| 胡昌雄1, 2#, 李宜儒1#, 吕布典1, 殷红慧3, 徐天养3, 胡加云3, 陈国华1*, 张晓明1*.辣椒田蓟马及主要捕食性天敌昆虫种类与时间生态位[J].植物保护,2022,48(5):38-46. |
| 辣椒田蓟马及主要捕食性天敌昆虫种类与时间生态位 |
| Species and temporal niches of thrips and their main predatory insects in Capsicum annuum fields |
| 投稿时间：2021-07-07 修订日期：2021-09-08 |
| DOI：10.16688/j.zwbh.2021385 |
| 中文关键词: 辣椒 蓟马 天敌 种群 时间生态位 |
| 英文关键词:Capsicum annuum thrips natural enemy population temporal niches |
| 基金项目:云南省基础研究专项面上项目(202001AT070134); 云南省中青年学术技术带头人后备人才项目(202105AC160071); “云南省高层次人才培养支持计划”青年拔尖人才项目(YNWRQNBJ2020291); 中国烟草总公司云南省公司科技计划(2018530000241015) |
| 作者 | 单位 | E-mail | | 胡昌雄1, 2#, 李宜儒1#, 吕布典1, 殷红慧3, 徐天养3, 胡加云3, 陈国华1*, 张晓明1* | 1. 云南农业大学植物保护学院, 云南生物资源保护与利用国家重点实验室, 昆明 650201
2. 云南省农业科学院蚕桑蜜蜂研究所, 蒙自 661101
3. 云南省烟草公司文山州公司, 文山 663000 | 陈国华ghchen@126.com; 张晓明zxmalex@126.com |
|
| 摘要点击次数: 415 |
| 全文下载次数: 576 |
| 中文摘要: |
| 为明确辣椒田蓟马及主要捕食性天敌昆虫种类和发生规律?于2019年和2020年对昆明市盘龙区辣椒田的蓟马及主要捕食性天敌昆虫的种类及种群数量进行了调查, 并进行了时间生态位分析?结果表明, 辣椒田蓟马种类共有10种, 优势种为西花蓟马Frankliniella occidentalis?黄蓟马Thrips flavus?八节黄蓟马T. flavidulus和花蓟马F. intonsa, 其中西花蓟马的优势度最高, 两年分别为0.593和0.551; 主要捕食性天敌昆虫有南方小花蝽Orius similis?二叉小花蝽O. bifilarus和异色瓢虫Harmonia axyridis, 其中南方小花蝽优势度最高, 两年分别为0.759和0.728?两年中, 西花蓟马的种群数量随时间变化波动幅度最大, 在7月中上旬数量最高值两年分别为66.5头/m2和61.5头/m2, 而捕食性天敌昆虫活动高峰时间滞后于蓟马?2019年黄蓟马时间生态位宽度最高, 为0.80; 2020年八节黄蓟马时间生态位宽度最高, 为0.87?黄蓟马和八节黄蓟马同其他优势种蓟马的生态位重叠指数高, 两种蓟马在时间序列上活动情况相似?3种捕食性天敌的时间生态位宽度和生态位重叠指数相近, 在辣椒田存在一定的竞争作用?辣椒田蓟马发生量大且种类呈现多样性, 其中西花蓟马种群数量较高, 应着重对其进行防治?南方小花蝽?二叉小花蝽?异色瓢虫是控制辣椒蓟马的主要捕食性天敌昆虫, 在辣椒花期前以及各种农事操作时尽可能保护其种群数量, 增强天敌对蓟马的自然控害功能? |
| 英文摘要: |
| In order to clarify the species and population dynamics of thrips and their main predatory insects, the species of thrips and their natural enemy and population size in Capsicum annuum fields were investigated in Panlong district, Kunming city in 2019 and 2020, and the temporal niches were analyzed. The results showed that 10 thrips species were collected in C. annuum fields, and the dominant thrips species were Frankliniella occidentalis, Thrips flavus, T. flavidulus and F.intonsa. F. occidentalis has the highest dominance index of 0.593 and 0.551 in these two years, respectively. The main predatory insects were Orius similis, O. bifilarus and Harmonia axyridis. Among which O. similis has the highest dominance index of 0.759 and 0.728, respectively in the two years. The population size of F. occidentalis has maximum fluctuation range over time in the two years, the highest population size was observed in early-to-mid July (66.5 and 61.5 individuals per square meter of sampling plot, respectively). However, the peak periods of predatory insects lagged behind that of thrips. T. flavus had the highest value of temporal niche breadth (0.80) in 2019, while T. flavidulus had the highest value of temporal niche breadth (0.87) in 2020. T. flavus and T. flavidulus had a high niche overlap index compared with other dominant species of thrips, and these two species of thrips had similar activities in temporal niches. These three predatory insects had similar temporal niche breadth and niche overlap index during sampling, and therefore, they had slight competition in C. annuum fields. Thrips population size in C. annuum fields was higher than that of other insects, and F. occidentalis was the most dominant species, which should be focused on in pest control. Orius similis, O. ifilarus and H. axyridis were the main predatory natural enemies for controlling thrips in C. annuum fields. It would be better to protect their population as much as possible and enhance the control function of natural enemies against thrips before the flowering period of C. annuum and during various agricultural management practices. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
