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<p>The xiphidiocercariae type of <i>Phaneropsolus praomidis</i> infects the first intermediate host, the ampullariid snail <i>Lanistes carinatus</i>, causing a severe effect in the digestive gland of the snails due to its larval metamorphosis. The cercaria type of <i>Phaneropsolus praomidis</i> is characterized by the presence of a xiphoid spine at the oral sucker and rows of spines in its ventral sucker. To cease the larval development of this digenetic parasite, methanolic leaf extractions of Meliaceae plants, neem (<i>Azadirachta indica</i>), and chinaberry (<i>Melia azedarach</i>) were used. This study is considered the first report to use these plants’ extractions against the cercariae of <i>Phaneropsolus praomidis</i>. Both plant extractions caused severe destruction to the tegument of the oral and ventral suckers, loss of tegumental spines, loss of the rows of spines in the ventral sucker, and loss of the xiphoid spine. The mortality rate of cercaria caused by neem leaf extraction is higher than that of the other type of plant extraction.</p>

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Evaluation of the effects of methanolic leaf extracts from certain meliaceae plants (Azadirachta indica and Melia azedarach) on the emerging xiphidioceraciae of Phaneropsolus praomidis (Baer, 1971)

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Mohammed E. El-Zeiny

摘要

The xiphidiocercariae type of Phaneropsolus praomidis infects the first intermediate host, the ampullariid snail Lanistes carinatus, causing a severe effect in the digestive gland of the snails due to its larval metamorphosis. The cercaria type of Phaneropsolus praomidis is characterized by the presence of a xiphoid spine at the oral sucker and rows of spines in its ventral sucker. To cease the larval development of this digenetic parasite, methanolic leaf extractions of Meliaceae plants, neem (Azadirachta indica), and chinaberry (Melia azedarach) were used. This study is considered the first report to use these plants’ extractions against the cercariae of Phaneropsolus praomidis. Both plant extractions caused severe destruction to the tegument of the oral and ventral suckers, loss of tegumental spines, loss of the rows of spines in the ventral sucker, and loss of the xiphoid spine. The mortality rate of cercaria caused by neem leaf extraction is higher than that of the other type of plant extraction.