Elsharkawy Mohsen Mohamed, Almasoud Mustafa, Alsulaiman Yasser Mohamed, Baeshen Rowida S, Elshazly Hayam, Kadi Roqayah H, Hassan Mohamed M, Shawer Rady
Department of Agricultural Botany, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt.
Palms and Dates Center, Ministry of Environment, Water and Agriculture, Al Ahsa 31982, Saudi Arabia.
Insects. 2022 Oct 5;13(10):905. doi: 10.3390/insects13100905.
The Red Palm Weevil ( (Oliv.) (Coleoptera, Dryophthoridae) is a well-known palm tree pest that has caused enormous economic damage all over the globe. Insecticides are still the primary method of controlling this pest at this period. However, field populations of RPW have been shown to be resistant to pesticides. Using spp. might be one of the options for controlling . In this study, 23 species of spp. were isolated from the rhizosphere of date palm trees in Al Ahsa Oasis, Saudi Arabia. The isolates were identified using 16S rRNA gene sequencing. larvae and adults were tested on sugarcane pieces that were treated with the strain PDC-AHSAA1 and strains (PDC-AHSAA2, PDC-AHSA3 and PDC-AHSA4). The LC values for larvae and adults were quite low when they were compared with those of the other isolated strains. The strain PDC-AHSAA1 was more effective against both the larvae and adults. The determined LC values for ranged from 4.19 × 10-3.78 × 10. After 21 days, the data on larval mortality and body weight were evaluated. The surviving larvae that were treated with the bacterial isolates did not acquire a substantial weight. For the RPW larvae and adults, the mortality and corrected mortality death rates were increased by increasing the concentration of . In conclusion, -treated diets negatively influenced the growth and development of the RPW. This research reported on the interaction between the RPW and the rhizosphere spp. and highlighted the tremendous potential for the development of microbial resource-based control strategies for this pest.
红棕象甲（(Oliv.)（鞘翅目，棕榈象甲科）是一种著名的棕榈树害虫，在全球范围内造成了巨大的经济损失。在此期间，杀虫剂仍然是控制这种害虫的主要方法。然而，已表明红棕象甲的田间种群对杀虫剂具有抗性。使用 spp. 可能是控制 的选择之一。在本研究中，从沙特阿拉伯艾哈萨绿洲枣椰树的根际分离出23种 spp.。使用16S rRNA基因测序对分离株进行鉴定。用菌株PDC - AHSAA1和 菌株（PDC - AHSAA2、PDC - AHSA3和PDC - AHSA4）处理甘蔗块，对红棕象甲幼虫和成虫进行测试。与其他分离菌株相比，幼虫和成虫的LC值相当低。菌株PDC - AHSAA1对幼虫和成虫都更有效。测定的 的LC值范围为4.19×10 - 3.78×10。21天后，评估幼虫死亡率和体重数据。用细菌分离株处理的存活幼虫体重没有显著增加。对于红棕象甲幼虫和成虫，死亡率和校正死亡率随着 浓度的增加而增加。总之，用 处理的饲料对红棕象甲的生长和发育产生负面影响。本研究报道了红棕象甲与根际 spp. 之间的相互作用，并强调了开发基于微生物资源的该害虫控制策略的巨大潜力。
