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Pathogenicity of nuclear polyhedrosis virus to Galleria mellonella L. (Lepidoptera: Pyralidae) and its control on stored beeswax foundations
Egyptian Journal of Biological Pest Control ( IF 2.1 ) Pub Date : 2020-08-05 , DOI: 10.1186/s41938-020-00302-4
Monir M. El Husseini

A nuclear polyhedrosis virus (GmMNPV) was isolated from the greater wax moth, Galleria mellonella L. (Lepidoptera: Pyralidae) larvae from a dead laboratory colony. A semi-synthetic diet was used for rearing G. mellonella at room conditions of 25–30 °C and 60–70% relative humidity. The polyhedral inclusion bodies (PIBs) of the virus were extracted and bio-assayed versus larvae of L3 of G. mellonella in 5 concentrations, i.e., 2 × 102, 2 × 103, 2 × 105, 2 × 107, and 2 × 108 PIBs/ml mixed in the diet (1 ml:1 g). Histopathological study was carried out through a light microscopy of 6–8 μm cross sections in larvae fed on diet contaminated with the virus (2 × 108 PIBs/ml in 1 g diet). The virus infected the nuclei in all organ cells of both ectodermal origins, e.g., hypoderm, tracheal epithelial cells, cells of salivary glands, epithelial cells of fore- and hindgut, and those of mesodermal origin, e.g., fat bodies and cortex of ganglia of the nervous system. Experimental protection of artificially infested beeswax foundations by spraying (2 × 107 PIBs/ml) kept the wax foundations weight loss at 0.4% for 4 months storing, while those artificially infested without virus treatment were completely devoured (100%) by larvae of the pest within 4 months due to successive pest generations. This treatment is recommended for protecting the stored beeswax foundations and combs as a safe alternative to the traditional hazardous chemical insecticides.

中文翻译:

核多角体病毒对梅勒菌(鳞翅目:Pyralidae)的致病性及其对贮藏蜂蜡粉底的控制

从一个较大的蜡蛾,一个死去的实验室菌落中分离出一种核多角体病毒(GmMNPV),该菌是从Malleria mellonella L.(鳞翅目:Pyralidae)幼虫中分离出来的。半合成饮食用于在25–30°C和60–70%相对湿度的室内条件下饲养梅花菌。提取该病毒的多面体包涵体(PIB),并与5种浓度即2×102、2×103、2×105、2×107和2×108的梅花假丝酵母L3的幼虫进行生物测定。日粮中混合的PIB / ml(1 ml:1 g)。组织病理学研究是通过对受病毒污染的日粮(1 g日粮中2×108 PIBs / ml)喂养的幼虫进行6–8μm横截面的光学显微镜进行的。该病毒感染了两个外胚层起源的所有器官细胞的核,例如皮下组织,气管上皮细胞,唾液腺细胞,前肠和后肠的上皮细胞,以及中胚层来源的上皮细胞,例如神经系统的脂肪体和神经节的皮层。通过喷洒(2×107 PIBs / ml)进行人工感染的蜂蜡粉底液的实验保护可将蜡粉底液的重量损失保持在0.4%储存4个月,而未经病毒处理的人工感染的蜂蜡粉底液则被害虫的幼虫完全吞噬了(100%)由于害虫连续产生,在4个月内。建议使用这种处理方法来保护储存的蜂蜡粉底和梳子,以作为传统危险化学杀虫剂的安全替代品。通过喷洒(2×107 PIBs / ml)进行人工感染的蜂蜡粉底液的实验保护可将蜡粉底液的重量损失保持在0.4%储存4个月,而未经病毒处理的人工感染的蜂蜡粉底液则被害虫的幼虫完全吞噬了(100%)由于有害生物的连续产生,在4个月内。建议使用这种处理方法来保护储存的蜂蜡粉底和梳子,以作为传统危险化学杀虫剂的安全替代品。通过喷洒(2×107 PIBs / ml)进行人工感染的蜂蜡粉底液的实验保护可将蜡粉底液的重量损失保持在0.4%储存4个月,而未经病毒处理的人工感染的蜂蜡粉底液被害虫的幼虫完全吞噬了(100%)由于有害生物的连续产生,在4个月内。建议使用这种处理方法来保护储存的蜂蜡粉底和梳子,以作为传统危险化学杀虫剂的安全替代品。
更新日期:2020-08-06
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