不同水体营养状态对和白鱼生长性能的影响  

EFFECTS OF WATER TROPHIC STATUS ON GROWTH PERFORMANCES OF HEMICULTER LEUCISCULUS AND ANABARILIUS GRAHAMI

作　　者：贾艳菊[1] 陈毅峰[1] 

机构地区：[1]中国科学院水生生物研究所

出　　处：《水生生物学报》2008年第3期333-338,共6页Acta Hydrobiologica Sinica

基　　金：中国科学院知识创新工程重大项目(KSCXI-SW-13-04);国家973计划(2003CB415103)资助

摘　　要：和白鱼分别是抚仙湖的外来鱼类和土著鱼类。本实验比较研究了水体营养状态对二者生长性能的影响。实验鱼养殖在低、中、高三种营养状态的水体中。其中低营养状态水体组又是每一种鱼中、高营养水体组的对照。水体营养状态对和白鱼摄食率、生长速度、饵料转化效率、蛋白贮积率没有显著影响。不同营养状态水体组实验鱼的体蛋白、脂肪、灰分和能量含量没有显著差异。富营养化对两种鱼生长性能的影响是不同的。特定生长率、饵料转化效率、蛋白贮积率和能量贮积率的种间差异值均随着水体营养状态的提高而加大。与对照组相比,较高营养状态水体中的摄食率、特定生长率、饵料转化效率、蛋白贮积率和能量贮积率的增加率低于白鱼,或者降低率高于白鱼。实验结果说明,高营养状态对生长性能的负面影响较大;对于湖泊水体的富营养化,外来鱼类在生长性能方面不一定比土著鱼类具有优势。Eutrophication and invasion do seem often to go hand in hand. Experimental evidence to support the ability of eutrophication to facilitate either the incidence, speed, or impact of non-indigenous species invasion is conspicuously lacking. With the increase of water trophic status from oligotrophic to mesotrphic, great changes happened in the fish composition of Fuxian Lake lo- cated in Yunnan Plateau, China, at present. A lot of exotic fishes were introduced into Fuxian Lake and spread quickly, and the populations of many native fishes declined which even become extinct. Effects of water trophic status on growth, feeding utilization,body composition of Hemicuher leucisculus （exotic fish for Fuxian Lake） and Anabarilius grahami （native fish for Fuxian Lake） were studied in this experiment, with an attempt to compare their adaptive ability to eutrophication in the aspect of growth performances. Fishes were reared at the water temperature from 17℃ to 20℃ in three types of water （ LTS, the low-trophic-status water; MTS,the moderate-trophic-status water; and HTS, the high-trophic-status water）. The group reared in LTS also served as the control of the groups reared in MTS and HTS for each species. The experiment lasted for 40 days. Feeding rate （ FR）, specific growth rate （SGR）, feed conversion efficiency （FCE） and protein retention efficiency （PRE） were insignificantly affected by water trophic status for both H.leuciscuius and A. grahami. There were no significant differences in body protein, lipid, ash and energy contents among the groups reared in three waters with different trophic status for two experimental fishes. However, energy re- tention efficiencies （ERE） of H.leuciscuius reared in HTS was significantly lower than those reared in LTS, and EREs of A. grahami reared in MTS and HTS were significantly higher than that reared in LTS; Water content of A. grahami reared in MTS was significantly lower than those reared in LTS and HTS. Though effects of water trophic status on t

关 键 词：水体营养状态 生长性能 can 鱇[鱼良]白鱼 云南高原湖泊 

分 类 号：Q142[生物学—生态学]