Verspoor E, O'Sullivan M, Arnold A L, Knox D, Amiro P G
FRS Marine Laboratory, Aberdeen, Scotland AB11 9DB, UK.
Heredity (Edinb). 2002 Dec;89(6):465-72. doi: 10.1038/sj.hdy.6800166.
Matrilineal phylogenetic divergence among Atlantic salmon stocks of the Bay of Fundy in south eastern Canada is investigated. Sequence variation in two regions of the mitochondrial ND1 gene, encompassing 710 base pairs, is described for 168 salmon from 11 rivers. Mean overall haplotype and nucleotide diversity (h and pi) observed are 0.5014 and 0.00095, respectively. Nested clade analysis (NCA) and molecular analysis of variance (AMOVA) both point to highly restricted gene flow among rivers and show the haplotype distribution to be geographically structured. Variation among predefined regions of the Bay (16%) is greater than among populations within these regions (14%) The main regional differentiation occurs between rivers of the geographically isolated inner Minas Basin and those elsewhere in the Bay. Differentiation most probably reflects the pattern and nature of the historical processes associated with post-glacial colonisation of the area by salmon following the last Pleistocene glacial maximum c. 180,00 yrs BP.
对加拿大东南部芬迪湾大西洋鲑鱼种群的母系系统发育分歧进行了研究。描述了来自11条河流的168条鲑鱼线粒体ND1基因两个区域的序列变异，该区域包含710个碱基对。观察到的平均总体单倍型和核苷酸多样性（h和π）分别为0.5014和0.00095。嵌套分支分析（NCA）和方差分子分析（AMOVA）均表明河流之间的基因流高度受限，并显示单倍型分布具有地理结构。海湾预定义区域之间的变异（16%）大于这些区域内种群之间的变异（14%）。主要的区域分化发生在地理上孤立的内米纳斯盆地的河流与海湾其他地方的河流之间。这种分化很可能反映了末次更新世冰期最大值约180,000年前鲑鱼对该地区进行冰后期殖民化的历史过程的模式和性质。
