..., osmoregulation, acid-base regulation, and excretion of nitrogenous waste. Physiol. Rev . 85 , 97 -177. Fiol, D. F. and Kültz, D. ( 2005 ). Rapid hyperosmotic coinduction of two tilapia ( Oreochromis mossambicus )transcription factors in gill cells. Proc. Natl. Acad. Sci. USA 102 , 927 -932. Fiol...

... for the yolk-sac membrane that contains MRCs. * Author for correspondence (e-mail: [email protected] ) 14 8 2005 © The Company of Biologists Limited 2005 2005 yolk ball mitochondrion-rich cell tilapia Oreochromis mossambicus yolk-sac membrane chloride turnover...

... of Mozambique tilapia ( Oreochromis mossambicus )embryos and larvae during seawater adaptation. J. Exp. Biol. 202 , 3485 -3495. Hirose, S., Kaneko, T., Naito, N. and Takei, Y. ( 2003 ). Molecular biology of major components of chloride cells. Comp. Biochem. Physiol. 136B , 593 -620. Hootman, S. R...

...Junya Hiroi; Stephen D. McCormick; Ritsuko Ohtani-Kaneko; Toyoji Kaneko SUMMARY Mozambique tilapia Oreochromis mossambicus embryos were transferred from freshwater to seawater and vice versa , and short-term changes in the localization of three major ion transport proteins,Na + /K + -ATPase,Na + /K...

...Li-Yih Lin; Pung-Pung Hwang SUMMARY Mitochondria-rich cells (MRCs) in the yolk-sac membrane of tilapia( Oreochromis mossambicus ) larvae were examined by Na + /K + -ATPase immunocytochemistry and vital staining for glycoproteins following acclimation to high (7.5–7.9 mmol l –1 ), normal (0.48–0.52...

...Masaya Morita; Akihiro Takemura; Makoto Okuno SUMMARY Euryhaline tilapia Oreochromis mossambicus can reproduce in freshwater and in seawater. Regulation of sperm motility appears to be modulated during acclimation of the fish from freshwater to seawater, being independent of extracellular Ca 2...

...M. Morita; A. Takemura; M. Okuno SUMMARY Euryhaline tilapia Oreochromis mossambicus acclimates to the external spawning environment by modulating its mechanism for regulating sperm motility. Adaptation of sperm was performed by acclimating fish in various environments. In this paper, regulatory...

...Kiyono Shiraishi; Junya Hiroi; Toyoji Kaneko; Manabu Matsuda; Tetsuya Hirano; Takao Mori SUMMARY To examine the functional differentiation of chloride cells in the yolk-sac membrane of tilapia ( Oreochromis mossambicus ) embryos, we developed a ‘yolk-ball’ incubation system in which the yolk sac...

...Zhichao Dang; Paul H. M. Balm; Gert Flik; Sjoerd E. Wendelaar Bonga; Robert A. C. Lock ABSTRACT The effect of cortisol on Na + /K + -ATPase expression in the gill chloride cells of tilapia Oreochromis mossambicus was studied by immunocytochemistry at the light and electron microscope levels. One...

... cell mitochondria-rich cell tilapia Oreochromis mossambicus rainbow trout Oncorhynchus mykiss In freshwater fish, the active uptake of Na + and Cl − is necessary for ionic homeostasis. The consequence of living in a hypo-osmotic medium and having a large surface area (the gill) subject...

...Junya Hiroi; Toyoji Kaneko; Masaru Tanaka ABSTRACT Changes in chloride cell morphology were examined in the yolk-sac membrane of Mozambique tilapia ( Oreochromis mossambicus ) embryos and larvae transferred from fresh water to sea water. By labelling chloride cells with DASPEI, a fluorescent probe...

... uptake of Na + by freshwater fish. * e-mail: [email protected] 27 9 1999 29 11 1999 © 1999 by Company of Biologists 1999 H + -ATPase V-type ATPase proton pump Na + Cl − teleost bafilomycin A1 gill tilapia Oreochromis mossambicus carp Cyprinus...

...Jong-Chang Tsai; Pung-Pung Hwang ABSTRACT The organization of the microtubules and actin filaments in the gills of tilapia ( Oreochromis mossambicus ) larvae was revealed by confocal microscopy. The fluorescence intensity of the microtubules in the gills was increased by adding wheat germ...

..., partially characterised and tested for their inhibitory effect on the K + -dependent p -nitrophenol phosphatase ( p NPPase) activity of tilapia ( Oreochromis mossambicus ) gill basolateral membrane. Thin-layer chromatography of the lipids from dichloromethane:methanol extracts of M. aeruginosa PCC 7820...

... tissue of freshwater- and seawater-adapted Mozambique tilapia Oreochromis mossambicus . Brush-border preparations were enriched 15.8-fold in alkaline phosphatase activity and consisted almost exclusively of right-side-out membrane vesicles. Basolateral membrane preparations were enriched 7.5-fold in Na...

... of Biologists Ltd. 1997 tilapia Oreochromis mossambicus chloride cell pavement cell Na + /Ca 2+ exchange Na + /K + -ATPase homeostasis Freshwater fish take up Na + and Ca 2+ from the water via their gills ( Lin and Randall, 1995 ; Flik et al . 1995 ). In the branchial epithelium...

... MR cells that are in contact with the water (cells labelled with both DASPMI and Concanavalin-A) and those that are not (DASPMI-positive only). This method was used to describe differences in MR cell density that occur in the gills of tilapia Oreochromis mossambicus adapted to fresh water or sea...

...Mathilakath M. Vijayan; John D. Morgan; Tatsuya Sakamoto; E. Gordon Grau; George K. Iwama ABSTRACT We tested the hypothesis that nutritional state affects seawater acclimation by transferring either fed or food-deprived (2 weeks) male tilapia ( Oreochromis mossambicus ) from fresh water to full...

...N. R. Bury; G. Flik; F. B. Eddy; G. A. Codd ABSTRACT The effects of cytotoxic substances from cyanobacteria on ionic transport processes in tilapia ( Oreochromis mossambicus ) were examined. Inhibitory effects on ionic transport including whole-body Ca 2+ fluxes and P-type ATPases of the gill were...

...Jie Li; Jelle Eygensteyn; Robert A. C. Lock; Pieter M. Verbost; Angelique J. H. Van Der Heijden; Sjoerd E. Wendelaar Bonga; Gert Flik ABSTRACT Branchial chloride cells in the developing larvae and juveniles of freshwater tilapia, Oreochromis mossambicus , were identified and the membrane Na + /K...