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首页> 外文期刊>Parasitology >Freshwater mussels (&ITAnodonta anatina&IT) reduce transmission of a common fish trematode (eye fluke, &ITDiplostomum&IT &ITpseudospathaceum&IT)
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Freshwater mussels (&ITAnodonta anatina&IT) reduce transmission of a common fish trematode (eye fluke, &ITDiplostomum&IT &ITpseudospathaceum&IT)

机译：淡水贻贝（＆Itanodonta Anatina＆IT）减少常见鱼腥草（眼睛Fluke，＆Itdiplostomum和It＆Itpseudospathaceum）的传输

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Recent, results suggest that bivalves can play an important role in restraining the spread of various aquatic infections. However, the ability of mussels to remove free-living stages of macroparasites and reduce their transmission is still under- studied, especially for freshwater ecosystems. We investigated the influence of the common freshwater mussel (Anodonta anatina) on the transmission of a trematode (eye fluke, Diplostomum pseudospathaceum), which frequently infects fish in farms and natural habitats. In our experiments, mussels caused a significant decrease (P < 0.001) in the abundance of trematode free-living stages, from 6520 to 1770 cercariae L-1 on average (about 4-fold in 2 h). Individual clearance rates of mussels were 0.6-3.7 L per hour (mean 1.9). These tests were followed by experimental infections of rainbow-trout (Oncorhynchus mykiss) with different doses of D. pseudospathaceum cercariae in the presence or absence of mussels, Exposure of fish to cercariae in the presence of mussels significantly (P < 0.05) reduced the infection intensities in fish (by 30-40%) at all exposure doses. (Our results indicate that freshwater bivalves can markedly reduce local cercariae densities and could be useful in mitigation of trematodoses harmful to fish farming.
机译：最近的研究结果表明，双壳类在抑制各种水生感染的传播方面可以发挥重要作用。然而，贻贝清除大型寄生虫自由生活阶段并减少其传播的能力仍在研究中，尤其是在淡水生态系统中。我们调查了常见淡水贻贝（Anodonta anatina）对吸虫传播的影响（眼吸虫、伪斯帕塔双口吸虫），该吸虫经常感染农场和自然栖息地的鱼类。在我们的实验中，贻贝导致吸虫自由生活阶段的丰度显著降低（P<0.001），平均从6520个尾蚴L-1减少到1770个尾蚴L-1（2小时内约为4倍）。贻贝的个体清除率为每小时0.6-3.7升（平均1.9升）。在这些试验之后，在有或没有贻贝的情况下，用不同剂量的伪斯帕塔库姆尾蚴对虹鳟（虹鳟）进行实验性感染，在所有暴露剂量下，在有贻贝的情况下，鱼暴露在尾蚴中显著降低了鱼的感染强度（P<0.05），降低了30-40%。（我们的结果表明，淡水双壳类动物可以显著降低当地尾蚴密度，并有助于减轻对鱼类养殖有害的吸虫剂量。）。

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