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Table 2 Lethal time values (LT50 and LT90 (day)) for Bactrocera zonata fly treated with different fungal concentrations of Metarhizium anisopliae and Beauveria bassiana under laboratory conditions

From: Virulence effect of Metarhizium anisopliae (Met.) and Beauveria bassiana (Bals.) fungi against the peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae)

Fungus concentration (conidia/ml) LT50 (day) LT90 (day) χ2 χ2 tabulated p Slope ± SE
M. anisopliae
 2.3 × 106 9.48 42.99 8.16 12.6 0.23 1.95 ± 0.20
 1.2 × 106 13.69 65.95 8.29 12.6 0.39 1.88 ± 0.21
 6.0 × 105 18.27 81.58 6.38 12.6 0.38 1.97 ± 0.24
 4.0 × 105 24.37 98.90 5.53 11.1 0.35 2.11 ± 0.32
 2.0 × 105 28.58 100.1 3.84 9.5 0.43 2.65 ± 0.46
B. bassiana
 2.3 × 106 13.33 51.64 9.52 12.6 0.23 2.18 ± 0.23
 1.2 × 106 17.55 65.34 12.00 12.6 0.09 2.42 ± 0.26
 6.0 × 105 22.44 99.75 11.58 12.6 0.07 1.98 ± 0.25
 4.0 × 105 28.99 103.99 10.11 11.1 0.49 2.31 ± 0.36
 2.0 × 105 30.03 124.52 3.76 7.8 0.39 3.76 ± 0.65
  1. LT50—Median time needs to achieve 50% mortality of the tested individuals, χ2—Chi-square, P—probability level of 5%, SE—standard error