大连海洋大学学报

2011, v.26(03) 35-38

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pH、盐度和不同饵料对咖啡金黄水母幼体生长与存活的影响
The effect of pH,salinity and food organism species on survival and growth of larval jellyfish Chrysaora melanaster

杨为东;郭玲玲;赵文;滕利平;杨担光;张荣坤;

摘要:

采用实验生态学方法研究了pH、盐度和不同饵料对观赏类水母——咖啡金黄水母Chrysaora melan-aster幼体生长和存活的影响。结果表明:咖啡金黄水母幼体(伞径为2 cm)的适宜pH为7.3~8.8;盐度的生态幅为20~45;不同饵料条件下,第11天时饵料为卤虫无节幼体组与饵料为桡足类组的水母幼体的平均伞径有显著性差异(P<0.05),第16天时饵料为海月水母组与饵料为桡足类组的水母幼体的平均伞径有显著性差异(P<0.05),第20天时海月水母组的幼体生长最快,卤虫无节幼体组的次之,混合桡足类组的生长较慢。

关键词: 咖啡金黄水母;pH;盐度;饵料;生存;生长

Abstract: Effects of pH,salinity and food organism species on survival and growth of larval jellyfish Chrysaora melartaster were studied by a ecological method.The maximal survival and best growth in the larvae were showed at pH of from 7.3 to 8.8,and a salinity from 20 to 45.There was significant difference in the test diameter in the jellyfish in Artemia group and copepoda group 11 days after the experiment,and 16 days after the experiemnt,significant difference in the growth performance between moon jellyfish group and copepoda group.The range of the fimbria diameter 20 days after feeding was arranged as the following as moon jellyfish group>Artemia group>mixed copepoda group.

Keywords: Chrysaora melanaster;pH;salinity;food organism;survival;growth

基金项目: 辽宁省教育厅重点实验室项目(20060181)

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