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首页> 外文学位 >Genetic variability of the stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae) assessed on a global scale using Amplified Fragment Length Polymorphism.
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Genetic variability of the stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae) assessed on a global scale using Amplified Fragment Length Polymorphism.

机译：使用扩增的片段长度多态性在全球范围内评估了稳定蝇蝇Stomoxys calcitrans（L。）（双翅目：蝇科）的遗传变异性。

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摘要

The stable fly, Stomoxys calcitrans, is a cosmopolitan pest of livestock and humans. It is a major pest in livestock facilities, where exist excellent breeding sites such as spilled feed mixed with manure. The pestiferous nature and painful bite cause stress to cattle and other animals. Cattle perform avoidance behaviors such as bunching together, standing in water, tail swishing, ear flicking and leg stamping. The stress and avoidance behaviors result in reductions in weight gain or milk production, with an estimated annual economic loss of > ;Studying the population genetics of stable flies could provide information on their population dynamics, origins of outbreaks, and geographical patterns of insecticide resistance. Many studies have been conducted on a local scale, most reporting a high level of gene flow between locations. To date, few studies have been conducted on a global scale. Here I report a study of samples acquired from 4 biogeographical regions: Nearctic, Neotropical, Palearctic and Australian. No samples were acquired from the Oriental region.;The results indicate a high level of gene flow on a global scale. F ST and GST values are low, and Nm values very high. The tests of neutrality suggest population expansion, and tests for genetic differentiation simply reported "no differentiation". AMOVA results show the majority of genetic diversity is within groups, and very little among groups. These results suggest that stable flies have a panmictic population, with no isolation by distance or across geographical barriers.
机译：稳定的蝇Stomoxys calcitrans是家畜和人类的世界性害虫。它是牲畜设施中的主要害虫，那里存在优良的繁殖场所，例如洒入的饲料与肥料混合。害虫的性质和痛苦的叮咬对牛和其他动物造成压力。牛具有回避行为，例如聚在一起，站在水中，甩尾，甩耳朵和踩踏脚等。压力和回避行为会导致体重增加或产奶量减少，估计每年造成的经济损失>；研究稳定果蝇的种群遗传学可以提供有关其种群动态，暴发起源和抗药性地理分布的信息。已经在局部规模上进行了许多研究，大多数报告了位置之间的高水平基因流动。迄今为止，在全球范围内进行的研究很少。在这里，我报告了一项对从4个生物地理区域采集的样本的研究：近北，新热带，古北和澳大利亚。没有从东方地区获得任何样本。；结果表明，全球范围内的基因流水平很高。 F ST和GST值较低，而Nm值很高。中立性的测试表明了人口的增长，而遗传分化的测试只是报告了“无分化”。 AMOVA结果表明，大多数遗传多样性都在群体内部，而群体之间很少。这些结果表明，稳定的蝇类具有恐慌性，没有被距离或地理障碍所隔离。

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  • 作者

    Kneeland, Kathleen M.;

  • 作者单位

    The University of Nebraska - Lincoln.;

  • 授予单位 The University of Nebraska - Lincoln.;
  • 学科 Biology Entomology.;Biology Genetics.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 201 p.
  • 总页数 201
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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