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Host performance of Trichogramma species on Opisina arenosella, and evaluation of their biological control efficacy

文献类型： 外文期刊

作者： Jin, Tao 1 ; Lin, Yuying 1 ; Han, Shichou 2 ; Ma, Guangchang 1 ; Wen, Haibo 1 ; Peng, Zhengqiang 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Monitoring & Control Trop Agr & Forest In, Minist Agr, Haikou 571101, Hainan, Peoples R China

2.Guangdong Inst Appl Biol Resources, Guangzhou 510260, Guangdong, Peoples R China

3.Minist Agr, Key Lab Integrated Pest Management Crops South Ch, Guangzhou 510642, Guangdong, Peoples R China

关键词： Opisina arenosella; Trichogramma embryophagum; Trichogramma japonicum; Host selectivity; Augmentative release; Biological control

期刊名称：JOURNAL OF ASIA-PACIFIC ENTOMOLOGY （ 影响因子：1.303； 五年影响因子：1.427 ）

ISSN： 1226-8615

年卷期： 2019 年 22 卷 3 期

页码：

收录情况： SCI

摘要： Five candidate species for biocontrol of Opisina arenosella Walker, a destructive pest of palm trees, were evaluated. To compare host performance, 5 Trichogramma species were allowed to parasitize O. arenosella eggs of different ages and egg densities. The parasitization capacity of two species, T. embryophagum and T. japonicum, were evaluated with respect to adult age. Treatments consisted of field with releases of T. embryophagum or T. japonicum set up in Danzhou, Hainan, and the pest densities was recorded periodically. The results showed that T. embryophagum, T. chilonis, and T. dendrolimi had a strong parasitic ability on 0-day-old O. arenosella eggs. In species comparisons, the parasitism rates of T. embryophagum on 1-day-old and 4-day-old eggs, and T. japonicum on 2-day-old, 3-day-old, and 5-day-old eggs of O. arenosella were significantly higher than those of other Trichogramma species. At densities of 40 and 35 eggs/tube (84.8 cm(3)), the numbers of eggs parasitized by T. embryophagum and T. japonicum were the highest, at 29.9 and 24.6, respectively. During the first 24-h, the numbers of eggs parasitized by T. embryophagum and T. japonicum were 110.6 and 82.2, accounting for 84.7% and 59.5%, respectively, of the total parasitized eggs. After 2 months releases, the larvae and pupa density of O. arenosella under T. embryophagum and T. japonicun treatment were 0.95 and 0.94 individuals/leaflet, respectively, were significantly lower than untreated control (1.6 individuals/leaflet). These findings encouraged that T. embryophagum and T. japonicun are able to be used for biological control for O. arenosella.

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