台灣環頸雉型態變異與遺傳多樣性之研究

Morphological Variation and Genetic Diversity of Taiwan Ring-necked Pheasant Phasianus colchicus formosanus

陳美惠(Mei-hui Chen)

指導教授 ： 袁孝維

國立臺灣大學/生物資源暨農學院/森林學研究所/博士(2004年)

https://doi.org/10.6342/NTU.2004.01780

摘要

本論文探討台灣地區本土與外來亞種環頸雉型態特徵及粒線體DNA控制區基因型之差異，以及本島各族群遺傳多樣性和遺傳結構，俾提供台灣環頸雉個體鑑識與族群保育之參考依據。研究共分三個部分，第一部分利用形質測量分析探討本土與外來亞種的鑑識問題，第二部分則討論台灣島內各環頸雉族群的型態差異，第三部分以粒線體控制區的DNA序列探討本土與外來亞種基因型，各族群之遺傳多樣性，以及族群間遺傳分化和基因交流等遺傳訊息。研究結果顯示，以主成份分析及正典鑑別分析可以有效區分本土與外來亞種環頸雉之差異形質，同時也可以比較出台灣西部與東部族群的型態特徵。在遺傳多樣性研究上，粒線體DNA控制區高度變異區之序列分析，可用來建構環頸雉基因型的演化親緣關係樹，從中區分出台灣本土與外來亞種環頸雉的基因型，以及分析各族群遺傳多樣性和遺傳結構。本論文研究結論建議，未來進行原生環頸雉族群保育或人工復育計畫時，可利用外部形質測量分析、粒線體DNA基因型與遺傳多樣性分析，做為環頸雉各原生或外來族群的個體辨識工具，並提供擬訂族群保育及復育經營措施之參考依據。

關鍵字

粒線體DNA控制區 ； 遺傳多樣性 ； 族群遺傳結構 ； 台灣環頸雉 ； 形質分析

並列摘要

The study discusses the differences on the morphological characteristics and the genotype of mitochondrial DNA control region between native and imported ring-necked pheasants. Furthermore, the study also analyzes the genetic diversity and population genetic structure for different groups of the Taiwan Island. Three parts mainly compose the study: 1. The morphometric analysis between native species and imported species; 2. The morphological differences among Taiwan ring-necked pheasant groups; 3. The genotype of native and imported pheasants using mitochondrial DNA control region sequencing, analyzes the genetic diversity, genetic divergence and gene flow among population. By the principle component analysis and canonical discriminant analysis the study recognizes effectively on the morphological differences between native species and imported species, and the differences between Taiwan western groups and eastern groups as well. By mitochondrial DNA control region sequencing the relationship of haplotype phylogenies can be reconstructed to distinguish the Taiwan ring-necked pheasant and imported ring-necked pheasant. Additionally, the sequencing can be used to analyze genetic diversity and genetic structure. The results are expected to provide the reference base for identifying and conserving Taiwan ring-necked pheasant.

並列關鍵字

Taiwan Ring-necked Pheasant ； morphometric analysis

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