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Articles by Ismail Ragab El-Gendy
Total Records ( 4 ) for Ismail Ragab El-Gendy
  Ismail Ragab El-Gendy
  Mediterranean Fruit Fly (MFF), Ceratitis capitata and Peach Fruit Fly (PFF), Bactrocera zonata are the main insect pests in Egypt and because the monitoring process is done by sex attractant traps that is specialize for males only, while food baits extend to attract both male and female flies and thus, it can be used in monitoring fruit flies, especially female flies. Responding both MFF and PFF to food baits in field trials were studied as aim to evaluate the attraction to some protein derivatives; Cera Trap, Buminal and Bio Nal, in comparison with torula yeast, also effect of pH degree. Results indicated that the highest attractive material for MFF was Buminal bait, followed by Cera Trap and Bio Nal. While, the highest attractive material for PFF was Cera Trap bait, followed by Buminal and Bio Nal. Significant differences in attraction were obtained among different food baits, also between females and males attraction for both MFF and PFF. Number of captured flies for both species was related to pH degree. A significant negative correlation was obtained between concentrations of different food baits in pH degree. A significant negative correlation was obtained for Buminal baits in pH degree with elapsed time while non-significant negative and non-significant positive correlation were obtained for Cera Trap and Bio Nal baits in pH degree with elapsed time.
  Ismail Ragab El-Gendy
  The Peach Fruit Fly (PFF), Bactrocera zonata (Saunders) (Diptera: Tephritidae) is an important agricultural pest in Egypt. Monitoring and control of this species is relating to collecting data of traps catching. The efficiency of traps attraction has an important role to reach the real population density of PFF. Present study was carried out in the field on Jackson trap provided with the sex attractant, Methyl eugenol, to evaluate the effects of color and height of the trap as well as position of the trap in the main cardinal directions of the tree on attraction of male PFF, expressed as male flies captured per trap per day (CTD). Results of the comparison between yellow and white colors of card Jackson traps revealed that white trap color (4.67 CTD) was preferred than the yellow one (3.63 CTD) for peach fruit fly attraction. The suitable height for hanging traps on the tree was 1.5 m, followed by 1.0, 2.5 and 2.0 m heights, respectively. On the other hand, the best position of trap on the tree was West direction (3.33 CTD) of the tree, followed by North (3.20 CTD), East (1.90 CTD) and South directions (1.60 CTD), respectively.
  Ismail Ragab El-Gendy
  The Peach Fruit Fly (PFF), Bactrocera zonata is one of the most destructive insect-pest of horticulture in Egypt. Occurrence adults of PFF in the field must be monitored to apply the action plan management of this pest. This study was conducted under field conditions to evaluate the response of PFF adults to some synthetic food-odor lures; Ammonium Acetate (AA), Ammonium Carbonate (AC), Ammonium Di-hydrogen orthophosphate (AD), Di-ammonium hydrogen-orthophosphate (DA) and a mixture of AD and borax. As well as, determining the role of pH degree of the synthetic food-odor lures on attracting of PFF adults. Results indicated that AA was the highest potential attractants in attraction adults of PFF. The borax mixed with AD enhanced the AD attraction potential for PFF compared to attraction of AD alone. The mean number of captured flies of PFF was inversely to tested time, i.e., 0.23±0.02 and 0.16±0.03 capture flies/trap/day in the first and second tested weeks. The overall mean numbers captured flies of PFF was directly proportional to the pH degree (r = 0.25**). So, the obtained results showed clearly that the PFF is attracted to the synthetic food-odor lures moderate pH degree or light alkaline.
  Ismail Ragab El-Gendy
  Background and Objective: Peach fruit fly (PFF), Bactrocera zonata (Diptera: Tephritidae) is an invasive insect species in Egypt, which is classified as a polyphagous insect-pest of horticulture crops. The objective of the present study was to determine the host preference of the PFF if given the choice between hosts. Materials and Methods: The host preference of the PFF among 11 available kinds of plant fruits was studied under laboratory conditions and expressed as a number of forming pupae, pupal weight, deformity and adult emergence percentage. Obtained data were tabulated and analyzed statistically using CoStat 4.2. One-way ANOVA in a completely randomized design was generated for treatments and means were by Tukey-Kramer test (qs) at 0.05 probability. Results: The results revealed that mango was significantly the most preferred host among tested fruits (FG) based on the number of pupae produced/host (108.33 pupae/500 g), followed by apricot with 103.33 pupae. Significantly, the least formed rates (14.66 pupae) and weight (10.0 mg) of pupae was obtained from apple, whereas, it had the highest adult emergence percentage (95.82%). Among the tested fruits of vegetables (VG), okra was significantly the most preferable host with 38.33 pupae and adult emergence with 85.25%. In case fruits mixed with vegetables (FVG), mango fruits were statistically the highest preferred too, with 123.66 pupae, while cucumber was not infected whether in case of VG or FVG. Conclusion: The results revealed that mango was the most preferred host of PFF among treated fruits of FG and among FVG. Okra fruits were significantly the most preferable among tested fruits of VG, while cucumber was categorized as a non host for the PFF. This study gives important information which confirms the presence or absence of this species of fruit flies in an area, that is useful in the integrated pest management (IPM) practices.
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