Table 1 Summary of the optimal model investigating variation in activity space (i) and activity (ii) in Octopus vulgaris

Activity Space (i)

Parametric coefficients

Estimate

Std. Error

t value

Pr ( <|t)

Intercept

11.224

0.151

74.373

 < 0.001

Catch type (Traps)

0.5021

0.171

2.937

 < 0.004

Approx. significance of smooth terms

Edf

Ref. df

F value

p

Day after tagging

1.609

1.609

2.616

 < 0.05

R-sq. (adj.) = 0.261, Scale est. = 0.064

Activity (ii)

Parametric coefficients

Estimate

Std. Error

t value

Pr ( <|t)

Intercept

1.825

0.343

5.316

 < 0.001

Approx. significance of smooth terms

Edf

Ref. df

F value

p

s(Temp)

2.815

2.815

33.89

 < 0.001

s(Hour)

2.958

3.000

31.67

 < 0.001

R-sq. (adj.) = 0.039, Scale est. = 2.244