Abad-Moyano Raquel, Pina Tatiana, Ferragut Francisco, Urbaneja Alberto
Unidad de Entomología, Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias (IVIA), Apartado Oficial, Carretera de Moncada a Náquera (km. 4.5), 46113 Moncada, Valencia, Spain.
Exp Appl Acarol. 2009 Feb;47(2):121-32. doi: 10.1007/s10493-008-9197-z. Epub 2008 Oct 17.
The management of Tetranychus urticae, a key pest of clementine trees, is mainly based on the use of acaricides. However, more environmentally safe measures, such as biological control, are being encouraged. Life-history traits of the three most abundant phytoseiid mites associated with T. urticae on this crop (Euseius stipulatus, Phytoseiulus persimilis and Neoseiulus californicus) were studied. The experiments were performed under laboratory conditions (25 degrees C, 80 +/- 5% RH and 16:8 h (L:D)) on clementine leaves and T. urticae as prey. Euseius stipulatus could not complete its life cycle, whereas P. persimilis and N. californicus completed it satisfactorily. The estimated intrinsic rate of increase (rm) was significantly higher for P. persimilis (0.344 day(-1)) than for N. californicus (0.244 day(-1)) and both were higher than the rm value of T. urticae on clementine leaves. Implications of these results for the biological control of T. urticae in this crop are discussed.
柑橘全爪螨是柑橘树的一种主要害虫，对其管理主要基于使用杀螨剂。然而，人们正在鼓励采取更多环境安全措施，如生物防治。研究了与该作物上的柑橘全爪螨相关的三种数量最多的植绥螨（斯氏钝绥螨、智利小植绥螨和加州新小绥螨）的生活史特征。实验在实验室条件下（25摄氏度、相对湿度80±5%、16:8小时（光照：黑暗）），以柑橘叶和柑橘全爪螨作为猎物进行。斯氏钝绥螨无法完成其生命周期，而智利小植绥螨和加州新小绥螨能令人满意地完成生命周期。智利小植绥螨的估计内禀增长率（rm）（0.344天⁻¹）显著高于加州新小绥螨（0.244天⁻¹），且两者均高于柑橘叶上柑橘全爪螨的rm值。讨论了这些结果对该作物上柑橘全爪螨生物防治的意义。
