Seasonal variations in growth and clearance rate of the Zhikong scallop <Emphasis Type="Italic">Chlamys farreri</Emphasis> suspended in the deep water of Haizhou Bay,China |
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| Authors: | Zonghe Yu Baozhong Liu Hongsheng Yang Yi Zhou Kun Xing Qiang Xu Libin Zhang |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China;(2) Key Laboratory of Marine Bio-Resources Sustainable Utilization (LMB) and Key Laboratory of Applied Marine Biology of Guangdong Province and Chinese Academy of Sciences (LAMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301 Guangzhou, China;(3) Dalian Fisheries College, 116023 Dalian, China; |
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| Abstract: | The growth and survival of the Zhikong scallop Chlamys farreri suspended in deep water of Haizhou Bay were studied from July 2007 to June 2008, and the biodeposition method was used to
estimate the clearance rate of C. farreri under field conditions. Results showed that the scallop grew fast during all the culture time, with the exception of summer.
The condition index of the scallop increased with time and reached the highest value in spring of the second year. The survival
of scallops was 60.8 ± 3.9% at the end of this study, mortality occurring mainly during the summer and autumn of the first
year. The clearance rate fluctuated obviously with season,with the highest value in September 2007, and the lowest value in
March 2008. Factors accounting for variations in growth and clearance rate of scallops are also discussed. |
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