Division of Marine Biology and Fisheries, Rosenstiel School for Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149-1098, USA.
J Fish Biol. 2009 Feb;74(2):403-17. doi: 10.1111/j.1095-8649.2008.02078.x.
Genetic population structure throughout the Caribbean Basin for one of the most common and widespread reef fish species, the bicolour damselfish Stegastes partitus was examined using microsatellite DNA markers. Spatial autocorrelation analysis showed a significant positive correlation between genetic and geographic distance (isolation by distance) over distances <1000 km, suggesting that populations are connected genetically but probably not demographically, i.e. over shorter time scales. A difference in spatial patterns of populations in the eastern v. the western Caribbean also raises the probability of an important role for meso-scale oceanographic features and landscape complexity within the same species. A comparison of S. partitus population structure and life-history traits with those of two other species of Caribbean reef fish studied earlier showed the findings to be concordant with a common hypothesis that shorter pelagic larval dispersal periods are associated with smaller larval dispersal scales.
利用微卫星 DNA 标记，对加勒比海盆地最常见和分布最广的珊瑚礁鱼类之一——双色雀鲷 Stegastes partitus 的遗传种群结构进行了研究。空间自相关分析显示，在<1000 公里的距离内，遗传距离和地理距离之间存在显著的正相关（距离隔离），这表明种群在遗传上是相连的，但可能不是在人口统计学上，即在较短的时间尺度上。东加勒比海和西加勒比海的种群空间模式的差异也增加了中尺度海洋特征和同一物种内景观复杂性的重要作用的可能性。与早些时候研究的两种其他加勒比珊瑚礁鱼类的 S. partitus 种群结构和生活史特征进行比较的结果表明，这些发现与一个共同的假设一致，即较短的浮游幼体扩散期与较小的幼体扩散尺度有关。
