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首页> 外文期刊>Journal of Shellfish Research >Effect of diet quality on nutrient allocation to the test and Aristotle's lantern in the sea urchin Lytechinus variegatus (LAMARCK, 1816).
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Effect of diet quality on nutrient allocation to the test and Aristotle's lantern in the sea urchin Lytechinus variegatus (LAMARCK, 1816).

机译：饮食质量对海胆Lytechinus variegatus中测试和亚里士多德灯笼营养成分的影响（LAMARCK，1816年）。

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Small, adult (19.50+or-2.01 g wet weight) Lytechinus variegatus (Lamarck, 1816) were fed 8 formulated diets with different protein (12-36% dry weight as fed) and carbohydrate (21-39% dry weight) levels. Each sea urchin (n=8 per treatment) was fed a daily ration of 1.5% of the average body weight of all individuals for 9 wk. Akaike information criterion (AIC) scores were used to compare 6 different dietary composition hypotheses for 8 growth measurements. For each physical growth response, different mathematical models representing a priori hypotheses were compared using the AIC score. The AIC is one of many information - theoretical approaches that allows for direct comparison of nonnested models with varying numbers of parameters. Dietary protein level and protein:energy ratio were the best models for prediction of test diameter increase. Dietary protein level was the best model of test with spines wet weight gain and test with spines dry matter production. When the Aristotle's lantern was corrected for size of the test, there was an inverse relationship with dietary protein level. Log-transformed lantern to test with spines index was also best associated with the dietary protein model. Dietary carbohydrate level was a poor predictor for growth parameters. However, the protein x carbohydrate interaction model was the best model of organic content (percent dry weight) of the test without spines. These data suggest that there is a differential allocation of resources when dietary protein is limiting and the test, but not the Aristotle's lantern, is affected by availability of dietary nutrients.
机译：小型成年（19.50 +或-2.01 g湿重）百日草（Lamarck，1816）被喂食8种配方饲料，其中蛋白质含量不同（饲料干重为12-36％）和碳水化合物（干重为21-39％）。每天给每个海胆（每次处理n = 8）喂食9周，每天喂食所有个体平均体重的1.5％。使用Akaike信息标准（AIC）得分来比较6种不同的饮食组成假设，以进行8种生长测量。对于每个身体生长反应，使用AIC得分比较代表先验假设的不同数学模型。 AIC是众多信息理论方法之一，可以直接比较具有不同数量参数的非嵌套模型。膳食蛋白质水平和蛋白质：能量比是预测测试直径增加的最佳模型。膳食蛋白质水平是用刺干湿重增加进行测试和用刺干物质产生进行测试的最佳模型。当对亚里士多德的提灯进行校正以进行测试时，它与膳食蛋白质水平呈反比关系。对数转换的灯笼用于测试棘突指数也与膳食蛋白质模型最相关。膳食碳水化合物水平不能很好地预测生长参数。但是，蛋白质x碳水化合物相互作用模型是无刺试验中有机物含量（干重百分比）的最佳模型。这些数据表明，当饮食中的蛋白质受到限制时，会有不同的资源分配，而饮食（而不是亚里士多德的提要）受饮食中营养成分的可用性的影响。

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