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Table 2 Mean optical density values for glutathione S-transferase (GST), monooxygenase (Oxy) and esterase (Est) enzymes using α and β napthyl acetate as substrates.

From: Indoor collections of the Anopheles funestus group (Diptera: Culicidae) in sprayed houses in northern KwaZulu-Natal, South Africa

   n GST Oxy αEst βEst
Females An. parensis 24 0.024 (0.003) 0.335 (0.022) 0.134 (0.018) 0.115 (0.016)
  An. funestus (FANG) 24 0.022 (0.002) 0.324 (0.016) 0.201 (0.026) 0.16 (0.021)
  p   0.73 0.69 0.04 0.1
Males An. parensis 24 0.024 (0.003) 0.245 (0.007) 0.173 (0.023) 0.178 (0.017)
  An. funestus (FANG) 24 0.024 (0.002) 0.246 (0.01) 0.207 (0.027) 0.14 (0.018)
  p   0.86 0.94 0.35 0.16
  1. "n" = sample size; Figures in parentheses are the standard errors for each sample; p indicates significance in difference between An. parensis and An. funestus samples by enzyme system by gender following 2-sample t tests.