Regulasi osmotik dan nilai hematokrit ikan nila Oreochromis sp pada medium dengan salinitas dan temperatur air berbeda

Journal of Biological Researches Pub Date : 2012-10-17 DOI:10.23869/BPHJBR.18.1.20129

Untung Susilo, Wahyu Meilina, S. Simanjuntak

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引用次数: 2

Abstract

Osmotic regulation and blood hematocrite of nile, Oreochromis sp., have been evaluated as response to different salinity and water temperature. Three different salinities (0 ppt, 10 ppt and 20 ppt) in combination with two different water temperatures (26 ° C and 30 ° C) have been applicated in this experiment. Fish with average body weight 28.3 ± 2.62 g were used ini this experiment. The result showed that plasma osmolality of nile in freshwater have not different with in 10 ppt (P > 0.05), but plasma osmolality increased at 20 ppt especially at 8,16 and 24 hours after aclimated on 20 ppt. Osmoregulatory capacity has signi ﬁ cant heigher (P < .05) on nile in freshwater than in water with salinity 10 ppt and 20 ppt. Body water content and blood hematocrite were not signi ﬁ cant between different salinity and water temperature (P > .05). Conclution, osmotic regulation of nile showed signi ﬁ cant different between salinity treatment, but blood hematocrite only changed at 8,and16 hours after nile aclimated on water salinity 20 ppt and body water content not changed at both diferent salinity and water temperature.

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渗透性调节和偏光性鱼类sp的血红素含量与盐度和水温不同

研究了尼罗河对不同盐度和水温的渗透调节和血细胞比容。本实验采用了三种不同的盐度(0 ppt、10 ppt和20 ppt)和两种不同的水温(26°C和30°C)。试验鱼的平均体重为28.3±2.62 g。结果表明，淡水中尼罗河的血浆渗透压与10 ppt时无显著差异(P > 0.05)，但20 ppt时血浆渗透压升高，特别是在20 ppt后8、16和24小时。淡水中尼罗河的渗透调节能力显著高于盐度为10 ppt和20 ppt的水(P < 0.05)。不同盐度和水温对体含水量和血液红细胞压积的影响不显著(P > 0.05)。结论:不同盐度处理对尼罗的渗透调节无显著差异，但在水盐度为20 ppm时，尼罗仅在8、16 h时发生血液红细胞压差变化，而在不同盐度和水温下，体内含水量均无变化。

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来源期刊

Journal of Biological Researches

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审稿时长

12 weeks