摘要
文章采用实验生态学方法探究了水温、光周期和光照强度对塔里木裂腹鱼(Schizothorax biddulphi)幼鱼存活、摄食和生长的影响,使用Box-Benhnken实验设计法预测幼鱼最佳生长环境条件,并通过单因子静态毒性急性实验法对其盐碱耐受能力进行了研究。结果显示,水温5~25℃时幼鱼成活率均在85%以上;水温20℃时摄食率、体长增长率和特定生长率达到最高;光周期16 L∶8 D或光照强度500 lx时,各水平均达到最高;水温12.98℃、每天光照15.07 h、光照强度670.27 lx时,幼鱼达到理论最佳存活、摄食、生长条件;幼鱼24、48、72和96 h的氯化钠(NaCl)盐度半致死浓度(LC50)分别为4.01、3.62、3.29和2.92 g·L^(−1),安全浓度(SC)为0.89 g·L^(−1);24、48、72和96 h碳酸氢钠(NaHCO3)碱度LC50分别为97.14、86.75、80.26和74.52 mmol·L^(−1),SC为20.75 mmol·L^(−1)。
In this paper,we investigated the effects of water temperature,photoperiod and light intensity on the survival,feeding and growth of Schizothorax biddulphi juveniles by using experimental ecological methods;predicted the optimal growth conditions for the juveniles by Box-Benhnken design;and studied the saline alkali tolerance of juveniles by single factor static toxicity acute test. The results show that the survival rate of the juveniles was above 85% at 5−25 ℃. The feeding rate, length growth rate and specific growth rate reached the maximum values at 20 ℃. When the photoperiod was 16 L∶8 D and the light intensity was 500 lx, all the indices of the juveniles reached the maximum values. Under conditions of water temperature of 12.98 ℃, daily light time of 15.07 h and light intensity of 670.27 lx, the best survival, feeding and growth were obtained. The LC50 of NaCl salinity was 4.01, 3.62, 3.29 and 2.92 g·L^(−1) at 24, 48, 72 and 96 h, respectively, and the safety concentration (SC) was 0.89 g·L^(−1). The LC50 of NaHCO3 alkalinity was 97.14, 86.75, 80.26 and 74.52 mmol·L^(−1) at 24, 48, 72 and 96 h, respectively, and the SC was 20.75 mmol·L^(−1).
作者
赵年桦
赵贺
强壮
聂竹兰
魏杰
沈建忠
ZHAO Nianhua;ZHAO He;QIANG Zhuang;NIE Zhulan;WEI Jie;SHEN JianZhong(College of Animal Sciences,Tarim University,Aral City 843300,China;Key Laboratory of Tarim Animal Husbandry Science and Technology,Xinjiang Production&Construction,Aral City 843300,China;College of Life Sciences,Tarim University,Aral City 843300,China;Tarim Rare Fish Reserrch Center,Aral City 843300,China;College of Fisheries,Huazhong Agricultural University,Wuhan 430072,China)
出处
《南方水产科学》
CAS
CSCD
北大核心
2021年第5期54-63,共10页
South China Fisheries Science
基金
国家自然科学基金项目(31560721,31860729)
新疆生产建设兵团中青年科技创新领军人才计划项目(2018CB033)
自治区研究生科研创新项目(TDGRI201918)
中国海洋大学塔里木大学科研合作联合基金项目(ZHYLH201902)
华中农业大学塔里木大学科研合作联合基金项目(TDHNLH201702,2662017PY118)。
关键词
塔里木裂腹鱼
环境因子
成活率
摄食率
生长
盐碱耐受能力
Schizothorax biddulphi
Environmental factor
Survival rate
Feeding rate
Growth
Tolerance of salinity and alkalinity
作者简介
赵年桦(1997-),女,硕士研究生,研究方向为水生生物资源与保护利用。E-mail:591217996@qq.com;通信作者:聂竹兰(1979-),女,博士,教授,从事水生生物资源与保护利用、特殊资源动物研究。E-mail:niezhl2004@126.com。
