多元素浓度(P,S,Cl,K,Ca,Cr,Mn,Fe,Ni,Cu,Zn,Rb,和Rh)和总汞(T-Hg)在亚马逊海牛(Trichechusinunguis)的不同器官和组织中进行了分析。27个伊恩古虫标本的样本,保存在亚马逊水生哺乳动物研究和保护中心的收藏中,被使用,位于巴西亚马逊北部地区受金矿开采影响很大的地区。还分析了动物用作食物的水生植物样品。元素S,Cl,K,Cr,锰主要积累在肌肉组织中,而Fe和Cu在肝脏中更集中。微量元素,如铷(Rb)和铑(Rh),以前在毛虫科动物的器官中没有报道过,也被确认了。皮肤中T-Hg的平均值,肌肉,脑,肝脏,肾,肺样本是,分别,0.1540±0.1332、0.0593±0.1044、0.0517±0.0467、0.0486±0.0543、0.0237±0.0336和0.0013±0.0032µg。g-1.vibrisae样品获得的值低于定量限,这可以得出结论,该组织不能用作污染标记。据观察,即使被保存在保护性繁殖场所,这些动物暴露于非必需的微量元素。在分析的不同器官和组织之间观察到元素积累的差异。生活在保存中心的动物体内存在污染物,即使在低水平,值得关注。
Multielement concentrations (P, S, Cl, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Rb, and Rh) and total mercury (T-Hg) were analyzed in different organs and tissues of Amazonian manatee (Trichechus inunguis). Samples of 27 T. inunguis specimens, maintained in the collection of the Amazonian Center for the Research and Preservation of Aquatic Mammals, were used, situated in an area highly impacted by gold mining in the northern region of the Brazilian Amazon. Samples of aquatic plants used as food by the animals were also analyzed. The elements S, Cl, K, Cr, and Mn accumulated mainly in the musculature, while Fe and Cu were more concentrated in the liver. Trace elements, such as rubidium (Rb) and rhodium (Rh), not previously reported in the organs of animals of the family Trichechidae, were also identified. The averages for T-Hg in the skin, muscle, encephalon, liver, kidney, and lung samples were, respectively, 0.1540 ± 0.1332, 0.0593 ± 0.1044, 0.0517 ± 0.0467, 0.0486 ± 0.0543, 0.0237 ± 0.0336, and 0.0013 ± 0.0032 µg.g-1. The values obtained for the vibrissae samples were below the limit of quantification, which allows for the conclusion that this tissue cannot be used as a contamination marker. It was observed that even when kept in a conservation breeding site, these animals were exposed to non-essential trace elements. Differences in the accumulation of elements were observed between the different organs and tissues analyzed. The presence of contaminants in animals that live in a preservation center, even at low levels, deserves attention.