A Biological Study on Reproduction of Barbus lacerta in Tajan River, Northern Iran

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-13 Accepted : 2021-02-13 Published : 2015-08-23

Keywords: Reproductive, Tajan River, Keywords: Kura Barbel, Barbus laserta,

Abstract :

Abstract[1] This study was carried out to examine reproduction characteristics of Kura Barbel, Barbus lacerta from August 2010 to July 2011, in the Tajan River (Northern Iran) using electro-shocker. Totally, 234 specimens were caught. The variables of total length, fork length, standard length, body weight, age, gender, gonad’s weight, egg’s diameter and liver’s weight were measured and recorded. To determine the fish’s age, their scale was used. The total length and weight of males and females were104.23±1.86 (SD) mm and 13.7±1.25 g and 122.18±1.41 (SD) mm and 25.82±1.62g, respectively. Age readings showed that age composed of four age groups of (0+, 1+, 2+ and 3+). The gender ratio of female to male was 1.8 to 1. The egg’s diameter was ranged from 0.08 until 1.08 mm. The mean of ova diameters was 0.54±0.04 mm (SD). Absolute fecundity ranged from 206 to 8689 and mean absolute fecundity was 3876. The mean GSI for males and females was 2.34 (SD) and 2.48 (SD) respectively. Mean condition factor (CF) was estimated 1.12±0.12 (SD) for the males and 1.16±0.15 (SD) for the females. The mean of HIS (hepatic index) was calculated from males and females, 1.16±0.11 (SD) and 1.12±0.12 (SD), respectively. * Corresponding Authors; Email: [e-mail]