Table 1 Two-parameter log-logistic model fitted to concentration-mortality data for describing the virulence of two fungal strains to G. platensis adults in terms of their estimated median lethal concentrations (LC50) with corresponding 95% confidence intervals. Concentration is expressed as conidia mL-1.

From: Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil

Fungal strain

n*

Model parameters

t (P-value)§

Median lethal concentrations (conidia mL−1) ¥

Inflection point (e) ± SE

Slope (b) ± SE†

LC50 (95% ci)

B. bassiana ICBC-240

240

7.37 ± 0.16

− 7.79 ± 1.73 a

4.50 (< 0.0001)

2.33 (1.12–4.86) × 107 a

M. anisopliae ICBC-364

240

7.82 ± 0.13

− 13.35 ± 2.18 b

6.13 (< 0.0001)

6.62 (3.75–11.69) × 107b

  1. *Total number of insects in the experiment.
  2. †Slope for mortality represents regression of proportion of weevils versus log (concentration) of conidia. Different letters indicate significant contrast between slopes according to Student t-test (P < 0.05).
  3. §Student t-test and P-values represent the probability of slope ≠ 0.
  4. ¥Student t-test contrasts for estimated lethal concentrations indicate significant differences when followed by distinct letters at P < 0.05.
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