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Pakistan Journal of Biological Sciences
  Year: 2005 | Volume: 8 | Issue: 9 | Page No.: 1237-1241
DOI: 10.3923/pjbs.2005.1237.1241
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Growth, Mortality and Yield of Barbel, Barbus plebejus (Bonaparte, 1839) in Almus Dam Lake (Tokat, Turkey)

Mehmet KARATA and M. Fatih CAN

Growth, mortality and yield of Barbel, Barbus plebejus, in Almus Dam Lake (Turkey) were studied. A total of 201 specimens were collected from January 2003 to December 2003. The total length ranged from 15.2 to 41.5 (TL) cm and total weight ranged from 33.7 to 816.5 g. Sex ratio (1: 1.83) was biased towards females (p<0.05). A negative allometric growth was determined in population (p<0.05). The length-weight relationships for all individuals was described by the following parameters: a = 0.036, b = 2.60 with the R2 = 0.83. The population comprised of ten age groups (I to X years). The von Bertalanffy growth parameters for the entire population were: L8= 45.65±1.72 cm, k = 0.249±0.023 1/year and to = -0.711±0.102 year (R2 = 0.89). The growth performance index was 2.71. The mortality rates for whole population were found to be; Z = 0.76 1/year, M = 0.50 1/year and F= 0.26 1/year; and the exploitation rate was E = 0.34 1/year. The Bevarton and Holt model of yield and biomass per-recruit indicated that the stock of B. plebejus in the Almus Dam Lake is not over fished (Emax = 0.92, E0.1 = 0.80 and E0.5 = 0.38).
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How to cite this article:

Mehmet KARATA and M. Fatih CAN , 2005. Growth, Mortality and Yield of Barbel, Barbus plebejus (Bonaparte, 1839) in Almus Dam Lake (Tokat, Turkey). Pakistan Journal of Biological Sciences, 8: 1237-1241.

DOI: 10.3923/pjbs.2005.1237.1241






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