稻纵卷叶螟成虫的卵巢发育与性诱剂诱捕

doi:10.16380/j.kcxb.2017.02.011

昆虫学报 ›› 2017, Vol. 60 ›› Issue (2): 211-221.doi: 10.16380/j.kcxb.2017.02.011

稻纵卷叶螟成虫的卵巢发育与性诱剂诱捕

冯波¹，郭前爽¹，朱凤²，王笑³，刘万才⁴，姜玉英⁴，钟玲⁵，杜永均^1，*

(1. 温州医科大学健康与环境生态研究所，浙江温州 325035； 2. 江苏省植物保护植物检疫站，南京 210036； 3. 宁波市江北区农技推广服务总站，浙江宁波 315021； 4. 农业部全国农业技术推广服务中心病虫测报处，北京 100125； 5. 江西省植保植检局，南昌 330096)

出版日期:2017-02-20 发布日期:2017-02-20

Ovarian development and synthetic sex pheromone lure trapping of adults of the rice leaf folder，Cnaphalocrocis medinalis (Lepidoptera： Pyralidae)

FENG Bo¹， GUO Qian-Shuang¹， ZHU Feng²， WANG Xiao³， LIU Wan-Cai⁴， JIANG Yu-Ying⁴， ZHONG Ling⁵， DU Yong-Jun^1，*

(1. Institute of Health and Environmental Ecology， Wenzhou Medical University， Wenzhou， Zhejiang 325035， China； 2. Plant Protection and Quarantine Station of Jiangsu Province， Nanjing 210036， China； 3. Jiangbei Agro-Tech Service Center， Ningbo， Zhejiang 315021， China； 4. Pest Forecasting Division， National Agro-Technique Extension and Service Center， Beijing 100026， China； 5. Plant Protection and Quarantine Station of Jiangxi Province， Nanchang 330096， China)

Online:2017-02-20 Published:2017-02-20

摘要/Abstract

摘要： 【目的】迁飞性昆虫的生理发育比较复杂，这影响了其对性诱剂的行为反应，造成了田间性诱效果的较大波动。本研究旨在明确性诱剂诱捕对不同迁飞时期田间稻纵卷叶螟Cnaphalocrocis medinalis种群的监测效果以及性诱剂诱捕与雌蛾卵巢发育之间的关系。【方法】从2015年9月开始，在浙江宁波和温州、广西宾阳及江西宁都4地，利用性诱剂和网捕法监测稻纵卷叶螟田间种群动态。解剖雌性卵巢并拍摄卵巢分级特征图。利用双变量相关性分析性诱剂诱集和雌蛾卵巢发育之间的相关性。【结果】2016年6月下旬-7月中旬宾阳县稻纵卷叶螟为迁出代和本地繁殖代的混合种群，各级别卵巢均能解剖到，但是Ⅰ-Ⅱ级卵巢的比例最高；7月上旬宁都县稻纵卷叶螟为迁入代，卵巢以Ⅳ级为主（>70%），雌蛾交配率达91.3%；9月下旬宁波北仑稻纵卷叶螟为迁出代，虫量逐渐减少至消失，卵巢处于未成熟状态，无交配发生；10月上旬温州市瓯海区稻纵卷叶螟为宁波南迁代的过境代，卵巢以Ⅱ和Ⅲ级为主，部分雌蛾完成交配，但未见雌蛾产卵。对于迁入代、过境代和本地繁殖代，网捕法和性诱法对种群动态的监测结果类似。对于迁出代，由于成虫未性成熟，性诱法不能引诱到雄蛾，但能网捕到大量成虫。相关性分析表明，对于迁入代、过境代和本地繁殖代性诱剂引诱的雄蛾数量与网捕成虫数量、网捕性成熟雌蛾数量之间均存在显著相关（P<0.05），其中与后者之间的相关性达到极显著水平（P<0.001）。【结论】性诱集可以用于准确监测迁入代、过境代和本地繁殖代田间稻纵卷叶螟种群动态。由于性诱剂监测的种群数量与稻纵卷叶螟的卵巢发育级别极显著相关，在进行防治适期或发生量预测时，性诱法可能比田间赶蛾法更有利于指导防治措施的实施。

