水产学报2007，Vol.31Issue(1)：31-37,7.
流速、温度对西伯利亚鲟幼鱼生长的影响
Effect of water current and temperature on growth of juvenile Acipenser baeri
摘要
Abstract
Effect of water current and temperature on growth of juvenile sturgeon Acipenser baeri in intensive indoor (semi-recirculating) tank culture was investigated in a 90-day rearing trial. Fish were reared in continuous water current with three levels of velocity of 0.12(V1), 0.16(V2) and 0.20 m·s-1(V3) respectively, and isochronic water current (in half an hour with a velocity of 0.20 m·s-1, then in the next half an hour of intermission with a velocity of 0 m·s-1)(V4), under water temperature varying between 13.8 ℃ and 24.7 ℃. Within a range of water temperature of 16.7 - 22.5 ℃, growth efficiency (GE) and daily growth rate (DGR) increased with the increase of velocity of water current, and maximum DGR occurred in V3 group. There was significant positive linear relation between GE and V: GE＝52.5 V + 69.567 (R2 = 0.997, P＜ 0.05), when the velocity of water current ranged from 0.12 m·s-1 to 0.20 m·s-1. In contrast, within a range of water temperature of 13.8 - 16.7 ℃ or 22.5 - 24.7 ℃, DGR of V3 group were lower than that of V1 and V2 groups. Fish in the group with intermission of non-water current obtained the highest GE while lowest FCR at a water temperature of 20.7 ℃. It suggested that water current and water temperature have reciprocal effect on the growth of juvenile sturgeon A. baeri. The fish has different optimal water temperatures at different velocity of water currents, and the optimum temperatures are between 20.2 ℃ and 20.7 ℃.This result suggests that group V4 is the best among these groups that can produce better economic benefits.关键词
西伯利亚鲟/生长/集约化养殖/流速/温度Key words
Acipenser baeri/growth/intensive indoor (semi-recirculating) tank culture/current/temperature分类
农业科技引用本文复制引用
黄宁宇,程起群,高露娇,么宗利,夏连军..流速、温度对西伯利亚鲟幼鱼生长的影响[J].水产学报,2007,31(1):31-37,7.基金项目
上海市科技兴农重点攻关项目(沪农科推字2004第1-5-5) Supported by grants from Shanghai Agriculture Committee (2004-1-5-5) （沪农科推字2004第1-5-5）
