Okamoto M, Ito A, Kurosawa T, Oku Y, Kamiya M, Agatsuma T
Institute of Experimental Animal Sciences, Osaka University Medical School, Suita-shi, Japan.
Int J Parasitol. 1995 Feb;25(2):221-8. doi: 10.1016/0020-7519(94)00099-a.
The technique of isoenzyme electrophoresis was applied to Japanese wild populations of Taenia taeniaeformis (isolated from Norway rats) and three laboratory reared isolates (KRN isolated from a Malaysian Norway rat, BMM from a Belgian house mouse and ACR from a Japanese gray red-backed vole). The average heterozygosities of Japanese wild populations were fairly small and total genetic variability was 0.0499. The genetic make-up of T. taeniaeformis in Norway rats was rather uniform in the whole of Japan. In KRN isolate, each of all 10 loci examined possessed the allele which was predominant in Japanese wild populations. Similarly, each of 9 loci in BMM isolate possessed the same alleles, but one of 2 alleles at HK locus was different from that in the others. T. taeniaeformis parasitizing house mice and rats were considered to be genetically closely related to each other. In ACR isolate, 7 out of 10 loci possessed different alleles from those in the other populations. It was considered that ACR isolate was genetically distant and its phylogenetic origin in Japan should be different from worms parasitizing Norway rats.
同工酶电泳技术被应用于日本绦虫（从挪威大鼠分离得到）的野生种群以及三个实验室饲养的分离株（从马来西亚挪威大鼠分离得到的KRN、从比利时家鼠分离得到的BMM和从日本灰背田鼠分离得到的ACR）。日本野生种群的平均杂合度相当小，总遗传变异为0.0499。在整个日本，挪威大鼠体内的绦虫的遗传组成相当一致。在KRN分离株中，所检测的全部10个位点中的每一个都拥有在日本野生种群中占主导地位的等位基因。同样，BMM分离株中的9个位点中的每一个都拥有相同的等位基因，但HK位点的两个等位基因中的一个与其他等位基因不同。寄生于家鼠和大鼠的绦虫被认为在遗传上彼此密切相关。在ACR分离株中，10个位点中的7个拥有与其他种群不同的等位基因。据认为，ACR分离株在遗传上距离较远，其在日本的系统发育起源应该与寄生于挪威大鼠的绦虫不同。
