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Keywords: Himantura signiferClose
J Exp Biol (2006) 209 (13): 2495–2508.
Published: 1 July 2006
... plasma urea); and the euryhaline freshwater stingray Himantura signifer , which possesses intermediate levels of urea. H. signifer also were acclimated to half-strength seawater(15‰) for 2 weeks to ascertain the metabolic effects of the higher urea level that results from salinity acclimation. Our...
J Exp Biol (2006) 209 (3): 484–492.
Published: 1 February 2006
...Shit F. Chew; Nirmala K. Poothodiyil; Wai P. Wong; Yuen K. Ip SUMMARY The white-edge freshwater whip ray Himantura signifer is ammonotelic in freshwater, but retains the capacities of urea synthesis and ureosmotic osmoregulation to survive in brackish water. The first objective of this study...
J Exp Biol (2003) 206 (20): 3625–3633.
Published: 15 October 2003
...Yuen K. Ip; Wai L. Tam; Wai P. Wong; Ai M. Loong; Kum C. Hiong; James S. Ballantyne; Shit F. Chew SUMMARY The white-edge whip tail ray Himantura signifer inhabits a freshwater environment but has retained the capability to synthesize urea de novo through the arginine-ornithine-urea cycle (OUC...
J Exp Biol (2003) 206 (17): 2931–2940.
Published: 1 September 2003
...Wai L. Tam; Wai P. Wong; Ai M. Loong; Kum C. Hiong; Shit F. Chew; James S. Ballantyne; Yuen K. Ip SUMMARY The white-edge freshwater whip ray Himantura signifer can survive in freshwater (0.7‰) indefinitely or in brackish water (20‰) for at least two weeks in the laboratory. In freshwater, the blood...