Fungal Pathogens on Some Lepidopteran Forest Pests in Bulgaria
Fungal Pathogens on Some Lepidopteran Forest Pests in Bulgaria
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保加利亚一些鳞翅目森林害虫的真菌病原体
DOI：
10.1007/s11046-010-9321-6
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发表时间：
2013
期刊：
影响因子：
5.5
通讯作者：
G. Georgiev
中科院分区：
文献类型：
--
作者：
S. Draganova;D. Takov;D. Pilarska;D. Doychev;P. Mirchev;G. Georgiev
对7种鳞翅目森林害虫自然种群中的昆虫病原真菌进行了分离鉴定。球孢白僵菌为优势种，其次为镰刀菌和曲霉，松褐变蛾受B影响最大。白僵菌-占分析的害虫死亡幼虫的66.7%。B的出现。保加利亚首次记录到在天幕毛虫、绿胸叶蜂和黑胸叶蜂中发现的巴西小蜂。测定了舞毒蛾1 ~ 2龄幼虫对3种B的相对敏感性。3龄幼虫对7种B. bassiana和M.绿僵菌分离株生物测定结果表明，L.舞毒蛾幼虫对受试B引起的真菌病具有耐受性。bassiana分离物和M.绿僵菌M.金龟子绿僵菌分离物对1 ~ 2龄幼虫的致死率最高为56.67% ± 4.84，B为B。在17天内，561 Bb和575 Bb对3龄幼虫的毒力分别为47.78% ± 4.06%和34.44% ± 3.28%。
Fungal entomopathogens found in natural populations of 7 lepidopteran forest pests were isolated and identified. Beauveria bassiana was established as a dominating species followed by Fusarium sp. and Aspergillus sp. The pine processionary moth Thaumetopoea pityocampa was the most affected by B. bassiana – 66.7% of the analysed dead larvae of the pest. The occurrence of B. bassiana in Malacosoma neustria, Tortrix viridana and Melitaea didyma is the first record in Bulgaria. Relative susceptibility of first-second instar Lymantria dispar larvae was estimated to three B. bassiana and one Metarhizium anisopliae isolate and susceptibility of third instars – to seven B. bassiana and one M. anisopliae isolate. The bioassays showed that L. dispar larvae were tolerant to mycoses caused by the tested B. bassiana isolates and M. anisopliae. M. anisopliae isolate caused mycosis to first-second instar larvae with the highest lethal effect 56.67% ± 4.84 and B. bassiana isolates 561Bb and 575Bb to third instar larvae – 47.78% ± 4.06 and 34.44% ± 3.28, respectively, in 17 days period.