Cytological comparison of gill chloride cells and blood serum ion concentrations in kutum (Rutilus frisii kutum) spawners from brackish (Caspian Sea) and fresh water (Khoshkrood River) environments

Q3 Agricultural and Biological Sciences Archives of Polish Fisheries Pub Date : 2014-09-01 DOI:10.2478/aopf-2014-0019

Z. Ghahremanzadeh, J. I. Namin, A. Bani, A. Hallajian

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引用次数: 9

Abstract

Abstract The size and number of chloride cells and serum ion concentrations in kutum, Rutillus frisii kutum Nordman, from brackish (Caspian Sea) and fresh water (Khoshkrood River) environments were studied to gain a better understanding of osmoregulation in this species. Twenty mature kutum specimens were collected from the Caspian Sea (Anzali coasts, 8.49 ppt salinity and 12.4°C temperature) and 20 specimens from Khoshkrood River (0.18 ppt salinity and 18°C temperature). Gill samples were analyzed histologically and concentrations of Na+, Cl- , K+, and Mg2+ ions were determined in the blood serum. Concentrations of Na+, Cl- , K+, and Mg2+ ions and osmotic pressure in mature kutum from brackish water were significantly higher than in specimens from fresh water. The average size and number of chloride cells in the fish from seawater were considerably larger than those from fresh water. The mean size of chloride cells was 6.89 ± 1.16 μm in brackish water samples and 5.1 ± 0.81 μm in river samples. The average number of chloride cells in brackish and river water samples were 16.92 and 6.57, respectively. The density and size of chloride cells increased with increases in salinity

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咸淡水(里海)和淡水(Khoshkrood河)环境中kutum (Rutilus frisii kutum)产卵者鳃氯细胞和血清离子浓度的细胞学比较

摘要研究了来自咸淡水(里海)和淡水(Khoshkrood河)环境的Rutillus frisii kutum Nordman的氯细胞大小、数量和血清离子浓度，以更好地了解该物种的渗透调节机制。在里海(Anzali海岸，盐度为8.49 ppt，温度为12.4℃)和Khoshkrood河(盐度为0.18 ppt，温度为18℃)采集了20个成熟库图姆标本。对鳃标本进行组织学分析，并测定血清中Na+、Cl-、K+和Mg2+离子的浓度。咸淡水成熟骨的Na+、Cl-、K+和Mg2+离子浓度和渗透压显著高于淡水标本。海水鱼体内氯细胞的平均大小和数量明显大于淡水鱼。咸水样品中氯离子细胞的平均大小为6.89±1.16 μm，河流样品中氯离子细胞的平均大小为5.1±0.81 μm。咸淡水和河水中氯离子细胞的平均数目分别为16.92和6.57。氯离子细胞的密度和大小随盐度的增加而增加

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