Effects of interspecific hybridization and number of vector insect species on invasion and genetic structure of entomophilic nematodes

种间杂交和媒介昆虫种类数量对昆虫线虫入侵和遗传结构的影响

• 批准号: 18208013
• 负责人: TOGASHI Katsumi
• 金额: $ 26.79万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18208013/
• 关键词: マツノザイセンチュウ; ニセマツノザイセンチュウ; クワノザイセンチュウ; アカマツ; エゾマツ; 媒介昆虫; 伝染病; 侵入生物; 材線虫病; トドマツ; ニセマツ; エゾフツ

Interspecific hybridization between the invasive nematode pest Bursaphelenchus xylophilus and its closely-related, native nematode B. mucronatus showed that B. mucronatus genes introgressed into B. xylophilus genome and that genes responsible for the pathogenicity and ability to board insect vectors were on the nuclear genome. There were no significant difference in the intrinsic rate of natural increase or boarding ability between some hybrid-derived populations and one or two parent populations, suggesting that such hybrid-derived populations were able to persist in the field. Field survey and DNA analysis showed that the two cerambycid species of vectors did not separate Bursaphelenchus conicaudatus populations into two genetically different subpopulations.

入侵线虫与本土线虫的种间杂交结果表明，木蠹蛾的基因已渗入到木蠹蛾的基因组中，而致病和登虫能力的基因位于木蠹蛾的核基因组上。在自然增殖率和登代能力方面，杂种群体与单亲本或双亲本群体之间没有显著差异，表明这种杂种群体能够在田间持续生存。现场调查和DNA分析表明，这两个陶粒类媒介生物并没有将松毛虫种群划分为两个遗传上不同的亚种群。

项目成果

マツノザイセンチュウとニセマツノザイセンチュウの核細胞質雑種個体群の形成と形質(2)

松鼻线虫和假松鼻线虫核质杂种种群的形成及性状（2）

• 发表时间: 2011
• 作者: Siddiqui;Z. A.;Akhtar;M. S.;Futai;K. eds.;富樫一巳・後藤聡美・廖思米・松永孝治
• 通讯作者: 富樫一巳・後藤聡美・廖思米・松永孝治

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