当前位置： SCI文献检索 > ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY期刊下所有文献 > Toxicity of cadmium and zinc mixtures to cercarial tail loss in Diplostomum spathaceum (Trematoda:Diplostomidae).

Toxicity of cadmium and zinc mixtures to cercarial tail loss in Diplostomum spathaceum (Trematoda:Diplostomidae).

Abstract：

:The effects of cadmium and zinc mixtures on tail loss of the free-living cercarial stage of the parasitic fluke Diplostomum spathaceum were investigated at concentrations ranging from 0.1 to 10,000 microg/L. Cercariae were exposed to metal mixtures of equal concentrations, metal mixtures of unequal concentrations, and a low-dose pretreatment followed by high-dose exposure mixtures. Under control conditions as the cercarial population aged tail loss occurred naturally a few hours before death, with an increasing tail loss over time associated with a decrease in cercarial survival. Under all mixture exposures the period of tail loss was prolonged compared to single-metal exposures. In most test solutions this was associated with a similar increase in survival of cercariae. Inhibition of tail loss occurred in low concentrations (0.1-100 microg/L) of equal mixed exposures. In some unequal, and in all pretreatment mixture exposures, a significant stimulation of tail loss occurred compared to the pattern of decreasing survival over time within the cercarial population. The importance of toxic metal mixtures to cercarial tail loss and potential implications for successful parasite transmission are discussed.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Morley NJ,Crane M,Lewis JW

doi

10.1016/j.ecoenv.2003.12.018

keywords:

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

53-60

issue

1

eissn

0147-6513

issn

1090-2414

pii

S0147651303002458

journal_volume

60

pub_type

杂志文章

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