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Table 2 (A) GLMs describing worms’ daily fecundity, as a proportion of lifetime fecundity, with fixed effects including the Selection Regime ((1) PDRP, (2) Dauer, (3) Control) and the presence or absence of N2 pheromone (Treatment). The explanatory variables in the model, the d.f., the AIC, the χ2 value of the LRT and the associated P value are all shown. Models significantly different from the preceding model are indicated in bold. (B) A summary of post hoc contrasts between the three different selection regimes within each GLM describing the daily fecundity as a proportion of lifetime fecundity (as Table 2A), showing the P values, with significant values indicated in bold

From: Pheromone modulates two phenotypically plastic traits – adult reproduction and larval diapause – in the nematode Caenorhabditis elegans

(A)

Models

Explanatory variables

d.f.

AIC

χ2

P value

day1_GLM1

Null

1

5540.52

  

day1_GLM2

Treatment

2

3882.30

1660.2

<0.001

day1_GLM3

Treatment + Selection Regime

4

3842.63

43.67

<0.001

day2_GLM1

Null

1

3604.74

  

day2_GLM2

Treatment

2

3328.38

278.39

<0.001

day2_GLM3

Treatment + Selection Regime

4

3302.25

30.10

<0.001

day3_GLM1

Null

1

7542.70

  

day3_GLM2

Treatment

2

4734.52

2810.2

<0.001

day3_GLM3

Treatment + Selection Regime

4

4710.01

28.52

<0.001

day4_GLM1

Null

1

3878.1

  

day4_GLM2

Treatment

2

2618.27

1261.8

<0.001

day4_GLM3

Treatment + Selection Regime

4

2591.13

31.14

<0.001

(B)

Models

   
  

1. PDRP

2. Dauer

day1_GLM3

3. Control

<0.001

<0.001

day1_GLM3

2. Dauer

0.498

-

day2_GLM3

3. Control

0.693

<0.001

day2_GLM3

2. Dauer

<0.001

-

day3_GLM3

3. Control

<0.001

0.94

day3_GLM3

2. Dauer

<0.001

-

day4_GLM3

3. Control

<0.001

<0.001

day4_GLM3

2. Dauer

0.3805

-