Abstract
Background. Bassan barbel, Barbus pectoralis Heckel, 1843, is widely distributed in the lakes and river systems of Turkey and its neighbouring countries. Bassan barbel is a fish species of commercial value. The aim of this study was to provide necessary biological features of bassan population from Kemer Reservoir. Materials and methods. Biological aspects of Bassan barbel were studied based on a total of 206 specimens collected from Kemer Reservoir, during the period December 2004–November 2005. The fish age was determined from scales. Length–weight relation and Fulton’s condition factor were used to evaluate fish condition. Results. The fish were from 1 to 6 year-old. Fork length (FL)–weight (W) relations were estimated as W = 0.011 · FL2.980 for all specimens studied. The estimated growth parameters of the von Bertalanffy equation were: L∞ = 34.8 cm, W∞ = 549.58 g, K = 0.168 · year-1 and t0 = -1.590 year for all specimens examined. Conclusion. The fish from Kemer Reservoir were characterized by an average growth rate and it was observed that the specimen grew fast during the first two years of life. The reason why bassan barbel had low condition values is probably because the environmental conditions in the reservoir were poor.
Highlights
Barbus pectoralis Heckel, 1843 is widely distributed in lakes and river systems of the west, south, and southeast Anatolia, Syria, Iran, and Iraq (Coad 1991, Geldiay and Balık 2007)
We provide new information on the age and growth of B. pectoralis from Kemer Reservoir
Özcan and Balık of fish in cm at age t; K is the rate at which the growth curve approaches the asymptote; L∞ is the asymptotic length in cm; and t0 is the theoretical time at which the fish length is zero (Erkoyuncu 1995)
Summary
Barbus pectoralis Heckel, 1843 is widely distributed in lakes and river systems of the west-, south-, and southeast Anatolia, Syria, Iran, and Iraq (Coad 1991, Geldiay and Balık 2007). B. pectoralis can be adapted quite to water regime changes It is a benthopelagic species inhabiting both lentic and lotic environments and it has an economic value since it is commercially fished in reservoirs, lakes, and rivers (Geldiay and Balık 2007). It is a commercially important species in Anatolia because of its wide distribution, its body size (max 40.4 cm, 700.0 g; Çolak 1982) and its tolerance to different environmental regimes. The reason why bassan barbel had low condition values is probably because the environmental conditions in the reservoir were poor
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