摘要
在盐度12、17、22、27、32、37和pH值5.0、6.0、7.0、8.0、9.0、10.0条件下,采用实验生态学方法,研究了大(L)、中(M)、小(S)3种规格西施舌对耗氧率和排氨率的影响。结果表明:(1)盐度对西施舌耗氧率有显著影响(p<0.05),对排氨率有极显著影响(p<0.01)。当盐度12~22时西施舌的耗氧率随着盐度的增大而上升,并在盐度22时达最大值,之后随盐度的升高而降低;而排氨率在盐度为27时达到最大值,然后随盐度的升高而降低;(2)pH对西施舌的耗氧率和排氨率均有显著影响(p<0.05);随着pH的升高,西施舌的耗氧率和排氨率呈现先升高后降低的趋势,并在pH=8时达最大值后逐渐降低;(3)在相同盐度或pH条件下,各规格西施舌的耗氧率、排氨率均随单位体质量的增大而减小,单位体质量对西施舌耗氧率、排氨率影响极为显著(p<0.01);(4)盐度实验中,3种规格西施舌O∶N比值的变化范围为5.733~7.543,总体上是随着盐度增大呈现先上升后下降的趋势;随着pH的升高,O∶N的变化与盐度变化相似,范围为5.722~6.574,并在pH=7时达到最大值;O∶N随着个体的增大而增加;盐度或pH的变化对西施舌O∶N比值变化不大。
At salinities(12,17,22,27,32 and 37)and acidities(pH5.0,6.0,7.0,8.0,9.0 and 10.0),the effects of large(L),medium(M)and small(S)of C.antiquata on oxygen consumption and ammonia excretion rates were studied with experimental ecological method.The results showed that salinity has a significant effect on the oxygen consumption rate of C.antiquata(p<0.05),and a very significant effect on ammonia excretion rate(p<0.01).Within the salinity range set,the oxygen consumption rate of C.antiquata rised with the increase of salinity when the salinity varied between 12 and 22,and maximized at 22 and decreased with the increase of salinity.The ammonium excretion rate reached its maximum when the salinity was 27,and then decreases with the increase of salinity.Acidity had significant effects on both oxygen consumption rate and ammonia excretion rate of C.antiquata(p<0.05).With the increase of acidity,the oxygen consumption rate and ammonia excretion rate of C.antiquata increased first and then decreased,reached the maximum at pH8,and then decreased gradually.Under the same salinity or acidity,the oxygen consumption rate and ammonium excretion rate of C.antiquata of different specifications decreased with the increase of unit body mass,and unit body mass had a very significant influence on the oxygen consumption rate and the ammonia excretion rate(p<0.01).In the salinity experiment,the O∶N ratio of the three specifications of C.antiquata ranged from 5.733 to 7.543,increasing first and decreasing then with the increase of salinity.With the increase of acidity,the variation of O∶N varied in a similar way of salinity,ranging from 5.722 to 6.574,and reached the maximum at pH 7.The O∶N increased with the increase of individual.The change of salinity or acidity had little effect on O∶N ratio.
作者
罗杰
王中铎
曹伏君
梁李彬
LUO Jie;WANG Zhongduo;CAO Fujun;LIANG Libin(Fishery College/Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animal of Guangdong Higher Education Institute,Guangdong Ocean University,Zhanjiang 524025,China;Caifeng Fishery Professional Cooperative,Zhanjiang Donghai Island Economic Development Zone,Zhanjiang 524074,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2023年第6期100-108,共9页
Transactions of Oceanology and Limnology
基金
中央财政2019年渔业成品油价格补助湛江市级统筹部分资金补助项目(湛财工[2019]152号)。
关键词
西施舌
盐度
PH值
耗氧率
排泄率
coelomactra antiquata
salinity
pH value
oxygen consumption
ammonium excretion
