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水產研究(1993年創刊)

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  • 點閱: 1575
  • 日期: 2019-05-24
水產研究(1993年創刊)-近親交配對紅色吳郭魚成長與死亡率之影響
主題: 近親交配對紅色吳郭魚成長與死亡率之影響
摘要(中):
本試驗比較了對照組及連續6個世代以全同胞近親繁殖的近交組之三月齡體重、標準體長、全長及死亡率,以探討紅色吳郭魚近親育種過程中的近交退化現象。以 t 檢定統計後,其中對照組之F3的三月齡體重、標準體長及全長的平均值都顯著大於其他世代 (p<0.05);累積死亡率的平均值雖有大小差異,但都沒有隨著世代數的增加而呈現規律的變化 (p>0.05)。近交組的 F1 及 F2 之三月齡體重、標準體長、全長及累積死亡率的平均值沒有顯著差異 (p>0.05),然而 F3以後則隨著世代數的增加,體重、標準體長及全長呈規律的下降,累積死亡率則上升。試驗結果顯示有顯著的近交退化現象,近交退化現象起始於F3,尤以標準體長及累積死亡率最為顯著 (p<0.05),其中死亡率多集中在一及二月齡的時期。
出版日期: 2014/6/30
標題title(英): Effects of Inbreeding on Growth and Mortality in Red Tilapia, Oreochromis mossambicus × O. niloticus
作者: 曾福生‧杜金蓮‧謝立偉‧王姿文‧張錦宜
卷別: 22
期別: 1
頁碼: 63-70
作者 auther(英): Fu-Shen Tseng, Jin-Lien Du, Li-Wei Hsieh, Zi-Wen Wang and Chin-I Chang
摘要abstract(英): The objective of this study was to understand the effects of inbreeding depression in established lines of Taiwanese red tilapia (Oreochromis mossambicus × O. niloticus), by comparing of body weight (BW), standard length (SL), total length (TL) and accumulated mortality (AM) data for control and 6-generation full-sib inbreeding groups using t-test analysis. In the control group, the average BW, SL, and TL values of three-month-old fish of F3 were significantly larger than those of F1 and F2 (p<0.05). There were no significant differences in AM values among F1 to F6 (p>0.05). In the inbreeding group, there were no significant differences in the BW, SL, TL and AM values of three-month-old fish between F1 and F2 (p>0.05), but after F3, the average BW, SL and TL decreased with later generations from F3 to F6 (p<0.05), and AM increased with later generations (p<0.05). This suggests that the traits of BW, SL, TL and AM were significantly affected by the level of inbreeding, especially for SL and AM. The mortality due to inbreeding depression occurred usually at the ages of one month old and two months old.
使用語言: 中文
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