Hostname: page-component-745bb68f8f-mzp66 Total loading time: 0 Render date: 2025-01-13T08:17:26.706Z Has data issue: false hasContentIssue false
  • English
  • Français

Variations in the ultrastructure of the daughter sporocyst of Microphallus pygmaeus (Levinsen, 1881) (Digenea: Microphallidae) in chemically defined media

Published online by Cambridge University Press:  06 April 2009

Irene Popiel  and
B. L. James
Irene Popiel
Affiliation:
Department of Zoology, University College, Swansea
B. L. James
Affiliation:
Department of Zoology, University College, Swansea
Get access Rights & Permissions [Opens in a new window]

Summary

Changes in the ultrastructure of the daughter sporocyst and contained metacercariae of Microphallus pygmaeus during culture in artificial seawater and modified Medium 199 were examined and compared with variations in oxygen consumption. The very early commencement and rapid progression of autolysis in the sporocyst body wall as compared with little or no change in most metacercariae in both media, together with the elevated oxygen consumption in the nutrient medium, suggests that most of the oxygen is consumed by the contained metacercariae. The almost simultaneous onset of body wall degeneration in both media suggests that the nutrient medium is not suitable for the maintenance of healthy daughter sporocysts.

Type
Research Article
Information
Parasitology , Volume 76 , Issue 3 , June 1978 , pp. 349 - 358
Copyright
Copyright © Cambridge University Press 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Imohiosen, E. A. E. (1969). Studies on the biology of larval Digenea from littoral molluscs. Ph.D. thesis, University College, Swansea.Google Scholar
Pascoe, D. (1971). A comparison of the reduced weight, absolute weight, oxygen consumption and metabolic weight of entire trematode sporocysts, sporocyst walls and sporocyst contents. Zeitschrift für Parasitenkunde 38, 32–94.CrossRefGoogle Scholar
Pascoe, D. & Richards, R. J. (1970). Variations in the respiratory quotient of the daughter sporocysts of Cercaria dichotoma Lebour, 1911 during starvation. Acta Parasitologica Polonica 18, 107–14.Google Scholar
Pascoe, D., Richards, R. J. & James, B. L. (1968). Oxygen uptake, metabolic rate, reduced weight, length and number of cercariae in starving sporocysts of Cercaria dichotoma. Experimental Parasitology 23, 171–82.CrossRefGoogle ScholarPubMed
Pascoe, D., Richards, R. J. & James, B. L. (1970). The survival of the daughter sporocysts of Microphallus pygmaeus (Levinson, 1881) (Trematoda: Microphallidae) in a chemically defined medium. The Veliger 13, 157–62.Google Scholar
Popiel, I. & James, B. L. (1978). Variations in the ultrastructure and oxygen consumption of the daughter sporocysts of Cercaria stunkardi, Palombi, 1934 and Cercaria linearis Stunkard, 1932 (Digenea: Opecoelidae) in chemically defined media. Zeitschrift für Parasitenkunde (in the Press).CrossRefGoogle Scholar
Popiel, I. & James, B. L. (1978). The ultrastructure of the daughter sporocyst of Microphallus similis (Jäg., 1900) (Digenea: Microphallidae). Parasitology 76, 359–67.CrossRefGoogle Scholar
Richards, R. J. (1969). Nutrition and respiration of the germinal sacs of marine Digenea. Ph.D. thesis, University College, Swansea.Google Scholar
Richards, R. J. (1970). Variations in oxygen uptake, reduced weight and metabolic rate of starving sporocysts of Microphallus pygmaeus (Levinsen, 1881) (Trematoda: Microphallidae). Journal of Helminthology 44, 75–88.CrossRefGoogle Scholar
Richards, R. J., Pascoe, D. & James, B. L. (1970). The metabolism of the sporocysts of Cercaria dichotoma containing metacercariae, during starvation in sea water and in L-glutamine and glucose solutions. Acta Parasitologica Polonica 18, 347–57.Google Scholar
Richards, R. J., Pascoe, D. & James, B. L. (1972). Variations in the metabolism of the daughter sporocysts of Microphallus pygmaeus in a chemically defined medium. Journal of Helminthology 46, 107–16.CrossRefGoogle Scholar