caa a22 4500 445845767 CHVBK 20180317145358.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10709-011-9571-3 doi (NATIONALLICENCE)springer-10.1007/s10709-011-9571-3 On the nature of species: insights from Paramecium and other ciliates [Elektronische Daten] [Meaghan Hall, Laura Katz] The multiple species concepts currently in use by the scientific community (e.g. Morphological, Biological, Phylogenetic) are united in that they all aim to capture the process of divergence between populations. For example, the Biological Species Concept defines a species as a natural group of organisms that is reproductively isolated from other such groups. Here we synthesize nearly a century of research on the ciliate genus Paramecium that highlights the shortcomings of our prevailing notions on the nature of species. In this lineage, there is discordance between morphology, mating behavior, and genetics, features assumed to be correlated, at least after sufficient time has passed, under all species concepts. Intriguingly, epigenetic phenomena are well documented in ciliates where they influence features such as germline/soma differentiation and mating type determination. Consequently, we hypothesize that divergence within ciliate populations is due to a dynamic interaction between genetic and epigenetic factors. The growing list of examples of epigenetic phenomena that potentially impact speciation (i.e. by influencing the dynamics of sex chromosomes, fate of hybrids, zygotic drive and genomic conflicts) suggests that interactions between genetics and epigenetics may also drive divergence in other eukaryotic lineages. Springer Science+Business Media B.V., 2011 Species concepts nationallicence Paramecium nationallicence Epigenetics nationallicence Ciliates nationallicence Molecular evolution nationallicence Hall Meaghan Department of Biological Sciences, Smith College, 01063, Northampton, MA, USA aut Katz Laura Department of Biological Sciences, Smith College, 01063, Northampton, MA, USA aut Genetica Springer Netherlands 139/5(2011-05-01), 677-684 0016-6707 139:5<677 2011 139 10709 https://doi.org/10.1007/s10709-011-9571-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10709-011-9571-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hall Meaghan Department of Biological Sciences, Smith College, 01063, Northampton, MA, USA aut NATIONALLICENCE 700 1- Katz Laura Department of Biological Sciences, Smith College, 01063, Northampton, MA, USA aut NATIONALLICENCE 773 0- Genetica Springer Netherlands 139/5(2011-05-01), 677-684 0016-6707 139:5<677 2011 139 10709 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer