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- Title
Pathogenicity of Different Fungal Isolates to the Adult Stage of the Mediterranean Fruit Fly, Ceratitis capitata (Wiedmann).
- Authors
El-Akhdar, E. A; Ouda, S. M.
- Abstract
Virulence of five different fungal isolates, Trichoderma longibrachiatum, T. harzianum, Aspergillus terreus, A. niger and Penicillium oxalicum was evaluated against the adult fruit fly, Ceratitis capitata (Wied.) to control or suppress its population before the application of the sterile insect technique (SIT) in the field. Filtrate and three spore suspension concentrations (104, 106 and 108 spores/ml) of each fungal isolate were applied to the adult flies (> 24 h. old). Some biological aspects such as adult survival (after 5, 10 and 15 days from emergence), female fecundity and male sterility throughout two weeks were studied. The results revealed that there were significant decreases (P<0.05) in the survival of males at all ages. Males were more susceptible than females (P<0.05). Moreover, the results indicated significant decreases (P<0.05) in the average number of eggs laid per female per day throughout two weeks when T. longibrachiatum (108 spores/ml), T. harzianum and A. niger (filtrate, 104, 106 and 108 spores/ml) and P. oxalicum (104, 106 and 108 spores/ml) were applied to adults. However, significant increases (P<0.05) were observed in the male sterility when T. longibrachiatum (filtrate and 108 spores/ml), T. harzianum (filtrate, 106 and 108 spores/ml). A. niger (106 and 108 spores/ml) and P. oxalicum (104, 106 and 108 spores/ml) were used. Laboratory results revealed that the tested fungi can be applied in the field under controlled humidity for suppressing population density of the Mediterranean fruit fly by using the attractant-contaminant traps to transmit the fungal infection to the rest of the population.
- Subjects
PARASITOIDS; PEST control; PARASITES; INSECTS; TRICHODERMA; FLIES; MYCOSES; MEDICAL mycology; CERATITIS
- Publication
Egyptian Journal of Biological Pest Control, 2009, Vol 19, Issue 1, p5
- ISSN
1110-1768
- Publication type
Article