Species delimitation within the colonial flagellates Uroglena, Uroglenopsis and Urostipulosphaera (Chrysophyceae)
نویسندگان
چکیده
منابع مشابه
Species Concepts and Species Delimitation
— The issue of species delimitation has long been confused with that of species conceptualization, leading to a half century of controversy concerning both the definition of the species category and methods for inferring the boundaries and numbers of species. Alternative species concepts agree in treating existence as a separately evolving metapopulation lineage as the primary defining property...
متن کاملSpecies concepts and species delimitation.
The issue of species delimitation has long been confused with that of species conceptualization, leading to a half century of controversy concerning both the definition of the species category and methods for inferring the boundaries and numbers of species. Alternative species concepts agree in treating existence as a separately evolving metapopulation lineage as the primary defining property o...
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A defining feature of species is that their constituting populations are connected by gene flow. However, interspecific gene flow (introgression) can affect species integrity. If some genome components were less prone to introgression than others, they should be particularly suitable to delimitate species. Recent simulation studies have predicted a negative correlation between intra- and inters...
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from 1950s onward, new theories and critical approaches burgeoned across humanities. these theories were context-oriented; as a result, the analysis of discursive practices gained significance. thus, social, political, historical and cultural discourses that have been hitherto marginalized and considered inferior to literary texts, were introduced as important texts to be analyzed by critics. o...
The Genealogical Sorting Index and species delimitation
13 The Genealogical Sorting Index (gsi) has been widely used in species-delimitation studies, where 14 it is usually interpreted as a measure of the degree to which each of several predefined groups of 15 specimens display a pattern of divergent evolution in a phylogenetic tree. Here we show that the gsi 16 value obtained for a given group is highly dependent on the structure of the tree outsid...
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ژورنال
عنوان ژورنال: European Journal of Phycology
سال: 2021
ISSN: 0967-0262,1469-4433
DOI: 10.1080/09670262.2021.1892196