Medusa consumption and prey selection of silver pomfret Pampus argenteus juveniles  

作　　者：刘春胜 庄志猛 陈四清 施兆鸿 燕敬平 刘长琳 

机构地区：[1]Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences [2]East Sea Fisheries Research Institute,Chinese Academy of Fisheries Sciences

出　　处：《Chinese Journal of Oceanology and Limnology》2014年第1期71-80,共10页中国海洋湖沼学报（英文版）

基　　金：Supported by National Basic Research Program of China(973 Program)(No.2011CB403605);the Key Science and Technology Program of Qingdao(No.11-3-1-6-hy);the Special Funds for the Basic R&D Programin the Central Non-Profit Research Institutes(No.20603022011008);the National Key Technology R&D Program during the Twelfth Five-Year Plan Period(No.2011BAD13B01)

摘　　要：The current study explored Aurelia aurita and Rhopilema esculent um consumption by silver pomfret juveniles, as well as their prey selection between the two jellyfi sh species. Silver pomfret juveniles weighing 1±0.1 g actively preyed on both the species. Their daily A. aurita consumption was 11.6 times their own body weights regardless of the size of A. aurita medusae. Their daily R. esculent um consumption was 13, 9.1, 5, and 4.1 times their own body weights when the R. esculentum medusae were 10, 20, 30, and 40 mm in bell diameter, respectively. The survival rates of the R. esculent um were higher than those of the A. aurita. When the R. esculent um medusae were more than 30 mm in bell diameter, their survival rate exceeded 92%. Silver pomfrets serve as a type of potential predators on A. aurita in coastal waters, and they have little infl uence on R. esculent um with a size exceeding 30 mm. Besides, A. aurita may be able to be used as fi sh prey in silver pomfret artifi cial breeding.The current study explored Aurelia aurita and Rhopilema esculentum consumption by silver pomfret juveniles, as well as their prey selection between the two jellyfish species. Silver pomfret juveniles weighing 1~0.1 g actively preyed on both the species. Their daily A. aurita consumption was 11.6 times their own body weights regardless of the size ofA. aurita medusae. Their daily R. esculentum consumption was 13, 9.1, 5, and 4.1 times their own body weights when the R. esculentum medusae were 10, 20, 30, and 40 mm in bell diameter, respectively. The survival rates of the R. esculentum were higher than those of the A. aurita. When the R. esculentum medusae were more than 30 mm in bell diameter, their survival rate exceeded 92%. Silver pomfrets serve as a type of potential predators on A. aurita in coastal waters, and they have little influence on R. esculentum with a size exceeding 30 mm. Besides, A. aurita may be able to be used as fish prey in silver pomfret artificial breeding.

关 键 词：Aurelia aurita Rhopilema esculentum Pampus argenteus CONSUMPTION survival rate 

分 类 号：S965.331[农业科学—水产养殖] Q959.483[农业科学—水产科学]