Limited Mutation-Rate Variation Within the Paramecium aurelia Species Complex
نویسندگان
چکیده
منابع مشابه
Genetic diversity in the Paramecium aurelia species complex.
Current understanding of the population genetics of free-living unicellular eukaryotes is limited, and the amount of genetic variability in these organisms is still a matter of debate. We characterized-reproductively and genetically-worldwide samples of multiple Paramecium species belonging to a cryptic species complex, Paramecium aurelia, whose species have been shown to be reproductively isol...
متن کاملDistribution of species of the Paramecium aurelia complex in Spain.
At present 15 species of the Paramecium aurelia complex are known world-wide (Sonneborn 1975, Aufderheide et al. 1983). Some species are cosmopolitan (P. primaurelia, P. biaurelia, P. tetraurelia, and P. sexaurelia), while others have been found only in single localities (e.g., P. quadecaurelia). Studies concerning their distribution, however, were carried out unevenly in different areas. For i...
متن کاملFactors determining the frequency of the killer trait within populations of the Paramecium aurelia complex.
The factors maintaining the cytoplasmically inherited killer trait in populations of Paramecium tetraurelia and Paramecium biaurelia were examined using, in part, computer simulation. Frequency of the K and k alleles, infection and loss of the endosymbionts, recombination during conjugation and autogamy, cytoplasmic exchange and natural selection were incorporated in a model. Infection during c...
متن کاملNew, world-wide data on the distribution of species of the Paramecium aurelia complex (Ciliophora, Protozoa).
This is the first report on the presence of P. biaurelia in Tasmania, an island that has probably never been investigated before for the occurrence of the P. aurelia species. P. tetraurelia was recorded in Brazil, another very poorly investigated country in terms of this species complex. New stands of P. biaurelia and P. tetraurelia were also recorded in Japan. We present data concerning the oc...
متن کاملNew stands of species of the Paramecium aurelia complex in Africa and Europe.
The relevance of geographical distribution and the roles of dispersal and spatial isolation during the speciation of microorganisms are nowadays of great interest. The Paramecium aurelia species complex is a perfect model system to explore these questions given its long history as a study subject and broad distribution. However, the world-wide distribution of the Paramecium aurelia complex (Cil...
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ژورنال
عنوان ژورنال: G3 Genes|Genomes|Genetics
سال: 2018
ISSN: 2160-1836
DOI: 10.1534/g3.118.200420