| 钟涛，范唯艳，许国庆，赵彤华,2020,辽宁地区迁飞黏虫种群动态与发生规律研究[J].环境昆虫学报,42(1):111-120 |
| 辽宁地区迁飞黏虫种群动态与发生规律研究 |
| The study of occurrence dynamics of the migratory population of oriental armywormMythimna separata (Walker) in Liaoning |
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| DOI： |
| 中文关键词: 黏虫 种群动态 诱集监测 种群虫源性质 |
| 英文关键词:Mythimna separata occurrence dynamics monitoring and trapping the composition of migrant population |
| 基金项目:公益性行业（农业）科研专项（201403031）；农业基础性长期性科技工作植物保护观测监测任务（ZX04S060101） |
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| 中文摘要: |
| 为揭示沈阳和岫岩地区迁飞黏虫种群动态规律，本研究利用高空探照灯对迁入和迁出黏虫种群进行了监测，基于气象数据对2017-2018年沈阳和岫岩地区黏虫蛾发生时间、峰期和虫源性质进行了分析，旨在为黏虫灾害预防和异地测报提供参考。结果表明，辽宁地区黏虫蛾发生主要有2个峰期，一代蛾均为外地迁入种群，二代蛾羽化后随气流迁出。沈阳和岫岩两地均位于我国黏虫蛾南北往返迁飞路径之上。沈阳地区监测到黏虫蛾首发日期为5月11日，迁入期为5月中旬至6月上旬，峰期出现在5月底至6月上旬末；二代蛾迁出时期从7月上旬持续至8月上旬结束；三代蛾发生期不规整，8月中旬至9月中旬均有黏虫蛾上灯活动。岫岩地区监测的一代蛾发生期为5月底至6月上旬，迁出时期从7月中旬至8月中旬。降雨等气象活动是导致辽宁地区三代黏虫高发的重要原因，黏虫高发风险是东北北部地区种群南迁过境辽宁时相继迫降和本地外迁受阻种群共同繁殖的结果。 |
| 英文摘要: |
| To investigate the occurrence dynamics of armyworm, Mythimna separata (Walker), in Shenyang and Xiuyan districts, we monitored the moth of armyworm using the giant light beam to trap the population migrating across Shenyang with the aid of vertical pointing searchlight traps from 2017 to 2018. Based on the meteorological data, we analyzed the appearance period, peak date of armyworm moth and its composition of the migratory population. Our study aims to be used for reference in armyworm disaster prevention and allopatry forecast. We conclude that there are two major peak periods of armyworm in Liaoning Province, and the first generation of armyworm is totally immigrant population, and the second generation of armyworm emigrates with the upward airflowShenyang and Xiuyan districts both locate on the armyworm migratory flight route and their return. The first appearance of armyworm moth was recorded on 11thMay, and peak duration was from late May to early June. The first generation of immigrant armyworm moth was from mid May to early June. We also monitored that the second generation peak duration was held from early July to early August. The third generation was totally irregular, from mid August to mid September. The first generation of immigrant armyworm moth in Xiuyan district was held from late May to early June, the migrant period was from mid July to mid August. Rainfall and other meteorological activities are the major cause of outbreak for the third generation of armyworm. The rampant infestation is an integrated outcome of two pest sources in fused reproduction, one source is local emigrant population which hindered by meteorological factors, and the other source is sequential immigrant populations from Northern China to Liaoning districts. |
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