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首页> 外文期刊>Environmental toxicology and chemistry >INFLUENCE OF SELECTED ANTIBIOTICS ON THE RESPONSE OF BLACK FLY (SIMULIUM V1TTATUM) LARVAE TO INSECTICIDAL PROTEINS PRODUCED BY BACILLUS THURINGIENSIS SUBSP. ISRAELENSIS
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INFLUENCE OF SELECTED ANTIBIOTICS ON THE RESPONSE OF BLACK FLY (SIMULIUM V1TTATUM) LARVAE TO INSECTICIDAL PROTEINS PRODUCED BY BACILLUS THURINGIENSIS SUBSP. ISRAELENSIS

机译：选定的抗生素对黑粉虱（Bacillus Thuringiensis SUBSP）产生的黑蝇幼虫对杀虫蛋白反应的影响。以色列

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摘要

A controlled current toxicity test (CCTT) was developed to evaluate the response of black fly (Simulium vittatum) larvae to insecticidal proteins following exposure to various antibiotics. The bacterium, Bacillus thuringiensis subsp. israelensis (Bti), produces proteins that are toxic to Nemotoceran Diptera, such as black flies and mosquitoes, when ingested. These insecticidal crystalline proteins (ICPs) are highly efficacious in controlling black flies; however, speculation has arisen regarding the potential for antibiotic contamination of waterways to mitigate the toxicity of these proteins. A series of experiments was conducted with the CCTT in which black fly larvae were exposed to enrofloxacin, tylosin, sulfamethoxazole, and trimethoprim followed by exposure to Bti ICPs. These antibiotics were selected based on their use in agricultural and documented anthropogenic contamination of rivers. Anthropogenic concentrations of a mixture of these four antibiotics did not affect the response of the larvae to Bti ICPs. Subsequent experiments were conducted with antibiotic concentrations 10,000 to 80,000 times higher than those found in contaminated rivers. Exposure of black fly larvae to high levels of enrofloxacin (0.5 mg/L) had no effect upon the susceptibility to Bti ICPs; however, exposure to high levels of tylosin (8 mg/L) resulted in a significant increase in the susceptibility of the larvae to Bti ICPs at 72 h of exposure, but not at 48 h. Exposure of black fly larvae to high concentrations of a mixture of sulfamethoxazole and trimethoprim resulted in a significant increase in the efficacy of the larvicide after 48 and 72 h of exposure. These results suggest that impairment of the efficacy of Bti ICPs to black fly larvae is not due to antibiotic contamination of the larval environment.
机译：开发了一种可控的电流毒性试验（CCTT），以评估黑蝇（Simulium v​​ittatum）幼虫在接触各种抗生素后对杀虫蛋白的反应。细菌苏云金芽孢杆菌亚种。以色列（Bti）摄取时会产生对Nemotoceran Diptera有毒的蛋白质，例如黑蝇和蚊子。这些杀虫晶体蛋白（ICPs）在控制黑蝇方面非常有效。然而，人们已经对水道中的抗生素污染以减轻这些蛋白质的毒性的可能性进行了猜测。使用CCTT进行了一系列实验，其中将黑蝇幼虫暴露于恩诺沙星，泰乐菌素，磺胺甲恶唑和甲氧苄啶，然后暴露于Bti ICP。选择这些抗生素是基于其在农业中的使用以及有记录的人为污染河流。这四种抗生素的混合物的人为浓度不会影响幼虫对Bti ICP的反应。随后进行的实验所使用的抗生素浓度是被污染河流中抗生素浓度的10,000至80,000倍。黑蝇幼虫暴露于高浓度的恩诺沙星（0.5 mg / L）对Bti ICPs的敏感性没有影响。但是，暴露于高水平的泰乐菌素（8 mg / L）会导致幼虫在暴露72 h而不是48 h时对Bti ICPs的敏感性显着增加。将黑蝇幼虫暴露于高浓度的磺胺甲基异恶唑和甲氧苄啶混合物中后，暴露48和72小时后，杀幼虫剂的功效显着提高。这些结果表明，Bti ICP对黑蝇幼虫功效的损害不是由于幼虫环境的抗生素污染引起的。

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  • 来源
    《Environmental toxicology and chemistry》 |2010年第8期|P.1849-1853|共5页
  • 作者

    Joseph P. Iburg; rnElmer W. Gray; rnRoger D. Wyatt; rnRaymond Noblet;

  • 作者单位

    Department of Entomology, Riverbend Research Laboratory-North, The University of Georgia, 110 Riverbend Road, Athens, Georgia 30602, USA;

    rnDepartment of Entomology, Riverbend Research Laboratory-North, The University of Georgia, 110 Riverbend Road, Athens, Georgia 30602, USA;

    rnDepartment of Entomology, Riverbend Research Laboratory-North, The University of Georgia, 110 Riverbend Road, Athens, Georgia 30602, USA;

    rnDepartment of Entomology, Riverbend Research Laboratory-North, The University of Georgia, 110 Riverbend Road, Athens, Georgia 30602, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    black flies; black fly larvae; simulium vitattum; bacillus thuringiensis subsp. israelensis; antibiotics;

    机译：黑蝇黑蝇幼虫假体苏云金芽孢杆菌亚种以色列抗生素类;

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