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Table 3 Toxicity of Bacillus thuringiensis israelensis (IPS82) to 3rd instar Aedes aegypti larvae from laboratory colonies

From: The susceptibility of Aedes aegypti populations displaying temephos resistance to Bacillus thuringiensis israelensis: a basis for management

     

LC50a

LC90a

Samples

Origin

Temephos status

DEc

No. larvae

Mean (95% fiducial limits)

RRb

Mean (95% fiducial limits)

RRb

Rockefeller

USA

Susceptible

RF

1620

0.008 (0.007-0.009)

1.0

0.026 (0.021-0.036)

1.0

RecL

Recife-PE

Susceptible

No

1020

0.016 (0.012-0.020)

2.0

0.030 (0.026-0.039)

1.2

RecR

Araripina-PE

Highly resistant

Yes

1620

0.010 (0.009-0.012)

1.3

0.030 (0.025-0.040)

1.2

  1. aLethal Concentrations (mg/L) for 50% (LC50) or 90% (LC90) of larvae after 24 h.
  2. bResistance Ratio: LC for sample tested/LC for the Rockefeller reference (RF) colony.
  3. cIncrease of the activity of detoxifying enzymes (DE).
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Parasites & Vectors

ISSN: 1756-3305

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