Performance of the Wheat Armyworm, Pseudaletia sequax Franclemont, on Natural and Artificial Diets
Performance of the Wheat Armyworm, Pseudaletia sequax Franclemont, on Natural and Artificial Diets
复制标题
DOI：
10.1007/s13744-012-0046-8
复制
发表时间：
2012-08-01
影响因子：
1.8
通讯作者：
Foerster, L. A.
中科院分区：
文献类型：
--
作者：
Marchioro, C. A.;Foerster, L. A.
粘虫是世界性的重要禾谷类害虫。害虫管理策略的发展在很大程度上取决于对害虫、其寄主植物和天敌之间的关系以及其对化学和生物控制策略的敏感性的研究。这些研究的一部分需要在实验室条件下饲养感兴趣的物种，这可以通过使用人工饲料来大大促进。本研究比较了3种人工饲料对北美象甲和天然寄主狼尾草生长发育、存活、繁殖和种群统计学参数的影响。饮食的基础上，平托豆，小麦胚芽和酵母提供了最好的结果相比，与宿主植物。用于评价饲料营养质量的最重要的生活史参数是繁殖力、卵活力和蛹畸形。结果表明，人工饲料的内禀增长率和净繁殖率均高于寄主，说明人工饲料适合于饲养美洲大蠊。该人工饲料已成功地用于连续18代以上的南美白对虾的饲养，没有任何适合度效应。
Armyworms in the genus Pseudaletia Franclemont are important pests of cereal crops worldwide. The development of pest management strategies is largely dependent on studies involving the relationship among the pest, its host plants and natural enemies, as well as its susceptibility to chemical and biological control strategies. Part of these studies requires rearing the species of interest under laboratory conditions, which can be greatly facilitated by the use of artificial diets. In the present study, the effects of three artificial diets on development, survival, reproduction and demographic parameters of P. sequax were compared to a natural host plant, Pennisetum clandestinum. A diet based on pinto beans, wheat germ and torula yeast provided the best results in comparison to those obtained with the host plant. The most important life history parameters used in the evaluation of the nutritional quality of the diets were fecundity, egg viability and pupae deformities. The intrinsic rate of increase and the net reproductive rate were higher when individuals were fed on the artificial diet if compared to the host plant, indicating the suitability of the tested diet for the rearing of P. sequax. This artificial diet has been used successfully for the rearing of P. sequax without any fitness effect for over 18 consecutive generations.