PDF
Full
Outline
In order to clearify the potential of entomopathogenic nemotodes (EPNs) on the control of Rhynchophorus ferrugineus, the pathogenucity of Heterorhabditis bacteriophora H06 against all stages of R. ferrugineus and the behavior of the invading red palm weevil larvae was studied using laboratory bioassay methods. The results showed that the mortality of eggs was the highest in all stages after R. ferrugineus was infected by EPNs, and LC50 was 104.85 IJs/mL, followed by 1-2 instar larvae, 3-4 instar larvae and 5-6 instar larvae, LC50 was 165.34 IJs/mL, 215.31 IJs/mL and 292.26 IJs/mL respectively; No significant differences were observed in the sensitivity between 7-10 instar larvae and pupae to EPNs. Among the effects of inoculation site on the mortality of different instar larvae, the mortality of the 3rd instar larvae was the highest when inoculated with spiracle and anus, which was 91.11% and 78.89% respectively, while the lethal rate of inoculation with mouthparts was the highest in the treatment of the 6th and 8th instar larvae. No significant difference presented in the mortality of different instar R. ferrugineus larvae when treated with vent inoculation. The R. ferrugineus body color changed to red or reddish brown, no spontaneous response when touching, and the body wall of R. ferrugineus shrinked after treated by EPNs. When the nematode approached the spiracle of R. ferrugineus larval, it stayed around the spiracle for a moment, and finally entered the insect body, and the number of EPNs successfully invaded was about 33.33%.
PDF
46
17
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
