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首页> 外文期刊>Marine biology >Factors influencing the distribution of trematode larvae in blue mussels Mytilus edulis in the North Atlantic and Arctic Oceans
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Factors influencing the distribution of trematode larvae in blue mussels Mytilus edulis in the North Atlantic and Arctic Oceans

机译：影响北大西洋和北冰洋蓝贻贝Mytilus edulis吸虫幼虫分布的因素

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Blue mussels, Mytilus edulis, serve as second intermediate hosts for several trematode species, but little is known about the mechanisms underlying parasite infections in mussels. To reveal these mechanisms, the prevalence and intensity of trematode larvae (metacercar-iae in species of Gymnophallus, Himasthla and Renicola) were examined in blue mussels at 19 intertidal sites from the North Atlantic (Ireland, Iceland, Norway) to the Arctic Ocean (north-western Russia). Mussel samples were taken in 2005-2008. The impact of a number of environmental (maximal sea surface temperature, SSTmax) and biological factors (mussel age and density and the abundance of avian final hosts) on trematode infection was examined. Infection levels correlated with the interaction between local bird abundance and mussel age and density. They increased with mussel age but their dependence on mussel density and bird abundance varied among parasite genera. Prevalence and intensity increased with SSTmax for Renicola spp., but no relationship was found for Gymnophallus and Himasthla spp. The ambiguous effect of SSTmax is likely explained by the broad range of optimal temperatures for the normal functioning of trematode larvae (cercariae) infective for mussels and by the high dependence of the level of mussel infection on a combination of local ecological factors. High infection levels were observed even in localities with a low SSTmax. No mussels were infected in the most northeastern population, probably due to extreme conditions in the Arctic intertidal preventing trematode transmission. Future warming of the Arctic may accelerate trematode transmission in this system.
机译：蓝贻贝（Mytilus edulis）是几种吸虫物种的第二中间宿主，但对贻贝中寄生虫感染的潜在机制知之甚少。为了揭示这些机制，在从北大西洋（爱尔兰，冰岛，挪威）到北冰洋（19。俄罗斯西北）。贻贝样品于2005-2008年采集。研究了许多环境（最高海面温度，SSTmax）和生物学因素（贻贝年龄和密度以及禽类最终寄主的数量）对吸虫的影响。感染水平与当地鸟类丰度与贻贝年龄和密度之间的相互作用相关。它们随着贻贝年龄的增长而增加，但是它们对贻贝密度和鸟类丰度的依赖性在寄生虫属之间有所不同。 Renicola spp。的患病率和强度随SSTmax的增加而增加，而Gymnophallus和Himasthla spp则没有相关性。 SSTmax的模棱两可的影响可能是由于感染贻贝的吸虫的幼虫（尾c）正常功能的最佳温度范围很广，以及贻贝感染水平对局部生态因素的高度依赖性所致。即使在SSTmax较低的地区也观察到高感染水平。在最东北的人口中，没有贻贝被感染，这可能是由于北极潮间带的极端条件阻止了吸虫的传播。北极未来的变暖可能会加速该系统中吸虫的传播。

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  • 来源
    《Marine biology》 |2015年第1期|193-206|共14页
  • 作者

    Kirill V. Galaktionov; Jan O. Bustnes; Bard-J. Bardsen; James G. Wilson; Kirill E. Nikolaev; Alexey A. Sukhotin; Karl Skirnisson; Donald H. Saville; Mikhail V. Ivanov; Kira V. Regel;

  • 作者单位

    Laboratory of Parasitic Worms and White Sea Biological Station, Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia,Invertebrate Zoology Department, St. Petersburg State University, St. Petersburg, Russia;

    Norwegian Institute for Nature Research, Tromsoe, Norway;

    Norwegian Institute for Nature Research, Tromsoe, Norway;

    Zoology Department, Trinity College, Dublin 2, Ireland;

    White Sea Biological Station, Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia;

    Invertebrate Zoology Department, St. Petersburg State University, St. Petersburg, Russia,White Sea Biological Station, Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia;

    University of Iceland, Keldur, Iceland;

    School of Environmental Sciences, University of Ulster, Newtownabbey BT37 0QB, N. Ireland, UK;

    Hydrobiology and Ichthyology Department, St. Petersburg State University, St. Petersburg, Russia;

    Laboratory of Helminths' Ecology, Institute of the Biological Problems of the North of the Russian Academy of Sciences, Magadan, Russia;

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