Skip to main content
Log in

Neurosecretory changes induced by salt loading in the freshwater leech, Poecilobdella viridis (Blanchard)

  • Published:
Hydrobiologia Aims and scope Submit manuscript

Abstract

Histomorphological changes after salt (NaCl) loading in brain neurosecretory cells have been tracked light microscopically at three concentrations (0.500%, 1.000% and 1.500%) of NaCl. Only 1.000% and 1.500% NaCl induced significant neurosecretory alterations. In A cells there was a dramatic downfall in neurosecretory material, (NSM) intensity and a significant increment and decrease in nuclear diameter and cell area respectively following both 1.000% and 1.500% NaCl loading, whereas both salt concentrations produced significant decrease in cell area of B cells but only 1.500% NaCl induced significant enhancement in its nuclear diameter accompanied by a lowering of NSM intensity. Functional significance of these changes is elucidated in the light of neurosecretory dynamics.

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

References

  • Adams, T. S., Grugel, S., Ittycheriah, P. I., Olstad, G. & Caldwell, J. M. 1975. Interactions of the ring gland, ovaries and juvenile hormone with brain neurosecretory cells in Musca domestica. J. Insect Physiol. 21: 1027–1043.

    Article  CAS  PubMed  Google Scholar 

  • Aros, B. & Bodnar, E. 1960. Histologische Untersuchungen über die neurohumorale Funktion von Eisenia rosea (Oligochaeta). Symp. Biol. Hung. 1: 191–202.

    Google Scholar 

  • Awasthi, V. B. 1975. Responses of the neurosecretory system of Gryllodes sigillatus (Walk.) and Sphaerodema rusticum (Fabr.) to salt solution. Zool. Jb. Anat. Bd. 95: 67–73.

    Google Scholar 

  • Awasthi, V. B. & Misra, S. D. 1974. Effect of salinity stress on the Cysteine and/or Cystine rich neurosecretory cells of the earthworm, Pheretima posthuma. Zool. Beiträge Berlin.: 505–510.

  • Ewen, A. B. 1962. An improved aldehyde-fuchsin staining techniques for neurosecretory products in insects. Trans. Am. Micros. Soc. 81: 84–96.

    Article  Google Scholar 

  • Hanumante, M. M. 1975. Some aspects of the Physiology of an Indian earthworm. Ph. D. thesis-Marathwada University, Aurangabad. India.

    Google Scholar 

  • Jarial, M. S. & Scudder, G. G. E. 1971. Neurosecretion and water balance in Cenocorixa bifida (Hung). Can. J. Zool. 49: 1369–1375.

    Article  CAS  PubMed  Google Scholar 

  • Kamemoto, F. I., Kato, K. N. & Tucker, L. E. 1966. Neurosecretion and salt and water balance in Annelida and Crustacea. Am. Zool. 6: 213–219.

    Article  CAS  PubMed  Google Scholar 

  • Kulkarni, G. K. 1976. Studies on the Biochemical Ecology of Indian leech, Poecilobdella. Ph. D. thesis-Marathwada University Aurangabad. India.

    Google Scholar 

  • Nayar, K. K. 1962. Effect of injecting juvenile hormone extracts on the neurosecretory system of adult male cockroach (Periplaneta americana) Mem. Soc. Endocrinol. 12: 371–378.

    Google Scholar 

  • Raina, S. K. 1974. Studies on the neuroendocrine system in the earwig, Labidura riparia (Pallas). Labiduridae: Dermaptera. Ph. D. thesis-Nagpur University, Nagpur India.

    Google Scholar 

  • Singh, K. B. & Dominic, C. J. 1974. Reserpine inhibition of hypertonic saline induced changes in the hypothalamic neurosecretory system of the spotted owlet, Athenebrama temminck. Endocrinologie, 63, 263–270.

    Article  CAS  Google Scholar 

  • Stutinsky, F. 1953. Mise en évidence d'une substance antidiuretique dans le cerveau et la complex rétrocérébrale d'une blatte: Blabera fusca. Biol. Soc. Zool; Fr. 78; 202–204.

    Google Scholar 

  • Wendelaar Bonga, S. E. 1971. Osmotically induced changes in the activity of neurosecretory cells located in the pleural ganglia of the freshwater snail, Lymnaea stagnalis (L) studied by quantitative electron microscopy. Neth. J. Zool. 21: 127–158.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kulkarni, G.K., Hanumante, M.M. & Nagabhushanam, R. Neurosecretory changes induced by salt loading in the freshwater leech, Poecilobdella viridis (Blanchard). Hydrobiologia 62, 3–6 (1979). https://doi.org/10.1007/BF00012557

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00012557

Keywords

Navigation