中国东北地区红背鼠平肠道寄生虫优势物种

Dominant Species of Intestinal Parasite in Red-backed Vole in Northeast China

采用Henttonen对欧洲北部变色旅鼠和欧岸鼠平及其体内寄生虫协同进化的方法对中国东北地区的吉林上马厂林场、红石林业局、黄泥河林业局及黑龙江省凉水自然保护区的红背鼠平肠道寄生虫进行了研究,并发现了4种肠道内寄生的线虫:隐藏管状线虫(Syphacia obvelata)、四翼无刺线虫(Aspicularis tetraptera)、鼠短膜壳绦虫(Mymenolepis nana)以及1种未定名的蠕虫。从感染强度上看,四翼无刺线虫对红背鼠平感染率最高。其中,2只仅感染隐藏管状线虫,1只仅感染四翼无刺线虫。同时感染2种以上寄生虫的为绝大多数,占92.7%;其中,同时感染2种寄生虫(隐藏管状属线虫、四翼无刺线虫)有31只,占75.6%;同时感染3种寄生虫的有5只,占12.2%;同时感染4种寄生虫的只有2只,占4.8%。研究实验表明,四翼无刺线虫和隐藏管状线虫是红背鼠平肠道中的优势寄生种。

A study was conducted to investigate helminth in the intestine of red-backed vole（Clethrionomys rutilus）in Shangmachang Forest Farm,Hongshi Forestry Bureau,Huangnihe Forestry Bureau of Jilin Province and Liangshui Nature Reserve of Heilongjiang Province,based on some study on the co-evolution of arvicoline rodents and their parasite in Europe.Three species of helminthes,Syphacia obvelata,Aspiculuris tetraptera,Hymenolepis nana,and one species indeterminate were found.The infection intensity of A.tetraptera was highest.For all the red-backed voles,two voles were infected by S.obvelata,only one by A.tetraptera,while most voles were infected by more than two species of parasites,accounting for 92.7%.There were 31 red-backed voles infected by S.obvelata and A.tetraptera,taking up 75.6%;five voles infected by S.obvelata,A.tetraptera and H.nana,occupying 12.2%;only two voles infected by all the four species of parasites.Results show that A.tetraptera and S.obvelata are the dominant intestinal parasitic species in red-backed voles.