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Table 1 Probit analysis of concentration-mortality data for Anabaena PCC 7120#11 against third instar mosquito larvae

From: The susceptibility of five African Anopheles species to Anabaena PCC 7120 expressing Bacillus thuringiensis subsp. israelensis mosquitocidal cry genes

Species LC50(105cells/ml)* LC90(105cells/ml)* Slope ± SE Heterogeneity
A. aegypti 1.42 (1.12-1.76)a 8.21 (6.05-12.3)a 1.70±0.15a 0.75
An. merus 3.90 (3.58-4.17)b 9.30 (8.0-11.4)a 3.37±0.31b 0.62
An. arabiensis 8.10 (7.62-8.56)c 14.3 (12.8-16.5)b 5.18±0.46c 0.19
An. gambiae 12.3 (11.4-13.3)d 35.1 (29.5-44.9)c 2.81±0.24d 0.49
An. quadriannulatus 15.7 (14.3-17.3)e 43.0 (35.9-54.9)c 2.93±0.26bd 0.92
An. funestus N.D.§ N.D. N.D. N.D.
  1. * Values in brackets show the 95% fiducial limits (FLs). Values in a column followed by the same letters are not significantly different (overlapping 95% FLs).
  2. Slope ± standard error. Values followed by the same letters are not significantly different (p > 0.05).
  3. Heterogeneity factor = χ2 / d.f. (degrees of freedom).
  4. § Not determined. Less than 50% mortality was obtained even at concentrations as high as 3.2 × 107 cells/ml.