棕榈红棕象甲生物学特性研究

摘要

[目的] 研究棕榈红棕象甲(Rhynhophorus ferrugineus Fabricius)的生物学特性.[方法] 采用室内饲养观察与室外调查相结合的方法.[结果] 棕榈红棕象甲在广西南宁市1年发生3代,以老熟幼虫、蛹、成虫在寄主植物组织内越冬.成虫对频振式诱虫灯、黄色光灯具有较强的趋性;卵散产,多产于寄主幼嫩叶鞘组织内;室内常温条件下,平均每雌虫产卵量为(370.6±0.8)粒;在26 ℃恒温条件下,幼虫共有13龄.1年内各代幼虫出现期为:3月中旬至5月、5～9月和7月至翌年3月.成、幼虫均可为害寄主植物的心叶和茎秆内组织.该虫在南宁市主要为害国王椰、老人葵、加拿利海枣、霸王棕等植物.[结论] 为棕榈红棕象甲的防治奠定了基础.%[Objective] The research aimed to study the biological characteristics of palm Rhynhophorus ferrugineu Fabricius. [Method]The method of combining inside observation and outside survey was chose to made the test.[Recult]The palm Rhynhophorus ferrugineu Fabricius has 3 generations each year in Nanning, and the mature larva, the pupae and the adult wintered inside the host plant tissue. Its dults are made the more strongly taxis to the yellow light lamps and frequency trembler lamps. Its eggs are laid sparsely and mainly laid inside tender sheath tissue of host plant. In the conditions of constant indoor temperature an average female produces (370.67±0.8) eggs, the larvas are common of 13 ages at the constant 26 ℃. Each generation of larva occurred from the second ten days of March to May, form May to September, from July to March in coming year during a year. Adults and larvas all could damage central leaf and stem tissue of host plant. Rhynhophorus ferrugineus Fabricius mainly hazarded king coconut, Washingtonia filifera, Phoenix canariensis and Bismarckia nobilis and so on in Nanning City. [Conclusion] The study can provide the basis for the prevention and control of palm Rhynhophorus ferrugineu Fabricius.