Amir A. Jabir(1), Kadhim H. Younis (1), Fawzi, M. alkhwaja; Qusay, H. Al-Hamadany (1)*, Ghassan A. Al-Najar(1), Abdul Amer R. Jassim(1)
(1). Department of Marine Vertebrates, Marine Sciences Center, BasrahUniversity , Basrah, Iraq.
(*Corresponding author: Qusay Hamid Al-Hamadany, E-Mail: qusayhamid@yahoo.com).
Received: 12/09/2023 Accepted: 17/10/2023
Abstract:
Different sizes and ages of common carp (Cyprinus carpio), tilapia (Oreochromis niloticus), Aphanius dispar and grass carp (Ctenopharyngodon idella) were exposed to different voltages of alternating current (AC). The small sizes of all types of fish were found to be more resistant to different voltages and more tolerant to the electric current than the large ones. The current study showed a positive relationship between the period of exposure to different voltages with the recovery time of the first fish and the total recovery of all fish. No fish mortality was recorded at voltage 150 for all types of fish. In contrast, the highest percentage of fish mortality was recorded using voltage 220, especially common carp with an average length of (3.3 cm).
Keyword: Fish, Electric fishing, Basrah, Recovery time, Stunning time.
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