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研究应用室内或现场实验生态方法测定了黄、渤海 8种鱼类的生态转换效率及其主要影响因素 ,比较了室内与现场方法所测得数据的差异。结果表明 :(1) 8种鱼类的生态转换效率有显著差异 ,以湿重或比能值为单位表示的生态转换效率变化范围分别为 12 .9%～ 39.0 %和 14.8%～ 46 .1% ;(2 )温度、体重、摄食水平、饵料种类和群居行为等生态、生理因素均可能引起鱼类生长和生态转换效率等生态能量学特征的改变。其中 ,生态转换效率随温度和摄食量增大均呈倒U型变化趋势 ,随体重增大则呈减速下降趋势。当鱼类摄食不同饵料生物或群居行为发生变化时 ,能引起其摄食率与生长率显著差别 ,却不能使以比能值为单位表示的能量转化效率发生显著变化 ;(3)不同研究方法可能引起测定结果的显著不同 ,且其差异程度随鱼种不同而变化。
The ecological conversion efficiency and its main influential factors of eight species of fish in the Yellow Sea and the Bohai Sea were determined by indoor or field experimental ecological methods. The differences of the measured data from the indoor and in-situ methods were compared. The results showed that: (1) The ecological conversion efficiencies of eight fish species were significantly different. The range of ecological conversion efficiency expressed in terms of wet weight or specific energy was 12.9% ~ 39.0% and 14.8% ~ 46.1, respectively %; (2) Ecological and physiological factors such as temperature, body weight, feeding level, food species and social behavior may lead to changes in eco-energetic characteristics such as fish growth and ecological conversion efficiency. Among them, the ecological conversion efficiency showed an inverted U-shaped trend with the increase of temperature and food intake, and then decreased with the increase of body weight. When the fish feed on different food organisms or social behavior change, can cause significant difference between their feeding rate and growth rate, but can not make the specific energy value expressed in significant changes in energy conversion efficiency; (3) different research methods may Causing significant differences in the measurement results, and the degree of difference varies with the species of fish.