Genetic variability in European Leptestheria dahalacensis (Rüppel, 1837) (Crustacea, Branchiopoda, Spinicaudata)
Genetic variability in European Leptestheria dahalacensis (Rüppel, 1837) (Crustacea, Branchiopoda, Spinicaudata)
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欧洲 Leptestheria dahalacensis 的遗传变异性 (Rüppel, 1837)（甲壳纲、鳃足纲、棘尾纲）
DOI：
10.1007/s10750-007-0645-2
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发表时间：
2007
期刊：
影响因子：
2.6
通讯作者：
B. Mantovani
中科院分区：
文献类型：
--
作者：
M. Cesari;A. Luchetti;F. Scanabissi;B. Mantovani
通过对8个意大利种群和2个中欧种群的线粒体和核(微卫星)标记的分析，研究了达哈拉克型细毛虫(Rüppel，1837)的遗传变异。线粒体数据表现出较低的变异性，因为只有六种有丝分裂类型被评分：五种在意大利，一种在两个中欧样本中，替换数量非常少。所有分析的微卫星座位都是可变的，每个座位有3-5个等位基因，每个群体有1-4个等位基因。所有群体均处于Hardy-Weinberg平衡状态，但LDAC-16基因座的2个样本和LDAC-11基因座的4个群体例外，这可能与零等位基因的存在有关。在中欧和意大利样本之间发现了大量的群体结构，这两个标记都使用了。这种观察可以用距离隔离和/或最近的隔离事件来解释。另一方面，意大利样本比较中没有明显的池塘间变异性，这可能归因于短距离内的高扩散能力。
The genetic variability of the gonochoricLeptestheria dahalacensis(Rüppel, 1837) was studied through the analysis of mitochondrial and nuclear (microsatellite loci) markers in eight Italian and two Central European populations. Mitochondrial data exhibited a low variability, as only six mitotypes were scored: five in Italy and one for both Central European samples, with a very low number of substitutions. All analysed microsatellite loci were variable, with 3–5 alleles per locus and 1–4 alleles per population. All populations were at the Hardy–Weinberg equilibrium, with the exceptions of two samples for locus ldAC-16, due to heterozygote excess, and of four populations for locus ldAC-11, probably linked to the presence of null alleles. A substantial population structuring was found between Central European and Italian samples for both utilized markers. This observation may be explained by isolation by distance and/or recent isolation events. On the other hand, the absence of a clear inter-pond variability in Italian sample comparisons may be ascribed to high dispersal ability in the short range.