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Table 3 Effect of rearing temperature on adult Cx. tarsalis vector competence for WNV (WN02-1956)

From: Effects of larval rearing temperature on immature development and West Nile virus vector competence of Culex tarsalis

Treatment Temperature

Day post feeding

Exp 1 (CV)

Exp 2 (CV)

Exp 3 (YC)

Exp 4 (YC)

 

% Infected

19°C

5

92(50)

83(41)a

100(30)

100(30)

25°C

 

86(50)

80(50)

97(30)

98(50)

31°C

 

86(50)

60(40)b

-

95(20)

19°C

7

94(50)a

81(36)a

87(30)

100(35)

25°C

 

76(50)b

82(50)a

83(30)

100(38)

31°C

 

88(50)

44(50)b

95(20)

92(24)

19°C

14

92(50)

76(34)

89(38)

88(33)b

25°C

 

86(50)

76(50)

100(13)

100(40)a

31°C

 

82(50)

64(50)

-

-

 

% Disseminated1

19°C

5

35

59

63

50

25°C

 

37

40

76

63

31°C

 

30

46

-

47

19°C

7

74a

90

96

86

25°C

 

53b

80

80

84

31°C

 

73

73

84

91

19°C

14

98

100

100

100

25°C

 

88

95

92

98

31°C

 

95

97

-

-

 

% Transmitted1

19°C

5

4

3

10

7

25°C

 

0

3

10

2

31°C

 

2

4

-

0

19°C

7

15

7

15

9

25°C

 

8

22

12

16

31°C

 

9

27

21

14

19°C

14

61

27b

65

72

25°C

 

51

63a

54

70

31°C

 

56

78a

-

-

  1. 1 Calculated based on number of infected mosquitoes following incubation at 27°C.
  2. Values in parentheses indicate number of mosquitoes tested.
  3. Percentages with different superscripted letters in each infection parameter are significantly different within each experiment.
  4. YC Yolo County, CV Coachella Valley.
  5. Significance tested by Fisher’s exact test.