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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 pestMortality (%) at indicated days post-treatment
1522–232732–37
Laemophloeus turcicusa46/200 (23)53/200 (27)64/200 (32)200/200 (100)
Rhyzopertha dominicaa43/250 (17)137/250 (55)185/250 (74)202/250 (81)
Plodia interpunctellac79/300 (26)107/300 (36)121/300 (40)157/300 (52)
Oryzaephilus surinamensisa0/60 (0)0/60 (0)0/60 (0)0/60 (0)
Tenebrio molitorc0/200 (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