Kill the Winner hypothesis

The "Kill the Winner" hypothesis (KTW) is a model of population growth involving prokaryotes, viruses and protozoans. It is based on the concept of prokaryotes taking one of two reactions to limited resources: "competition", that is, that priority directed to growth of the population, or a "winner"; and "defense", where the resources are directed to survival against attacks. It is then assumed that the better strategy for a phage, or virus which attacks prokaryotes, is to concentrate on the "winner", the most active population (possibly the most abundant). This tends to moderate the relative populations of the prokaryotes, rather than the "winner take all". The model is related to the Lotka–Volterra equations.

See also

• Coexistence theory
• Community matrix
• Population dynamics
• Janzen–Connell hypothesis
• Paradox of enrichment

References

• "Trade-Offs between Competition and Defense Specialists among Unicellular Organisms: The "Killing the Winner" Hypothesis Revisited". Microbiology and Molecular Biology Reviews. 74 (1): 42–57. 2010. doi:10.1128/MMBR.00034-09. PMC 2832346. PMID 20197498. {{cite journal}}: Cite uses deprecated parameter |authors= (help)
• "Population cycles and species diversity in dynamic Kill-the-Winner model of microbial ecosystems". Scientific Reports. 7. 2017. doi:10.1038/srep39642. PMC 5209715. PMID 28051127. {{cite journal}}: Cite uses deprecated parameter |authors= (help)
• T. Frede Thingstad (2000). "Elements of a theory for the mechanisms controlling abundance, diversity, and biogeochemical role of lytic bacterial viruses in aquatic systems". Limnology Oceanology. 45 (6): 1320–1328. doi:10.4319/lo.2000.45.6.1320.