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- Phylogeographic Variation in Mitochondrial DNA of Formosan White-bellied Rat Niviventer culturatus
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題名 | Phylogeographic Variation in Mitochondrial DNA of Formosan White-bellied Rat Niviventer culturatus=高山白腹鼠(Niviventer culturatus)粒線體DNA之地理類緣變異 |
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作者 | 許富雄; 林飛棧; 林曜松; Hsu, Fu-hsiung; Lin, Fei-jann; Lin, Yao-sung; |
期刊 | 動物研究學刊 |
出版日期 | 20000100 |
卷期 | 39:1 2000.01[民89.01] |
頁次 | 頁38-46 |
分類號 | 389.62 |
語文 | eng |
關鍵詞 | 地理類緣關係變異; 限制內切酶; 單倍基因型; 高山白腹鼠; Phylogeographic variation; Restriction endonuclease; Haplotype; Niviventer culturatus; |
中文摘要 | 本研究利用PCR-RFLP的方法分析臺灣地區20個族群,128隻高山白腹鼠(Niviventer culturatus)的地理類緣關係變異。利用聚合[]連鎖反應(PCR)分別增幅含粒線體DNA之CYTb/DL(約2800bp)及12S/16S(約1900bp)等基因的兩個片段,再以13種限制內切[]來分析這兩個增幅的片段,總共得到25個粒線體DNA的單倍基因型(haplotype)。各單倍基因型的序列差異介於0.32%至2.63%之間,族群內粒線體DNA的分歧度估計值介於為0%至0.69%,而族群與族群之間的差異介於-0.08%至1.71%。除了少數幾個單倍基因型的族群地理分布較廣之外,大多數的單倍基因型都只發現在單一族群或相鄰近的族群內,而各單倍基因型之間並沒發現明顯的地理類緣關係組合。這結果可能是受到歷史地質事件及較高程度基因互流(geneflow)的影響。 |
英文摘要 | Phylogeographic variation in mtDNA of the Formosan white-bellied rat Niviventer culturatus (Muridae) was studied by the PCR-RFLP method, using 128 individuals from 20 locations throughout its distribution range in Taiwan. Restriction fragment polymorphisms represented by the CYTb/DL (2800 bp) and 12S/16S (1900 bp) fragments were assayed by 13 restriction endonucleases. Totally, 25 mtDNA haplotypes were observed. The sequence divergence between all pairs of haplotypes ranged between 0.32% and 2.63%. The amount of within-locality nucleotide diversity was estimated to be from 0% to 0.69%. Pairwise analysis of net nucleotide divergence between locations ranged between -0.08% and 1.71%. There was little phylogeographic patterning among the haplotypes, and most of them were found within a single location or associated with nearby locations, except for some widespread haplotypes. The results suggest that population differentiation in the Formosan white-bellied rat is minor, probably due to historical vicariance events and a high level of gene flow. |
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