Kinyanjui G, Khamis F M, Ombura F L O, Kenya E U, Ekesi S, Mohamed S A
International Centre of Insect Physiology and Ecology (icipe), P. O. Box 30772-00100, Nairobi, Kenya.
Department of Biological Sciences, University of Embu, P.O. Box 6-60100, Embu, Kenya.
Bull Entomol Res. 2021 Dec;111(6):658-673. doi: 10.1017/S0007485321000304. Epub 2021 May 17.
(Meyrick) has become a serious menace to sustainable production of tomato in Kenya. A survey was conducted between April 2015 and June 2016 to determine its distribution, abundance, infestation, and damage levels on tomato, and associated natural enemies. Trap counts of moths were recorded in all surveyed 29 counties, which indicated its nationwide distribution irrespective of altitude. was present in both open fields and greenhouses. The highest moth/trap/day was 115.38 ± 15.90. Highest leaf infestation was 92.22% and the highest number of mines and larvae per leaf were 3.71 ± 0.28 and 2.16 ± 0.45, respectively. Trap captures in terms of moth/trap/day were linearly and positively related to leaf infestations in open fields ( = 0.81) and greenhouses ( = 0.61). Highest fruits' infestation and damage were 60.00 and 59.61%, respectively, while the highest number of mines per fruit was 7.50 ± 0.50. (Reuter) and (Rambur) were identified as predators of larvae. Nine species of larval parasitoids were recovered from infested foliage, with a combined parasitism of 7.26 ± 0.65%. species was the most dominant (31.25%) and accounted for 12.88 ± 1.47% parasitism. Two species of larval parasitoids, and were obtained from sentinel plants with an average parasitism of 1.13 ± 0.25. The overall abundance and parasitism rates of recovered natural enemies were low to effectively control the field populations of . These findings form the basis of researching and developing effective and sustainable management strategies for the pest.
（梅里克氏潜叶蛾）已成为肯尼亚番茄可持续生产的严重威胁。2015年4月至2016年6月进行了一项调查，以确定其在番茄上的分布、数量、侵染情况、危害程度以及相关天敌。在所有调查的29个县都记录了诱捕到的蛾类数量，这表明其在全国范围内分布，不受海拔影响。在露天田地和温室中均有发现。最高的蛾/诱捕器/天数量为115.38±15.90。最高的叶片侵染率为92.22%，每片叶上的虫道和幼虫数量最高分别为3.71±0.28和2.16±0.45。就蛾/诱捕器/天而言，露天田地（=0.81）和温室（=0.61）中的诱捕捕获量与叶片侵染呈线性正相关。果实的最高侵染率和损害率分别为60.00%和59.61%，而每个果实上的虫道最高数量为7.50±0.50。（路透氏）和（兰布尔氏）被确定为梅里克氏潜叶蛾幼虫的捕食者。从受侵染的叶片中发现了9种幼虫寄生蜂，总寄生率为7.26±0.65%。某物种最为占主导地位（31.25%），占寄生率的12.88±1.47%。从哨兵植物中获得了两种幼虫寄生蜂，平均寄生率为1.13±0.25。所发现的天敌的总体数量和寄生率较低，无法有效控制梅里克氏潜叶蛾的田间种群数量。这些发现为研究和制定针对该害虫的有效且可持续的管理策略奠定了基础。
