Survival,growth and immune activity of scallop Chlamys farreri cultured at different depths in Haizhou Bay(Yellow Sea,China) during hot season  

作　　者：于宗赫 杨红生 刘保忠 邢坤 张立斌 许强 

机构地区：[1]Institute of Oceanology,Chinese Academy of Sciences [2]Key Laboratory of Sustainable Use of Chinese Academy of Sciences for Marine Living Resources,Key Laboratory of Marine Biological Application of Guangdong Province, South China Sea Institute of Oceanology,Chinese Academy of Sciences [3]Dalian Fisheries University

出　　处：《Chinese Journal of Oceanology and Limnology》2010年第3期498-507,共10页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Key Technology R&D Program (No. 2006BAD09A02);the High Technology Research and Development Program of China (863 Program) (Nos. 2006AA100304, 2006AA100307);the Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX2-YW-Q07-03)

摘　　要：Survival, growth and immune response of the scallop, Chlamys farreri, cultured in lantern nets at five different depths (2, 5, 10, 15, and 20 m below the sea surface) were studied in Haizhou Bay during the hot season (summer and autumn) of 2007. Survival and growth rates were quantified bimonthly. Immune activities in hemolymph (superoxide dismutase (SOD) and acid phosphatase (ACP)) were measured to evaluate the health of scallops at the end of the study. Environmental parameters at the five depths were also monitored during the experiment. Mortalities mainly occurred during summer. Survival of scallops suspended at 15 m (78.0%) and 20 m (86.7%) was significantly higher than at 2 m (62.9%), 5 m (60.8%) or 10 m (66.8%) at the end of the study. Mean shell height grew significantly faster at 10 m (205.0 μm/d) and 20 m (236.9 μm/d) than at 2, 5 or 15 m in summer (July 9 to September 1); however, shell growth rate at 20 m was significantly lower than at the other four depths in autumn (September 2 to November 6). In contrast to summer, scallops at 5 m grew faster (262.9 μm/d) during autumn. The growth of soft tissue at different depths showed a similar trend to the shell. Growth rates of shell height and soft tissue were faster in autumn than in summer, with the exception of shell height at 20 m. SOD activity of scallops increased with depth, and ACP activity was significantly higher at 15 and 20 m than at other depths, which suggests that scallops were healthier near the bottom. Factors explaining the depth-related mortality and growth of scallops are also discussed. We conclude that the mass mortality of scallop, C. farreri, during summer can be prevented by moving the culture area to deeper water and yield can be maximized by suspending the scallops in deep water during summer and then transferring them to shallow water in autumn.Survival, growth and immune response of the scallop, Chlamysfarreri, cultured in lantern nets at five different depths （2, 5, 10, 15, and 20 m below the sea surface） were studied in Haizhou Bay during the hot season （summer and autumn） of 2007. Survival and growth rates were quantified bimonthly Immune activities in hemolymph （superoxide dismutase （SOD） and acid phosphatase （ACP）） were measured to evaluate the health of scallops at the end of the study. Environmental parameters at the five depths were also monitored during the experiment. Mortalities mainly occurred during summer. Survival of scallops suspended at 15 m （78.0%） and 20 m （86.7%） was significantly higher than at 2 m （62.9%）, 5 m （60.8%） or 10 m （66.8%） at the end of the study. Mean shell height grew significantly faster at 10 m （205.0 μm/d） and 20 m （236.9 μm/d） than at 2, 5 or 15 m in summer （July 9 to September 1）; however, shell growth rate at 20 m was significantly lower than at the other four depths in autumn （September 2 to November 6）. In contrast to summer, scallops at 5 m grew faster （262.9 μm/d） during autumn. The growth of soft tissue at different depths showed a similar trend to the shell. Growth rates of shell height and soft tissue were faster in autumn than in summer, with the exception of shell height at 20 m. SOD activity of scallops increased with depth, and ACP activity was significantly higher at 15 and 20 m than at other depths, which suggests that scallops were healthier near the bottom. Factors explaining the depth-related mortality and growth of scallops are also discussed. We conclude that the mass mortality of scallop, C. farreri, during summer can be prevented by moving the culture area to deeper water and yield can be maximized by suspending the scallops in deep water during summer and then transferring them to shallow water in autumn.

关 键 词：Chlamysfarreri SURVIVAL GROWTH mortality immune activity hot season water depth 

分 类 号：Q944[生物学—植物学]