Table 3 Toxicity (LC values) and resistance ratio of methoxyfenozide and spinetoram individually to the 2nd instar larvae of a methoxyfenozide selected strain of Spodoptera littoralis after 96 h. post-treatment.

From: Toxicity and biochemical impact of methoxyfenozide/spinetoram mixture on susceptible and methoxyfenozide-selected strains of Spodoptera littoralis (Lepidoptera: Noctuidae)

Insecticides

No

LC25 (µg AI mL-1) (95% FL)

LC50 (µg AI mL-1) (95% FL)

Slope (SE)

X2 (df)

g value

RR50*

Methoxyfenozide- selected strain

Methoxyfenozide

100

23.65 (17.53–29.40)

63.31 (53.32–76.22)

1.57(0.17)

7.13(3)

0.04

36

Spinetoram

100

0.031 (0.016–0.047)

0.124 (0.089–0.164)

1.11(0.13)

5.54(2)

0.05

3

  1. No. number of larvae exposed to the insecticide, LC25, and LC50 are concentrations of each insecticide, in μg (microgram) of insecticide per mL (milliliter) of water, that is required to kill 25 or 50% of the tested population, respectively. X2 chi-square, and df Degree of freedom. g value goodness of fit, and *RR50 (Resistance Ratio)62 = LC50 of tested generation/ LC50 of parent strain.
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