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我国渔场近十年来人工培育的名贵鱼类增加了1.5倍以上.1982年仅向天然水域投放的鲑科鱼类的稚鱼就有10多亿尾,鲟科鱼类稚鱼为1.26亿尾.为了评价养殖措施的效益,必须制订综合评价渔场培育稚鱼质量的方法.通常使用的鱼的体长一体重指标有时不能正确反映出稚鱼的生物学状况.显然,生活在天然水域条件下的稚鱼所表现的生命力应当是评价其质量的重要标准之一,在这样的条件下,稚鱼所固有的特点才能充分发挥出来.这说明,在评价稚鱼质量时,必须考虑其主要器官(心血管、内分泌、呼吸和中枢神经系统)的发育状况和适应能力.中枢神经系统是保证机体与外界生物和非生物环境因素一致性、最有可塑性的系统,它控
The fish farmed in China in the past ten years increased by more than 1.5 times the number of rare species of fish.In 1982 only to the natural waters of the salmonidae juveniles have more than 1 billion tail, sturgeon fish juveniles to 126 million tail. In order to evaluate the effectiveness of aquaculture measures, a comprehensive assessment of the quality of larvae in fisheries must be developed. Commonly used fish body length and body weight indicators sometimes do not accurately reflect the biological status of juveniles. Clearly living in natural waters conditions The vitality demonstrated by juveniles should be one of the most important criteria for assessing their quality, under which conditions the characteristics inherent to juveniles can be fully exerted, indicating that the quality of juvenile fish must be evaluated in terms of its major organs Cardiovascular, endocrine, respiratory and central nervous system development and adaptability of the central nervous system is to ensure that the body with the outside world biological and non-biological environmental factors consistent, most plasticity of the system, which control