頁籤選單縮合
| 題 名 | Phylogenetic Divergence in the South Torrent Catfish, Liobagrus mediadiposalis (Pisces; Amblycipitidae) of Korea=韓國的南方急流鯰魚中脂鮰(Liobagrus mediadiposalis, 魚類:鮰科)之種系發生分歧 |
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| 作 者 | Park, Gab-man; Song, Ho-bok; | 書刊名 | 臺灣水產學會刊 |
| 卷 期 | 37:3 2010.09[民99.09] |
| 頁 次 | 頁173-181 |
| 分類號 | 388.5 |
| 關鍵詞 | 中脂鮰; 牛頭鮰; 安得森氏鮰; 鮰科; 細胞色素b; 16S核糖體RNA; 韓國; Liobagrus mediadiposalis; L. obesus; L. andersoni; Amblycipitidae; Cytochrome b; 16S rRNA; Korea; |
| 語 文 | 英文(English) |
| 中文摘要 | 我們檢驗了南方急流鯰魚Liobagrus mediadiposalis的種內系統發生關係,在韓國七條主要的河流(Geum, Nakdong, Nam, Seomjin, Yeongsan, Mangyeong和Buryeongcheon),基於16S核糖體RNA及細胞色素b兩種不同的粒線體基因。粒線體細胞色素b基因750個鹼基配對片段的序列變異分析顯露出族群間深度的分歧(相似性97.9%-99.7%)及地理隔離族群間高度的遺傳分歧。16S核糖體RNA基因752個鹼基配對片段序列的種內變異很低,且近乎相同。七個隔離族群的中脂鮰L. mediadiposalis顯現出高相似性(98.7%-100%)。在這七個族群間,16S核糖體RNA基因序列相較於細胞色素b基因序列,是更加高度地保持恆定。基於種系發生樹的分析結果,三個基因上明顯區隔的分群在本魚種中被確認,Geum和Mangyeong河的一群,Seomjin和Yeongsan河群,及其他的Buryeongcheon、Nam和Nakdong河群。儘管這Seomjin族群的尾鰭具有獨一的形態特徵,但和同種的其他族群相較,其16S核糖體RNA及細胞色素b基因序列,並沒有值得注意的差異被發現。 |
| 英文摘要 | We examined intra-specific phylogenetic relationships in the south torrent catfish, Liobagrus mediadiposalis, in seven major Korean rivers (Geum, Nakdong, Nam, Seomjin, Yeongsan, Mangyeong and Buryeongcheon) based on two different mitochondrial genes: the 16S rRNA and the cytochrome b. Analysis of sequence variation in a 750 bp segment of the mitochondrial cytochrome b gene revealed deep divergence among populations (similarity of 97.9%-99.7%) and high genetic divergence from geographically isolated populations. Intra-specific variation in this 752 bp segment of the 16S rRNA gene sequence was very low and nearly identical. Seven isolated populations of L. mediadiposalis showed a high similarity (98.7%-100%). The 16S rRNA gene sequences were more highly conserved than the cytochrome b sequences among the seven populations. Based on the phylogenetic tree, three genetically distinct clades were identified within this species, one clustering of Geum and Mangyeong rivers group, Seomjin and Yeongsan rivers group and the other clustering of Buryeongcheon, Nam and Nakdong rivers group. In spite of the unique morphological characters in the caudal fin of the Seomjin populations, no remarkable difference was detectable in the 16S rRNA gene and cytochrome b gene sequences from other conspecific populations. |
本系統中英文摘要資訊取自各篇刊載內容。