...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental toxicology and chemistry >ORGANOCHLORINE PESTICIDES AND MERCURY IN COTTONMOUTHS (AGKISTRODON PISCIVORUS) FROM NORTHEASTERN TEXAS, USA
【24h】

ORGANOCHLORINE PESTICIDES AND MERCURY IN COTTONMOUTHS (AGKISTRODON PISCIVORUS) FROM NORTHEASTERN TEXAS, USA

机译：美国东北得克萨斯州棉M（AGKISTRODON PISCIVORUS）中的有机氯农药和汞

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Despite their ecological importance and global decline, snakes remain poorly studied in ecotoxicology. In this study, we examined organochlorine (OC) pesticide and mercury accumulation in cottonmouths (Agkistrodon piscivorus) living on a contaminated site in northeastern Texas (USA). Mercury and p,p′-dichlorodiphenyldichloroethylene (p,p′-DDE) were detected in all snakes examined. Other OCs, including p,p′-dichlorodiphenyltrichloroethane (p,p′-DDT), methoxychlor, aldrin, and heptachlor, also were detected, but less frequently. Concentrations of p,p′-DDE were higher in fat than in liver, while mercury concentrations were highest in liver, followed by kidney and tail clips. One animal contained the highest mercury concentration yet reported for a snake (8,610 ng/g). Mercury concentrations in liver and kidney were higher in males than females, while no intersex differences in p,p′-DDE concentrations were observed. Concentrations of p,p′-DDE in fat were correlated positively with body size in male cottonmouths but not females, suggesting a slower rate of accumulation in females. Body size strongly predicted mercury concentrations in liver, kidney, and tail clips of both sexes. Tail clips were strong predictors of mercury in liver and kidney in males but not females, suggesting possible sex-dependent differences in mercury toxicokinetics. Both long-term field studies and controlled laboratory investigations are needed to adequately assess the response of cottonmouths to chronic contaminant exposure.
机译：尽管它们具有生态重要性和全球范围的衰落，但蛇在生态毒理学方面的研究仍然很少。在这项研究中，我们研究了生活在德克萨斯州东北部（美国）受污染场地的棉口（Agkistrodon piscivorus）中有机氯（OC）农药和汞的积累。在所有检查的蛇中都检测到了汞和p，p'-二氯二苯基二氯乙烯（p，p'-DDE）。还检测到其他OC，包括对苯二甲酸p，p'-二氯二苯基三氯乙烷（p，p'-DDT），甲氧基氯，艾氏剂和七氯，但频率较低。脂肪中p，p'-DDE的浓度高于肝脏，而肝脏中的汞浓度最高，其次是肾脏和尾巴。一只动物的汞含量最高，据报道是蛇（8,610 ng / g）。男性肝脏和肾脏中的汞浓度高于女性，而在雌雄同体的p，p'-DDE浓度中未见差异。男性棉口中脂肪中p，p'-DDE的浓度与体型呈正相关，而女性则不然，这表明女性体内的蓄积速率较慢。身体大小强烈预测了男女肝脏，肾脏和尾巴夹中的汞含量。尾夹是男性而非女性肝脏和肾脏中汞含量的强力预测指标，表明汞毒物动力学可能与性别有关。为了充分评估棉口对慢性污染物暴露的反应，需要长期的现场研究和受控的实验室研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号