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Comparative Studies of Hepatic and Blood Biomarkers in Three Species of Black Sea Elasmobranchs

机译:三种黑海细枝动物肝和血液生物标志物的比较研究

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The investigations of elasmobranchs are very important for the understanding of evolutionary process and mechanisms of fish adaptation. Fishing pressure and global climate changes are affecting elasmobranch population size and structure. Baseline data of these taxa from different locations are useful for the evaluation of their health and for development of the methods of their preservation. In this study Aminotransferases (ALT and AST) activity, oligopeptides, albumin and hemoglobin concentrations were determined in the liver, red blood cells and blood serum of three Black Seaelasmobranch species: Atlantic spiny dogfish Squalus acanthias, buckler skate Raja clavata and stringray Dasyatis pastinaca. Interspecies differences of enzymatic activities depending on fish biology and ecology were shown. Hepatic aminotransferases level and serum oligopeptides concentration were greater in benthic/pelagic active shark, than in benthic sluggish rays. Oligopeptides concentration in red blood cells was the similar in tested elasmobranchs, while serum enzymatic activity and hepatic oligopetides level were higher in R. clavata than in D. pastinaca and S. acanthias inhabiting deeper waters. The results demonstrate that the complex of biochemical characteristics of elasmobranchs together with their ecological specificity can be used to indicate the main strategy of biochemical adaptation of fish evolutionary process.
机译:弹性分支的研究对于理解鱼类适应进化过程和机制非常重要。捕鱼压力和全球气候变化正在影响弹bra种群的规模和结构。来自不同位置的这些分类单元的基线数据对于评估其健康状况和开发其保存方法很有用。在这项研究中,测定了三种黑海鲈的肝脏,红血球和血清中的氨基转移酶(ALT和AST)活性,寡肽,白蛋白和血红蛋白浓度:大西洋多刺的狗鱼角鲨,棘轮Raj Raja clavata和stringray Dasyatis pastinaca。物种间酶活性的差异取决于鱼类的生物学和生态学。底栖/中上生鲨鱼的肝转氨酶水平和血清寡肽浓度高于底栖迟滞射线。在测试的弹性分支中,红细胞中的寡肽浓度相似,而在深水区的蛤仔中的血清酶活性和肝脏寡肽水平高于深粉蝶。和棘皮棘鼠中的。结果表明,弹性分支生物化学特性及其生态学特性的复杂性可用于指示鱼类进化过程的生物化学适应的主要策略。

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