...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >Metals and organochlorine pesticides in caudal scutes of crocodiles from Belize and Costa Rica
【24h】

Metals and organochlorine pesticides in caudal scutes of crocodiles from Belize and Costa Rica

机译：伯利兹和哥斯达黎加鳄鱼尾鳍中的金属和有机氯农药

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 high animal diversity in the Neotropics and the largely unregulated use and disposal of pesticides and industrial chemicals in Central America, few data exist regarding accumulation of environmental contaminants in Central American wildlife. In this study we examined accumulation of metals and organochlorine (OC) pesticides in caudal scutes of crocodiles from Belize and Costa Rica. Scutes from Morelet's crocodiles (Crocodylus moreletii) from two sites in northern Belize were analyzed for metals, and scutes from American crocodiles (C. acutus) from one site in Costa Rica were analyzed for metals and OC pesticides. All scutes (n=25; one scute from each of 25 individuals) contained multiple contaminants. Mercury was the predominant metal detected, occurring in all scutes examined from both species. Other metals detected include cadmium, copper, lead, and zinc. American crocodile scutes from Costa Rica contained multiple OC pesticides, including endrin, methoxychlor, p,p'-DDE, and p,p'-DDT, all of which occurred in 100% of scutes analyzed (n=6). Mean metal and OC concentrations varied in relation to those previously reported in crocodilian scutes from other localities in North, Central, and South America. OC concentrations in American crocodile scutes were generally higher than those previously reported for other Costa Rican wildlife. Currently, caudal scutes may serve as general, non-lethal indicators of contaminant accumulation in crocodilians and their areas of occurrence. However, a better understanding of the relationships between pollutant concentrations in scutes, internal tissues, and environmental matrices at sample collection sites are needed to improve the utility of scutes in future ecotoxicological investigations. (c) 2006 Elsevier B.V All rights reserved.
机译：尽管新热带地区动物的多样性很高，中美洲农药和工业化学品的使用和处置基本上不受管制，但关于中美洲野生生物中环境污染物积累的数据很少。在这项研究中，我们研究了伯利兹和哥斯达黎加鳄鱼尾鳍中金属和有机氯（OC）农药的积累。分析了来自伯利兹北部两个地点的莫雷莱特鳄鱼（Crocodylus moreletii）的铲子中的金属，分析了来自哥斯达黎加一个地点的美洲鳄鱼（C. acutus）的铲子中的金属和OC农药。所有的铲子（n = 25；每25个人有一个铲子）含有多种污染物。汞是检测到的主要金属，存在于两种物种的所有侦查中。检测到的其他金属包括镉，铜，铅和锌。来自哥斯达黎加的美国鳄鱼瓢虫含有多种OC农药，包括异狄氏剂，甲氧基氯，p，p'-DDE和p，p'-DDT，所有这些农药发生在100％的被分析的瓢虫中（n = 6）。相对于先前在北美，中美洲和南美洲其他地区的鳄鱼皮瓢虫中报告的平均金属和OC浓度，这些浓度有所不同。美国鳄鱼纹中的OC浓度通常高于先前报道的其他哥斯达黎加野生动植物中的OC浓度。目前，尾sc可能是鳄鱼及其发生区域中污染物积累的一般，非致命指示剂。但是，需要更好地了解样本收集地点的水槽，内部组织和环境基质中污染物浓度之间的关系，以提高水槽在未来生态毒理学研究中的效用。 （c）2006 Elsevier B.V保留所有权利。

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