de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Relative abundance, rate of increase, and fungal infections of freshwater phytoplankton.

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons56735

Holfeld,  Harald
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Holfeld, H. (2000). Relative abundance, rate of increase, and fungal infections of freshwater phytoplankton. Journal of Plankton Research, 22(5), 987-995.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-DFA2-5
Abstract
Fungal infections of seven species of phytoplankton were examined in relation to the host species' exponential rate of net increase, and to their proportional contribution to the total phytoplankton biovolume. Infections were observed to increase at biovolume proportions of the host species of as low as 1%. In most algal species, infected cells were always found at higher proportions, with the exception of Stephanodiscus rotula and Fragilaria crotonensis. In these two species, high proportions of biovolume were reached without any evidence of infected cells. The increase in infected cells was usually associated with a growing host population, whereas peak and decreasing densities of infected cells were usually observed when host populations were declining. The results show that the fungal parasites can exist on their host population even if it comprises only a small fraction of the total phytoplankton biovolume, and that the parasites become evident while the host population is still increasing.