Comparison of Cultivation Performance of Triploid Oysters in the Dalian Sea Area
WANG Chunpan1,2, WANG Shuo2,3, LI Hualin2,3, LI Dacheng2,3, TENG Weiming2,3, XIE Xi2,3,4, ZHANG Hong5, WANG Qingzhi2,3,4
1. School of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China; 2. Dalian Key Laboratory of Innovative Utilization and Breeding of Marine Shellfish Germplasm Resources, Liaoning Ocean and Fisheries Sciences Research Institute, Dalian 116023, China; 3. Key Laboratory of Protection and Utilization of Aquatic Germplasm Resources, Ministry of Agriculture and Rural Affairs, Liaoning Ocean and Fisheries Sciences Research Institute, Dalian 116023, China; 4. Dalian Xinghaiwan Laboratory, Dalian 116023, China; 5. Dalian Detai Marine Pasture Co., Ltd., Dalian 116001, China
Abstract：This study aims to systematically evaluate the aquaculture adaptability of autotriploid oysters (diploid Pacific oyster Crassostrea gigas♀×tetraploid Pacific oyster C. gigas♂) and allotriploid oysters (diploid Pacific oyster C. gigas♀×tetraploid Portuguese oyster C. angulata♂) in the Dalian sea area. Their growth performance, nutrient accumulation, and gonadal development characteristics were compared to provide scientific basis for selecting optimal oyster varieties for local aquaculture practices. The experiment commenced in June 2023, conducting a seven-month offshore raft culture to measure growth indicators, nutritional components, and gonadal development characteristics of two triploid oyster groups. Results showed that the allopolyploidy oysters had significantly higher specific growth rates than the autopolyploids did in metrics such as shell height, shell width, and wet body weight. Nutritional analysis revealed that there are significantly higher crude protein and glycogen contents in allopolyploidy oysters compared to autopolyploids during the winter of 2023. Similarly, in the summer of 2024, allopolyploidy oysters maintained a significant advantage in fat content. During the reproductive season, autopolyploids oysters exhibited significantly more advanced gonadal development than allopolyploidy oysters. In summary, allopolyploidy oysters demonstrated faster growth rates and more efficient nutrient accumulation in Dalian waters, while autopolyploids showed higher meat yield. This finding provides scientific reference for selecting triploid oyster varieties suitable for raft culture in the Dalian sea area.
王春畔, 王朔, 李华琳, 李大成, 滕炜鸣, 谢玺, 张洪, 王庆志. 大连海域三倍体牡蛎养殖性能比较研究[J]. 水产科学, 2026, 45(4): 640-647.
WANG Chunpan, WANG Shuo, LI Hualin, LI Dacheng, TENG Weiming, XIE Xi, ZHANG Hong, WANG Qingzhi. Comparison of Cultivation Performance of Triploid Oysters in the Dalian Sea Area. Fisheries Science, 2026, 45(4): 640-647.
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2026, Vol. 45 
