The plant-parasitic nematodes of Iceland are poorly understood. To address this, a study of the nematodes of the families Criconematidae and Hemicycliophoridae was performed in 2015. Soil samples were taken from underneath various host plants in different locations in Iceland. The identification was performed on the basis of the general morphology and subsequently confirmed by molecular markers (D2-D3 28S rDNA). The study revealed the presence of nematode specimens belonging to four species of the family Criconematidae: Criconemoides amorphus, Criconema demani, Mesocriconema xenoplax and Mesocriconema curvatum, as well as one species Hemicycliophora conida of the family Hemicycliophoridae. To our knowledge, this is the first record of the occurrence of these nematode species in Iceland. The species identified are economically important plant-parasitic nematodes of likely interest to—among others—Icelandic plant protection professionals. This report broadens our knowledge of Iceland’s nematode biodiversity; moreover, morphological analyses and molecular data may contribute to better understanding the origin of nematode species on the island of Iceland.

中文翻译：

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冰岛植物寄生线虫的新记录

冰岛的植物寄生线虫知之甚少。为了解决这个问题，2015 年对 Criconematidae 和 Hemicycliophoridae 科的线虫进行了研究。从冰岛不同地点的各种寄主植物下面采集了土壤样本。鉴定是在一般形态的基础上进行的，随后通过分子标记（D2-D3 28S rDNA）进行确认。该研究揭示了属于 Criconematidae 科的四种线虫标本的存在：Criconemoides amorphus、Criconema demani、Mesocriconema xenoplax 和 Mesocriconema curvatum，以及 Hemicycliophoridae 科的一种 Hemicycliophora conida。据我们所知，这是这些线虫物种在冰岛出现的第一个记录。确定的物种是经济上重要的植物寄生线虫，其中可能引起冰岛植物保护专业人员的兴趣。这份报告拓宽了我们对冰岛线虫生物多样性的认识；此外，形态分析和分子数据可能有助于更好地了解冰岛岛上线虫物种的起源。