Inundative release of Trichogramma dendrolimi at different developmental stages enhances the control efficacy over Ostrinia furnacalis

IF 4.3 1区农林科学 Q1 ENTOMOLOGY Journal of Pest Science Pub Date : 2024-02-06 DOI:10.1007/s10340-023-01731-4

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引用次数: 0

Abstract

The Asian corn borer (ACB), Ostrinia furnacalis, is a serious maize pest in Southeast Asia, responsible for substantial economic losses to the maize crop every year. To establish insect biocontrol programmes, it is crucial to determine the ideal numbers and developmental stage of natural enemies to release. The purpose of the present study was to assess the parasitism ability of Trichogramma dendrolimi and Trichogramma ostriniae, which are the most promising biocontrol agents of the ACB, under two different methods of inundative release in maize fields. A total of 10,000 wasps of both species were released using two different methods, i.e. wasps at the same developmental stage (SDS) and wasps at different developmental stages (DDS). The results showed that T. dendrolimi wasps exhibited significantly higher parasitism of ACB eggs when they were released with the DDS method than when they were released with the SDS method. In the SDS release method, T. dendrolimi parasitized ACB eggs for only 3 days after release, while in the DDS release method, parasitism of ACB eggs occurred for 6 days. However, the two release methods had no significant impact on the performance of T. ostriniae in maize fields. In both release methods, T. ostriniae parasitized a high percentage of ACB eggs. The results of the present study clearly indicate that the poor field performance of T. dendrolimi due to the host-age factor can be improved using the DDS release method.

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在不同发育阶段淹没式释放树枝金龟子可提高对赤潮虫的防治效果

摘要亚洲玉米螟（ACB）（Ostrinia furnacalis）是东南亚地区一种严重的玉米害虫，每年都会给玉米作物造成巨大的经济损失。要制定昆虫生物防治计划，确定释放天敌的理想数量和发育阶段至关重要。本研究的目的是评估两种不同的玉米田淹没释放方法下稻蓟马天敌（Trichogramma dendrolimi 和 Trichogramma ostriniae）的寄生能力。采用两种不同的方法，即相同发育阶段（SDS）和不同发育阶段（DDS）的小蜂，共释放了 10,000 头两种小蜂。结果表明，用 DDS 法释放的树枝蝠对 ACB 卵的寄生率明显高于用 SDS 法释放的树枝蝠。在 SDS 释放法中，T. dendrolimi 寄生 ACB 卵的时间仅为释放后的 3 天，而在 DDS 释放法中，T. dendrolimi 寄生 ACB 卵的时间为 6 天。不过，这两种释放方法对玉米田中的褐飞虱表现没有显著影响。在两种释放方法中，T. ostriniae 都寄生了很高比例的 ACB 虫卵。本研究的结果清楚地表明，由于寄主-年龄因素造成的 T. dendrolimi 田间表现不佳的情况可以通过 DDS 释放方法得到改善。

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来源期刊

Journal of Pest Science 生物-昆虫学

CiteScore

10.40

自引率

8.30%

发文量

114

审稿时长

6-12 weeks

期刊介绍： Journal of Pest Science publishes high-quality papers on all aspects of pest science in agriculture, horticulture (including viticulture), forestry, urban pests, and stored products research, including health and safety issues. Journal of Pest Science reports on advances in control of pests and animal vectors of diseases, the biology, ethology and ecology of pests and their antagonists, and the use of other beneficial organisms in pest control. The journal covers all noxious or damaging groups of animals, including arthropods, nematodes, molluscs, and vertebrates. Journal of Pest Science devotes special attention to emerging and innovative pest control strategies, including the side effects of such approaches on non-target organisms, for example natural enemies and pollinators, and the implementation of these strategies in integrated pest management. Journal of Pest Science also publishes papers on the management of agro- and forest ecosystems where this is relevant to pest control. Papers on important methodological developments relevant for pest control will be considered as well.