Table 2

Mean mortality of and 50% and 90% knockdown times (in minutes) (KDT50 and KDT90) of female Anopheles arabiensis in populations from eastern and central Sudan in response to DDT exposure.

Population

No.

Mortalities % (95% CI)

KDT50 (95% CI)

KDT90 (95% CI)


Sennar

320

39.7 (19.8 - 59.53)b

42.3 (22.5 - 62.2)

77.1 (25.89 - 128.3)

Mayirno

110

49.0 (47.8 - 50.18)ab

62.8 (43.5 - 82.2)

97.8 (78.4 - 117.1)

Damazin

300

39.0 (19.1 - 58.86)b

45.7 (34.5 - 70.0)

79.5 (71.2 - 93.1)

Khartoum

200

94.5 (93.3 - 95.68)a

30.4 (26.8 - 33.8)

53.9 (47.2 - 65.7)

Kosti

300

73.3 (53.5 - 93.2)ab

73.8 (70.3 - 77.3)

102.7 (32.8 - 172.7)

Al Shuwak

140

67.1 (66.0 - 68.32)ab

60.4 (35.5 - 85.3)

98.2 (73.8 - 123.1)


Columns not connected by the same letter are significantly different at a level of P <0.05 (Tukey-Kramer HSD test).

Himeidan et al. Parasites & Vectors 2011 4:154   doi:10.1186/1756-3305-4-154

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