Phosphine-induced sterility in Ephestia cautella (Lepidoptera: Pyralidae) |
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Authors: | Z.S. AL-Hakkak Alya M.B. Murad Afaf F. Hussain |
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Affiliation: | Scientific Research Council, Biological Research Centre, Jadiryia, Baghdad, Iraq |
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Abstract: | The present study was conducted to explore the sterilizing effect of phosphine on Ephestia cautella. Three to four-day old pupae were exposed to 0, 0.007, 0.014, 0.021, 0.028, 0.035, 0.042 and 0.049 mg/l of phosphine for 24 h at room temperature. The normally developed adults of each treatment were pair mated and several physiological and genetical parameters were investigated. The results showed gradual increases with dose in pupal mortality and adult malformation. The crossing results showed no changes in adult longevity and mating frequency. However, consistent reduction was noted in the fecundity and fertility of normally emerged adults. Preliminary data indicated similar levels of inherited sterility in the F1 adults raised from the above mentioned crosses. |
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