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:: Volume 10, Issue 4 (1-2017) ::
JAD 2017, 10(4): 111-124 Back to browse issues page
Effects of fasting on body electrolytes in kuttum fish (Rutilus frisii kuttum) during sea water adaptation
M. Mohiseni * , S.M.V Farabi , M. Banaee , B. Nematdust Haghi
Department of fisheries, Faculty of Natural Resources, Behbahan Khatam Alanbia University of Technology
Abstract:   (2767 Views)

Salinity adaptation and sea water tolerance are vital and energy demanding process in the life history of anadromous species such as kuttum fish. As a results of this phenomenon the blood electrolytes fluctuation would be prevented. Evaluation on feed deprivation in ion changes of kuttum fish is the aim of this study. Kuttum juveniles with average weight of 0.5 gram were divided into the couple groups. One group considered as a control and were fed ad libitum during over the experiment and fishes from another group were left fasted. Both groups were exposed to the salinity challenge for 7 days and sampling was done in second, third, fourth and seventh days after challenge initiation. Consequently Na+K+ATPase activity, monovalent (sodium, potassium and chloride) and divalent (calcium) ions were evaluated. Results showed significant decrease in NaKATPase activity as a result of fasting. Some ions (Ca and K) were also decreased significantly. On the other hand, Sodium and chloride were increased in the feed deprived kuttum fish. Based on obtained results we can conclude that feed deprivation may have a disruptive effect on success in seawater adaptation. Therefore more attention should be considered about feeding as an important factor in kuttum recruitment policy.

Keywords: feed deprivation, Seawater adaptation, ion regulation, Kuttum fish fingerling
Full-Text [PDF 1272 kb]   (907 Downloads)    
Type of Study: Research | Subject: Special
Received: 2015/06/9 | Accepted: 2015/07/25 | Published: 2017/01/16
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Mohiseni M, Farabi S, Banaee M, Nematdust Haghi B. Effects of fasting on body electrolytes in kuttum fish (Rutilus frisii kuttum) during sea water adaptation. JAD 2017; 10 (4) :111-124
URL: http://aqudev.liau.ac.ir/article-1-140-en.html


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Volume 10, Issue 4 (1-2017) Back to browse issues page
نشریه توسعه آبزی پروری Journal of Aquaculture Development
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