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Table 1 Statistical analysis of the effects of mosquito family and parasite isolate on the success of infection. The proportion of infected mosquitoes (a, nominal logistic analysis) and the square root of the number of oocysts (b, ANOVA) were analysed as a function of the mosquito family, the parasite isolate, and their interaction. In both analyses, the mosquito's wing length was included as a confounder. As the study was run in three experimental blocks using different families and isolates, the factors family, isolate and their interaction were nested within block. Block, family and isolate were considered as random factors.

From: Host genotype by parasite genotype interactions underlying the resistance of anopheline mosquitoes to Plasmodium falciparum

  

(a) Proportion infected

(b) Intensity of infection

Source

d.f.

χ2

P

Sum of Squares

F

P

Experimental Block

2

85.5

<0.001

265.2

2.40

0.155

Wing Length

1

3.1

0.029

6.4

7.14

0.008

Family (within Block)

14

3.8

0.927

29.5

0.66

0.800

Isolate (within Block)

8

15.5

0.482

462.5

19.40

<0.001

Family*Isolate (within Block)

34

127.2

<0.001

110.2

3.59

<0.001

Error (for analysis b)

395

  

356.8