Table 3 Change in parasitaemia (Δ) between the first capture and the recapture of sedge warbler males (response; Poisson distribution, log-link function), analysed by GLM multivariate analysis of repeated measures, with year, age, arrival date, territory quality, tarsus length, and breeding success (number of fledglings reared) as predictors. *p < 0.05.

From: Afro-Palaearctic migrant birds rid themselves of haemoparasite infections when breeding in the temperate zone

Effects

df1/df2

Estimate

SE

t

F

p

Δ Parasitaemia

1, 90

   

263.53

 < 0.0001*

Year

7, 90

   

37.59

 < 0.0001*

Age

2, 90

   

1749.00

 < 0.0001*

Arrival date

1, 90

0.06

0.027

2.163

4.68

0.033*

Territory quality

1, 90

0.04

0.526

0.070

0.01

0.945

Tarsus

1, 90

− 0.46

0.247

− 1.844

3.40

0.068

Success

1, 90

− 0.04

0.070

− 0.590

0.35

0.557

Δ Parasitaemia*year

7, 90

   

269.67

 < 0.0001*

Δ Parasitaemia*age

2, 90

   

128.84

 < 0.0001*

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