The population structure and sex ratios of Bursaphelenchus xylophilus under a-pinene stress

作     者：Jing Cui Yong-Xia Li Wei Zhang Xuan Wang Long Pan Yu-Qian Feng Xing-Yao Zhang Jing Cui;Yong-Xia Li;Wei Zhang;Xuan Wang;Long Pan;Yu-Qian Feng;Xing-Yao Zhang

作者机构：Research Institute of Forestry New TechnologyChinese Academy of ForestryBeijing 100091People’s Republic of China Co-Innovation Center for Sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjing 210037People’s Republic of China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2020年第31卷第3期

页      面：921-926页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 0829[工学-林业工程] 09[农学] 0904[农学-植物保护] 0901[农学-作物学] 

基　　金：financially supported by Fundamental Research Funds of Research Institute of Forest New Technology,CAF(CAFYBB2018SY037) National Key Research and Development Program(2016YFC1200604) 

主　　题：Pine wood nematode α-Pinene Population structure Sex ratios 

摘      要：Pine wood nematode(PWN), Bursaphelenchus xylophilus, is a serious pathogen of pines throughout the world. Previous work indicated that different concentrations of a-pinene could affect nematode reproduction,however the mechanism of that influence is not clear. In order to examine the reproductive strategies of PWN in response to the stress of the volatile material a-pinene, we investigated different aspects of population changes of *** under two concentrations of a-pinene. The results show that a high concentration(214.5 mg ml-1)promoted population growth while a low concentration(56.33 mg ml-1) decreased the population. Population structure was analyzed and it was found that a high concentration of a-pinene decreased the percentage of adults but increased the percentages of larvae and ***, from the results of an evaluation of sex ratios(female/male), it was determined that a high concentration could elevate sex ratios but a low concentration decreased ratios sharply. These results suggest that the PWN could regulate its population by changing sex ratios under stress of a-pinene. This study has provided a theoretical basis for the prevention and control of pine wilt disease caused by the pine wood nematode.