The impact of UDN on selected blood parameters of female sea trout Salmo trutta m. trutta (L.) spawners


  • Mateusz Ciepliński Faculty of Biological Sciences, University of Zielona Góra, 1 Prof. Z. Szafrana Str., 65-516 Zielona Góra, Poland
  • Mariusz Kasprzak Faculty of Biological Sciences, University of Zielona Góra, 1 Prof. Z. Szafrana Str., 65-516 Zielona Góra
  • Monika Grandtke Faculty of Biological Sciences, University of Zielona Góra, 1 Prof. Z. Szafrana Str., 65-516 Zielona Góra
  • Aleksandra Steliga Department of Health Sciences, Pomeranian University of Słupsk, 64 Bohaterów Westerplatte Str., 76-200 Słupsk, Poland
  • Piotr Kamiński 1Faculty of Biological Sciences, University of Zielona Góra, 1 Prof. Z. Szafrana Str., 65-516 Zielona Góra, Poland; 2Department of Medical Biology and Biochemistry, Department of Ecology and Environmental Protection, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 9M. Skłodowskiej-Curie, 85-094 Bydgoszcz, Poland
  • Leszek Jerzak Faculty of Biological Sciences, University of Zielona Góra, 1 Prof. Z. Szafrana Str., 65-516 Zielona Góra, Poland



blood, hematology, sea trout, Ulcerative Dermal Necrosis


Blood tests were performed on 150 females sea trouts Salmo trutta m. trutta L. during four spawning seasons (2014-2017). Fish were caught on a Polish Angling Association trapping point, the Słupia River, Słupsk (northern Poland). The blood for analysis was drawn from caudal vein of 56 healthy and 94 UDN (Ulcerative Dermal Necrosis) - infected females. Fish were divided into three groups: (1) healthy, with no visible signs of UDN, (2) sick, with up to 10% skin damage and (3) agonal, where more than 10% of body surface was infected.

Statistically important decrease in red blood cell count (RBC), hemoglobin concentration (HGB) and hematocrit (HCT) were found between sick and agonal fish groups. Concentration of total plasma protein and albumin decreased, in relation to fish health deterioration. Blood urea nitrogen (BUN) had an inverse proportionality to total plasma protein and albumin concentration. Based on decrease of RBC, HGB and HCT due to UDN symptoms development a decrease in fish condition was observed. Significantly higher urea concentrations observed in agonal fish may indicates respiratory and excretory systems failure.


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How to Cite

Ciepliński , M., Kasprzak , M., Grandtke , M., Steliga , A., Kamiński, P., & Jerzak , L. (2018). The impact of UDN on selected blood parameters of female sea trout Salmo trutta m. trutta (L.) spawners. Annales Universitatis Paedagogicae Cracoviensis Studia Naturae, 3(2), 7–16.




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