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優質九孔選種及育種研究

  • 日期:100-04-15
  • 計畫編號:99農科-10.3.1-水-A3(2)
  • 年度:2010
  • 領域:漁業科技研發領域
  • 主持人:蘇惠美

本研究從基隆、台東、台南、高雄及澎湖5地域種群共7家族九孔的1.41齡至2.87齡種貝中,選精卵巢成熟達3-4級者進行繁殖實驗,共9梯次,成功育成3雜交家族,自交家族未有苗育出。育成之雜交幼貝可適應較高之水溫(32℃)及忍受低鹽(15psu),下浪板至裝籃活存率可達60%,裝籃養殖20周活存率高達97%。在3噸FRP水槽組成之循環養殖系統中,比較基隆k1及和南南南雜交稚貝,在相同密度下養殖之成長與活存。養殖20週後活存分別為88%及97%。二種在232日齡及243日齡時其殼長、殼寬與重量之平均值差異小,但基隆k1有較大及較重之九孔成貝。並已將宜蘭養殖之台日雜交後代與本中心選育之雜交家族再雜交以及自交,將以優良的養殖與繁殖技術繁衍子代,提供業者應用,以利九孔養殖產業之恢復並穩定其競爭力。

研究報告摘要(英)


The 1.41-2.87-year aged parent small abalone from the 7 family of 5 geographical populations (Keelung, Tatung, Tainan, Kaohsiung and Penghu) was selected for artificial propagation. Nine experiments were conducted, three family juveniles were successfully produced from hybridization, and all post-larvae from the same family parents died before grew up to be the fry. The hybrid young small abalone acclimatized higher water temperature (32 ℃) and lower salinity (15 psu), the survival during the juveniles period, from leaving the plastic plates to the size not dropping outside the cultured box, reached 60 %, and was 97% in 20 weeks cultured in the boxes. The growth and survival of two family young abalone cultured at the same density in each FRP tank combined in a water recirculated system were compared. The Keelung K1 family grew faster but survived lower contrast to the Tainan-Keelung family. Although the average shell length, width and weight of abalone varied a little at the nearly same age, 232 dph and 243 dph respectively. Besides, the hybrid fry from the Taiwan-Japan and Taiwan family and 6 Taiwan family were produced; they were cultivated in the good environmental and feed with quality food to become the selected family for good performance of growth and reproduction.