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頁籤選單縮合
| 題 名 | 日本鰻仔鰻活存之最適鹽度研究=Studies on the Salinity Tolerance of Larvae of Japanese Eel (Anguilla japonica) |
|---|---|
| 作 者 | 張湧泉; 陳永欣; 賴仲義; 劉富光; | 書刊名 | 水產研究 |
| 卷 期 | 12:1 2004.06[民93.06] |
| 頁 次 | 頁25-31 |
| 分類號 | 438.661 |
| 關鍵詞 | 日本鰻; 仔鰻; 鹽度耐性; Anguilla japonica; Eel larvae; Salinity tolerance; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 二批養成種鰻,經激素催熟後自行產卵。逢機採取孵化之仔鰻,不經馴化直接進行鹽度耐性試驗。第1批仔鰻飼育之鹽度範圍在15∼35 ppt,光照度為320 lux 以下,結果顯示以20 ppt 試驗組之活存率最高,孵化後第7天之活存率仍達63.3 %。第2批仔鰻飼育之鹽度範圍為0∼ 20 ppt,分成室內組 (光照度320 lux 以下) 與暗房組(13 lux以下)進行試驗,結果除0 ppt 組之仔鰻於第2天全部死亡,其他各組無論是室內組或暗房組均以10 ppt 組為最高,仔鰻孵化後第9天之活存率分別是76.7 % 及63.3 %;另外,室內組與暗房組仔鰻於孵化後第9天之活存率並無顯著差異。仔鰻從孵化後第6天起,眼睛黑化且轉為底棲性。 |
| 英文摘要 | Two groups of Japanese eel (Anguilla japonica) larvae, hatched from hormone-induced spawned eggs, were used to test the salinity tolerance without acclimation. For the first group, larvae were reared at the salinities of 15 ~ 35 ppt indoors with light intensities below 320 lux. The survival rate of larvae was highest (63.3%) for 7-d-old larvae at a salinity of 20 ppt. For the second group, larvae were reared at 0 ~ 20 ppt salinities indoors with a similar light intensity as group 1 and in a dark room with light intensities below 13 lux, respectively. In the second group, larvae died within 2 d in 0 ppt, but all larvae in 10 ppt had the highest survival rate that the 9-d-old larvae reached 76.7% indoors and 63.3% in the dark room; survival rates of 9-d-old larvae between indoor and dark-room did not significantly differ. Eye pigmentation and the demersal habit of larvae occurred from day 6. |
本系統中英文摘要資訊取自各篇刊載內容。