Genetic diversity in the Paramecium aurelia species complex

Francesco Catania, François Wurmser, Alexey A. Potekhin, Ewa Przyboś, Michael Lynch

Результат исследований: Научные публикации в периодических изданияхстатья

66 Цитирования (Scopus)

Аннотация

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 isolated. We found that levels of genetic diversity both in the nucleus and in the mitochondrion are substantial within groups of reproductively compatible P. aurelia strains but drop considerably when strains are partitioned according to their phylogenetic groupings. Our study reveals the existence of discrepancies between the mating behavior of a number of P. aurelia strains and their multilocus genetic profile, a controversial finding that has major consequences for both the current methods of species assignment and the species problem in the P. aurelia complex.

Язык оригиналаанглийский
Страницы (с-по)421-431
Число страниц11
ЖурналMolecular Biology and Evolution
Том26
Номер выпуска2
DOI
СостояниеОпубликовано - 1 фев 2009

Предметные области Scopus

  • Экология, эволюция поведение и систематика
  • Молекулярная биология
  • Генетика

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