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首页> 外文期刊>Parasitology >Long-term trends in helminth infections of wood mice (Apodemus sylvaticus) from the vicinity of Malham Tarn in North Yorkshire, England
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Long-term trends in helminth infections of wood mice (Apodemus sylvaticus) from the vicinity of Malham Tarn in North Yorkshire, England

机译：从英格兰北约克郡的Malham Tarn附近的木老鼠（Apodemus Sylvaticus）的长期趋势来自北约克郡的Malham Tarn附近

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摘要

Helminth infections in wood mice (n = 483), trapped over a period of 26 years in the woods surrounding Malham Tarn in North Yorkshire, were analysed. Although 10 species of helminths were identified, the overall mean species richness was 1.01 species/mouse indicating that the helminth community was relatively depauperate in this wood mouse population. The dominant species was Heligmosomoides polygyrus, the prevalence (64.6%) and abundance (10.4 worms/mouse) of which declined significantly over the study period. Because of the dominance of this species, analyses of higher taxa (combined helminths and combined nematodes) also revealed significantly declining values for prevalence, although not abundance. Helminth species richness (HSR) and Brillouin's index of diversity (BID) did not show covariance with year, neither did those remaining species whose overall prevalence exceeded 5% (Syphacia stroma, Aonchotheca murissylvatici and Plagiorchis muris). Significant age effects were detected for the prevalence and abundance of all higher taxa, H. polygyrus and P. muris, and for HSR and BID, reflecting the accumulation of helminths with increasing host age. Only two cases of sex bias were found; male bias in abundance of P. muris and combined Digenea. We discuss the significance of these results and hypothesize about the underlying causes.
机译：对被困在北约克郡马勒姆塔恩周围森林中26年的木老鼠（n=483）的蠕虫感染进行了分析。虽然已鉴定出10种蠕虫，但总体平均物种丰富度为1.01种/鼠，表明蠕虫群落在该木鼠种群中相对不发达。优势种为多角海螺，其患病率（64.6%）和丰度（10.4条蠕虫/小鼠）在研究期间显著下降。由于该物种占主导地位，对更高分类群（组合蠕虫和组合线虫）的分析也显示，虽然数量不多，但其流行值显著下降。蠕虫物种丰富度（HSR）和布里渊多样性指数（BID）没有显示出与年份的协方差，总患病率超过5%的其余物种（Syphacia stroma、Aonchothecea murissylvatici和斜纹夜蛾）也没有表现出协方差。在所有高等分类群的流行率和丰度，以及HSR和BID中检测到了显著的年龄效应，反映了蠕虫随着宿主年龄的增加而积累。仅发现两例性别偏见；鼠疟原虫和合二为一疟原虫数量的雄性偏向。我们讨论了这些结果的意义，并对潜在原因进行了假设。

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  • 来源
    《Parasitology》 |2021年第4期|共13页
  • 作者

    Jerzy M. Behnke;

  • 作者单位

    School of Life Sciences University of Nottingham University Park Nottingham NG7 2RD UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 寄生虫病;
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