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Table 2 Type-1 statistical analysis of (A) infectivity and (B) (log-transformed) number of spores in infected individuals.

From: Experimental evolution of specialization by a microsporidian parasite

  

(A) Infectivity

(B) Number of spores in infected individuals

 

df

χ2

P

SS

F

P

Test line

3

11.22

0.01

1.148

1.39

0.246

Isofemale line

3

4.53

0.209

0.244

0.30

0.828

Replicate [Isofemale line]

10

5.62

0.846

3.172

1.15

0.323

Test line* Isofemale line

9

24.33

0.004

1.994

0.80

0.612

   Adapted

1

20.16

< 0.001

   

   Test line * Isofemale [Adapted]

8

4.24

0.835

   

Testline * Replicate [Isofemale line]

30

29.00

0.517

5.521

0.67

0.909

   Adapted*Replicate [Isofemale line]

10

10.51

0.397

   

Error

311

  

85.632

  
  1. The analysis compares only specialized parasites tested on their own host and specialized parasites tested on mismatched hosts. 'Isofemale line' refers the isofemale line the parasites evolved on; 'Test line' is the isofemale line the evolved parasites were tested on. In (A), the factors written in italics are the components of the previous interaction (see Methods.) Note that the second component of the interaction Testline * Replicate is pooled into the error term. The component 'Adapted' (in bold) gives the importance of specialization onto a given host line. In (B) we did not decompose the interaction terms, as they were far from statistically significant.