Effects of stocking density on the aquaculture performance of diploid and triploid, Pacific oyster Crassostrea gigas and Portuguese oyster C. angulata in warm water aquaculture. (31st July 2021)

• Record Type: Journal Article
• Authors: Tan, Karsoon; Deng, Longhui; Zheng, Huaiping
• Is Part Of: Aquaculture research. Volume 52:Number 12(2021)
• Page Start: 6268
• Page End: 6279
• Publication Date: 2021-07-31
• Subjects: Crassostrea spp. -- fatty acids -- growth performance -- ploidy -- survival rate; Aquaculture -- Periodicals; Fishery management -- Periodicals; 639.8
• DOI: 10.1111/are.15489
• Languages: English
• ISSNs: 1355-557X

Abstract

Abstract: The Pacific oyster ( Crassostrea gigas ) and the Portuguese oyster ( C . angulata ) are important oyster species for commercial aquaculture. In this study, three stocking density regimes, including 20, 30 and 40 oysters/basket, were used to study the effects of stocking density on growth performance, survival rate and lipid nutritional quality of diploid and triploid C . gigas and C . angulata . The experiment lasted 163 days, from to 22 November 2011 to 3 April 2012. The main findings of this study are as follows: (1) C . gigas has growth advantage over C . angulata in Shantou waters; (2) geographic origin of the oysters has an impact on the overall performance of diploid and triploid oysters; (3) triploids are generally no growth and survival advantage over diploids in spring and summer; (4) oysters at low stocking density were generally outperformed those at high stocking density; (5) lipid composition of oysters is not affected by ploidy and stocking density; (6) in Shantou waters, C . angulata is more nutritious than C . gigas . This study compares the performance of C . gigas and C . angulata triploidy for the first time. The findings of this study can provide useful information to be applied in oysters aquaculture.