Advertisement

Hydrobiologia

, Volume 326, Issue 1, pp 111–116 | Cite as

Streblonema (Ectocarpales, Phaeophyceae) infection in the kelp Laminaria saccharina (Laminariales, Phaeophyceae) in the western Baltic

  • Akira F. Peters
  • Britta Schaffelke
3. Special topic: Diseases in seaweeds

Abstract

The brown alga Laminaria saccharina is the dominant subtidal macroalga in Kiel Bay, western Baltic. It is infected by the microscopic brown alga, Streblonema aecidioides. Infected thalli may show symptoms of Streblonema disease, i.e. alterations of blade and stipe, ranging from dark spots to heavy deformations and completely crippled thalli. Samples taken from a single locality all year round show that (i) the host population is infected at a high rate of 87±13% (SD), but that (ii) a considerable proportion of thalli containing Streblonema does not show disease symptoms, and that (iii) juvenile hosts, which mainly appear in autumn, are infected at almost the same rate. Thus the infection seems to occur early in the host's life. Juveniles in nature show fewer symptoms of the disease than adults. Two months after infection, oxygen production and growth in laboratory-raised experimentally infected juvenile hosts was not different from uninfected controls. Experimental thalli showed more severe morphological alterations than uninfected controls only four months after infection. Both field and laboratory observations indicate that a lag phase exists between infection and outbreak of the disease.

Key words

Baltic disease endophyte Laminaria Phaeophyceae seaweed Streblonema 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Andrews, J. H., 1977. Observations on the pathology of seaweeds in the Pacific Northwest. Can. J. Bot. 55: 1019–1027.Google Scholar
  2. Apt, K. E., 1988. Etiology and development of hyperplasia induced by Streblonema sp. (Phaeophyta) on members of the Laminariales (Phaeophyta). J. Phycol. 24: 28–34.Google Scholar
  3. Dangeard, P., 1931. Sur un Ectocarpus parasite provoquant des tumeurs chez le Laminaria fiexicaulis (Ectocarpus deformans nov. sp.). C. R. Acad. Sci., Paris: 57–60.Google Scholar
  4. Dangeard, P., 1970. Réflexions sur quelques Ectocarpales nées en culture et particulierement sur les Streblonema. Botaniste 53: 23–61.Google Scholar
  5. Drew, E. A., 1983. Physiology of Laminaria I. Use of excised lamina discs in short and long term experiments. P. S. Z. N. I: Marine Ecol. 4: 211–226.Google Scholar
  6. Drew, E. A. & W. A. A. Robertson, 1974. A simple field version of the Winkler determination of dissolved oxygen. New Phytol. 73: 793–796.Google Scholar
  7. Förster, K., 1951. Zur Variabilität der Ostseeformen von Laminaria. Kieler Meeresforsch. 8: 244–248.Google Scholar
  8. Jaasund, E., 1963. Beiträge zur Systematik der norwegischen Braunalgen. Bot. mar. 5: 1–8.Google Scholar
  9. Kuckuck, P., 1894. Bemerkungen zur marinen Algenvegetation von Helgoland. I. Wiss. Meeresunters., Biol. Anst. Helgoland, N. F. 1: 223–263.Google Scholar
  10. Lein, T. E., K. Sjøtun & S. Wakili, 1991. Mass-occurrence of a brown filamentous endophyte in the lamina of the kelp Laminaria hyperborea (Gunnerus) Foslie along the southwestern coast of Norway. Sarsia 76: 187–193.Google Scholar
  11. Pedersen, P. M., 1981. The life histories in culture of the brown algae Gononema alariae sp. nov. and G. aecidioides comb. nov. from Greenland. Nord. J. Bot. 1: 263–270.Google Scholar
  12. Peters, A. F., 1991. Field and culture studies of Streblonema macrocystis sp. nov. (Ectocarpales, Phaeophyceae) from Chile, a sexual endophyte of giant kelp. Phycologia 30: 365–377.Google Scholar
  13. Pringsheim, N., 1863. Beiträge zur Morphologie der Meeresalgen. Abh. königl. Akad. Wissensch. Berlin (Physikalische Klasse) 1862: 1–37.Google Scholar
  14. Rosenvinge, L. K., 1893. Grønlands Havalger. Meddr. Grønland 3: 765–981.Google Scholar
  15. Schaffelke, B., A. F. Peters & T. Reusch, 1996. Factors influencing depth distribution of soft bottom Laminaria saccharina (L.) Lamour. in Kiel Fjord, Baltic Sea. Hydrobiologia, 326/327: 117–123.Google Scholar
  16. Setchell, W. A. & N. L. Gardner, 1925. The marine algae of the Pacific coast of North America. Part III. Melanophyceae. Univ. Calif. Pub. Bot. 8: 383–898.Google Scholar
  17. Starr, R. C. & J. A. Zeikus, 1987. UTEX-the culture collection of algae at the University of Texas at Austin. J. Phycol. 23 (Suppl.): 1–47.Google Scholar
  18. Yoshida, T. & K. Akiyama, 1979. Streblonema (Phaeophyceae) infection in the frond of cultivated Undaria (Phaeophyceae). In Jensen, A. & J.R. Stein (eds), Proc. IXth int. Seaweed Symp. Science Press: 219–223.Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Akira F. Peters
    • 1
  • Britta Schaffelke
    • 1
  1. 1.Institut für MeereskundeKielGermany

Personalised recommendations