

Population ×

P, L

C, P

2131

14.2

16

0.58

Location (P×L)

      

Population (P)

L

C, P

2135

12.1

4

0.017

Location (L)

P

C, P

2400

277.4

4

< 0.001

b)

      
 

P, L, P×L

C, P

936

   

Capsule (C)

P, L, P×L

P

1061

126.9

1

< 0.001

Position (P)

P, L, P×L

C

934

0.1

1

0.78

Population ×

P, L

C

935

9.2

4

0.055

Location (P×L)

      

Population (P)

L

C

943

15.8

4

0.003

Location (L)

P

C

942

8.3

1

0.004

  1. (GLMMs) on the effects of population origin, rearing location, position in capsule, and capsule number on a) embryo survival and b) hatching rate among survivors within the locations Giesse and Worble only (because hatching rates or survival were too low in the other populations). Akaikes information criterion (AIC) describes the quality of fit of each model. To evaluate the significance of fixed and random effects, alternative models without the variable of interest were compared to the full model (bold) using likelihood ratio tests. If an alternative model had a significantly better fit (bold), this model was subsequently compared against further reduced models.
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BMC Ecology and Evolution

ISSN: 2730-7182

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