2008年至2016年间游到冰岛的5只流浪北极熊(Ursus maritimus)的寄生虫

IF 0.2 4区农林科学 Q4 AGRICULTURE, MULTIDISCIPLINARY

Icelandic Agricultural Sciences Pub Date : 2023-01-01 DOI:10.16886/ias.2023.02

K. Skírnisson, D. Jouet

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引用次数: 0

摘要

在2008年至2016年期间，五头北极熊(Ursus maritimus)从东格陵兰岛的种群游到冰岛，在上岸后不久就被射杀了。每只熊都被解剖了。耳、毛中检出外寄生虫，胃肠道中检出蠕虫，肌肉中检出旋毛虫幼虫。在粪便样本中也发现了原生动物囊、卵囊和蠕虫卵。未检出体外寄生虫。2只熊(40%)在胃中寄生了4期鳞状缩囊线虫(B株)幼虫。特征性的疤痕，如直肠壁上的陨石坑，表明曾经有一只熊的棘头感染。三只北极熊感染了原生旋毛虫线虫。粪便样本中未检出原生动物寄生虫，但在2只熊(40%)的粪便中检出异养性囊虫。这是首次在自由生活的北极熊中发现隐泡囊菌、囊胚菌和棘头虫感染。关键词:冰岛，寄生虫，熊，北极熊，游民，新寄主记录

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Parasites of five vagrant Polar bears (Ursus maritimus) swimming to Iceland during 2008 to 2016

During 2008 to 2016, five polar bears (Ursus maritimus) swam from the East Greenland population to Iceland and were shot soon after walking ashore. Each bear was dissected. Ectoparasites were searched for in their ears and fur, helminths in the gastrointestinal tract and Trichinella larvae in muscles. Protozoan cysts, oocysts and helminth eggs were also searched for in faecal samples. No ectoparasites were detected. Two bears (40%) hosted fourth stage larvae of the nematode Contracaecum osculatum (strain B) in the stomach. Characteristic scars, noted as craters in the rectum wall, indicated previous acanthocephalan infection in one bear. Three polar bears were infected by the nematode Trichinella nativa. No protozoan parasites were detected in faecal samples, but cysts of the heterokontophyte Blastocystis sp. were found in faeces of two bears (40%). This is the first report of C. osculatum, Blastocystis sp. and an acanthocephalan infection in free-living polar bears. Keywords: Iceland, parasites, Ursus maritimus, polar bear, vagrant, new host records

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来源期刊

Icelandic Agricultural Sciences AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Icelandic Agricultural Sciences is published annually, or more frequently. The deadline for submitting manuscripts that are intended to appear within that year is September. The journal is in English and is refereed and distributed internationally. It publishes original articles and reviews written by researchers throughout the world on any aspect of applied life sciences that are relevant under boreal, alpine, arctic or subarctic conditions. Relevant subjects include e.g. any kind of environmental research, farming, breeding and diseases of plants and animals, hunting and fisheries, food science, forestry, soil conservation, ecology of managed and natural ecosystems, geothermal ecology, etc.