塔巴斯科州数十只海牛Trichusmanatus的死亡,墨西哥,引起了国际关注。对可能原因的猜测包括金属污染的水和食物。尽管联邦当局已经排除了水化学污染,这些死亡的原因仍在等待最终的实验室结果。目前的工作旨在总结目前可获得的有关非必需金属和Sirenia(儒艮和海牛)毒理学相关性的信息,突出它的身体分布,存在于血液中,及其与地理分布的关系,性别和年龄,只要有可能。本文着重论述了五个要素:作为,Cr,Hg,Pb和Cd,通常被认为是对海洋哺乳动物的威胁,并在Sirenia报道。其中一些金属(Cr和Cd)被认为与塔巴斯科州最近的死亡有关。所有五个元素都是由Sirenia在不同级别积累的。金属的存在与他们的饮食有关,但并不一定意味着对儒艮和海牛的不利影响。讨论了某些文化中任何非法或传统消费的毒理学方面和人类消费风险。强调了需要解决的重要毒理学研究领域。
The death of dozens of manatees Trichechus manatus recently in Tabasco, Mexico, has captured international attention. Speculation about possible causes include water and food contamination by metals. Although federal authorities have ruled out water chemical pollution, the cause of these deaths is still awaiting conclusive laboratory results. Present work seeks to summarize information currently available on non-essential metals and those of great toxicological relevance in
Sirenia (dugongs and manatees), highlighting its body distribution, presence in blood, and its relationship with their geographical distribution, gender and age, whenever possible. This paper focuses on the five elements: As, Cr, Hg, Pb and Cd, which are commonly considered as threats for marine mammals and reported in
Sirenia. Some of these metals (Cr and Cd) were thought to be related to the recent deaths in Tabasco. All five elements are accumulated by
Sirenia at different levels. Metal presence is associated to their diet but does not necessarily imply adverse effects for dugongs and manatees. Toxicological aspects and the human consumption risk in case of any illegal or traditional consumption in some cultures are discussed. Important toxicological research areas that need to be addressed are highlighted.