Evaluating the Chromosomal Aberration Frequency by Electrofishing on Poecilia latipinna (Sailfin Molly) Fishes in Southern of Iraq

In recent years, chromosomal studies have drawn a lot of attention. The current research address theChromosomal aberration effects of electrofishing, which were evaluated on Poecilia latipinna, located in Shat Al-Arab river in Al-garmma city , Iraq. The electrofishing method utilised at work is a replica of the one employed in commercial fishing. The device can produce voltage between 40 and 280 volts. In a chromosomal investigation, nine carriers of the sailfin molly fish Poecilia latipinna were separated into three groups. The fish in the second group were subjected to 110 volts for 10 seconds, and the fish in the third group were also exposed to 110 volts (15 seconds). In the somatic cell kidney tissue of Poecilia latipinna, the mitotic index of the electrofishing with a control for each group declined with increasing exposure duration. The analysis of chromosome aberrations showed a significant increase in the most common aberration per 150 metaphase in the analysed groups (1.33 in T1 groups and 39.33 in T2 groups), which was chromosome break, fragment, range chromosome, and sticky chromosome mean, and was higher in comparison to non-exposed electrical shock fishing groups (control groups T1). While all fish died in the T3 groups, it also exhibited a larger positive correlation of overall chromosome aberration frequencies between the T1 and T2 groups.