Microbial food webs in hypertrophic fishponds: Omnivorous ciliate taxa are major protistan bacterivores
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F19%3A43899408" target="_blank" >RIV/60076658:12220/19:43899408 - isvavai.cz</a>
Alternative codes found
RIV/60077344:_____/19:00509653 RIV/25173154:_____/19:N0000008 RIV/60076658:12310/19:43899408 RIV/62156489:43210/19:43915969
Result on the web
<a href="https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lno.11260" target="_blank" >https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lno.11260</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/lno.11260" target="_blank" >10.1002/lno.11260</a>
Alternative languages
Result language
angličtina
Original language name
Microbial food webs in hypertrophic fishponds: Omnivorous ciliate taxa are major protistan bacterivores
Original language description
Despite the importance of shallow lakes worldwide, knowledge of microbial components, the base of their food webs, remains scarce. To close this gap, we investigated planktonic microbial food webs, in particular protistan bacterivory (for both ciliates and heterotrophic nanoflagellates [HNF]), in 10 shallow hypertrophic fishponds in South Bohemia (Czech Republic). We used fluorescently labeled bacteria as bacterivory tracers to estimate how abundant protistan populations in fishponds (4-25 x 10(3) HNF mL(-1) and 55-770 ciliates mL(-1)) contribute to total bacterial mortality. Fluorescence microscopy, innovative image processing tools, and quantitative protargol staining were combined to detect major bacterivorous and omnivorous ciliate taxa. We quantified bacterial production, bacterivory by individual ciliate species, total ciliates, and total protistan bacterivory in all fishponds. On average, ciliate bacterivory was comparable to that of HNF, accounting for 56% and 44% of total protistan grazing, respectively. We found that primarily bacterivorous Peritrichia (genera Vorticella, Epistylis) and Scuticociliata (Cyclidium spp.) contributed only moderately (mean 26%) to total ciliate bacterivory. Unexpectedly, but highly abundant omnivorous Halteria/Pelagohalteria (Stichotrichia) and, to a lesser extent, also omnivorous Rimostrombidium spp. (Oligotrichia) contributed significantly more (mean 71%) to total ciliate bacterivory than typical bacterivorous taxa. This suggests that unselective grazers, which feed on a broader size spectrum from bacteria to small algae, may have a considerable competitive advantage in hypertrophic environments rich in small particles. Moreover, a meta-analysis of available literature data supports our hypothesis that the role of ciliate bacterivory increases significantly, relative to HNF bacterivory, along a trophic gradient toward hypertrophic habitats.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
<a href="/en/project/GA17-09310S" target="_blank" >GA17-09310S: Fishponds as models for exploring plankton diversity and dynamics of hypertrophic shallow lakes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Limnology and Oceanography
ISSN
0024-3590
e-ISSN
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Volume of the periodical
64
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
2295-2309
UT code for WoS article
000479500300001
EID of the result in the Scopus database
2-s2.0-85071859856