一只港海豹（理查兹港海豹，Phoca vitulina richardsi）因吞食铅制渔坠而导致急性铅中毒。

Acute lead toxicosis in a harbor seal (Phoca vitulina richardsi) consequent to ingestion of a lead fishing sinker.

作者信息

Zabka Tanja S, Haulena Martin, Puschner Birgit, Gulland Frances M D, Conrad Patricia A, Lowenstine L J

机构信息

Anatomic Pathology Service, Veterinary Medical Teaching Hospital, University of California, Davis, California 95616, USA.

出版信息

J Wildl Dis. 2006 Jul;42(3):651-7. doi: 10.7589/0090-3558-42.3.651.

DOI:10.7589/0090-3558-42.3.651

PMID:17092897

Abstract

An adult female harbor seal (Phoca vitulina richardsi) stranded in northern California on 25 June 2004, exhibited progressive weakness, disorientation, and seizures, and despite therapy, died within 4 days. On pathologic examination, a lead fishing sinker was in the stomach, and changes in the brain, heart, kidney, liver, lymph nodes, and spleen were supportive of acute lead toxicosis. The diagnosis was made on the basis of concentrations of lead in the sinker (90-98% lead), antemortem whole blood (0.66 ppm), and postmortem tissues (84 ppm, wet weight liver). This first documented case of lead toxicosis in a wild marine mammal demonstrates an additional way in which human fishing activities can harm marine mammals.

摘要

2004年6月25日，一头成年雌性港海豹（Phoca vitulina richardsi）在加利福尼亚州北部搁浅，出现进行性虚弱、定向障碍和癫痫发作，尽管接受了治疗，但仍在4天内死亡。病理检查发现胃内有一个铅质渔坠，大脑、心脏、肾脏、肝脏、淋巴结和脾脏的变化支持急性铅中毒。诊断依据是渔坠中的铅含量（90 - 98%铅）、生前全血中的铅含量（0.66 ppm）以及死后组织中的铅含量（肝脏湿重84 ppm）。这是首例记录在案的野生海洋哺乳动物铅中毒病例，表明人类捕鱼活动可能危害海洋哺乳动物的另一种方式。