The red palm weevil is a notorious insect pest of the palm family around the palm-growing regions of the world. This study investigated the biological effects of six commercially important date palm varieties viz. Dahki, Muzaft, Aseel, Gulistan, Begum Jungi and Fasley on red palm weevil. The newly emerged larvae were cultured on soft portion of the stem of selected varieties in plastic boxes at controlled conditions between 27 ± 2 °C and 65 ± 2% R.H. in incubators. The observations were documented on the number of eggs laid, fecundity, larval and pupal developmental periods, adult life span and sex ratio of red palm weevil. The Dhakki variety was found as the most susceptible having maximum number of eggs hatching (9.5) and weight losses (8.90 g) whereas; Fasley variety was found least susceptible having least egg hatching percentage (8.47) and weight losses (2.94). The maximum total larval developmental duration of 87.2 days was recorded on the variety Fasley which decreased to 64.8 days when red palm weevils were cultured on Dhakki variety. The maximum survival was recorded on variety Dhakki while the minimum survival was recorded on the variety Fasley. The maximum adult longevity (110 days) of female weevils was recorded on variety Dhakki while minimum adult longevity of 50.27 days was recorded on variety Fasley. Our results indicated that varieties significantly influence the development of red palm weevil and can be used as a viable tool for the management of red palm weevil.

红棕榈象甲是世界棕榈种植区的一种臭名昭著的棕榈科害虫。这项研究调查了六种具有重要商业价值的枣椰树品种的生物效应。Dahki、Muzaft、Aseel、Gulistan、Begum Jungi 和 Fasley 在研究红棕象甲。新出现的幼虫在塑料盒中选定品种茎的柔软部分上培养，培养箱中控制条件为 27 ± 2 °C 和 65 ± 2% RH。观察记录了红棕象甲的产卵数、繁殖力、幼虫和蛹的发育期、成虫寿命和性别比。Dhakki 品种被发现是最易受影响的品种，其孵化蛋数最多 (9.5)，重量损失最多 (8.90 克)，而；Fasley 品种最不受影响，其卵孵化率 (8.47) 和体重损失 (2.94) 最低。Fasley 品种的最大幼虫总发育持续时间为 87.2 天，而当红棕象甲在 Dhakki 品种上培养时，幼虫总发育持续时间减少到 64.8 天。最大存活率记录在品种 Dhakki 上，而最小存活率记录在品种 Fasley 上。雌性象鼻虫的最长成虫寿命（110天）记录在Dhakki品种上，而最短成虫寿命记录在Fasley品种上50.27天。我们的结果表明，品种对红棕象甲的发育有显着影响，可以作为红棕象甲防治的可行工具。