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首页> 外文期刊>Biocontrol Science and Technology >Mycelia and spent fermentation broth of Beauveria bassiana incorporated into synthetic diets affect mortality, growth and development of larval Helicoverpa zea (Lepidoptera: Noctuidae).
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Mycelia and spent fermentation broth of Beauveria bassiana incorporated into synthetic diets affect mortality, growth and development of larval Helicoverpa zea (Lepidoptera: Noctuidae).

机译：将球孢白僵菌的菌丝体和用过的发酵液掺入合成饲料中会影响幼虫Helicoverpa zea（鳞翅目：夜蛾科）的死亡率，生长和发育。

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摘要

Beauveria bassiana endophytically colonises corn (Zea mays) reducing tunneling from European corn borer (Ostrinia nubilalis). Endophytic colonisation of other plants by B. bassiana has been reported, and potentially, may reduce insect feeding on these plants. We evaluated the effects on larval growth and development, and mortality of different rates of dried, ground mycelia and water-soluble metabolites from fermentation broth culture of different isolates of B. bassiana incorporated into a synthetic diet and fed to neonate bollworm, Helicoverpa zea larvae. Development was delayed, weights of larvae were lower, and mortality was high for larvae fed the highest rates (1.0 and 5.0%, w/v) of mycelia incorporated diet compared to control. Insects fed diets containing mycelia of B. bassiana isolate 11-98 had the greatest mortality. Mortality was 100% for larvae fed 5% (w/v) mycelia incorporated diet of isolate 11-98, and 61% for isolate 3-00. For insects fed low rates (0.1 to 0.5%, w/v) of mycelia incorporated diet, mortality was lower, approximately 5% for isolate 11-98, and 5 to 14% for isolate 3-00. At the 0.1% (w/v) rate of mycelia incorporated diet, development occurred at an accelerated rate, compared to fungus-free controls, indicating increased nutrition in the lowest rate fungal diet. Mortality was low for all larvae fed diets containing spent fermentation broth of B. bassiana; however, development was delayed. Insects fed the highest rate (0.5%, v/v) of spent fermentation broth-amended diet had lower pupal weights, and a greater number of days to pupation than insects fed the lowest (0.1%, v/v) rate. Insects fed the 5% (v/v) rate of spent fermentation broth of isolates 11-98 and 3-00 had the longest days to pupation.
机译：球孢白僵菌内生地定居在玉米（Zea mays）中，减少了欧洲玉米bore（Ostrinia nubilalis）的挖沟。据报道，球孢杆菌对其他植物的内生定植，可能会减少昆虫对这些植物的摄食。我们评估了B.bassiana不同菌株的发酵液培养物对幼虫生长和发育的影响，以及不同比率的干燥，磨碎的菌丝体和水溶性代谢物的死亡率，这些分离物已掺入合成饲料中并饲喂新生铃虫Helicoverpa zea幼虫。与对照组相比，饲喂最高菌丝体掺入率（1.0和5.0％，w / v）的幼虫，发育迟缓，幼虫体重降低，死亡率高。用含球芽孢杆菌分离菌11-98的饲料喂养的昆虫死亡率最高。饲喂5％（w / v）菌丝体的幼虫的死亡率为100％（分离株11-98），分离株3-00的死亡率为61％。对于饲喂低菌丝含量（0.1至0.5％，w / v）的昆虫，死亡率较低，分离株11-98约为5％，分离株3-00约为5-14％。与不含真菌的对照组相比，在加入菌丝体的饮食中添加0.1％（w / v）的速率时，发育会加快。这表明最低速率的真菌饮食中的营养增加。对于所有含有枯草芽孢杆菌发酵液的幼虫饲粮，死亡率都较低。但是，发展被推迟了。与饲喂最低（0.1％，v / v）的昆虫相比，饲喂废发酵液改良饲料的最高比率（0.5％，v / v）的昆虫had重量更轻，化to天数更多。饲喂分离株11-98和3-00的废发酵液消耗率为5％（v / v）的昆虫化p的时间最长。

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