海洋觅食的海狸鼠（Lontra canadensis）种群的死亡率原因。

Causes of Mortality in a Population of Marine-Foraging River Otters (Lontra canadensis).

机构信息

The SeaDoc Society, University of California at Davis Karen C. Drayer Wildlife Health Center-Orcas Island Office, 942 Deer Harbor Rd., Eastsound, Washington 98245, USA.

Zoological Pathology Program, University of Illinois, 3300 Golf Rd., Brookfield, Illinois 60513, USA.

出版信息

J Wildl Dis. 2020 Oct 1;56(4):941-946. doi: 10.7589/JWD-D-20-00031.

DOI:10.7589/JWD-D-20-00031

PMID:33600599

Abstract

Retrospective analysis of diagnostic findings from 30 marine-foraging river otter (Lontra canadensis) carcasses opportunistically acquired between 2003 and 2013 revealed trauma as the most common cause of mortality (47%). Within this focal population, causes of trauma included vehicular, gunshot, and one case of suspect intraspecific aggression. Other causes of death included idiopathic (20%), infectious (13%), metabolic (10%), nutritional (7%), and neoplasia (3%). One case of neoplasia, a pancreatic islet cell adenoma, was identified in a 12-yr-old female. In six animals, diffuse renal interstitial fibrosis and multifocal glomerulosclerosis of unknown clinical significance were noted.

摘要

对 2003 年至 2013 年间偶然获得的 30 具海洋觅食海獭（Lontra canadensis）尸体的诊断结果进行回顾性分析显示，创伤是最常见的死亡原因（47%）。在这个重点人群中，创伤的原因包括车辆、枪击和一起疑似种内攻击事件。其他死亡原因包括特发性（20%）、感染性（13%）、代谢性（10%）、营养性（7%）和肿瘤性（3%）。在一只 12 岁的雌性个体中发现了一例肿瘤，为胰岛细胞瘤腺瘤。在 6 只动物中，发现弥漫性肾间质纤维化和多灶性肾小球硬化，但无临床意义。