Analysis of Mineral Elements in the Soft Tissue of Pinctada martensii from Sea Cage Aquaculture and Re-circulating Aquaculture

Key words: 
• Pinctada martensii /
• aquaculture method /
• mineral elements

Abstract: Pinctada martensii,cultured in two different culture methods: sea cage aquaculture and re-circulating aquaculture were collected to determine the water content in their soft tissue by using direct-drying method,and their mineral elements（ Ca,Mg,Zn,Fe,Cr,Se,Cu,Mn,Ni,V,Mo,Cd and Co） by using ICP-AES and ICP-MS after processed by wet digestion method. The results show the 13 mineral elements in the soft tissue of P. martensii cultured for the same period of time but under different culture methods were significantly different（ P ＜ 0. 05）,except Co and Se. P. martensii had a higher content of Mg,Ca,Zn,Fe,Cr,Cu in the soft tissue under re-circulating aquaculture than under the sea cage aquaculture,but a lower content of Mn,Cd,Mo,V and Ni. No obvious significance was observed in mineral elements Co and Se under the two culture methods.