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Bio‐ecology of false codling moth, Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) within citrus orchards in Kenya and Tanzania
Agricultural and Forest Entomology ( IF 1.6 ) Pub Date : 2020-07-27 , DOI: 10.1111/afe.12398
Abdullah M. Mkiga 1, 2 , Samira A. Mohamed 1 , Hannalene du Plessis 2 , Fathiya M. Khamis 1 , Sunday Ekesi 1
Affiliation  

False codling moth, Thaumatotibia leucotreta is among the key constraints of the agricultural industry. Little is known about the population dynamics and genetic diversity of this pest in East Africa. The spatial–temporal population dynamics and genetic diversity of false codling moth were evaluated in citrus orchards in Kenya and Tanzania between May 2017 and August 2018 covering two fruiting seasons. The diversity of false codling moth sampled in these orchards and from solanaceous hosts, as well as from specimens received from Uganda, Sudan, and South Africa were assayed using the mitochondrial cytochrome oxidase I gene. A similar spatial–temporal pattern of false codling moth was found in both Kenya and Tanzania, with the most male moths in August 2017 and 2018. In Tanzania, the number of male moths caught at high and mid altitudes did not differ but were significantly higher than those caught at low altitude. A relatively low false codling moth genetic diversity was recorded at the sites where sampling was done in the respective countries as well as between specimens sampled from different host plants. The low false codling moth genetic diversity determined in this trial can be exploited in the management of the pest in the studied countries.

中文翻译:

肯尼亚和坦桑尼亚柑橘园内假苹果蠹蛾(Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae))的生物生态学

假苹果蠹蛾 Thaumatotibia leucotreta 是农业产业的主要制约因素之一。人们对东非这种害虫的种群动态和遗传多样性知之甚少。2017 年 5 月至 2018 年 8 月期间,在肯尼亚和坦桑尼亚的柑橘园评估了假苹果蠹蛾的时空种群动态和遗传多样性,涵盖了两个结果季节。使用线粒体细胞色素氧化酶 I 基因分析了在这些果园和茄科寄主以及来自乌干达、苏丹和南非的标本中取样的假苹果蠹蛾的多样性。在肯尼亚和坦桑尼亚都发现了类似的假苹果蠹蛾的时空模式,其中雄性飞蛾最多的是 2017 年 8 月和 2018 年。在坦桑尼亚,在高海拔和中海拔捕获的雄蛾数量没有差异,但明显高于在低海拔捕获的数量。在各自国家进行采样的地点以及从不同寄主植物采样的样本之间记录了相对较低的假苹果蠹蛾遗传多样性。在该试验中确定的低假苹果蠹蛾遗传多样性可用于研究国家的害虫管理。
更新日期:2020-07-27
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