A review on the activity of Na+/K+-ATPase in branchial ionocytes and its role in salinity adaptation among diadromous species
1 Aquaculture Department, College of Fisheries, Mindanao State University - Tawi-Tawi College of Technology and Oceanography, Sanga-Sanga, Bongao 7500, Tawi-Tawi, Philippines.
2 Institute of Aquaculture, College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao 5023, Iloilo, Philippines.
Review Article
World Journal of Advanced Research and Reviews, 2020, 06(02), 201-211
Article DOI: 10.30574/wjarr.2020.6.2.0158
Publication history:
Received on 14 May 2020; revised on 26 May 2020; accepted on 28 May 2020
Abstract:
Freshwater and saltwater environments have opposite osmotic gradients. In freshwater, organisms tend to uptake ions from the surrounding, while in saltwater, they need to excrete the excess ions. Branchial ionocytes play a significant role in euryhaline teleost species that migrate to different salinity gradients as part of their life cycle. Ionocytes are highly dependent on the activity of Na+/K+-ATPase (NKA) in salinity adaptation. Thus, this review article determines the factors affecting NKA activity in ionocytes and its role in salinity adaptation among diadromous species. Several findings suggest that NKA activity is affected by various factors such as hormones, nutrition, and gene expression. Ionocytes enriched with NKA have many functions in diadromous depending on their types, location, size, and number in branchial necessary for these organisms to carry out their biological function in ionic-regulatory processes.
Keywords:
Osmoregulation; Euryhaline; Catadromous; Hypertonic; Chloride cells
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Copyright © 2020 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0