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水產研究(1993年創刊)

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  • 點閱: 2358
  • 日期: 2019-07-16
水產研究(1993年創刊)-臺灣及澳洲大堡礁南部海域之玳瑁石斑遺傳多樣性及族群遺傳結構初探
主題: 臺灣及澳洲大堡礁南部海域之玳瑁石斑遺傳多樣性及族群遺傳結構初探
摘要(中):
玳瑁石斑 (Longfin grouper, Epinephelus quoyanus) 是一種棲息於珊瑚礁的小型石斑魚種,廣泛分布於西太平洋海域。為瞭解該魚種在臺灣周邊海域的遺傳歧異度及族群遺傳結構現況,本研究利用 14 組微衛星基因座,針對2011 ~ 2013 年間在臺灣北部、澎湖及澳洲大堡礁等海域採集的74 尾玳瑁石斑樣本進行分析。研究結果顯示,14 組微衛星基因座在 3 個族群均呈現多型性,且北臺灣與澎湖兩個族群各別有 9 組及 8 組的微衛星基因的異型合子觀察值大於期望值。自交指數 (FIS) 介於 -0.165 ~ 0.403,且 3 個族群內均無顯著的自交現象。族群間遺傳分化指數 (Fst) 介於 0.0018 ~ 0.0715,且兩兩族群之間均無顯著差異。遺傳結構組成的分析結果顯示,所有玳瑁石斑樣本應可分為 2 群 (當 K = 2,具有最高的可信值)。上述結果可推論玳瑁石斑的遺傳歧異度仍高,且在臺灣周邊海域的族群無明顯結構存在,未來進行漁業資源評估管理時應可視為同一族群。
出版日期: 2015/12/30
標題title(英): A Preliminary Study on Genetic Diversity and Population Genetic Structure of Longfin Grouper (Epinephelus quoyanus) in Taiwan and Southern Great Barrier Reef, Australia
作者: 陳高松‧劉姵妤‧宋嘉軒‧溫國彰‧蕭聖代
卷別: 23
期別: 2
頁碼: 27-38
作者 auther(英): Kao-Sung Chen, Pei-Yu Liu, Chia-Hsuan Sung, Colin Kuo-Chang Wen and Sheng-Tai Hsiao
摘要abstract(英): The objective of the present study was to investigate the genetic diversity and population genetic structure of the commercially important longfin grouper, Epinephelus quoyanus, which is widely distributed in the western Pacific Ocean. A total of 74 individuals were sampled from the waters of northern Taiwan (NT), Penghu (PH) and southern Great Barrier Reef (GBR), Australia (AUS), from 2011-2013. A total of 14 microsatellite loci were used to determine the population genetic diversity and structure of these 3 populations. The results from the selected microsatellites showed that the genes for the 3 populations were polymorphic. NT and PH had 9 and 8 microsatellite loci, respectively, and the heterozygosity observed was higher than the heterozygosity expected. FIS values ranged from -0.165 to 0.403, with no significant differences among the populations. The pairwise population differentiation index (Fst) values ranged from 0.0018 to 0.0715, with no significant differences between the groups, indicating that there was low population differentiation among the 3 populations. The result of Bayesian-clustering assignment test revealed that the sampled groupers can be regarded as two populations (when k =2, it has the highest maximum likelihood value) based on allele frequencies of all sampled individual. There were several common alleles among the 3 populations, supporting the conclusion that there was low population differentiation among the 3 populations and that the NT and PH populations should be viewed as a single population for the purposes of fishery resource assessment and management.
使用語言: 中文
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