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首页> 外文期刊>Journal of Economic Entomology >Impact of Age on the Biological Activities of Sitophilus zeamais (Coleoptera: Curculionidae) Adults on Stored Maize: Implications for Food Security and Pest Management
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Impact of Age on the Biological Activities of Sitophilus zeamais (Coleoptera: Curculionidae) Adults on Stored Maize: Implications for Food Security and Pest Management

机译：年龄对沥青药（鞘翅类：Curculionidae）成人的生物活性的影响：对粮食安全和害虫管理的影响

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The present work was undertaken in three successive years in three different regions of Nigeria to study the impact of age on the postharvest biological performance of maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) adults infesting maize grain. Eight different age groups of S. zeamais adults which ranged from 1 to 56 d were used. The study assessed important parameters and was carried out using standard methods at mean temperature and relative humidity of 28.2 degrees C and 87.5%, respectively. Results indicated that age affected bionomics of S. zeamais adult infesting maize grain in storage. The minimum age threshold for prolific oviposition in the females was 8 d. Weevils in the age groups 8-14 and 15-21 d showed highest fecundity.There was no effect of age on progeny emergence and development time for weevils younger than 36 d. Consequent upon infestation, only S. zeamais adults of = 35 d old caused great damage and loss to grains in storage.The susceptibility of infesting weevil to cypermethrin was not greatly influenced by weevil age except at an elderly age of = 43 d. Observations signal that weevil adults are physiologically fittest at = 14 d old but indicate that adults of = 35 d old pose the highest food security threat. The S. zeamais ecotype studied showed resistance to the pyrethroid insecticide at 24 h evaluation period and that also has implications for food security.
机译：目前的工作是在尼日利亚三个不同地区的三个不同地区进行的，研究了年龄对玉米韦氏毒素的前期生物学性能的影响，Zeamais Motschulsky（植物植物：Curculionidae）的成人感染玉米谷物。使用从1至56天的八个不同年龄组的S. Zeamais成年人。该研究评估了重要参数，并在平均温度和28.2℃和87.5％的相对湿度下使用标准方法进行。结果表明，年龄影响S. Zeamais成人的生物学侵入玉米籽粒储存。女性在女性中的最小年龄阈值为8 d。年龄组8-14和15-21 d中的象鼻虫显示出最高的繁殖力。在比36天的象鼻虫的后代出现和发展时期没有年龄的年龄没有。由于侵扰的影响，只有S. Zeamais成年人的＆ = 35 d造成巨大的伤害和损失储存谷物。除了象鼻虫血液中的血腥血液对紫薇的易感性并未受到象鼻虫的影响，除了在老年人的年龄而受到影响; = 43天。观测象鼻虫成年人在生理上的信号在生理上是最适合的。= 14 d旧的，但表明＆ = 35 d旧的成年人造成最高的粮食安全威胁。 S.Zeamais生态型研究表现出24小时评估期的拟除虫菊酯杀虫剂的抗性，并且对粮食安全也有影响。

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