Seasonal variation and some biological aspects of Tilapia (Oreochromis aureus) in the Eastern Drain / Salah Al – deen / Iraq | ||
| Kirkuk University Journal For Agricultural Sciences | ||
| Article 3, Volume 11, Issue 2, Spring 2020, Page 23-29 PDF (854 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.58928/ku20.11203 | ||
| Authors | ||
| Saddam Mohammed Hassan; Nehad Khorshid Wahab | ||
| Tikrit University /Agriculture College/ Animal Production Department | ||
| Abstract | ||
| The fish samples collected by electric fishing trap from march till December 2018 from the Eastern drain / Salah Al –deen , Iraq. Some biological aspects and seasonal variation of Tilapia (Oreochromis aureus) were studied. The relationship between the total length and weight for all seasons were (semi - Isometric) with value of regression (b) 3.073, A negative relationship (2.976, 2.888 and 3.119 for spring, summer and autumn respectively. The condition factors were (2.15, 1.96 and 2.007 for all seasons respectively. The linear relationship between total length and other body dimensions were high correlation except height of pectoral fin and the distance after pelvic fin, Food components investigated, it was found that algae represent more than half of the contents in the gut for blue tilapia by points method 51.46 % and 92.31 % in frequency of occurrence method. | ||
| Keywords | ||
| Tilapia; seasonal variation; condition factor; linear correlation | ||
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