Toxic effects of cadmium and zinc on the transmission of Echinoparyphium recurvatum cercariae

被引：23

作者：

Morley, NJ ^{[1
]}

Crane, M ^{[1
]}

Lewis, JW ^{[1
]}

机构：

[1] Univ London, Sch Biol Sci, Egham TW20 0EX, Surrey, England

来源：

JOURNAL OF HELMINTHOLOGY | 2002年 / 76卷 / 02期

关键词：

D O I：

10.1079/JOH2001110

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

The toxicity of cadmium, zinc and Cd/Zn mixtures to the transmission of Echinoparyphium recurvatum (Digenea: Echinostomatidae) cercariae into the snail second intermediate hosts was investigated at concentrations ranging from 100 mug l(-1) to 10 000 mug l(-1) in both soft and hard water. A differential response in the infectivity of metal-exposed cercariae into Lymnaea peregra and Physa fontinalis was demonstrated which was dependent on the snail species being infected. Exposure of L. peregra, P. fontinalis, and L. stagnalis to heavy metals caused a differing susceptibility to E. recurvatum cercariae depending on the snail species being exposed. The mechanism and effects of metal toxicity, together with the importance of the parasite/host strain on cercarial transmission are discussed.

引用

页码：157 / 163

页数：7

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