关键词: 稻纵卷叶螟, 性诱剂, 迁飞, 卵巢发育, 种群动态

Abstract: 【Aim】 The physiological status of migratory insects is complex， and this influences the stability and accuracy of synthetic sex pheromone lure trapping. This study aims to study the efficacy of sex pheromone lure trapping on monitoring the population dynamics of the rice leaf roller， Cnaphalocrocis medinalis during different migration periods， and the relationship between sex pheromone lure trapping and ovarian development of female adults of this moth. 【Methods】 Synthetic sex pheromone lures and sweeping net were used to monitor the population dynamics of C. medinalis in four localities， i.e.， Ningbo city and Wenzhou city of Zhejiang province， Binyang county of Guangxi autonomous region and Ningdu county of Jiangxi province， from September 2015. The female ovaries were dissected and the features of female ovaries for gradation were photographed. Bivariate correlation analysis was conducted to analyze the relationship between sex pheromone lure trapping and ovarian development of female adults. 【Results】 From late June to mid July， the rice leaf roller in Binyang county was the mixed population of the emigrant and local breeding generations. Various stages of ovaries were found in Binyang county but the proportions of stagesⅠand Ⅱ ovaries were higher than those of other stages. In early July， the rice leaf roller in Ningdu county was the immigrant generation， and most ovaries (>70%) were in stage IV and the proportion of mated adults was 91.3%. Adults were moving out from Beilun district of Ningbo city in late September, and the number of adults reduced gradually till they all disappeared. The ovaries of female adults in Beilun were immature and no mating was found. The adults collected in Ouhai district of Wenzhou city in early October might be the transit generation from Ningbo city， and the number of adults reduced gradually till they all disappeared， too. Stages II and III were the main ovarian stages of C. medinalis in this region. Mating was found in some female adults in Wenzhou， but oviposition was not found. For the immigrant generation， the transit generation and the local breeding generation， the population dynamics monitored with sex pheromone lure trapping was similar to that monitored with sweeping net. Sex pheromone lure did not trap emigrant male adults， because they were sexually immature. However， emigrant adults could be collected by sweeping net. Correlation analysis showed that there was a significant correlation between the number of male adults trapped by sex pheromone lure and the number of adults collected by sweeping net (P<0.05)， and there was also an extremely significant correlation between the number of male adults trapped by sex pheromone lure and the number of sexually mature female adults (P<0.001). 【Conclusion】 Sex pheromone lure can be used for accurate monitoring of the population dynamics of C. medinalis. Due to the extremely significant correlation between the population dynamics monitored with sex pheromone lure and the ovarian developmental stages of female adults， sex pheromone lure trapping might be better than the disturbing and counting method for predicting the population levels and control time of C. medinalis.

Key words: Cnaphalocrocis medinalis, sex pheromone lure, migration, ovarian development, population dynamics

冯波, 郭前爽, 朱凤, 王笑, 刘万才, 姜玉英, 钟玲, 杜永均. 稻纵卷叶螟成虫的卵巢发育与性诱剂诱捕[J]. 昆虫学报, 2017, 60(2): 211-221.

FENG Bo, Guo Qian-Shuang, Zhu-Feng, Wang-Xiao, Liu Wan-Cai, Jiang Yu-Ying, Zhong-Ling, Du Yong-Jun. Ovarian development and synthetic sex pheromone lure trapping of adults of the rice leaf folder，Cnaphalocrocis medinalis (Lepidoptera： Pyralidae)[J]. Acta Entomologica Sinica, 2017, 60(2): 211-221.

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链接本文: http://www.insect.org.cn/CN/10.16380/j.kcxb.2017.02.011

http://www.insect.org.cn/CN/Y2017/V60/I2/211

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稻纵卷叶螟成虫的卵巢发育与性诱剂诱捕

Ovarian development and synthetic sex pheromone lure trapping of adults of the rice leaf folder，Cnaphalocrocis medinalis (Lepidoptera： Pyralidae)

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