Author(s): Hallajian Ali, Kazemi Rezvan and Moghadam Khadivinia Majid

Abstract: This study examines certain ionic parameters including calcium, sodium, potassium, phosphor, and magnesium and metabolic factors such as cholesterol, total protein, albumin and osmolality in the blood serum of 34 premature wild Persian Sturgeon (Acipenser persicus) caught by trawl nets in the Caspian Sea (Guilan coastal waters). The fish were divided into three weight groups: (below 100gr), G2 (100-500gr) and G3 (+500gr). The results indicated statistically meaningful differences across varying weight groups in terms of magnesium, calcium potassium and phosphor ion concentrations (P≤0.5), whereas sodium ions failed to show any statistically meaningful difference (P≤0.5) across groups. The first group (G1) contained higher rates of magnesium and calcium ions compared to other groups. The metabolic factors including osmolarity, cholesterol and albumin showed no significant difference but the total protein in G1 was significantly higher than G2 (P≤0.5) reflecting no statistical difference with other groups (P≥0.5). The cholesterol and total protein concentrations in G3 were at its highest level with albumin that was at the lowest level. Based on the results obtained, it can be concluded that fish of lower than 100gr were more sensitive to their environment than those of the other groups. Thus in examining the health status of Acipenser persicus, the link between the ions and the metabolic factors could be considered in their growth, reproduction and regulation of osmotic pressure with a view to diagnose pathogens and upgrade sturgeon fisheries in the Caspian Sea.

Pages: 195-200  |  700 Views  77 Downloads

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