不同养殖密度对长江鲟稚鱼生长的影响
|
摘要
为了解不同养殖密度对长江鲟(Acipenser dabryanus)稚鱼生长的影响,设置初始密度为0.27(D 200)、0.46(D 350)、0.66(D 500)和0.87(D 650)kg/m2的4种养殖密度,对初始体重3.38 g和体长7.79 cm的2月龄长江鲟稚鱼进行4周的养殖实验。结果表明:养殖密度对体重、体长、变异系数(CV)、日增重(DWG)、净增重(NY)、特定生长率(SGR)和饵料系数(FCR)有显著影响,对存活率和肥满度无显著影响;D 200组的生长速度最快,与D 350组差异不显著,D 650组生长速度最慢;D 200组的体重、体长、特定生长率、日增重均最大,与D 350组无显著差异,但D 350组的变异系数和饵料系数均较D 200组要小;特定生长率与养殖密度(D)呈负相关关系:SGR=-1.171 5D+6.331 5(R2=0.484 5);变异系数与养殖密度呈正相关关系:CV=3.989 1D+13.533(R2=0.480 5)。此阶段长江鲟稚鱼最适养殖密度为D350(0.46 kg/m~2)。
To investigate the effect of different stocking densities on growth of Acipenser dabryanus juveniles,the 2 months old juvenile A. dabryanus with initial body weight and length of 3. 38 g and 7. 79 cm were stocked at four different densities for 4 weeks,which were 0. 27( D200),0. 46( D350),0. 66( D500) and 0. 87( D650) kg/m2,respectively. The results showed that the body weight,length,coefficient of variation( CV),daily weight gain( DWG),net yield( NY),special growth rate( SGR) and feed conversion rate( FCR) of A. dabryanus juveniles in these four groups were dramatically affected,whereas the survival rate and conditional factor were not significantly affected. The growth of A. dabryanus juveniles in D200 group was optimal in growth rate,following by D350 group,D500 group and D650 group. The body weight,length,DWG,NY,and SGR of A. dabryanus juveniles in D200 group were the highest in the four groups,however,there was no significant difference between D200 group and D350 group. Compared with the D200 group and the D350 group,the CV and FCR of A. dabryanus juveniles in D350 group were lower than that in D200 group. A negative correlation between SGR and stocking density( D) was shown as SGR =-1. 171 5 D + 6. 331 5( R2= 0. 484 5). Meanwhile,a positive correlation between CV and Dwas shown as CV = 3. 989 1 D + 13. 533( R2= 0. 480 5). The optimal stocking density of A. dabryanus juveniles in this growth period was D350( 0. 46 kg/m2).
To investigate the effect of different stocking densities on growth of Acipenser dabryanus juveniles,the 2 months old juvenile A. dabryanus with initial body weight and length of 3. 38 g and 7. 79 cm were stocked at four different densities for 4 weeks,which were 0. 27( D200),0. 46( D350),0. 66( D500) and 0. 87( D650) kg/m2,respectively. The results showed that the body weight,length,coefficient of variation( CV),daily weight gain( DWG),net yield( NY),special growth rate( SGR) and feed conversion rate( FCR) of A. dabryanus juveniles in these four groups were dramatically affected,whereas the survival rate and conditional factor were not significantly affected. The growth of A. dabryanus juveniles in D200 group was optimal in growth rate,following by D350 group,D500 group and D650 group. The body weight,length,DWG,NY,and SGR of A. dabryanus juveniles in D200 group were the highest in the four groups,however,there was no significant difference between D200 group and D350 group. Compared with the D200 group and the D350 group,the CV and FCR of A. dabryanus juveniles in D350 group were lower than that in D200 group. A negative correlation between SGR and stocking density( D) was shown as SGR =-1. 171 5 D + 6. 331 5( R2= 0. 484 5). Meanwhile,a positive correlation between CV and Dwas shown as CV = 3. 989 1 D + 13. 533( R2= 0. 480 5). The optimal stocking density of A. dabryanus juveniles in this growth period was D350( 0. 46 kg/m2).
