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:: Volume 27, Issue 2 (7-2018) ::
isfj 2018, 27(2): 115-126 Back to browse issues page
Limnological study of earthpond and indoor systems of Tilapia, Oreochromis niloticus and Oreochromis sp. Culture
N. Mashaii1 , F. Rajabipour1 , M. Jafari1 , M. Mohamadi1 , H. Sarsangi1
1- Agricultural, Research, Education and Extension Organization, Iranian Fisheries Research Organization, National Research Center of Saline Water Aquatics
Abstract:   (4867 Views)

The different aspects of aquaculture and biology of Tilapia have surveyed since 2008 at National Research Center of Saline Water Aquatics. In the present study, some limnological factors of earthponds and indoor tanks of Tilapia culture were investigated during the breeding season of 2016. In the earthponds, the minimum and maximum of water temperature ranges were 16.6-27.5 °C and 20.5-31 °C, air temperature 2-27 °C and 30-48 °C, dissolved oxygen in the morning and afternoon 2.11-10.19 mg/L and 7.06-14.64 mg/L, pH in the morning and afternoon 8.97-10.9 and 9.04-13, the depth of transparency 40-105 cm, salinity 7.94-8.82 ppt and ammonium density less than 0.05 mg/L to 0.4mg/L. The most abundant phytoplankton and zooplankton were Chlorophytes, Diatoms and Rotifers, and dominant macrobenthos were Chironomids. There was significant positive correlation between pH value with ammonium density and body length and weight, water temperature with total length, and negative correlation between dissolved oxygen and temperature and pH (p<0.05). In the indoor tanks, the ranges of water temperature was 24-29°C, the minimum and maximum air temperature 16-30°C and 30-43 °C, dissolved oxygen 1.65-8.38 mg/L, pH 7.25-9.37, salinity 7.7-7.94 ppt, ammonium 0.16-5.0 mg/L. There was significant positive correlation between water salinity with body weight and length and negative correlation between the amounts of dissolved oxygen with temperature, pH and total length (p<0.05). Growth proceeding of red Tilapia was more favorable in the earth pond. Tilapia culture in earth ponds has advantages especially for using water biomass by fish and lower costs of the structures, however indoor systems are preferable because of the possibility of two growing periods per year, water conservation and environmental considerations.

Keywords: Tilapia, Culture, Environmental factors, Outdoor pond, Indoor pond
Full-Text [PDF 868 kb]   (1478 Downloads)    
Type of Study: Research |
Received: 2017/09/20 | Accepted: 2018/07/21 | Published: 2018/07/15
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Mashaii N, Rajabipour F, Jafari M, Mohamadi M, Sarsangi H. Limnological study of earthpond and indoor systems of Tilapia, Oreochromis niloticus and Oreochromis sp. Culture. isfj 2018; 27 (2) :115-126
URL: http://isfj.ir/article-1-1865-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 27, Issue 2 (7-2018) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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