UNUSUAL POPULATION-GENETICS OF A PARASITIC NEMATODE - MTDNA VARIATION WITHIN AND AMONG POPULATIONS
UNUSUAL POPULATION-GENETICS OF A PARASITIC NEMATODE - MTDNA VARIATION WITHIN AND AMONG POPULATIONS
复制标题
DOI：
10.2307/2409865
复制
发表时间：
1992-04-01
期刊：
影响因子：
3.3
通讯作者：
COURTNEY, CH
中科院分区：
文献类型：
--
作者：
BLOUIN, MS;DAME, JB;COURTNEY, CH
关于寄生蠕虫种群内和种群间遗传变异的分布情况知之甚少。本研究利用线粒体DNA限制性片段分析技术对美国牛寄生虫奥斯特线虫的种群遗传结构进行了分析。种群内mtDNA多样性的估计值是其他类群物种的典型估计值的5至10倍。虽然种群的遗传分化的一个关键的生活史性状，超过98%的总遗传多样性是在种群内分配，和个别mtDNA单倍型的地理分布表明高基因流之间的人口。
Very little is known about the distribution of genetic variance within and among pop-ulations of parasitic helminths. In this study we used mitochondrial DNA (MtDNA) restriction fragment analysis to describe the Population genetic structure of Osteragia ostertagi, parasite of cattle, in the United States. Estimates of within-population mtDNA diversity are 5 to 10 times greater than typical estimates reported for species in other taxa. Although populations are genetically differentiated for a key life-history trait, greater than 98% of the total genetic diversity is partitioned within populations, and the geographic distribution of individual mtDNA haplotypes suggests high gene flow among populations.