[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 15, Issue 1 (1-2016) ::
IJFS 2016, 15 Back to browse issues page
Acclimation responses of gill ionocytes of red tilapia (Oreochromis mossambicus × O. niloticus) to water salinity and alkalinity
J. Jeerawat Thammaratsuntorn , J.L. Jin-Liang Zhao * , L.H. Zhao , Q.Q. Zhuang , J.T. Guo , Ch. Larbi Ayisi
, jlzhao@shou.edu.cn
Abstract:   (2488 Views)

To understand the acclimation strategies of red tilapia to different environments, this study aimed to evaluate different responses of red tilapia (O. mossambicus × O. niloticus) to salinity (10-30‰), alkalinity (1-3 gL-1 NaHCO3) and salinity and alkalinity (10/1-30/3 ‰/gL-1NaHCO3) environments. Localization, type, size, and numeration of gill ionocytes were investigated on the same specimens by scanning electron microscopy (SEM) and immunohistochemistry (IHC) with antibodies of Na+/K+-ATPase (NKA), Na+/K+/2Cl-contransporter (NKCC), cystic fibrosis transmembrane conductance regulator (CFTR) and carbonic anhydrase (CA). Ionocytes were only located on filaments conducted by SEM. Four types of ionocytes namely pit, convex, concave and transitory types were determined morphologically by their apical openings of which concave and transitory type were not present in freshwater (FW) and saltwater (SW) fish (10). Both ionocytes size and number increased with elevated stress levels. In comparison to FW, density of ionotypes increased to about 4.75, 3.00 and 3.44 fold in SW (30), AW (3) and S&AW (30/3) respectively. Immunoreactive cells on gill filaments confirmed branchial distribution of ionocytes. Immunoreaction of NKA, NKCC and CA appeared in FW except for CFTR while they all appeared in SW (30), AW (3) and S&AW (30/3).

Keywords: Acclimation response, Ionocytes, Salinity, Alkalinity, Red tilapia.
Full-Text [PDF 593 kb]   (1360 Downloads)    
Type of Study: Orginal research papers | Subject: fish disease
Received: 2016/03/16 | Accepted: 2016/03/16 | Published: 2016/03/16
Send email to the article author

Add your comments about this article
Your username or Email:

Write the security code in the box >

XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Jeerawat Thammaratsuntorn J, Jin-Liang Zhao J, Zhao L, Zhuang Q, Guo J, Larbi Ayisi C. Acclimation responses of gill ionocytes of red tilapia (Oreochromis mossambicus × O. niloticus) to water salinity and alkalinity. IJFS. 2016; 15 (1) :524-541
URL: http://jifro.ir/article-1-2150-en.html

Volume 15, Issue 1 (1-2016) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3638