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Biol Bull 160: 114-122. (February 1981)
© 1981 Marine Biological Laboratory
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CIRCADIAN FLUCTUATIONS IN TOTAL PROTEIN AND CARBOHYDRATE CONTENT IN THE SLUG LAEVICAULIS ALTE (FERUSSAC, 1821)

T. PAVAN KUMAR 1, R. RAMAMURTHI 1, and K. SASIRA BABU 1

1 Department of Zoology, S. V. University, Tirupati 517502, India

Rhythmic fluctuations in total protein and carbohydrates in the central nervous system, midgut gland, and foot muscle of Laevicaulis alte were not in phase with each other. Fluctuations were largest in the midgut gland. The occurrence of crest values during dark hours for total protein and light hours for total carbohydrates, high protein levels during the dark span and high carbohydrates during light, may be related to the animal's motor functions. Percent loss of water content was bimodal in all three tissues studied.

Submitted on July 23, 1979
Accepted on November 10, 1980






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Copyright © 1981 by the Marine Biological Laboratory.