Abstract
The entomopathogenic nematodes Steinernema weiseri, S. feltiae, S. carpocapsae and two strains of Heterorhabditis bacteriophora, isolated from Turkish soils, were evaluated against larvae of the Mediterranean fruit fly (medfly) Ceratitis capitata in plastic cups under laboratory conditions with sandy loam soil and 10% moisture level. At a rate of 100 infective juveniles (IJs)/cm2, the last instar larvae of C. capitata were susceptible to the entomopathogenic nematodes: the S. feltiae 09-31 strain recovered from Aydin provided 78% mortality, whereas S. weiseri and S. carpocapsae killed 50% and 56% of the larvae, respectively. Both strains of H. bacteriophora species caused less than 50% mortality. Except for S. feltiae, the majority of infected medflies died as prepupae or pupae within the puparia. More than 90% larval mortality was recorded at 200 and 400 IJs/cm2 for S. feltiae. None of the nematode isolates infected the medfly pupae within the puparia. In pot experiments containing soil, S. feltiae caused 96% and 97% mortality at 100 and 200 IJs/cm2, respectively. In pot experiments with grass present, more than 94% mortality was obtained in the presence of grass roots.
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Acknowledgments
We thank Dr. Ibrahim Cakmak for his excellent assistance with the statistical analyses, and the Plant Protection Institute of Bornova in Izmir for providing the medfly larvae.
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Karagoz, M., Gulcu, B., Hazir, C. et al. Biological control potential of Turkish entomopathogenic nematodes against the Mediterranean fruit fly Ceratitis capitata . Phytoparasitica 37, 153–159 (2009). https://doi.org/10.1007/s12600-008-0020-5
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DOI: https://doi.org/10.1007/s12600-008-0020-5