ABSTRACT

The effect of two strawberry cultivars (029 and Wanter star) on the biology and life table parameters of the two phytoseiid mites, Amblyseius swirskii Athias-Henriot and Neoseiulus californicus (McGregor), preyed on Tetranychus urticae Koch, was evaluated in the present study. The number and length of leaf trichomes varied between the two tested cultivars; where Wanter star leaves had significantly more and longer trichomes than 029 ones. Both phytoseiid mites successfully completed their development on the two strawberry cultivars. The pre-adult duration and female longevity of both phytoseiids were shorter and longer, respectively on 029 leaves than on Wanter star leaves. Fecundity of both phytoseiids reared on 029 cultivar was significantly higher than that on the other strawberry cultivar. For the two predators, the values of the intrinsic rate of increase, the finite rate of increase and the net reproductive rate parameters were higher and the generation time (T) was shorter when the predators were reared on 029 cultivar comparing to Wanter star one. This difference in response of the two predators to the leaf surfaces of strawberry cultivars must be taken into consideration to improve the role of these predacious mites in the biological control programs in strawberry field.

摘要

两个草莓品种（029和Wanter star）对捕食叶螨科的两种植物螨类Amblyseius swirskii Athias-Henriot和Neoseiulus californicus (McGregor)生物学和生命表参数的影响Koch 在本研究中进行了评估。两个测试品种的叶毛状体数量和长度各不相同。其中，Wanter 星叶的毛状体明显多于 029 且更长。两种植物精螨都成功地在两个草莓品种上完成了发育。029叶上的两种植物精的成虫前历期和雌性寿命分别比旺特星叶短和长。029 栽培品种培育的两种植物蛋白的繁殖力均显着高于其他草莓品种。对于这两种捕食者，内在增长率、有限增长率和净繁殖率参数值较高，世代时间（T) 当捕食者在 029 品种上饲养时，与 Wanter 明星一号相比更短。必须考虑两种捕食者对草莓品种叶面的反应差异，以改善这些捕食螨在草莓田生物防治计划中的作用。