美国北达科他州不断扩张的驼鹿（Alces alces）种群中接触特定病原体的情况。

Exposure to Select Pathogens in an Expanding Moose (Alces alces) Population in North Dakota, USA.

机构信息

North Dakota Game and Fish Department, 100 North Bismarck Expressway, Bismarck, North Dakota 58501, USA.

University of Tennessee Extension, 5201 Marchant Drive, Nashville, Tennessee 37211, USA.

出版信息

J Wildl Dis. 2021 Jul 1;57(3):648-651. doi: 10.7589/JWD-D-20-00150.

DOI:10.7589/JWD-D-20-00150

PMID:33857323

Abstract

Forty female moose (Alces alces) captured in North Dakota, US, in March 2014 were tested for antibodies to a variety of pathogens. Antibodies to West Nile virus (WNV) were detected in 39 (98%) moose following a year with a high number of human cases, suggesting the population accurately reflects WNV activity. Fifteen percent of moose (6/40) had antibodies to Borrelia burgdorferi, implying expansion of the tick vector into the area. Antibodies to Anaplasma spp. were detected in 55% of moose (22/40), a higher rate than previously detected in cattle from the region. Low titers (100-400) to one or more serovars of Leptospira spp. were detected in 23% of moose (9/40), a common finding in wild ruminants. Exposure to other pathogens was uncommon (<8%; <3/40) or not documented. Survival and recruitment were high during the study period, suggesting a limited population-level impact at current levels of exposure and environmental co-stressors.

摘要

2014 年 3 月，在美国北达科他州捕获的 40 头雌性驼鹿（Alces alces）接受了多种病原体的抗体检测。在一年中人类病例数量较高后，有 39 头（98%）驼鹿检测到了西尼罗河病毒（WNV）抗体，这表明该种群准确反映了 WNV 的活动情况。15%的驼鹿（6/40）有伯氏疏螺旋体（Borrelia burgdorferi）抗体，这意味着蜱虫传播媒介已经扩展到该地区。55%的驼鹿（22/40）检测到了无形体属（Anaplasma spp.）抗体，这一比例高于该地区以前从牛群中检测到的比例。23%的驼鹿（9/40）检测到了一种或多种钩端螺旋体属（Leptospira spp.）血清型的低滴度（100-400）抗体，这在野生反刍动物中很常见。其他病原体的暴露率较低（<8%；<3/40）或没有记录。在研究期间，生存率和繁殖率都很高，这表明在目前的暴露水平和环境共同压力下，对种群水平的影响有限。