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盐度与体重对克氏原螯虾代谢的影响
引用本文:慕峰,吴旭干,成永旭,陈亚瞿.盐度与体重对克氏原螯虾代谢的影响[J].海洋渔业,2007,29(2):153-158.
作者姓名:慕峰  吴旭干  成永旭  陈亚瞿
作者单位:1. 上海水产大学,农业部水产种质资源与养殖生态重点开放实验室,上海,200090
2. 中国水产科学研究院东海水产研究所,上海,200090
基金项目:国家自然科学基金 , 上海金沙滩投资发展有限公司项目 , 上海市重点学科建设项目
摘    要:在水温为20.0±0.5℃条件下,研究了不同盐度(0、3.0、6.0、9.0、12.0)和不同体重(平均体重为7~8 g、19~20 g两种规格)对克氏原螯虾的耗氧率、CO2排出率以及NH3-N排泄率的影响。结果表明,低盐度条件下(0~6.0),两种规格克氏原螯虾的耗氧率、CO2排出率和NH3-N排泄率均随着盐度的升高而显著上升(P<0.05),盐度为6的条件下代谢水平达最高值,此后随着盐度的升高耗氧率、CO2排出率和NH3-N排泄率显著下降(P<0.05);相同盐度下,小规格(平均体重为7~8 g)克氏原螯虾的耗氧率、CO2和NH3-N排泄率显著高于大规格虾(平均体重为19~20 g)。相同规格的克氏原螯虾在不同盐度条件下呼吸商、氧氮比均无显著差异(P>0.05),但是大规格的克氏原螯虾呼吸商和氧氮比显著大于小规格的虾(P<0.05),前者的代谢率极显著低于后者(P<0.01)。

关 键 词:克氏原螯虾  盐度  体重  代谢
文章编号:1004-2490(2007)02-0153-06
修稿时间:2007-03-23

Effects of salinity and body weight on metabolism of Procambarus clarkii
MU Feng,WU Xu-gan,CHENG Yong-xu,CHEN Ya-qu.Effects of salinity and body weight on metabolism of Procambarus clarkii[J].Marine Fisheries,2007,29(2):153-158.
Authors:MU Feng  WU Xu-gan  CHENG Yong-xu  CHEN Ya-qu
Institution:1. Key and Open Laboratory of Aquatic Genetic Resources and Aquaculture Ecosystem Certificated by the Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, China; 2. East China Sea Fisheries Research Institute, China Academy of Fishery Sciences, Shanghai 200090, China
Abstract:The study was performed to investigate the effects of salinity and body weight on oxygen consumption,CO2 production and ammonia-N excretion of swamp crayfish Procambarus clarkii under the water temperature of 20.0±0.5 ℃.The crayfish were divided into two groups by their average body weight of 7~8 g and 19~20 g and five salinity groups ranged from 0 to 12.0 with the interval of 3.The results showed that the oxygen consumption,CO2 production and ammonia-N excretion of the two groups of Procambarus clarkii increased significantly with the increment of salinity at low salinity levels(0~6)(P<0.05),the highest level of metabolism was found in the group of salinity of 6.Then the oxygen consumption,CO2 production and ammonia-N excretion of Procambarus clarkii decreased apparently with the increment of salinity in the range of 6.0~12.0(P<0.05).At the same salinity level,the oxygen consumption,CO2 production and ammonia-N excretion of Procambarus clarkii of the small size(average body weight of 7~8 g) were significantly higher than those of the large size(average body weight of 19~20 g).No great differences were found on the respiratory quotient and oxygen-nitrogen ratio of Procambarus clarkii in the same weight level of all salinity groups(P>0.05).However,the respiratory quotient and oxygen-nitrogen ratio of Procambarus clarkii of the large size were significantly higher than those of the small size(P<0.05),whilst the metabolism ratio of the former was considerablely lower than that of the latter(P<0.01).
Keywords:Procambarus clarkii  salinity  body weight  metabolism
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