AI Article Synopsis
- Many organisms experience fluctuations in population sizes due to predator-prey interactions, which are well-studied in model systems like rotifer-algae communities.
- The research focused on how different sexual propensities among cyclical parthenogens (CPs) and obligate parthenogens (OPs) influence these population dynamics.
- Findings revealed that OPs had larger population cycle amplitudes at low nutrient levels, indicating that reproductive modes may play a crucial role in understanding population oscillations.
Article Abstract
Many organisms display oscillations in population size. Theory predicts that these fluctuations can be generated by predator-prey interactions, and empirical studies using life model systems, such as a rotifer-algae community consisting of as predator and as prey, have been successfully used for studying such dynamics. is a cyclical parthenogen (CP) and clones often differ in their sexual propensity, that is, the degree to which they engage into sexual or asexual (clonal) reproduction. Since sexual propensities can affect growth rates and population sizes, we hypothesized that this might also affect population oscillations. Here, we studied the dynamical behaviour of clones representing either CPs (regularly inducing sex) or obligate parthenogens (OPs). We found that the amplitudes of population cycles to be increased in OPs at low nutrient levels. Several other population dynamic parameters seemed unaffected. This suggests that reproductive mode might be an important additional variable to be considered in future studies of population oscillations.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7594307 | PMC |
| http://dx.doi.org/10.1002/1438-390X.1017 | DOI Listing |
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