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| 海岛小花蝽对美洲棘蓟马的捕食作用研究 |
| Predation function study of Orius maxidentex against Echinothrips americanus |
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| DOI： |
| 中文关键词: 海岛小花蝽 美洲棘蓟马 捕食功能 自身干扰 |
| 英文关键词:Orius maxidentex Echinothrips americanus predation function self-interference |
| 基金项目:热科院基本业务费（1630042022006）；海南省自然科学基金（322QN361）；中央级公益性科研院所基部科研业务费专项（1630042020002） |
| Author Name | Affiliation | | HAN Shan-Ni, WANG Jian-Yun, LI Jin-Lei, LIN Yu-Lun, WANG Jing-Wei, CHEN Jun-Yu, ZHANG Fang-Ping | 1. College of Plant Protection, Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Hainan University, Haikou 570228, China
2. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Hainan Engineering Research Center for Biological Control of Tropical Crops Diseases and Insect Pests, Key Laboratory of Integrated Pest Management on Tropical Crops, Ministry of Agriculture and Rural Affairs, P. R. China, Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests
Haikou 571101, China
3. College of Forestry, Hainan University, Haikou 570228, China |
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| 中文摘要: |
| 为了明确海岛小花蝽Orius maxidentex对美洲棘蓟马Echinothrips americanus的捕食情况及防治潜能，在27℃条件下研究了海岛小花蝽5龄若虫、雌成虫对美洲棘蓟马2龄若虫、伪蛹、成虫的捕食功能反应、自身密度干扰效应及喜好性。结果表明：海岛小花蝽对美洲棘蓟马的捕食功能符合HollingⅡ、HollingⅢ模型，采用HollingⅡ模型拟合，海岛小花蝽雌成虫及5龄若虫对美洲棘蓟马2龄若虫捕食能力（a′/Th）最强，分别为52.97和58.15，捕食上限最大，分别为47.38头/d和49.22头/d；采用Holling Ⅲ模型拟合，海岛小花蝽雌成虫及5龄若虫对美洲棘蓟马2龄若虫捕食上限最大，分别为27.50头/d和27.41头/d。海岛小花蝽在捕食时存在自身密度干扰情况，随着自身密度的增加单头捕食量逐渐减少，捕食作用率逐渐降低，分摊竞争强度逐渐增大，表明海岛小花蝽对美洲棘蓟马的捕食存在较强的种内干扰，符合Hassell-Varley干扰模型。捕食选择性试验表明，海岛小花蝽更偏向于捕食美洲棘蓟马2龄若虫，其次为成虫，对伪蛹偏好性最弱。综上所述，海岛小花蝽对美洲棘蓟马有较强的控害能力，是一种可应用于防治入侵昆虫美洲棘蓟马的本土天敌。 |
| 英文摘要: |
| To clarify the predation response and pest control efficacy of Orius maxidentex on Echinothrips americanus, the predatory function response, search effect, disturbance response, intensity of apportionment competition and preference of O. maxidentex (5th instar nymph and female adult) on E. americanus (2nd instar nymph, pupa and adult) were studied at 27℃. The results showed that the functional response of O. maxidentex to E. americanus were in accordance with HollingII-type and HollingIII-type disc equations. According to the HollingII-type model, the predation capability (a′/Th) to 2nd instar nymph of E. americanus of female adult and 5th instar nymph of O. maxidentex was the strongest, 52.97 and 58.15, respectively; the daily maximum consumption to 2nd instar nymph of E. americanus of female adult and 5th instar nymph of O. maxidentex was largest, 47.38 and 49.22, respectively. According to the HollingIII-type model, the daily maximum consumption to 2nd instar nymph of E. americanus of female adult and 5th instar nymph of O. maxidentex was largest, 27.50 and 27.41, respectively. The predation number gradually increases with the increase of prey density, and the increase rate slowed down after reaching a certain density; the search effect gradually decreases with the increase of prey density. A strong self-interference existed among O. maxidentex, as the predation rate decrease with the increase in the density of O. maxidentex, the self-interference fitted Hassell-Varley model. O. maxidentex adult and tended to prey 2nd instar nymph of E. americanus, positive preference for E. americanus adult, and less preference for pupa. The results supported O. maxidentex was a potential domestic natural enemy against E. americanus. |
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