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Table 1 Effects of age (Eye lens weight - ELW) and viral infection (viral RNA - vRNA and antibody - AB) on body mass, head-body length, sexual maturity and fertility in M. natalensis infected by Lassa (LASV), Morogoro (MORV) and Gairo (GAIV) viruses

From: No measurable adverse effects of Lassa, Morogoro and Gairo arenaviruses on their rodent reservoir host in natural conditions

   

ELW

vRNA

Interaction vRNA × ELW

AB

Interaction

vRNA or AB

Interaction

AB × ELW

vRNA or AB × ELW

Virus

Predicted

n

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

\( {\upchi}_1^2 \)

P

LASV

Body mass

1,297

1670.30

< 0.01

0.53

0.46

0.11

0.74

1.78

0.18

0.49

0.49

2.08

0.14

0.13

0.71

Head-body length

1,296

1751.80

< 0.01

0.16

0.68

0.09

0.75

0.05

0.81

0.15

0.70

0.29

0.65

<0.01

0.97

Sexual maturity

1,297

345.21

< 0.01

1.72

0.54

0.32

0.57

np

np

5.42

0.02

0.01

0.91

2.78

0.10

Fertility

151

1.84

0.17

2.14

0.14

0.21

0.65

2.14

0.14

0.03

0.85

0.10

0.75

0.08

0.78

MORV

Body mass

747

331.22

< 0.01

0.01

0.94

0.85

0.36

0.02

0.90

0.85

0.35

< 0.01

0.95

1.26

0.26

Head-body length

514

127.46

< 0.01

0.04

0.83

1.50

0.22

0.01

0.94

0.03

0.87

< 0.01

0.97

0.13

0.72

Sexual maturity

749

37.99

< 0.01

0.16

0.69

0.27

0.60

0.08

0.77

0.01

0.93

< 0.01

0.96

0.03

0.84

GAIV

Body mass

258

176.09

< 0.01

0.03

0.86

0.52

0.46

13.28

< 0.01

0.01

0.93

8.60

< 0.01

< 0.01

0.99

Head-body length

254

175.00

< 0.01

0.14

0.71

0.29

0.59

8.45

< 0.01

0.95

0.33

6.23

0.01

0.23

0.63

Sexual maturity

256

25.90

< 0.01

0.09

0.76

0.12

0.72

8.57

< 0.01

0.49

0.48

6.14

0.01

0.53

0.46

  1. Abbreviations: n number of sampled M. natalensis; np not possible to calculate because of significant interaction; \( {\upchi}_1^2 \), chi-squared value; P, P-value
  2. The last two columns represent analyses of grouped animals that were either vRNA or antibody positive. Bold P-values are statistically significant