REVIEW ARTICLE

Parasitology Research

, Volume 83, Issue 3, pp 209-213

First online:

Biological control studies of soft and hard ticks in Egypt

I The effect of Bacillus thuringiensis varieties on soft and hard ticks (ixodidae)
  • M. A. HassanainAffiliated withDepartment of Parasitology and Animal Diseases, National Research Center, Cairo, Egypt
  • , M. F. EL GarhyAffiliated withDepartment of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
  • , F. A. Abdel-GhaffarAffiliated withDepartment of Zoology, Faculty of Science, Cairo University, Cairo, Egypt
  • , A. El-SharabyAffiliated withDepartment of Plant Protection, National Research Center, Cairo, Egypt
  • , Kadria N. Abdel MegeedAffiliated withDepartment of Parasitology and Animal Diseases, National Research Center, Cairo, Egypt

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Abstract

The potential activity of three varieties of Bacillus thuringiensis (kurstaki, israeliensis,and thuringiensis) against the soft tick Argas persicus and the hard tick Hyalomma dromedarii was investigated. Soft ticks succumbed within a period ranging from 36 h to 5 days and hard ticks died at between 48 h and 10 days posttreatment, depending on the dose. Concentrations lethal to 50% of tick populations (LC50 values) indicated that Dipel 2x (B. thuringiensis var. kurstaki) was the most potent, followed by Vectobac (B. thuringiensis var. israeliensis), then HD 703 (B. thuringiensis var. thuringiensis). A. persicus was more affected than H.␣dromedarii by B. thuringiensis varieties. Eggs were mostly affected at 16 and 25 days after deposition for A.␣persicus and H. dromedarii, respectively.