Abstract
Changes in blood, hepatopancreas and kidney urea concentrations in O. verruculatum have been assessed in response to endocrinological provocations. Two hr after pleurovisceral (PV) ganglion removal blood and nephridial urea levels were found to be significantly lowered and elevated respectively, whereas the hepatopancreas urea value remained unaltered, over the sham control. Unboiled and boiled macerates of PV (2 gn/animal) ganglion were effective in significantly inhibiting urea levels in blood and kidney of normal intact individuals. The possibility of a neurohormone from the PV, influencing tissue urea levels is discussed.
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Hanumante, M. M. & Deshpande, U. D. 1979. Regulation of ammonia (NH3-N) metabolism in the marine pulmonate, Onchidium verruculatum I. Effects of a neuroendocrine centre on tissue ammonia levels. Hydrobiologia (In Press).
Hanumante, M. M., Deshpande, U. D. & R. Nagabhushanam. 1978. Susceptibility of urea and uric acid levels to neurohormone influence in the freshwater pulmonate, Lymnaea acuminata. Hydrobiologia 6o (2): 125–128.
Horne, F. R. 1977. Regulation of the urea metabolism in the slug, Limax flavus, Linne'. Comp. Biochem. Physiol. 5o (B): 63–69.
Nagabhushanam, R. & Kulkarni, G. K. 1979. Influence of eyestalk hormones on urea and uric acid levels in the freshwater palaemonid prawn, Macrobrachium kistnensis (Tiwari) (Crustacea, Decapoda, Palaemonidae). Communicated to Comp. Biochem. Physiol.
Nayeemunnisa, 1972. Aspects of nitrogen excretion during aestivation in the amphidious snail, pila globosa (Swainson): Evidence for enzyme urease susceptibility to neuroendocrine influence. Indian J. exp. Biol. 14: 239–241.
Schmale, H. & Becker, W. 1977. Studies on the urea cycle of Biomphalaria glabrata during normal feeding activity, in starvation and with infection of Schistosoma mansoni. Comp. Biochem. Physiol. 58 (B): 321–330.
Shylaja, R. & Alexander, K. M. 1976. Physiology of excretion in the freshwater gastropod, Pila virens, part III. Role of neurohormones in excretion. Indian J. exp. Biol. 14: 239–241.
Varley, H. 1967. Practical clinical Biochemistry, 4th edition. William Heinemann Medical Books Ltd. and Interscience Books Incorporation. New York, pp. 158.
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Deshpande, U.D., Nagabhushanam, R. & Hanumante, M.M. Preliminary evidence for the hormonal control of urea concentration in the marine pulmonate, Onchidium verruculatum. Hydrobiologia 75, 45–47 (1980). https://doi.org/10.1007/BF00006560
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DOI: https://doi.org/10.1007/BF00006560