Impact of entomopathogenic nematodes on different stages of the pumpkin fly, dacus ciliatus (loew)‎ as a new approach in its biological control

الملخص EN

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.