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| 斑痣悬茧蜂对不同龄期亚洲玉米螟的寄生功能反应及子代发育表现 |
| Parasitic functional response and offspring development performance of Meteorus pulchricornis on different instars of Ostrinia furnacalis |
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| DOI： |
| 中文关键词: 斑痣悬茧蜂 功能反应 寄主龄期 生物防治 亚洲玉米螟 |
| 英文关键词:Meteorus pulchricornis functional response host instar biological control Ostrinia furnacalis |
| 基金项目:中烟黔科[2022]1号（2022XM09）；遵烟计[2022]6号（2022XM12）；中国烟草总公司贵州省公司重大专项项目[2023XM07] |
| Author Name | Affiliation | | TANG Zi-Yuan, MU Qing, YANG Chang-Li, ZHANG Chang-Yu | 1. Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang 550025, China
2. Qianxinan Branch of Guizhou Provincial Tobacco Company, Xingyi 562400, Guizhou Province, China |
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| 中文摘要: |
| 为评估斑痣悬茧蜂Meteorus pulchricornis（Wesmael）对亚洲玉米螟Ostrinia furnacalis（Guenée）的寄生潜能，在室内条件下研究了斑痣悬茧蜂对亚洲玉米螟3龄和4龄幼虫的寄生功能反应、搜寻效应及子代发育情况。结果表明，斑痣悬茧蜂对亚洲玉米螟不同龄期幼虫的寄生功能反应均符合Holling Ⅱ型模型；对不同龄期寄主的寄生表现为，对3龄寄主的寄生效能和搜寻效应均高于4龄；对不同龄期子代发育表现的结果表明，寄主龄期显著影响子代蜂的幼虫发育历期和蛹历期，以4龄幼虫为寄主的子代蜂幼虫发育历期（10.72 d）和蛹历期（6.09 d）均显著长于寄生3龄寄主的历期；但寄主龄期对子代蜂幼虫的化蛹率和成虫羽化率无显著影响。研究结果表明，斑痣悬茧蜂对亚洲玉米螟3龄幼虫的寄生效能更高，但对子代适合度而言，斑痣悬茧蜂以选择龄期（体型）大的寄主寄生容易获得较高的子代适合度。 |
| 英文摘要: |
| To evaluate the parasitic potential of Meteorus pulchricornis (Wesmael) on Ostrinia furnacalis, the parasitic functional response, searching efficiency, and offspring development of M.pulchricornis on the 3rd and 4th instar larvae of O. furnacalis were studied under laboratory conditions. The results showed that the parasitic functional responses of M.pulchricornis to different instar larvae of O.furnacalis conformed to the Holling II model. Regarding parasitism performance on hosts of different instars, both the parasitic efficacy and searching efficiency on 3rd instar larvae were higher than those on 4th instar larvae. The results of offspring development from different instars showed that the host instar significantly affected the offspring's larval development duration and pupal duration. The larval duration (10.72 d) and pupal duration (6.09 d) of offspring wasps that developed from the 4th instar hosts were significantly longer than those of the 3rd instar larvae. Nevertheless, the host instar had no significant effect on the pupation rate and adult eclosion rate of offspring larvae. These findings suggest that M. pulchricornis exhibits higher parasitic efficacy against 3rd instar larvae of O. furnacalis, but parasitizing older (larger) larvae may result in higher fitness of the offspring. |
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