Intraclonal variation in propensity for mixis in several rotifers: variation among females and with maternal age

摘要: In 14 previously published experiments with clones of three species Brachionus, Epiphanes ukera, and Rhinoglena frontalis, females cultured singly in small volumes from birth through most their reproductive period usually produced some mictic daughters. Here, these data are analyzed to test two hypotheses: the propensity a clone produce daughters will vary significantly among females, decrease female age. Significant heterogeneity (χ2) replicate was demonstrated B. calyciflorus Florida, single this Georgia, Texas, Spain, Australia, angularis Argentina, E. ukera R. frontalis Germany. No significant found other Florida variabilis Spain. could be caused by chance fluctuations during development, differences order, or epimutations. This is an important component bet-hedging strategy balance production diapausing fertilized eggs future population growth parthenogenesis. The did not her six different four strains calyciflorus, only one showed variation (ANOVA) proportion successive one- two-day periods. increased maternal