Sato M E, Raga A, Cerávolo L C, De Souza Filho M F, Rossi A C, De Moraes G J
Instituto Biológico, CP 70, 13001-970, Campinas, SP, Brazil. mesato@biologico,br
Exp Appl Acarol. 2001;25(10-11):809-18. doi: 10.1023/a:1020483515516.
The study was carried out to evaluate the effect of some insecticides and fungicides on the interaction between predacious mites of the families Phytoseiidae and Stigmaeidae on citrus. Euseius citrifolius Denmark and Muma, Euseius concordis (Chant) (Phytoseiidae), and Agistemus aff. bakeri (Stigmaeidae) were the most abundant species of predacious mites. No significant reduction of the population of stigmaeids was detected following the pesticide treatment. On the contrary, the population of those mites increased after the application of methidathion, petroleum oil, deltamethrin, cupric oxychloride and cuprous oxide, as compared to the population of those mites in the control plots. The chemicals promoting increased stigmaeid populations are some of those that promoted reduction of phytoseiid populations. A significant negative correlation was found between the numbers of phytoseiids and stigmaeids on citrus leaves immediately before treatments, and 33, 50, 83 and 105 days after treatment. A clear negative linear correlation between the number of predacious mites from both families was detected for benomyl, cupric oxychloride, cuprous oxide, thiophanate methyl, and control. Phytoseiid-stigmaeid interaction on citrus orchard is discussed.
开展该研究是为了评估某些杀虫剂和杀菌剂对柑橘上植绥螨科和长须螨科捕食螨之间相互作用的影响。柠檬真绥螨丹麦和穆马、康氏真绥螨（钱特）（植绥螨科）以及近贝氏长须螨（长须螨科）是捕食螨中数量最多的种类。在进行农药处理后，未检测到长须螨数量有显著减少。相反，与对照地块中这些螨的数量相比，在施用杀扑磷、石油乳剂、溴氰菊酯、氢氧化铜和氧化亚铜后，这些螨的数量增加了。促进长须螨数量增加的化学物质正是那些促使植绥螨数量减少的物质。在处理前以及处理后33、50、83和105天，柑橘叶片上植绥螨和长须螨的数量之间存在显著的负相关。对于苯菌灵、氢氧化铜、氧化亚铜、甲基托布津和对照，检测到来自这两个科的捕食螨数量之间存在明显的负线性相关。文中讨论了柑橘园中的植绥螨 - 长须螨相互作用。
