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刺尻魚屬量產技術開發

  • 日期:111-10-24
  • 計畫編號:110農科-6.2.4-水-A1(6)
  • 年度:2021
  • 領域:漁業科技研發
  • 主持人:許鐘鋼
  • 研究人員:蘇勰忠、陳久林、許秀媛、劉素華

將雌雄配對比1:1的荊眼刺尻魚種魚蓄養在250公升的PP桶中,以自行配製之人工飼料投餵,並收集計算卵粒,進行仔稚魚之繁殖試驗。荊眼刺尻魚種魚產卵期自6月26日至11月1日(129天),共產卵125天,合計卵數319,433顆(49.91g),其中上浮卵217,234顆(68.01%),下沉卵102,201顆(31.99%),日平均產卵數2,555 ± 1,143顆,平均每g卵約6,400顆。產卵期間養殖水溫25.5 - 27.7℃。


共有6對種魚產卵量超過10,000顆,此6對種魚產卵量303,812顆,佔總產卵量95.11 %。其中以F1組種魚產卵70,834顆最多,其次為F7組產卵62,686顆。上浮卵率以F7的87.48 %最高,F14的47.08 %最低。日均產卵數以F1的571 ± 349顆最多,F3的272 ± 168顆最少。荊眼刺尻魚的受精卵是由配對種魚自發產卵收集獲得,水溫控制在26.0 - 26.6 ℃下孵化。受精卵(n=30)是透明、圓形的浮性卵;平均直徑為0.65 ± 0.02 ㎜。


荊眼刺尻魚種魚能夠在人工環境下持續產卵,是建立人工繁殖技術的第一步。受精卵超過60%的上浮卵率,顯示種魚的成熟度跟飼料營養均有相當的水準。初步的餌料生物測試,牡蠣受精卵與纖毛蟲均能被攝食,配合另一個餌料純化技術,將能在未來建立穩定的繁殖技術平台,達到推廣之目的。

研究報告摘要(英)


The male and female ratio of was 1:1, Centropyge acanthops was stocked in 250 liters of PP tanks with artificial feed, and the eggs were collected and calculated to carry out the breeding test of the larvae. The Spawning period of C. acanthops was from June 26 to November 1 and lasted 129 days, including 125 spawning days. The total eggs was 319,433顆(49.91g), including 217,234 buoyant eggs(68.01 %) and 102,201 sinking eggs (31.99 %). The average daily spawning number was 2,555 ± 1,143, about 6,400 eggs per gram. During the period, the water temperature was 25.5 - 27.7 ℃. There were 6 pairs of spawning more than 10,000 eggs. The spawning amount of these 6 pairs was 303,812, accounting for 95.11 % of the total. Among them, pair F1 laid 70,834 eggs, followed by pair F7 with 62,686 eggs. The rate of buoyant eggs was the highest in pair F7 (87.48 %) and lowest in pair F14 (47.08 %). The highest average number of eggs laid per day was 571 ± 349 in pair F1 and the lowest was 272 ± 168 in pair F3.

The eggs of C. acanthops was obtained from spontaneous spawning of the broodstock fish in captivity and incubated at 26.0 -26.5 °C throughout the study. Fertilized eggs (n = 30) of C. acanthops is transparent, spherical and pelagic; the mean diameters of the eggs were measured at 0.65 ± 0.02 ㎜ for C. acanthops.

The first step in establishing artificial reproduction technology is that the seed fish of C. acanthops spawns continuous in an artificial environment. The buoyant rate of fertilized eggs exceeds 60% shows that the maturity of breeding fish is at a similar level with feed nutrition. According to the preliminary baittest, oyster fertilized eggs and ciliates can be fed. Combined with another bait purification technology, a stable breeding technology platform can be established in the future to achieve the purpose of promotion.