Pulsatile urea excretion in the toadfish (Opsanus beta) is due to a pulsatile excretion mechanism, not a pulsatile production mechanism

Journal of Experimental Biology

Volumn 200, Issue 6, 1997, Pages 1039-1046

  Wood, Chris M ^a,b   Hopkins, Todd E ^a,c   Walsh, Patrick J ^a  

^a UNIVERSITY OF MIAMI   (United States)

^b MCMASTER UNIVERSITY   (Canada)

^c Rookery Bay National Estuarine Research Reserve   (United States)

Author keywords

cortisol; gills; liver; nitrogen metabolism; Opsanus beta; pulsatile excretion; toadfish; urea; ureotelism

Indexed keywords

BATRACHOIDIDAE GEN. SP.; OPSANUS BETA;

EID: 0030953885     PISSN: 00220949     EISSN: None     Source Type: Journal    
DOI: 10.1242/jeb.200.6.1039     Document Type: Article

References (29)

1. ANDERSON, P. M. AND WALSH, P. J. (1995). Subcellular localization and biochemical properties of the enzymes of carbomoyl phosphate and urea synthesis in the batrachoidid fishes Opsanus beta, Opsanus tau and Porichthys notatus. J. exp. Biol. 198, 755-766
2. BARBER, M. L. AND WALSH, P. J. (1993). The interactions of acid-base status and nitrogen excretion and metabolism in the ureogenic teleost, Opsanus beta. J. exp. Biol. 185, 87-105.
3. BROWN, S. B., EALES, J. G. AND HARA, T. J. (1986). A protocol for estimation of cortisol plasma clearance in acid-exposed rainbow trout. Gen. comp. Endocr. 62, 493-502.
4. BRY, C. (1982). Daily variations in plasma cortisol levels of individual female rainbow trout (Salmo gairdneri): evidence for a postfeeding peak in well-adapted fish. Gen. comp. Endocr. 48, 462-468.
5. GILLIN, A. G. AND SANDS, J. M. (1993). Urea transport in the kidney. Sem. Nephrol. 13, 146-154.
6. GRIFFITH, R. W. (1991). Guppies, toadfish, lungfish, coelocanths and frogs: a scenario for the evolution of urea retention in fishes. Env. Biol. Fishes 32, 199-218.
7. HAYS, R. M., LEVINE, S. D., MYERS, J. D., HEINEMANN, H. O., KAPLAN, M. A., FRANKIN, N. AND BERLINER, H. (1977). Urea transport in the dogfish kidney. J. exp. Zool. 199, 309-316.
8. HOPKINS, T. E., WOOD, C. M. AND WALSH, P. J. (1995). Interactions of cortisol and nitrogen metabolism in the ureogenic gulf toadfish Opsanus beta. J. exp. Biol. 198, 2229-2235.
9. ISOZAKI, T., LEA, J. P., TUMLIN, J. A. AND SANDS, J. M. (1994). Sodium dependent net urea transport in rat initial IMCDs. J. clin. Invest. 94, 1513-1517.
10. IVANCIC, I. AND DEGGOBIS, D. (1984). An optimal manual procedure for ammonia analysis in natural waters by the indophenol blue method. Water Res. 18, 1143-1147.
11. KNEPPER, M. A. AND STAR, R. A. (1990). The vasopressin-regulated urea transporter in renal inner medullary collecting duct. Am. J. Physiol. 259, F393-F401.
12. MARSH, D. J. AND KNEPPER, M. A. (1992). Renal handling of urea. In Handbook of Physiology, section 8, Renal Physiology (ed. E. E. Windhager), pp. 1317-1348. New York: Oxford University Press.
13. MOMMSEN, T. P. AND WALSH, P. J. (1989). Evolution of urea synthesis in vertebrates: the piscine connection. Science 243, 72-75.
14. PÄRT, P., WRIGHT, P. A. AND WOOD, C. M. (1997). Urea and water permeability of dogfish (Squalus acanthias) gills. Comp. Biochem. Physiol. A (in press).
15. PRICE, N. M. AND HARRISON, P. J. (1987). Comparison of methods for the analysis of urea in seawater. Mar. Biol. 94, 307-313.
16. READ, L. J. (1971). The presence of high ornithine-urea cycle enzyme activity in the teleost Opsanus tau. Comp. Biochem. Physiol. 39B, 409-413.
17. SAYER, M. D. J. (1988). An investigation of the pattern of nitrogen excretion in Blennius pholis (L.). Comp. Biochem. Physiol. 89A, 359-363.
18. SCHMIDT-NIELSEN, B. AND RABINOWITZ, L. (1964). Methylurea and acetamide: active reabsorption by elasmobranch renal tubules. Science 146, 1587-1588.
19. SCHMIDT-NIELSEN, B., TRUNIGER, B. AND RABINOWITZ, L. (1972). Sodium-linked urea transport by the renal tubule of the spiny dogfish Squalus acanthias. Comp. Biochem. Physiol. 42A, 13-25.
20. WALSH, P. J., DANULAT, E. AND MOMMSEN, T. P. (1990). Variation in urea excretion in the gulf toadfish, Opsanus beta. Mar. Biol. 106, 323-328.
21. WALSH, P. J. AND MILLIGAN, C. L. (1995). Effects of feeding on nitrogen metabolism and excretion in the gulf toadfish Opsanus beta. J. exp. Biol. 198, 1559-1566.
22. WALSH, P. J., TUCKER, B. C. AND HOPKINS, T. E. (1994a). Effects of confinement/crowding on ureogenesis in the gulf toadfish Opsanus beta. J. exp. Biol. 191, 195-206.
23. WALSH, P. J. AND WOOD, C. M. (1996). Interactions of urea transport and synthesis in hepatocytes of the gulf toadfish, Opsanus beta. Comp. Biochem. Physiol. 113B, 411-416.
24. WALSH, P. J., WOOD, C. M., PERRY, S. F. AND THOMAS, S. (1994b). Urea transport by hepatocytes and red blood cells of selected elasmobranch and teleost fishes. J. exp. Biol. 193, 321-335.
25. WOOD, C. M. (1993). Ammonia and urea metabolism and excretion. In The Physiology of Fishes (ed. D. H. Evans), pp. 379-425. Boca Raton, FL: CRC Press.
26. WOOD, C. M., HOPKINS, T. E., HOGSTRAND, C. AND WALSH, P. J. (1995a). Pulsatile urea excretion in the ureagenic toadfish Opsanus beta: an analysis of rates and routes. J. exp. Biol. 198, 1729-1741.
27. WOOD, C. M., PÄRT, P. AND WRIGHT, P. A. (1995b). Ammonia and urea metabolism in relation to gill function and acid-base balance in a marine elasmobranch, the spiny dogfish (Squalus acanthias). J. exp. Biol. 198, 1545-1558.
28. WOOD, C. M. AND PERRY, S. F. (1991). A new in vitro assay for carbon dioxide excretion by trout red blood cells: effects of catecholamines. J. exp. Biol. 157, 349-366.
29. YOU, G., SMITH, C. P., KANAI, Y., LEE, W. S., STELZNER, M. AND HEDIGER, M. A. (1993). Cloning and characterization of the vasopressin-regulated urea transporter. Nature 365, 844-847.