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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Effects of Stocking Density on Blood Cortisol, Glucose and Cholesterol Levels of Immature Siberian Sturgeon (Acipenser baerii Brandt, 1869)
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Effects of Stocking Density on Blood Cortisol, Glucose and Cholesterol Levels of Immature Siberian Sturgeon (Acipenser baerii Brandt, 1869)

机译：放养密度对未成熟西伯利亚St鱼血液皮质醇，葡萄糖和胆固醇水平的影响（Acipenser baerii Brandt，1869年）

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摘要

Siberian sturgeon (Acipenser baerii Brandt, 1869) is a suitable species for aquacultural purposes. This study was conducted to investigate the influence of stocking density on blood parameters of cultured immature Siberian sturgeon introduced to Iranian aquaculture systems, in order to monitor crowding stress. Two-year old juvenile fish (weight 607.7 +/- 21.49 g, total length: 68 +/- 9.46 cm [mean +/- SE]) were reared at low, moderate and high densities (6, 12 and 18 fish 250 L-1, respectively) for 5 months. Cortisol, glucose and cholesterol concentration of blood plasma were measured four times during the experiment (July, August, October and November 2008). The present study indicated that (1) density had no significant effect of blood cortisol, glucose and cholesterol concentration in A. baerii (cortisol: 7.8-13.1, cholesterol: 115.6-133.9, glucose: 41.4-46.8 ng ml(-1)[range]) (2) a significant increase in cortisol concentration of all densities was found in August which was related to water temperature rise (23.75 +/- 2.69 in August vs 7.09 +/- 1.16 ng ml(-1) for other months [mean +/- SE]). Therefore, it seems that the Siberian sturgeon is not sensitive species against rearing density in aquaculture systems. Further investigation on critical density and factors that change tolerability to high density are needed to be addressed.
机译：西伯利亚st（Acipenser baerii Brandt，1869）是适合水产养殖的物种。这项研究旨在调查放养密度对引入伊朗水产养殖系统的未成熟西伯利亚ian鱼血液参数的影响，以监测拥挤压力。以低，中和高密度饲养两岁幼鱼（体重607.7 +/- 21.49 g，总长度：68 +/- 9.46 cm [平均+/- SE]）（6、12和18条鱼250 L -1），持续5个月。在实验期间（2008年7月，8月，10月和11月）对血浆的皮质醇，葡萄糖和胆固醇浓度进行了四次测量。本研究表明（1）密度对拟南芥中的血液皮质醇，葡萄糖和胆固醇浓度没有显着影响（皮质醇：7.8-13.1，胆固醇：115.6-133.9，葡萄糖：41.4-46.8 ng ml（-1）[范围]）（2）8月发现所有密度的皮质醇浓度均显着增加，这与水温升高有关（8月为23.75 +/- 2.69 ng，其他月份为7.09 +/- 1.16 ng ml（-1）[平均值+/- SE]）。因此，看来西伯利亚st鱼对水产养殖系统中的饲养密度不敏感。需要解决对临界密度和将耐受性改变为高密度的因素的进一步研究。

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