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Blood Borne Factors in Circadian Rhythms of Activity

Nature volume 213, pages 1047–1048 (1967)Cite this article

Abstract

RHYTHMS of a circadian nature in locomotor and other kinds of activity have been described in a variety of organisms. While much is known about the time course and phase relations of such rhythms, very little is known about the internal regulating mechanisms. The diurnal locomotor rhythm in the cockroach is controlled by neurosecretory cells located in the sub-oesophageal ganglion1,2. Transplantation experiments have shown the importance of the presence of the sub-oesophageal neurosecretory apparatus for the persistence of the locomotory rhythm, but no variations with the time of the day in the direct effects of the neurosecretory products on the degree of activity of the central nervous system have been demonstrated.

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References

  1. Harker, J. E., J. Exp. Biol., 33, 224 (1956).

    Google Scholar 

  2. Harker, J. E., J. Exp. Biol., 37, 164 (1960).

    Google Scholar 

  3. Rao, K. P., Proc. XVI Intern. Congr. Zool., 2, 69 (1963).

    Google Scholar 

  4. Ozbas, S., and Hodgson, E. S., Proc. U.S. Nat. Acad. Sci., 44, 825 (1958).

    Article  ADS  CAS  Google Scholar 

  5. Milburn, N., Weiant, E. A., and Roeder, K. D., Biol. Bull., 118, 111 (1960).

    Article  Google Scholar 

  6. Milburn, N., and Roeder, K. D., Gen. Comp. Endocrin., 2, 70 (1962).

    Article  CAS  Google Scholar 

  7. Strejcková, A., Servit, Z., and Novák, V. J. A., J. Ins. Physiol., 11, 889 (1965).

    Article  Google Scholar 

  8. Habibulla, M., thesis, Univ. Sri Venkateswara, Tirupati (1962).

  9. Rao, K. P., J. Anim. Morphol. Physiol., 11, 133 (1964).

    Google Scholar 

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Author notes

  1. KANDULA PAMPAPATHI RAO

    Present address: Department of Neurosciences, University of California, San Diego, La Jolla, California

Authors and Affiliations

  1. Department of Zoology, Sri Venkateswara University, Tirupati, A.P., India

    KANDULA PAMPAPATHI RAO & T. GROPALAKRISHNAREDDY

Authors
  1. KANDULA PAMPAPATHI RAO
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  2. T. GROPALAKRISHNAREDDY
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RAO, K., GROPALAKRISHNAREDDY, T. Blood Borne Factors in Circadian Rhythms of Activity. Nature 213, 1047–1048 (1967). https://doi.org/10.1038/2131047a0

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