Strong founder effect in Drosophila pseudoobscura colonizing New Zealand from North America.
Strong founder effect in Drosophila pseudoobscura colonizing New Zealand from North America.
复制标题
果蝇从北美殖民新西兰的强烈创始人效应。
DOI：
10.1093/jhered/93.6.415
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Noor,MAF
中科院分区：
文献类型：
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作者：
Reiland,J;Hodge,S;Noor,MAF
The North American native speciesDrosophila pseudoobscurawas first identified in New Zealand in the last few decades. Here, we have studied the genetic consequences of its spread across the Pacific Ocean. Using 10 microsatellites that are highly variable in North American populations, we found that the New Zealand population has substantially fewer alleles, a much lower average heterozygosity, and significantly different allele frequencies at these loci. We have discussed the relative sensitivity of these parameters for detecting the founding event. X-linked loci were more strongly differentiated between continents than autosomal loci, as reflected by larger changes in allele frequencies and greater reductions in numbers of alleles and average heterozygosity. The severity of the genetic diversity loss supports a scenario of a fewD. pseudoobscurafemales being introduced to New Zealand from North America.
