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Influence of temperature and salinity on the yellowleg shrimp, Penaeuscaliforniensis Holmes, prophenoloxidase system

机译:温度和盐分对黄脚虾,对虾福尔摩斯,酚氧化酶原系统的影响

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摘要

The effects of salinity and temperature on plasma protein concentration and total haemocytic prophenoloxidase (proPO) were determined. Groups of 10 juvenile yellowleg shrimp, Penaeus californiensis Holmes, were acclimated for 20 days at different salinities (28 parts per thousand, 32 parts per thousand, 36 parts per thousand, 40 parts per thousand and 44 parts per thousand at 25 degrees C) or temperatures (18, 22, 25, 28 and 32 degrees C at 36 parts per thousand). While total protein levels were not affected, the quantities of proPO increased as salinity was elevated, Temperature affected both haemolymph parameters, showing a significant decrease in proPO at 32 degrees C, and an increase of protein at 28 and 32 degrees C. These results may help to explain the elevated disease susceptibility of shrimp at higher salinities and/or temperatures.
机译:测定了盐度和温度对血浆蛋白浓度和总血红素前酚氧化酶(proPO)的影响。在25摄氏度下,将10只少年黄腿虾(Penaeus californiensis Holmes)在不同盐度下适应20天(28千分,32千分,36千分,40千分和44千分)。温度(18、22、25、28和32摄氏度,千分之36)。虽然总蛋白水平没有受到影响,但是随着盐度的升高,proPO的数量增加了,温度影响了两个血液淋巴参数,显示32°C时proPO显着降低,而28和32°C时蛋白质增加。这些结果可能有助于解释在较高盐度和/或温度下虾对疾病的敏感性增加。

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