Sorensen Mary A, Parker David R, Trumble John T
Department of Entomology, University of California, Riverside, CA 92521, USA.
Environ Pollut. 2009 Feb;157(2):384-91. doi: 10.1016/j.envpol.2008.10.001. Epub 2008 Nov 12.
Hydroponic greenhouse studies were used to investigate the effect of four anthropogenic pollutants (perchlorate (ClO4(-)), selenium (Se), manganese (Mn), and hexavalent chromium (Cr (VI))) on the biological control agent Diorhabda elongata Brullé. Contaminant concentrations were quantified for experimental Tamarix ramosissima Ledab. plants and D. elongata beetles. Growth of larvae was significantly reduced by Se contamination, but was not affected by the presence of perchlorate, Mn, or Cr (VI). All of the contaminants were transferred from plants to D. elongata beetles. Only Cr (VI) was accumulated at greater levels in beetles than in their food. Because T. ramosissima grows in disturbed areas, acquires salts readily, and utilizes groundwater, this plant is likely to accumulate anthropogenic pollutants in contaminated areas. This study is one of the first to investigate the potential of an anthropogenic pollutant to influence a weed biological control system.
采用水培温室研究来调查四种人为污染物（高氯酸盐（ClO4(-)）、硒（Se）、锰（Mn）和六价铬（Cr(VI)））对生物防治剂长戟大兜虫（Diorhabda elongata Brullé）的影响。对实验用的多枝柽柳（Tamarix ramosissima Ledab.）植物和长戟大兜虫体内的污染物浓度进行了量化。硒污染显著降低了幼虫的生长，但高氯酸盐、锰或六价铬的存在对其没有影响。所有污染物都从植物转移到了长戟大兜虫体内。只有六价铬在甲虫体内的积累水平高于其食物中的积累水平。由于多枝柽柳生长在受干扰地区，容易获取盐分并利用地下水，这种植物很可能在污染地区积累人为污染物。本研究是最早调查人为污染物影响杂草生物防治系统潜力的研究之一。
