Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater

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HAJIREZAEE SAEED; KHANJANI MOHAMMAD HOSSEIN

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Journal: Journal of Aquaculture Development Year:2020 | Volume:14 | Issue:1 Page(s): 15-23

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Title

Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater

Author(s)

HAJIREZAEE SAEED | KHANJANI MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

salinityQ2

osmoregulationQ2

sea bassQ1

Abstract

In the present study, the adaptation of Asian sea bass (lates calcarifer) was investigated in fresh water using physiological parameters of osmoregulation including: the plasma levels of thyroid hormones and cortisol, gill Na+/ K+-ATPase activity and plasma concentrations of sodium and chloride. For this purpose, 60 fish were distributed in three 300 L tanks with a density of 20 fish per tank. Fish sampling was done in two steps: Step 1) Before adaptation in freshwater (sea water stage) and step 2) After 24 hours adaptation in fresh water. According to the results, the activity of Na+/ K+-ATPase significantly increased during the period of adaptation in fresh water (p<0. 05). Thyroid hormones showed a significant increase during 24 adaptation in fresh water (p<0. 05). Also, cortisol levels did not change during the adaptation period (p>0. 05). The concentration of sodium and chlorine ions significantly decreased during the adaptation period in fresh water (p<0. 05). Additionally, 10% mortality was observed during the period of adaptation. The results of this study showed that Asian sea bass can be adapted to freshwater shock. However, it seems that the proper ion balance obtains at adaptation period more than 24 h.

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APA: Copy

HAJIREZAEE, SAEED, & KHANJANI, MOHAMMAD HOSSEIN. (2020). Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater. JOURNAL OF AQUACULTURE DEVELOPMENT, 14(1 ), 15-23. SID. https://sid.ir/paper/242151/en

Vancouver: Copy

HAJIREZAEE SAEED, KHANJANI MOHAMMAD HOSSEIN. Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater. JOURNAL OF AQUACULTURE DEVELOPMENT[Internet]. 2020;14(1 ):15-23. Available from: https://sid.ir/paper/242151/en

IEEE: Copy

SAEED HAJIREZAEE, and MOHAMMAD HOSSEIN KHANJANI, “Osmoregulatory Parameters of Asian sea bass (Lates calcarifer) during adaptation in Freshwater,” JOURNAL OF AQUACULTURE DEVELOPMENT, vol. 14, no. 1 , pp. 15–23, 2020, [Online]. Available: https://sid.ir/paper/242151/en

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