Skip to main content
Log in

Physiological studies onMarphysa gravelyi Southern

II. Volume regulation

  • Published:
Proceedings / Indian Academy of Sciences

5. Summary

Like all other polychaetes,M. gravelyi also swells when exposed to hyposmotic media. But the extent of increase was considerably low. In this worm, as in other polychaetes, the initial increase and the final volume attained are a function of the external medium. Both the final volume and the initial increase being very low inM. gravelyi, reduction in permeability is, perhaps, the maximum.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

6. References

  • Beadle, L. C... “The effect of salinity changes on the water content and respiration of marine invertebrates,”J. exp. Biol., 1931,8, 211–27.

    Google Scholar 

  • Beadle, L. C... “Adaptation to changes of salinity in the polychaetes: I. Control of body volume and of body fluid concentration inNereis diversicolor,”J. exp. Biol., 1937,14, 56–70.

    CAS  Google Scholar 

  • Ellis, W. G... “The water and electrolyte exchange ofNereis diversicolor (Muller),” Ibid., 1937,14, 340–50.

    CAS  Google Scholar 

  • —————.. “Comparative measurements of water and electrolyte exchange in a stenohaline and in a euryhaline polychaete,” Ibid., 1939,16, 483–86.

    Google Scholar 

  • Jørgensen, C. B. and Dales, R. P. “The regulation of volume and osmotic regulation in some nereid polychaetes,”Physiol. comp., 1957,4, 357–74.

    Google Scholar 

  • Krishnamoorthi, B... “Salinity tolerance and volume regulation in four species of polychaetes,”Proc. Ind. Acad. Sci., 1962,56, 363–71.

    Google Scholar 

  • —————.. “Volume regulation in eggs, larvae and adults of a brackish water polychaete,Diopatra variabilis (Southern),” Ibid., 1963b,57, 275–89.

    Google Scholar 

  • —— and Krishnaswamy, S... “Physiological studies onMarphysa gravelyi Southern: I. Salinity Tolerance,” Ibid., 1966a,63, 26–34.

    Google Scholar 

  • Lowndes, A. G... “The displacement method of weighing aquatic animals,”J. mar. biol. Ass. U.K., 1942,25, 555–72.

    Article  Google Scholar 

  • Sayles, L. P... “The effects of salinity changes on body weight and survival ofNereis virens,”Biol. Bull., Woods Hole, 1936,69, 233–44.

    Article  Google Scholar 

  • Schlieper, C... “Uber die Einwirkung niederer Salzkonzentration auf marine Organismen,”Z. vergl. Physiol, 1929a,9, 478–514.

    Article  Google Scholar 

  • —————.. “Neue Versuche uber die Osmoregulation wasserlebender Tiere,”Sitzungsbericht d. Ges. Z. Beford. d. gesamt. Naturwiss. Marburg, 1929b,64, 143–56.

    Google Scholar 

  • Smith, R. I... “Salinity variation in interstitial water of sand at Kames Bay, Millport, with reference to the distribution ofNereis diversicolor,”J. mar. biol. Ass. U.K., 1955c,34, 33–46.

    Article  Google Scholar 

  • —————.. “The ecology of the Tamar Estuary. VII. Observations on the interstitial salinity of intertidal muds in the estuarine habitat ofNereis diversicolor,” Ibid., 1956,31, 81–104.

    Google Scholar 

  • ----- .. “Physiological and Ecological problems of brackish waters in Marine Biology,”Proceedings of the Twentieth Annual Biology Colloquium, Oregon State College,, April 1959, pp. 59–69.

  • —————.. “A comparison of salt loss rate in three species of brackish water Nereid polychaetes,”Biol. Bull., Woods Hole, 1963b 125, 332–43.

    Article  Google Scholar 

  • Topping, F. L. and Fuller, J. F. “The accommodation of some marine invertebrates to reduced osmotic pressures,” Ibid., 1942,82, 372–84.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Formed part of a thesis accepted for the award of the Ph.D. degree of the University of Madras.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Krishnamoorthi, B., Krishnaswamy, S. Physiological studies onMarphysa gravelyi Southern. Proc. Indian Acad. Sci. 63, 117–125 (1966). https://doi.org/10.1007/BF03051983

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03051983

Keywords

Navigation