SOME BIOLOGICAL ASPECTS OF Carassius auratus IN GREATER ZAB RIVER IN THE KURDISTAN REGION- IRAQ

Nuha Al-Muffti; Shamall Abdullah

doi:10.56286/NTU-JAVS.2026.6.3.258-264

Authors

Nuha S. A. Almuffti Fish health and production department, College of Agricultural Engineering Science, Salahaddin University-Erbil, Iraq. https://orcid.org/0009-0005-4943-3178
Shamall M.A. Abdullah Fish health and production department, College of Agricultural Engineering Science, Salahaddin University-Erbil, Iraq. https://orcid.org/0000-0003-3952-9166

DOI:

https://doi.org/10.56286/NTU-JAVS.2026.6.3.258-264

Keywords:

Carassius auratus, Condition factor, GSI, Growth, Length-weight relationship.

Abstract

A study of some biological and environment aspects of Carassius auratus in the Greater Zab River was conducted during December (2022) and November (2023). Temperature values ranged between (8.9-28.9) C0, as pH ranged between (7.1-8.2), dissolved oxygen ranged between (7.1-12.6) mg/L, salinity recorded (0.22-0.41) g/L, transparency (16-61) cm and water current speed (23-43) cm/s. (152) samples have been collected, their lengths ranged between (110 – 242) mm and weights 28.4 - 247.6 g. The growth pattern of length-weight relationship showed that it had a positive tendency Allometric with (b) values was 93.145). The total condition factor was (1.621), while in females and males was (1.66, 1.58) respectively. The sex ratio was (1:1.11) favouring females. The highest GSI in males was (2.67) recorded in March, and the lowest was (0.29) in August, while the highest value for females reached (9.32) recorded in May and the lowest was (1.19) in August. The results showed that the waters of Greater Zab River were suitable for Carassius auratus growth and reproduction.

Author Biographies

Nuha S. A. Almuffti, Fish health and production department, College of Agricultural Engineering Science, Salahaddin University-Erbil, Iraq.

I graduated with a Bachelor's degree in Agricultural Sciences, Animal Resources Department, Since 1999-2000I, then appointed in 2001 at the Faculty of Agricultural Engineering as an employee in the same department. I Received a master's degree in animal sciences in 2007. I was also got the scientific title as assistant lecturer in the same year. I am currently a PhD student.
Shamall M.A. Abdullah, Fish health and production department, College of Agricultural Engineering Science, Salahaddin University-Erbil, Iraq.

I graduate from Mosul University in 1985 (Ranked 6th in collage). In 1990 I finished my M.Sc. degree in Salahaddin University, and start as Assistant Lecturer, in Parasitology, Department of Biology, College of Education, Salahaddin University, teaching practical Parasitology, invertebrate, Zoology and Chordate. In 2002 I finished my PhD degree in in Parasitology, Department of Biology, College of Education (Ibn Al-Haitham), University of Baghdad, Iraq. In 2010 Professor of Fish Parasitology. Department of Biology, College of Education, University of Slahaddin, Iraq.In 2014 Professor of Fish Parasitology. Department of Fish Resource and Aquatic Animal, College Agriculture, University Salahaddin- Erbil- Iraq.

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SOME BIOLOGICAL ASPECTS OF Carassius auratus IN GREATER ZAB RIVER IN THE KURDISTAN REGION- IRAQ

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SOME BIOLOGICAL ASPECTS OF Carassius auratus IN GREATER ZAB RIVER IN THE KURDISTAN REGION- IRAQ

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