文献类型： 外文期刊

第一作者： Jian, H

作者： Jian, H;Reid, AP;Hunt, DJ

作者机构：

期刊名称：SYSTEMATIC PARASITOLOGY （ 影响因子：1.431； 五年影响因子：1.311 ）

ISSN： 0165-5752

年卷期： 1997 年 37 卷 2 期

页码：

收录情况： SCI

摘要： Steinernema ceratophorum n. sp. was isolated from soil in Liaoning and Jining Provinces of China. Morphological, cross-breeding and DNA studies support the distinctiveness of S. ceratophorum n. sp. in comparison with four morphologically similar Steinernema species: S. affine, S. intermedium, S. ribobrave and S. bicornutum. Diagnostic characters include: body length of infective juvenile, juvenile lip region with two horn-like structures and lateral field with six or eight longitudinal ridges; tail tip of first and second generation males lacking mucron; spicules of first generation male curved, dark yellow in colour and 71 mu m long; tail tip of first generation female with small mucronate projection; and second generation female with fine mucronate process about 5.5 mu m long. In addition, the restriction fragment length pattern (RFLP) of the ITS region of the ribosomal DNA repeat unit is different from other Steinernema spp., and S. ceratophorum n. sp. did not hybridise with S. riobrave, the species with the most similar RFLP.

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