IMPACT OF ENTOMOPATHOGENIC NEMATODES ON DIFFERENT STAGES OF THE PUMPKIN FLY, DACUS CILIATUS (LOEW) AS A NEW APPROACH IN ITS BIOLOGICAL CONTROL

Document Type : Research articles.

Authors

1 Plant Protoction Research Institute, ARC, Dokki, Giza, Egypt

2 Faculty of Agriculture, Fayoum University, Egypt.

Abstract

The infectivity of two steinernematid entomopathogenic
nematodes, namely Steinernema carpocapsae All and Steinernema
riobravae (Weiser,1955) Poinar and one species of heterorhabdit
nematode , eterorhabditis bacteriophora Poinar on the leaping
larvae, pupae and adults of the pumpkin fly, Dacus ciliatus (Loew)
(Diptera: Tephritidae) was evaluated. The obtained data
demonstrated that D. ciliatus larvae were very susceptible to
nematodes, especially for S. riobravae than S. carpocapsae or H.
bacteriophora. The parasitism rate followed by death ranged
between 9.93% to 93.33%. D. ciliatus pupae and adults in the
contrary were susceptible to H. bacteriophora than the other two
steinernematid nematodes S. riofravae and S. carpocapsae.The
parasitism rate followed by death ranged from 6.33% to 90.00%
and from 11.10% to 91.13% for pupae and adults, respectively.

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