引文
[1]Zhuang P,Ke F,Wei Q W,et al.Biology and life history of Dabry's sturgeon,Acipenser dabryanus,in the Yangtze River[J].Environ Biol Fish,1997,48(1):257-264.
[2]Zhang H,Wei Q W,Du H,et al.Present status and risk for extinction of the Dabry’s sturgeon(Acipenser dabryanus)in the Yangtze River watershed:a concern for intensified rehabilitation needs[J].J Appl Ichthyol,2011,27(2):181-185.
[3]史玲玲,危起伟,柴毅,等.达氏鲟视网膜早期发育及其相关机能[J].中国水产科学,2013,20(5):958-967.
[4]张磊,危起伟,张书环,等.饲料蛋白水平对达氏鲟幼鱼生长性能、体组成、消化酶活性以及血液生化指标的影响[J].淡水渔业,2016,46(6):79-85.
[5]单喜双,岳华梅,陈细华,等.达氏鲟生长激素基c DNA克隆、表达及免疫荧光定位研究[J].水生生物学报,2015,39(2):307-314.
[6]杜浩,冷小茜,张书环,等.达氏鲟gdf11基因c DNA的克隆及组织表达特征分析[J].淡水渔业,2017,47(1):30-34.
[7]Wu J M,Wei Q W,Du H,et al.Initial evaluation of the release programme for Dabry's sturgeon(Acipenser dabryanus Duméril,1868)in the upper Yangtze River[J].J Appl Ichthyol,2015,30(6):1423-1427.
[8]Zeng Q,Ye H,Ludwig A,et al.Microsatellite development for the endangered Yangtze sturgeon(Acipenser dabryanus Duméril,1869)using 454 sequencing[J].J Appl Ichthyol,2013,29(6):1219-1221.
[9]Ye H,Yue H M,Yang X G,et al.Identification and sexually dimorphic expression of vasa isoforms in Dabry's sturgeon(Acipenser dabryanus),and functional analysis of vasa 3'-untranslated region[J].Cell Tissue Res,2016,366(1):1-16.
[10]颉璇,厉萍,席萌丹,等.达氏鲟精巢细胞消化分离和超低温冷冻保存[J].淡水渔业,2016,46(5):19-24.
[11]何斌,陈先均,杜军,等.人工养殖条件下达氏鲟生长特性的研究[J].西南农业学报,2011,24(1):335-339.
[12]杜军,赵刚,龚全,等.达氏鲟亲鱼池塘人工培育试验[J].西南农业学报,2009,22(3):824-827.
[13]Simth H T,Schreck C B,Maughan O E.Effect of population density and feeding rate on the fathead minnow(Pimephales promelas)[J].J Fish Biol,1978,12(5):449-455.
[14]庄平,李大鹏,王明学,等.养殖密度对史氏鲟稚鱼生长的影响[J].应用生态学报,2002,13(6):735-738.
[15]Suresh A V,Lin C K.Effect of stocking density on water quality and production of red tilapia in a recirculated water system[J].Aquacult Eng,1992,11(1):1-22.
[16]Iguchi K,Ogawa K,Nagae M,et al.The influence of rearing density on stress response and disease susceptibility of ayu(Plecoglosses altivelis)[J].Aquaculture,2003,220(1-4):515-523.
[17]宋志飞,温海深,李吉方,等.养殖密度对流水养殖系统中俄罗斯鲟幼鱼生长的影响[J].水产学报,2014,38(6):835-842.
[18]刘晓勇,齐茜,王国峰,等.养殖密度对饲料驯化期西伯利亚鲟生长的影响[J].淡水渔业,2012,42(5):79-82.
[19]Honer G,Rosenthal H,Kruner G.Growth of juvenile Sarotherodon galilaeusin laboratory aquaria[J].Aqua Trop,1987,2(1):59-71.
[20]Even H J,Malcom J.Feeding in darkness eliminates densitydenpendent growth suppression in Arctic charr[J].Aquacult Int,1993,1(1):90-93.
[21]邹雄,章珍龙,张涛,等.养殖密度对点篮子鱼生长性能的影响[J].水产科学,2013,32(10):601-604.
[22]Tort L,Balasch J C,Mac Kenzie S.Fish health challenge after stress.Indicators of immuno competence[J].Contrib Sci,2004,2(4):443-454.
