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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.