Patterns of genetic connectivity among anchialine habitats: a case study of the endemic Hawaiian shrimp Halocaridina rubra on the island of Hawaii
Patterns of genetic connectivity among anchialine habitats: a case study of the endemic Hawaiian shrimp Halocaridina rubra on the island of Hawaii
复制标题
anchialine 栖息地之间的遗传连通性模式：夏威夷岛上特有的夏威夷虾 Halocaridina rubra 的案例研究
作者：
S. R. Santos
苯胺栖息地是一种内陆的混盐水体，随潮汐波动，但与海洋没有表面联系，这是世界各地都知道的。许多苯胺类生物分布广泛，据推测，高水平的基因流动和低水平的遗传分化是来自这些栖息地的种群的特征。然而，这一假设的普遍性需要进一步评估，特别是考虑到这些生境及其生物群受到人为原因的重大负面影响。利用线粒体细胞色素c氧化酶亚基I （COI）基因序列，研究了夏威夷特有的一种抗酸盐虾（Halocaridina rubra）的种群结构和人口统计学特征。一项对夏威夷岛上16个种群的305个个体的调查发现了135个单倍型。这些单倍型属于两个不同谱系之一（2.7-4.9%）；值得注意的是，在该岛的两个海岸之间没有共享的单倍型。在每条海岸线上，相隔50 - 30公里的种群之间存在着强烈的细分，几乎没有基因流动。夏威夷红唇鼩的种群结构和人口统计受到当地水文、地质、火山活动和岛上两次不同的殖民事件的影响。因此，夏威夷的红血蜱表明，在有限的地理范围内，地方苯胺生物种群可能表现出显著水平的遗传结构和有限水平的基因流动。该报告对苯胺类生物的生物学有了新的认识，并对这些栖息地及其生物群的未来管理具有重要意义。
Anchialine habitats, landlocked bodies of mixohaline water that fluctuate with the tides but have no surface connection to the sea, are known from around the world. Many anchialine organisms have widespread distributions and it has been hypothesized that high levels of gene flow and low levels of genetic differentiation are characteristic of populations from these habitats. However, the generality of this hypothesis requires further assessment, particularly in light of the significant negative impact these habitats and their biota have experienced from anthropogenic causes. This study investigated the population structure and demography of an endemic Hawaiian anchialine species, the atyid shrimp Halocaridina rubra, using mitochondrial cytochrome c oxidase subunit I (COI) gene sequences. A survey of 305 individuals from 16 populations collected on the island of Hawaii revealed 135 haplotypes. These haplotypes belonged to one of two divergent (2.7–4.9%) lineages; notably, no haplotypes were shared between the two coasts of the island. Along each coast, strong subdivision and little to no gene flow occurs between populations separated by > 30 km. The population structure and demography of H. rubra on Hawaii are influenced by regional hydrology, geology, volcanism and two distinct colonization events of the island. Thus, H. rubra on Hawaii demonstrates that populations of endemic anchialine organisms may exhibit significant levels of genetic structure and restricted levels of gene flow over limited geographic scales. This report brings novel insight into the biology of anchialine organisms and has important implications for the future management of these habitats and their biota.
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影响因子：
3.3
作者：
Alan R. Templeton;K. Crandall;C. Sing
通讯作者：
Alan R. Templeton;K. Crandall;C. Sing
影响因子：
3.3
作者：
Yunxin Fu
通讯作者：
Yunxin Fu
影响因子：
3.3
作者：
L. Excoffier;P. Smouse;J. Quattro
通讯作者：
L. Excoffier;P. Smouse;J. Quattro
将种群结构与种群历史分离：对虎蝾螈 Ambystoma tigrinum 线粒体 DNA 单倍型地理分布的分支分析。
影响因子：
3.3
作者：
Templeton,AR;Routman,E;Phillips,CA
通讯作者：
Phillips,CA