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Table 3 Pathogenicity of a single dose of Mattesia sp. isolated from Laemophloeus turcicus adults versus different insects at indicated days post-treatment

From: Productivity, pathogenicity, host range, and spore mass-propagation of local strain of Mattesia sp. isolated from insect cadavers of certain stored grain pests in Egypt

Insect pest

Mortality (%) at indicated days post-treatment

15

22–23

27

32–37

Laemophloeus turcicusa

46/200 (23)

53/200 (27)

64/200 (32)

200/200 (100)

Rhyzopertha dominicaa

43/250 (17)

137/250 (55)

185/250 (74)

202/250 (81)

Plodia interpunctellac

79/300 (26)

107/300 (36)

121/300 (40)

157/300 (52)

Oryzaephilus surinamensisa

0/60 (0)

0/60 (0)

0/60 (0)

0/60 (0)

Tenebrio molitorc

0/200 (0)

0/200 (0)

0/200 (0)

0/200 (0)

  1. a:cRepresented in percentages of mortality among treated coleopterous adults: a, of ca. 4–5-week-old and lepidopterous or coleopterous larvae; c, of ca.7-to 10-day-old. Mortality in the controls ranged between 0 and 2%
  2. 0.01 g of powdered cadavers of Mattesia-infected adults of L. turcicus (100 cadavers) carried ca. 1.5 × 108 spores per 10 g of crushed maize grain