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國內牡蠣的產業分工大約分為天然附苗業，稚貝中間育成業與成貝養成業，其中天然的附苗業迭迭遭遇歉收或附苗期難以掌握等問題，本研究從經由人工繁殖，篩選具特定目的(如成長快或抗病力強等)之牡蠣種苗，以解決成長不均與緩慢等問題。另外，蚵農在附苗期的掌握均依賴過去的經驗，往往無法精確掌握附苗時機，以至常常沒有附到足夠的苗或是沒有附到苗，而人工苗可以整年生產，以彌補天然牡蠣苗之不足。因此藉由篩選出成長快速的牡蠣品系與人工蚵串生產技術，應可逐步提升台灣牡蠣的生產力。 收集台南地區種貝約20顆(總重1.4 kg)於98.8.27繁殖，98年9月14-18日開始附苗，其中10條(0.3-0.5 cm殼高)移至台南安平外海進行養殖3.5 (98.12.20-99.3.12)個月而達到市場規格(4-10 cm)，再選取其中較大牡蠣作為種貝，於99.04.07進行人工繁殖，於99年05.01-5.18生產出700條第一代(F1)快速成長人工蚵串，自99.07.28起放養人工蚵串(最初殼高為9.84±4.98 mm)成長至99.11.18(平均殼高為66.61±13.13 mm)(30日相對成長率為153％)，殼高範圍23.57-91.85 mm。三條崙地區自99.08.02至10.20放養殼高7.89±1.49mm人工蚵串成長至30.72±5.55 mm(30日相對成長率為82％)。 以去年(98.09)生產出的單體牡蠣，自99.01.29開始，選取其中兩種規格，第一種規格平均重量1.7±0.5 g，平均殼高27.1±3.5 mm，第二種規格平均重量7.5±1.9 g，平均殼高42.75±4.3 mm，每月量測其全重與殼長，至99.10.04為止，養殖八個月，第一種規格平均重量(成長率)為28.46±8.68 g(1535％)，平均殼高(成長率)為59.12±7.51 mm(118％)。第二種規格平均重量(成長率)為30.13±9.16 g (302％)，平均殼高(成長率)為60.88±8.25 mm(43％)。

研究報告摘要(英) Study on the technique of artificial oyster cultch The oyster industries in Taiwan were divided into natural setting, spat rearing and grow-out industry. The oyster farmers met the problems of inconsistent production of spat and the difficulty in ascertaining the setting period of larvae. It is difficult to select a fast-growing or disease-resistant strain of oysters to grow in the sea. So oyster farmers underwent the problems about typhoon and inconsistent oyster growth. The oyster farmers were not had enough informations of the accurate setting period of larvae to get enough spats. In this study we will conduct the selective breeding of oyster to get a fast-growing strain to enhance the productivity of oyster. And we will compare the fast-growing strain and natural spat about the growth and survival in the sea to assess the feasibility of artificial oyster cultch rearing in the sea. The comparison of artificial and natural oyster strings reared in the coast of An-ping in Tainan were showed that the growth of artificial oyster strings produced by Mariculture of Taiwan Fisheries Institute were one and half faster than those of natural oyster strings. So oyster production by means of selective breeding is very potential. In order to understand the growth parameter of F1 generation of fast-growing oyster, two sizes of cultchless oyster were reared in the earthen pond. The initial mean weight and shell height of smaller one was 1.7 ± 0.5 g and 27.1 ± 3.5 mm. The initial mean weight of larger one was 7.5 ± 1.9 g and mean shell height 42.75 ± 4.3 mm. After 8 months, the growth rate in live weight of small and large sizes was 1535% and 302%, respectively. The growth rate in shell height of small and large sizes was 118% and 43%, respectively. The artificial oysters through selective breeding were reared along the coast of Santiaolun from Aug. 2 to Oct. 20, 2010. The initial and final shell height were 7.89 ± 1.49 mm and 30.72 ± 5.55 mm. The relative growth rate per month was 82 %. In An-pin, Taiwan, artificial oyster were reared from Aug. 2 to Oct. 20, 2010, and the relative growth rate per month was 153 %.