Acta Parasitologica

, Volume 53, Issue 3, pp 312–314 | Cite as

Nanobacteria associated with mucous intestines of freshwater fishes and tegument of their parasites (Cestoda)

Research Note

Abstract

The teguments of four cestode species (Triaenophorus nodulosus, Proteocephalus torulosus, P. percae, P. cernuae) and the intestines of their freshwater fish hosts (Esox lucius, Barbatula barbatula, Perca fluviatilis, Gymnocephalus cernuus) inhabited by bacteria have been investigated with scanning electron microscopy. Most of the bacteria have sizes very similar to nanobacteria (that is, 0.25–0.3 μm in diameter). At least 4 microbial morphotypes were identified. These observations indicate that the normal indigenous microflora in cestodes and their fish hosts, associated with the digestive transport surfaces and consist of bacteria and nanobacteria.

Keywords

Cestoda nanobacteria fishes digestion 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aho J.M., Uglem G.L., Moore J.P., Larson O.R. 1991. Bacteria associated with the tegument of Clinostomum marginatum (Digenea). Journal of Parasitology, 77, 784–786. DOI: 10.2307/3282717.PubMedCrossRefGoogle Scholar
  2. Bakke T.A., Cable J., Østbø M. 2006. The ultrastructure of hypersymbionts on the monogenean Gyrodactylus salaris infecting Atlantic salmon Salmo salar. Journal of Helminthology, 80, 377–386. DOI: 10.1017/JOH2006368.PubMedCrossRefGoogle Scholar
  3. Cable J., Tinsley R.C. 1991. Microsporidian hyperparasites and bacteria associated with Pseudodiplorchis americanus (Monogenea: Polystomatidae). Canadian Journal of Zoology, 70, 523–529. DOI: 10.1139/z92-079.CrossRefGoogle Scholar
  4. El-Naggar M.M., Kearn G.C. 1989. Haptor glands in the gill-parasitic ancerocephaline monogenean Cichlidogyrus halli typicus and the report of possible prokaryotic symbiont. International Journal for Parasitolology, 5, 401–408. DOI: 10.1016/0020-7519(89)90096-9.CrossRefGoogle Scholar
  5. Hughes-Stamm S.R., Cribb T.H., Jones M.K. 1999. Structure of the tegument and ectocommensal microorganisms of Gyliauchen nahaensis (Digenea: Gyliauchenidae), an inhabitant of herbivorous fish of the great barrier reef, Australia. Journal of Parasitology, 85, 1047–1052. DOI: 10.2307/3285667.PubMedCrossRefGoogle Scholar
  6. Izvekova G.I. 2003. Proteolytic activity of microflora associated with the digestive-transport surfaces of intestine of the burbot Lota lota and of Eubothrium rugosum parasitized in it. Journal of Evolutionary Biochemistry and Physiology, 39, 529–536. DOI: 10.1023/B:JOEY.0000015960.83715.8a.CrossRefGoogle Scholar
  7. Izvekova G.I. 2005a. Hydrolytic activity of enzymes of microflora associated with digestive transport surfaces of pike intestine and Triaenophorus nodulosus (Cestoda, Pseudophyllidea) parasitizing in it. Journal of Evolutionary Biochemistry and Physiology, 41, 185–193. DOI: 10.1007/s10893-005-0053-z.CrossRefGoogle Scholar
  8. Izvekova G.I. 2005b. Activity of carbohydrases of symbiotic microflora and their role in processes of digestion of fish and their parasitizing cestodes (on the example of pike and Triaenophorus nodulosus). Journal of Evolutionary Biochemistry and Physiology, 41, 406–414. DOI: 10.1007/s10893-005-0076-5.CrossRefGoogle Scholar
  9. Izvekova G.I., Komova A.V. 2005. The role of α-amylase of symbiotic microflora in digestion by lower cestodes and their fish hosts. Biology Bulletin, 32, 167–171. DOI: 10.1007/s10525-005-0025-2.CrossRefGoogle Scholar
  10. Poddubnaya L.G., Izvekova G.I. 2005. Detection of bacteria associated with the tegument of caryophyllidean cestodes. Helminthologia, 42, 9–14.Google Scholar
  11. Steering Group for the Workshop on Size Limits of Very Small Microorganisms. 1999. Proceedings of a Workshop, National Academy Press, Washington, D.C., 164 pp.Google Scholar

Copyright information

© © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  1. 1.Department of Ecological ParasitologyInstitute for Biology of Inland Waters RASBorok, YaroslavlRussia

Personalised recommendations