Post-operative care of implanted pearl oysters Pinctada fucata in low salinity seawater improves the quality of pearls
- 標題
- Post-operative care of implanted pearl oysters Pinctada fucata in low salinity seawater improves the quality of pearls
- 作者
- Takashi Atsumi, Takashi Ishikawa, Nariaki Inoue, Ryo Ishibashi, Hideo Aoki, Hisayo Abe, Naoaki Kamiya, Akira Komaru
- 文件屬性
- 國外期刊
- 知識分類
- 水產養殖
- 出版年
- 2013
- 刊名
- Aquaculture
- 關鍵字
- Pinctada fucata; Pearl quality; Post-operative care; Low salinity; Implantation; Generalized linear model analysis
- 點閱數
- 2655
摘要
Current techniques for culturing the Akoya pearl oyster Pinctada fucata result in low yields of blemish-free, round pearls (high quality pearls). We compared the effects of five factors on the proportion of high quality pearls produced during culture using a generalized linear model (GLM). Two factors were physiological, shell-closing strength (SCS) and the whole wet weight of host pearl oysters, and three factors were procedural, post-operative care method, technician, and nucleus diameter. Our results suggest that post-operative care methods have the most significant effect on increasing the proportion of high quality pearls. The proportion of high quality pearls was five-fold higher in the group held in low salinity seawater than in the conventional treatment group. We propose a new post-operative care method in which oysters are immersed in low salinity seawater to increase the production of high quality pearls.