Effects of crude extracts of Mucuna pruriens (Fabaceae) and Carica papaya (Caricaceae) against the protozoan fish parasite Ichthyophthirius multifiliis
Effects of crude extracts of Mucuna pruriens (Fabaceae) and Carica papaya (Caricaceae) against the protozoan fish parasite Ichthyophthirius multifiliis
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DOI：
10.1007/s00436-003-1038-8
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发表时间：
2004-03-01
影响因子：
2
通讯作者：
Knopf, K
中科院分区：
文献类型：
--
作者：
Ekanem, AP;Obiekezie, A;Knopf, K
多丝小瓜虫（Ichthyophthirius multifiliis）是养殖鱼类中最具致病性的寄生虫之一。本研究比较了油麻藤叶甲醇粗提物和番木瓜种子石油醚提取物对黄瓜枯萎病的防治效果。在体内和体外条件下研究了多丝状体。将感染该虫的金鱼浸泡在含M. pruriens浸提液，并与C.木瓜提取物I.数量减少了90%。multifiliis对鱼的治疗后，在浴的每种植物提取物在200毫克升（-1）相比，未经处理的控制。因此，寄生虫引起的鱼类死亡率显着降低。在M.蒺藜提取物体外试验表明，I. 150 mg/l M中的多丝藻。在200 mg/l的C.木瓜提取物6 h后。虽然药用植物提取物的活性成分仍然是未知的，我们已经证明，他们有可能有效地控制I。多丝的
The ciliate Ichthyophthirius multifiliis is among the most pathogenic parasites of fish maintained in captivity. In the present study, the effects of the crude methanolic extract of leaves of Mucuna pruriens and the petroleum-ether extract of seeds of Carica papaya against I. multifiliis were investigated under in vivo and in vitro conditions. Goldfish (Carassius auratus auratus) infected with the parasites were immersed for 72 h in baths with M. pruriens extract, and for 96 h in baths with C. papaya extract. There was a 90% reduction in numbers of I. multifiliis on fish after treatment in baths of each plant extract at 200 mg l(-1) compared to untreated controls. Consequently, parasite-induced fish mortality was reduced significantly. A complete interruption of trophont recruitment was achieved by immersion in the M. pruriens extract. In vitro tests led to a 100% mortality of I. multifiliis in 150 mg/l M. pruriens extract, and in 200 mg/l of C. papaya extract after 6 h. Although the active constituents of the medicinal plant extracts are still unknown, we have demonstrated that they have potential for effective control of I. multifiliis.