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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Population Growth and Protein and Energy Content of Proales Similis (Rotifera: Monogononta) Reared at Different Salinities
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Population Growth and Protein and Energy Content of Proales Similis (Rotifera: Monogononta) Reared at Different Salinities

机译：在不同盐度下繁殖的拟小穗菜的种群生长以及蛋白质和能量含量

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摘要

The effect of different salinities on growth, crude protein and total energy on a Mexican strain of the minute rotifer Proales similis (GenBank KM078762) were evaluated. The experiment was conducted at 5, 15, 25 and 35 psu, with five replicates. Rotifers were fed twice a day with Nannochloropsis sp., temperature, dissolved oxygen and pH values were maintained at 25±1 °C, 5±1 mg L-1 and 8±1 respectively. Results show that salinity does not affect the intrinsic rate of population growth (r=0.46 to 0.51 day-1) and duplication time (Dt=1.36 to 1.51 days) for P. similis. Maximum density (Dmax) values were lower at 35 psu (1,703 rotifers mL-1), whereas Dmax values were between 2,488 to 2,560 rotifers mL-1 at 5, 15 and 25 psu. Crude protein fluctuated between 25.3 and 42.8% dry biomass (DB), while energy content varied between 11.8 and 19.9 J mg-1 DB; values were significantly lower at 35 psu. Observed population growth parameters and the protein and energy content between 5-25 psu, indicate that P. similis can be successfully reared below 35 psu, making P. similis very suitable when fish larvae require a small rotifer due to sizing of mouth gap at the beginning of exogenous feeding.
机译：评估了不同盐度对微小轮虫Proales similis（GenBank KM078762）墨西哥菌株的生长，粗蛋白和总能量的影响。实验在5、15、25和35 psu下进行，一式五份。轮虫每天用Nannochloropsis sp。饲喂两次，温度，溶解氧和pH值分别保持在25±1°C，5±1 mg L-1和8±1。结果表明，盐度不影响拟南芥的种群内在增长率（r = 0.46至0.51天-1）和复制时间（Dt = 1.36至1.51天）。最大密度（Dmax）值在35 psu（1,703轮虫mL-1）较低，而Dmax值在5、15和25 psu时在2,488至2,560轮虫mL-1之间。粗蛋白在25.3％至42.8％的干燥生物量（DB）之间波动，而能量含量在11.8至19.9 J mg-1 DB之间变化。值在35 psu时显着降低。观察到的种群增长参数以及5-25 psu之间的蛋白质和能量含量表明，在35 psu以下可以成功地繁殖拟体，因此当鱼幼体由于口间隙的大小而需要小轮虫时，拟P体非常合适。开始外来喂养。

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