1887

Abstract

Summary: The rumen flagellate showed a significant increase in population density 1 to 2 h after the host sheep commenced feeding, followed by a reduction in numbers to the pre-feeding level after a further 2 to 3 h. The life-history of the organism was shown to consist of a motile flagellate which germinated to produce a vegetative stage comprising a limited rhizoidal system on which up to three reproductive bodies were borne together with () other spherical bodies of unknown function; , the reproductive bodies were stimulated to liberate flagellates by a component of the diet of the host. The vegetative stage strongly resembled that of certain species of aquatic phycomycete fungi, and the flagellates may therefore be zoospores. Flagellates liberated lost their motility within 2 to 3 h and developed into the reproductive vegetative phase, producing a rapid decrease in numbers of flagellates. Conditions of maximum flagellate production (pH 6.5, 39 °C, presence of CO, absence of oxygen) approximated to those found in the rumen. The organism was cultured in an undefined medium in the absence of bacteria and other flagellates.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-94-2-270
1976-06-01
2024-12-08
Loading full text...

Full text loading...

/deliver/fulltext/micro/94/2/mic-94-2-270.html?itemId=/content/journal/micro/10.1099/00221287-94-2-270&mimeType=html&fmt=ahah

References

  1. Abou Akkada A.R., Bartley E.E., Berube R., Fina L.R., Meyer R.M., Hendricks D., Julius F. 1968; Simple method to remove completely ciliate protozoa from adult ruminants. Applied Microbiology 16:1475–1477
    [Google Scholar]
  2. Becker E.R., Talbot M. 1927; The protozoan fauna of the rumen and reticulum of American cattle. Iowa State College Journal of Science 1:345–365
    [Google Scholar]
  3. Braune R. 1913; Untersuchungen über die im Wiederkäuermagen vorkommenden Protozoen. Archiv für Protistenkunde 32:111–170
    [Google Scholar]
  4. Das Gupta M. 1935; Preliminary observations on the protozoan fauna of the Indian goat, Capra hirens Linn. Archiv für Protistenkunde 85:153–172
    [Google Scholar]
  5. Hungate R.E. 1966 The Rumen and its Microbes. New York: Academic;
    [Google Scholar]
  6. Jensen E.A., Hammond D.M. 1964; A morphological study of trichomonads and related flagellates from the bovine digestive tract. Journal of Protozoology 11:386–394
    [Google Scholar]
  7. Kudo R.R. 1954 Protozoology, 4th edn.. Springfield, Illinois: Thomas;
    [Google Scholar]
  8. Levine N.D. 1961 Protozoan Parasites of Domestic Animals and of Man. Minneapolis: Burgess Publishing;
    [Google Scholar]
  9. Liebetanz E. 1910; Die parasitischen Protozoen des Widerkäuermagens. Archiv für Protistenkunde 19:19
    [Google Scholar]
  10. Lubinsky G. 1955a; On some parasites of parasitic protozoa. I.Sphaerita hoari, sp.n. -a chytrid parasitising Eremoplastron bovis. Canadian Journal of Microbiology 1:440–450
    [Google Scholar]
  11. Lubinsky G. 1955b; On some parasites of parasitic protozoa. II.Saggitospora cameroni gen. n., sp.n. -a phycomycete parasiting Ophryoscolecidae. Canadian Journal of Microbiology 1:675–684
    [Google Scholar]
  12. Orpin C.G. 1974a; The rumen flagellate Callimastrix frontalis: does sequestration occur ?. Journal of General Microbiology 84:395–398
    [Google Scholar]
  13. Orpin C.G. 1974b; The rumen flagellates Callimastix frontalis and Monas comumnis - zoospores of Phycomycete fungi. Journal of Applied Bacteriology 37(4):ix–x
    [Google Scholar]
  14. Orpin C.G. 1975; Studies on the rumen flagellate Neocallimastix frontalis. Journal of General Microbiology 91:249–262
    [Google Scholar]
  15. Sparrow F.K.Jr. 1960 Aquatic Phycomycetes, 2nd. Ann Arbor: University of Michigan Press;
    [Google Scholar]
  16. Warner A.C.I. 1966; Diurnal changes in the concentrations of micro-organisms in the rumens of sheep fed limited diets once daily. Journal of General Microbiology 45:213–235
    [Google Scholar]
  17. Wenyon C.M. 1926 Protozoology. New York: William Wood;
    [Google Scholar]
/content/journal/micro/10.1099/00221287-94-2-270
Loading
/content/journal/micro/10.1099/00221287-94-2-270
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error