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Variations in the Oxygen Uptake, Reduced Weight and Metabolic Rate of Starving Sporocysts of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae)

Published online by Cambridge University Press:  05 June 2009

Roy J. Richards
Affiliation:
Department of Zoology, University College of Swansea, Singleton Park, Swansea, Wales

Extract

The variations in the oxygen uptake, reduced weight, metabolic rate and the number of contained, fully formed, healthy, autolysed or dead metacercariae, recorded during starvation in sea water, in vitro, suggest that first mainly stored carbohydrates, then mainly lipids and, in the final stages of starvation, mainly proteins are broken down and metabolised, by the sporocysts of Microphallus pygmaeus.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Von Brand, T., 1966.—Biochemistry of Parasites. Acad. Press N.Y. and London, pp 333382.Google Scholar
Cheng, T. C. and Snyder, R. W., 1962a.—“Studies on host-parasite relationships between larval trematodes and their hosts. I. A. review. II. The utilisation of the host's glycogen by the intramolluscan larvae of Glypthelmins pennsylvaniensis Cheng, and related phenomena.” Trans. Am. microsc. Soc., 81, 210228.Google Scholar
Cheng, T. C. and Snyder, R. W., (1962a).—“Studies on host-parasite relationships between larval trematodes and their hosts. III. Certain aspects of lipid metabolism in Helisoma trivolis (Say) infected with the larvae of Glypthelmins pennsylvaniensis Cheng, and related phenomena.” Trans. Am. microsc. Soc., 81, 327331.CrossRefGoogle Scholar
Ginetsinkaja, T. A., 1968.—The Trematoda, their life-cycles, biology and evolution. (In Russian). Acad, of Sciences, Leningrad, USSR, pp. 411.Google Scholar
Holter, H. and Zeuthen, E., 1948.—“Metabolism and reduced weight in starving Chaos chaos.” C. r. Trav. Carlsberg, Ser. chim., 26, 277296.Google Scholar
James, B. L., 1968.—“Studies on the life cycle of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae).” J. nat. Hist., 2, 155172.CrossRefGoogle Scholar
James, B. L., AND Bowers, E. A., 1967a.—“Histochemical observation on the occurrence of carbohydrates, lipids and enzymes in the daughter sporocyst of Cercaria bucephalopsis hiamena (Lacaze-Duthiers, 1854) (Digenea: Bucephalidae).” Parasitology, 57, 7986.CrossRefGoogle Scholar
James, B. L., AND Bowers, E. A., 1967b.—“The effects of parasitism by the daughter sporocysts of Cercaria bucephalopsis hiamena (Lacaze-Duthiers, 1854) on the digestive tubules of the cockle, Cardium edule L.Parasitology, 57, 6777.CrossRefGoogle Scholar
Pascoe, D., 1969a.—“The effect of the tricarboxylic acid cycle intermediate, succinate on the oxygen consumption of the daughter sporocysts of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae).” In preparation.CrossRefGoogle Scholar
Pascoe, D., 1969b.—“Micro-respirometric and in vitro studies on the absorption and metabolism of carbohydrates, by the intramolluscan stages of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae).” In preparation.CrossRefGoogle Scholar
Pascoe, D., AND Richards, R. J., 1969.—“Variations in the respiratory quotient of the daughter sporocysts of Cercaria dichotoma Lebour, 1911 during starvation.” In press, in Acta parasitologica.Google Scholar
Pascoe, D., AND Richards, R. J., AND James, B. L., 1968.—“Oxygen uptake metabolic rate, reduced weight, length and number of cercariae in starving sporocysts of Cercaria dichotoma.” Expl Parasit., 23,171182.CrossRefGoogle ScholarPubMed
Richards, R. J., 1969a.—“The effect of the amino acid, L-proline on the oxygen uptake and metabolic rate of the daughter sporocysts of Microphallus Pygmaeus (Levinson, 1881) (Trematoda: Microphallidae).” Ph.D. Thesis, Ch. 3, University College, Swansea.CrossRefGoogle Scholar
Richards, R. J., 1969b.—“The relationships between the oxygen uptake, reduced weight, length and number of metacercariae in the sporocysts of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae).” In preparation.CrossRefGoogle Scholar
Richards, R. J., AND Pascoe, D., 1969a.—“Variations in the metabolism of the daughter sporocysts of Cercaria dichotoma Lebour, 1911, containing metacercariae, during starvation in sea water and in L-glutaminc and glucose solutions.” In preparation.Google Scholar
Richards, R. J., AND Pascoe, D., 1969b.—“Variations in the oxygen uptake, reduced weight, metabolicrate and length of the daughter sporocysts of Microphallus pygmaeus (Levinsen, 1881) in a chemically defined medium.” In preparation.CrossRefGoogle Scholar
Vernberg, V. B., 1961.—“Studies on oxygen consumption in digenetic trematodes. VI. The influence of temperature on larval trematodes.” Expl Parasit., 11, 270275.CrossRefGoogle ScholarPubMed
Vernberg, V. B., 1963.—“Respiration of digenetic trematodes.” Ann. N.Y. Acad. Sci., 113, 261271.CrossRefGoogle ScholarPubMed
Vernberg, V. B., AND Hunter, W. S., 1963.—“Utilisation of certain substrates by larval and adult stages of Himasthlaquisselensis.” Expl Parasit. 14, 311315.CrossRefGoogle Scholar