Age-size structure and growth rate of Barbus strumicae (Cyprinidae) in the Mesta River, Southwest Bulgaria
Kolev V. Guychev G. Mikhailichenko A.
2024Lesotekhnicheski Universitet (University of Forestry)
Forestry Ideas
2024#30Issue 2233 - 243 pp.
The primary objective of this study was to determine the growth parameters of Thracian barbel in the middle zone of the Mesta River within the Aegean basin in Bulgaria. For this purpose, a total of 106 fish were caught and examined. The sample was collected by electrofishing along the Mesta River. Fish age was determined using scalimetry, while length and mass were calculated using scale length-radius and mass-length relationships, respectively. The study identified six age groups, with the majority of the sample comprising two and three-year-old fish. The lengths ranged from 46 mm to 242 mm. Growth analysis was performed by back-calculating the length using the equation L = 3.0858·S+20.759 (r2 = 0.955). Furthermore, a relationship between gutted weight (W) and standard length (L) was established using the equation W = 0.00001∙L2.9799 (r2 = 0.967).
linear growth , size and age composition , Thracian barbel , W-L relation
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Department of Wildlife Management, University of Forestry, 10 St. K. Ohridski Blvd., Sofia, 1797, Bulgaria
IP ‘Ecoexpertservice’, North-Western micro district, 4, Kostanay, 48A, Kazakhstan
Department of Wildlife Management
IP ‘Ecoexpertservice’
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