[2]Zhang H,Wei Q W,Du H,et al.Present status and risk for extinction of the Dabry’s sturgeon(Acipenser dabryanus)in the Yangtze River watershed:a concern for intensified rehabilitation needs[J].J Appl Ichthyol,2011,27(2):181-185.
[3]史玲玲,危起伟,柴毅,等.达氏鲟视网膜早期发育及其相关机能[J].中国水产科学,2013,20(5):958-967.
[4]张磊,危起伟,张书环,等.饲料蛋白水平对达氏鲟幼鱼生长性能、体组成、消化酶活性以及血液生化指标的影响[J].淡水渔业,2016,46(6):79-85.
[5]单喜双,岳华梅,陈细华,等.达氏鲟生长激素基c DNA克隆、表达及免疫荧光定位研究[J].水生生物学报,2015,39(2):307-314.
[6]杜浩,冷小茜,张书环,等.达氏鲟gdf11基因c DNA的克隆及组织表达特征分析[J].淡水渔业,2017,47(1):30-34.
[7]Wu J M,Wei Q W,Du H,et al.Initial evaluation of the release programme for Dabry's sturgeon(Acipenser dabryanus Duméril,1868)in the upper Yangtze River[J].J Appl Ichthyol,2015,30(6):1423-1427.
[8]Zeng Q,Ye H,Ludwig A,et al.Microsatellite development for the endangered Yangtze sturgeon(Acipenser dabryanus Duméril,1869)using 454 sequencing[J].J Appl Ichthyol,2013,29(6):1219-1221.
[9]Ye H,Yue H M,Yang X G,et al.Identification and sexually dimorphic expression of vasa isoforms in Dabry's sturgeon(Acipenser dabryanus),and functional analysis of vasa 3'-untranslated region[J].Cell Tissue Res,2016,366(1):1-16.
[10]颉璇,厉萍,席萌丹,等.达氏鲟精巢细胞消化分离和超低温冷冻保存[J].淡水渔业,2016,46(5):19-24.
[11]何斌,陈先均,杜军,等.人工养殖条件下达氏鲟生长特性的研究[J].西南农业学报,2011,24(1):335-339.
[12]杜军,赵刚,龚全,等.达氏鲟亲鱼池塘人工培育试验[J].西南农业学报,2009,22(3):824-827.
[13]Simth H T,Schreck C B,Maughan O E.Effect of population density and feeding rate on the fathead minnow(Pimephales promelas)[J].J Fish Biol,1978,12(5):449-455.
[14]庄平,李大鹏,王明学,等.养殖密度对史氏鲟稚鱼生长的影响[J].应用生态学报,2002,13(6):735-738.
[15]Suresh A V,Lin C K.Effect of stocking density on water quality and production of red tilapia in a recirculated water system[J].Aquacult Eng,1992,11(1):1-22.
[16]Iguchi K,Ogawa K,Nagae M,et al.The influence of rearing density on stress response and disease susceptibility of ayu(Plecoglosses altivelis)[J].Aquaculture,2003,220(1-4):515-523.
[17]宋志飞,温海深,李吉方,等.养殖密度对流水养殖系统中俄罗斯鲟幼鱼生长的影响[J].水产学报,2014,38(6):835-842.
[18]刘晓勇,齐茜,王国峰,等.养殖密度对饲料驯化期西伯利亚鲟生长的影响[J].淡水渔业,2012,42(5):79-82.
[19]Honer G,Rosenthal H,Kruner G.Growth of juvenile Sarotherodon galilaeusin laboratory aquaria[J].Aqua Trop,1987,2(1):59-71.
[20]Even H J,Malcom J.Feeding in darkness eliminates densitydenpendent growth suppression in Arctic charr[J].Aquacult Int,1993,1(1):90-93.
[21]邹雄,章珍龙,张涛,等.养殖密度对点篮子鱼生长性能的影响[J].水产科学,2013,32(10):601-604.
[22]Tort L,Balasch J C,Mac Kenzie S.Fish health challenge after stress.Indicators of immuno competence[J].Contrib Sci,2004,2(4):443-454.