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Table 4 Multivariable analysis of the effects of ovarian age, month, year and method of capture on the wing length of female G. pallidipes (n = 80,219; r2 = 0.26) and G. m. morsitans (n = 7764; r2 = 0.24) captured in the field at Rekomitjie between January 1989 and December 1993

From: Wing length and host location in tsetse (Glossina spp.): implications for control using stationary baits

 

G. pallidipes

G. m. morsitans

Coefficient

95% CL

Coefficient

95% CL

Lower

Upper

Lower

Upper

Ovarian age

 1

-1.21

-1.88

-0.54***

-2.01

-3.88

-0.13*

 2

0.22

-0.44

0.88

-2.45

-4.37

-0.54*

 3

0.35

-0.33

1.04

-1.26

-3.26

0.74

 4

0.22

-0.43

0.87

0.94

-0.91

2.80

 5

0.05

-0.61

0.72

-1.72

-3.65

0.21

 6

-0.18

-0.89

0.52

-0.97

-3.09

1.14

 7

-0.22

-1.03

0.60

-0.61

-3.52

2.31

Year

 90

1.67

1.10

2.25***

2.47

0.33

4.60*

 91

2.27

1.79

2.76***

5.08

3.46

6.70***

 92

-2.85

-3.31

-2.40***

-2.27

-4.10

-0.43*

 93

11.73

11.28

12.18***

8.84

6.99

10.69***

Month

 February

18.45

17.71

19.19***

9.42

7.08

11.77***

 March

24.88

24.14

25.63***

17.89

14.97

20.82***

 April

27.35

26.63

28.06***

24.97

21.83

28.12***

 May

30.86

30.12

31.59***

22.70

19.55

25.85***

 June

29.22

28.46

29.98***

23.09

20.83

25.34***

 July

32.77

32.00

33.54***

27.85

25.60

30.10***

 August

27.78

26.97

28.58***

23.04

20.63

25.45***

 September

22.50

21.73

23.26***

21.03

18.73

23.32***

 October

15.68

14.84

16.51***

13.04

10.58

15.51***

 November

3.24

2.45

4.03***

-3.27

-5.86

-0.69*

 December

-1.53

-2.29

-0.78***

-5.85

-8.25

-3.49***

Method

 VET

-1.73

-2.21

-1.26***

-2.97

-4.23

-1.73***

 Constant

707.8

706.9

708.6

618.3

615.6

621.1

  1. *P < 0.05, ***P < 0.001 (Student’s t-test)
  2. Abbreviation: CL, 95% confidence interval limits