Performance of a semiochemical‐baited autoinoculation device treated with Metarhizium anisopliae for control of Frankliniella occidentalis on French bean in field cages
Performance of a semiochemical‐baited autoinoculation device treated with Metarhizium anisopliae for control of Frankliniella occidentalis on French bean in field cages
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用绿僵菌处理的化学信息素诱饵自动接种装置用于控制田间笼中法国菜豆上的西花蓟马的性能
DOI：
10.1111/j.1570-7458.2011.01203.x
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发表时间：
2012
影响因子：
1.9
通讯作者：
S. Ekesi
中科院分区：
文献类型：
--
作者：
S. Niassy;N. K. Maniania;S. Subramanian;L. Gitonga;S. Ekesi
在田间笼内试验中，评价了自动接种装置控制菜豆花蓟马Frankliniella ocumentalis（Pergande）（Thysanoptera：蓟马科）的性能。变种Samantha（Fabaceae）.处理包括含和不含化学信息素的真菌处理器械（Lurem-TR）和作为对照的无真菌器械;使用的真菌为金龟子绿僵菌（Metchnikoff）Sorokin（肉座菌目：棒菌科）。在经真菌处理的化学信息素诱饵装置中，单个昆虫获得的分生孢子的总体平均数量高于不含化学信息素的装置：5.0 ± 0.6 × 104个分生孢子/昆虫对比2.2 ± 0.4 × 104个分生孢子/昆虫。 化学信息素诱饵装置中的总体蓟马死亡率也高于不含化学信息素的装置：59.3 ± 3.9 vs. 41.7 ± 3.5%。 分生孢子活力在M.在处理后7天，在不含化学信息素的绿僵菌处理装置中，其显著降低-从81.0± 1.3%降至6.5 ± 1.1%（接种后2天和7天）。 绿僵菌处理的化学信息素诱饵装置。蓟马死亡率与M.绿僵菌分生孢子活力与产孢量呈负相关。这表明化学信息素挥发物降低了分生孢子活力，这反过来导致蓟马死亡率显著降低，尽管在化学信息素诱饵真菌处理的装置中分生孢子获得最高。与无真菌对照（每株植物19.8± 2.6只成虫）相比，在两种真菌处理的处理中每株植物的蓟马密度显著降低（有化学信息素：每株植物8.7 ±1.7只成虫;没有化学信息素：每株植物6.6 ±1.4只成虫）。 这些结果表明，潜在的自动接种装置的战略控制蓟马，特别是在大棚。
The performance of an autoinoculation device was evaluated in field cage experiments for control of Western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), in French bean, Phaseolus vulgaris L. var. Samantha (Fabaceae). Treatments consisted of a fungus‐treated device with and without semiochemical (Lurem‐TR), and a fungus‐free device as control; the fungus used was Metarhizium anisopliae (Metchnikoff) Sorokin (Hypocreales: Clavicipitaceae). The overall mean number of conidia acquired by a single insect was higher in the fungus‐treated semiochemical‐baited device than in the device without semiochemical: 5.0 ± 0.6 × 104 vs. 2.2 ± 0.4 × 104 conidia per insect. The overall thrips mortality was also higher in the semiochemical‐baited device than in the device without the semiochemical: 59.3 ± 3.9 vs. 41.7 ± 3.5%. Conidial viability was not affected in the M. anisopliae‐treated device without semiochemicals, 7 days after treatment, whereas it was considerably decreased – from 81.0 ± 1.3 to 6.5 ± 1.1%, 2 and 7 days post‐inoculation – in the M. anisopliae‐treated semiochemical‐baited device. Thrips mortality was positively correlated with M. anisopliae conidial viability, and conidial viability was negatively correlated with conidial acquisition. This suggests that the semiochemical volatiles reduced the conidial viability, which in turn resulted in significant reduction in thrips mortality, despite the highest conidial acquisition in the semiochemical‐baited fungus‐treated device. Thrips density per plant was significantly reduced in both fungus‐treated treatments (with semiochemical: 8.7 ± 1.7 adults per plant; without semiochemical: 6.6 ± 1.4 adults per plant) compared with the fungus‐free control (19.8 ± 2.6 adults per plant). These results demonstrate the potential for an autoinoculation device strategy for the control of thrips, particularly in screenhouses.