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Egyptian Journal of Biological Pest Control

Table 1 Lethal concentration values of fourth instar Rhynchophorus ferrugineus larvae infected by fungi within 12 days post-inoculation

From: Development of potential microbial agents with two new entomopathogenic fungal strains to control the red palm weevil Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae)

Fungal species

Lethal concentration (LC) values (95% confidence limit) (conidia/ml)

LC1

LC10

LC25

LC50

LC90

LC99

Metarhizium anisopliae

ZZ-A1 strain

2.1 × 105

(6.9 × 10–4.7 × 106)

5.7 × 106

(2.7 × 104–4.7 × 107)

3.8 × 107

(8.2 × 105–1.9 × 108)

3.2 × 108

(3.4 × 107–9.3 × 108)

1.8 × 1010

(7.0 × 109–1.1 × 1011)

4.9 × 1011

(8.6 × 1010–3.6 × 1013)

Fusarium oxysporum

ZZ-L1 strain

6.9 × 103

(1.0 × 10–3–2.5 × 106)

1.0 × 106

(6.0 × 10–3-5.4 × 107)

1.9 × 107

(3.4 × 10–3.3 × 108)

4.8 × 108

(4.0 × 105–2.8 × 109)

2.3 × 1011

(4.7 × 1010–7.9 × 1013)

3.4 × 1013

(1.3 × 1012–1.6 × 1020)

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