Effects of pollutant accumulation by the invasive weed saltcedar (Tamarix ramosissima) on the biological control agent Diorhabda elongata (Coleoptera: Chrysomelidae)

被引：11

作者：

Sorensen, Mary A. ^{[1
]}

Parker, David R. ^{[2
]}

Trumble, John T. ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Entomol, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA

来源：

ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 02期

关键词：

Hyperaccumulator; Elemental defense; Heavy metal; Invasive species; Tamarisk; WESTERN UNITED-STATES; CHROMIUM CONTAMINATION; HEXAVALENT CHROMIUM; MEGASELIA-SCALARIS; SALT-GLANDS; SELENIUM; PERCHLORATE; DIPTERA; MANGANESE; SURVIVAL;

D O I：

10.1016/j.envpol.2008.10.001

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 Brulle. 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. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：384 / 391

页数：8

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