Oviposition Deterrent Activity of Some Wild Plants for Adult Females of Chrysomya albiceps with Medical and Veterinary Importance

Usama Abu El-Ghiet, Abdullah Salman Alhuraysi, Tarek Yousry Elsheikh and Mohamed El-Sakhawy

Background and Objective: Chrysomya albiceps is widely spread worldwide, causing myiasis in both humans and animals and playing a mechanical role in the spreading of helminths, viruses and bacteria. Searching for new and safe alternative control methods is very important to eliminate the transmission of pathogens. This study aims to determine the oviposition-deterrent activity of Juniperus procera, Artemisia absinthium, Rosmarinus officinalis and Hypoestes forskaolii wild plants against adult Chrysomya albiceps. Materials and Methods: The effect of plant extracts from Juniperus procera, Artemisia absinthium, Rosmarinus officinalis and Hypoestes forskaolii plants were tested against adult females of Chrysomya albiceps for oviposition deterrent or repellency. These extracts resulted in oviposition deterrent efficacy for adult females of C. albiceps based on the plant type, plant part (leaves or stems), extract type (methanol, acetone and petroleum ether) and tested dose. Results: The highest anti-oviposition activity against C. albiceps females presented from A. absinthium stems acetone extract at a dose of 1 mg cm^–2 by 100 %, while at 0.5 mg cm^–2 recorded remarkable repellency by 86.7% as compared with the control treatment. According to the dose-response relationship, A. absinthium methanol and acetone extracts were ED₅₀ values of 0.85, 0.319 mg cm^–2 (leaves) and 1.88, 0.576 mg cm^–2 (stems), followed by J. procera methanol extract by 0.983 mg cm^–2 (leaves) and 0.98 mg cm^–2 (stems), respectively achieved highest oviposition deterrent efficiency as compared with other extracts. Conclusion: The high repellency activities of these extracts can be utilized to stop C. albiceps flies from laying eggs on wounds and transmitting myiasis diseases to humans and animals and could potentially replace pesticides used in the future control programs of flies.

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