Seegers G, Baumeister S, Kuschfeldt S, Pohlmeyer K, Stoye M
Institut für Parasitologie und dem Institut für Wildtierforschung, Tierärztliche Hochschule Hannover.
Dtsch Tierarztl Wochenschr. 1997 Dec;104(12):503-4.
From January 1995 to December 1995, 991 muskrats were examined for the occurrence and the regional prevalence of nematodes and trematodes. The muskrats were trapped in all parts of Lower Saxony. 77.2% of the studied population were less than one year old, 22.8% were older. The male to female ratio was 54.5% to 45.5%. One genus of nematodes, Trichuris spp., was found in the colon in 1.9% of the animals in the south of the investigated area. A species differentiation was not possible, as exclusively female parasites had been found. Additionally, two genera of trematodes (Echinostoma spp. and Quinqueserialis quinqueserialis) belonging to two different families were detected in 2.5% of the muskrats. In the north of the investigated area the prevalence was significantly higher than in the south. As to the echinostomatides, no species-differentiation was made because, according to KANEV (1985), many echinostomatides have not been described correctly in the past. Some echinostomatides cannot be differentiated until today. There was no statistically significant correlation between parasite infections and sex of the animals. Concerning Echinostoma spp. and Quinqueserialis quinqueserialis, a highly significant correlation was found between the age of the muskrats and the trematode-infections. Young animals were infected more often than older animals, none of the younger animals was infected with Trichuris spp.
1995年1月至1995年12月，对991只麝鼠进行了线虫和吸虫的发生情况及区域流行率检查。这些麝鼠是在下萨克森州各地捕获的。研究群体中77.2%的麝鼠年龄小于1岁，22.8%的麝鼠年龄较大。雌雄比例为54.5%比45.5%。在调查区域南部，1.9%的动物结肠中发现了一种线虫属，即毛首线虫属（Trichuris spp.）。由于只发现了雌性寄生虫，无法进行物种区分。此外，在2.5%的麝鼠中检测到属于两个不同科的两种吸虫（棘口吸虫属（Echinostoma spp.）和五口吸虫（Quinqueserialis quinqueserialis））。在调查区域北部，流行率明显高于南部。对于棘口吸虫，未进行物种区分，因为根据卡内夫（1985年）的说法，过去许多棘口吸虫没有得到正确描述。直到今天，一些棘口吸虫仍无法区分。寄生虫感染与动物性别之间没有统计学上的显著相关性。关于棘口吸虫属和五口吸虫，发现麝鼠年龄与吸虫感染之间存在高度显著的相关性。幼龄动物比老龄动物更容易感染，没有一只幼龄动物感染毛首线虫属。
