Advanced search
1 file | 1.96 MB Add to list

Effects of eukaryotic pathogens (Chytridiomycota and Oomycota) on marine benthic diatom communities in the Solthörn tidal flat (southern North Sea, Germany)

(2016) EUROPEAN JOURNAL OF PHYCOLOGY. 51(3). p.253-269
Author
Organization
Abstract
The presence of eukaryotic parasites (i.e. chytridiomycetes and oomycetes) infecting benthic marine diatoms was revealed by a reconnaissance survey in the Solthorn tidal flat (southern North Sea, Germany) followed by 5 months of regular monitoring in order to assess the impact of these zoosporic fungal pathogens on microphytobenthic diatom communities. Additionally, variation of environmental factors such as sediment composition and nutrient concentrations were monitored. Pre-treatment of sediment samples using short ultrasound pulses and gradient centrifugation, in combination with CalcoFluor White, were used for the visualization of both pathogen groups. The highest prevalence of infected benthic diatoms was observed in late September (6.3% of the total benthic diatom community), correlating with the highest abundance of benthic diatoms recorded during the survey (6.5 +/- 1.3 x 10(4) cells cm(-2)). Most infections were caused by chytrids (up to 99.8%) and, only in a few cases, by oomycetes. The analysis of individual host abundances/infection prevalence showed in most cases a decline in cell numbers of the host species with increasing numbers of the eukaryotic parasite. Several shifts in the diatom community composition were observed. Statistical analysis revealed that the abundance of the benthic diatom hosts and their parasites was related to seasonal variation in temperature, irradiance and nutrient availability, particularly of dissolved inorganic nitrogen.
Keywords
Bacillariophyceae, benthic diatoms, chytrids, community compositions, environmental variables, microphytobenthos, oomycetes, FOOD-WEB DYNAMICS, INTERTIDAL MUDFLAT, FUNGAL PARASITES, HOST-PARASITE, EURYCHASMA-DICKSONII, MOLECULAR PHYLOGENY, CHYTRID INFECTIONS, GENETIC DIVERSITY, ZOOSPORIC FUNGI, PHYTOPLANKTON

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.96 MB

Citation

Please use this url to cite or link to this publication:

MLA
Scholz, Bettina et al. “Effects of Eukaryotic Pathogens (Chytridiomycota and Oomycota) on Marine Benthic Diatom Communities in the Solthörn Tidal Flat (southern North Sea, Germany).” EUROPEAN JOURNAL OF PHYCOLOGY 51.3 (2016): 253–269. Print.
APA
Scholz, B., Küpper, F. C., Vyverman, W., & Karsten, U. (2016). Effects of eukaryotic pathogens (Chytridiomycota and Oomycota) on marine benthic diatom communities in the Solthörn tidal flat (southern North Sea, Germany). EUROPEAN JOURNAL OF PHYCOLOGY, 51(3), 253–269.
Chicago author-date
Scholz, Bettina, Frithjof C Küpper, Wim Vyverman, and Ulf Karsten. 2016. “Effects of Eukaryotic Pathogens (Chytridiomycota and Oomycota) on Marine Benthic Diatom Communities in the Solthörn Tidal Flat (southern North Sea, Germany).” European Journal of Phycology 51 (3): 253–269.
Chicago author-date (all authors)
Scholz, Bettina, Frithjof C Küpper, Wim Vyverman, and Ulf Karsten. 2016. “Effects of Eukaryotic Pathogens (Chytridiomycota and Oomycota) on Marine Benthic Diatom Communities in the Solthörn Tidal Flat (southern North Sea, Germany).” European Journal of Phycology 51 (3): 253–269.
Vancouver
1.
Scholz B, Küpper FC, Vyverman W, Karsten U. Effects of eukaryotic pathogens (Chytridiomycota and Oomycota) on marine benthic diatom communities in the Solthörn tidal flat (southern North Sea, Germany). EUROPEAN JOURNAL OF PHYCOLOGY. 2016;51(3):253–69.
IEEE
[1]
B. Scholz, F. C. Küpper, W. Vyverman, and U. Karsten, “Effects of eukaryotic pathogens (Chytridiomycota and Oomycota) on marine benthic diatom communities in the Solthörn tidal flat (southern North Sea, Germany),” EUROPEAN JOURNAL OF PHYCOLOGY, vol. 51, no. 3, pp. 253–269, 2016.
@article{8507395,
  abstract     = {The presence of eukaryotic parasites (i.e. chytridiomycetes and oomycetes) infecting benthic marine diatoms was revealed by a reconnaissance survey in the Solthorn tidal flat (southern North Sea, Germany) followed by 5 months of regular monitoring in order to assess the impact of these zoosporic fungal pathogens on microphytobenthic diatom communities. Additionally, variation of environmental factors such as sediment composition and nutrient concentrations were monitored. Pre-treatment of sediment samples using short ultrasound pulses and gradient centrifugation, in combination with CalcoFluor White, were used for the visualization of both pathogen groups. The highest prevalence of infected benthic diatoms was observed in late September (6.3% of the total benthic diatom community), correlating with the highest abundance of benthic diatoms recorded during the survey (6.5 +/- 1.3 x 10(4) cells cm(-2)). Most infections were caused by chytrids (up to 99.8%) and, only in a few cases, by oomycetes. The analysis of individual host abundances/infection prevalence showed in most cases a decline in cell numbers of the host species with increasing numbers of the eukaryotic parasite. Several shifts in the diatom community composition were observed. Statistical analysis revealed that the abundance of the benthic diatom hosts and their parasites was related to seasonal variation in temperature, irradiance and nutrient availability, particularly of dissolved inorganic nitrogen.},
  author       = {Scholz, Bettina and Küpper, Frithjof C and Vyverman, Wim and Karsten, Ulf},
  issn         = {0967-0262},
  journal      = {EUROPEAN JOURNAL OF PHYCOLOGY},
  keywords     = {Bacillariophyceae,benthic diatoms,chytrids,community compositions,environmental variables,microphytobenthos,oomycetes,FOOD-WEB DYNAMICS,INTERTIDAL MUDFLAT,FUNGAL PARASITES,HOST-PARASITE,EURYCHASMA-DICKSONII,MOLECULAR PHYLOGENY,CHYTRID INFECTIONS,GENETIC DIVERSITY,ZOOSPORIC FUNGI,PHYTOPLANKTON},
  language     = {eng},
  number       = {3},
  pages        = {253--269},
  title        = {Effects of eukaryotic pathogens (Chytridiomycota and Oomycota) on marine benthic diatom communities in the Solthörn tidal flat (southern North Sea, Germany)},
  url          = {http://dx.doi.org/10.1080/09670262.2015.1134814},
  volume       = {51},
  year         = {2016},
}

Altmetric
View in Altmetric
Web of Science
Times cited: