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Table 2 Features of the sites associated with T. infestans infestation

From: Variations in time and space of an Andean wild population of T. infestans at a microgeographic scale

Descriptive variable

Number of sites

Percentages of sites infested with T. infestansa

Average crowding index of T. infestansb

Average number of reiterated infestations during the trial periodc

Location of the trap

    

On the ground

26

46.1 (12)

5.9 ± 24.8

1.1 ± 2.0

Underground

24

75.0 (18)

21.3 ± 29.3

4.8 ± 4.8

P-value

 

0.038

0.002

0.002

Material where the trap was set

    

Rocks

12

75.0 (9)

28.9 ± 36.1

6.5 ± 5.2

Earth

15

60.0 (9)

8.3 ± 15.4

2.1 ± 3.1

Vegetation

19

47.4 (9)

7.7 ± 28.9

1.2 ± 2.2

Mixed

4

75.0 (3)

11.5 ± 21.7

3.0 ± 4.7

P-value

 

0.43

0.17 d

0.002 d

Burrow

    

Yes

13

84.6 (11)

24.6 ± 34.1

4.7 ± 5.0

No

37

51.3 (19)

9.3 ± 24.7

2.2 ± 3.5

P-value

 

0.035

0.014

0.032

Presence of animal feces at the site

    

Yes

3

100 (3)

67.7 ± 39.5

11.3 ± 2.1

No

47

57.4 (27)

9.8 ± 23.5

2.3 ± 3.5

P-value

 

0.26e

0.008

0.007

Presence of stones around the trap

    

Yes

14

71.4 (10)

27.8 ± 34.6

6.2 ± 5.2

No

36

55.5 (20)

7.7 ± 23.0

1.6 ± 2.5

P-value

 

0.30

0.027

0.011

Presence of earth around the trap

    

Yes

41

58.5 (22)

10.8 ± 27.0

2.1 ± 3.4

No

9

100 (8)

24.5 ± 30.7

6.3 ± 5.1

P-value

 

0.051

0.034

0.012

Presence of vegetation around the trap

   

Yes

24

54.2 (12)

8.1 ± 26.8

1.5 ± 2.7

No

26

76.9 (18)

18.1 ± 28.5

4.1 ± 4.7

P-value

 

0.16

0.029

0.037

  1. aThe P-value was evaluated with the Chi 2 test (significant P-value in bold); bThe crowding index is the average number of triatomines per site and the P-value was evaluated with the nonparametric Mann–Whitney test; cthe P-value was evaluated with the nonparametric Mann–Whitney test; dAMOVA variance analysis was applied; eBecause of the sample size, the Fisher exact test was applied; the significant values are in bold.