The effects of temperature and salinity on the swimming ability of whiteleg shrimp, Litopenaeus vannamei
文献类型: 外文期刊
第一作者: Zhang, Peidong
作者: Zhang, Peidong;Zhang, Xiumei;Li, Jian;Huang, Guoqiang
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关键词: shrimp;Litopenaeus vannamei;swimming ability index;swimming endurance;swimming speed;power model;temperature;salinity;TROUT ONCORHYNCHUS-MYKISS;JUVENILE RAINBOW-TROUT;CLUPEA-HARENGUS L;COD GADUS-MORHUA;LOCOMOTOR PERFORMANCE;EXHAUSTIVE EXERCISE;OXYGEN-CONSUMPTION;THERMAL-DEPENDENCE;AMMONIA EXPOSURE;ATLANTIC SALMON
期刊名称:COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY ( 影响因子:2.32; 五年影响因子:2.465 )
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收录情况: SCI
摘要: Swimming endurance of whiteleg shrimp, Litopenaeus vannamei exposed to various temperatures (15, 20, and 25 degrees C and salinities (15, 32, and 40 parts per thousand) was determined in a swimming channel against one of five flow velocities (5.41, 6.78, 8.21, 10.11, and 11.47 cm s(-1)) for up to 9000 s. No shrimp swam the full 9000 s throughout the experiment. The swimming endurance decreased as swimming speed was increased at any of the temperatures and salinities tested and was significantly affected by temperature and salinity (P < 0.05). The power model (nu.t(b)=a) showed a better fit to the relationship between swimming endurance (t, in s) and swimming speed (nu, in cm s(-1)) at any of the temperatures and salinities tested. The swimming ability index (SAI), defined as SAI = integral(9000)(0) vdt x 10(-4) (cm), was found to be temperature- and salinity-dependent in L. vannamei. The optimum temperature and salinity and corresponding maximum SAI were Topt=21.3 degrees C and SAI(max21.3)=7.37 cm; Sopt=27.6 parts per thousand and SAI(max27.6)=7.47 cm, respectively. The range of temperatures and salinities within which SAI is > 90% of the maximum was estimated between 17.6 and 24.9 degrees C and between 18.5 and 36.7 parts per thousand, respectively. The results suggest that the power model fits well to the observed endurance estimates and the SAI is a good index to quantitatively describe the overall swimming ability of L. vannamei. Furthermore, temperature and salinity can limit the swimming performance of L. vannamei. (c) 2006 Elsevier Inc. All rights reserved.
分类号: Q4
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