Results 11 to 20 of about 68,546 (298)
Incorporating the speciation process into species delimitation.
PLoS Computational Biology, 2021 The "multispecies" coalescent (MSC) model that underlies many genomic species-delimitation approaches is problematic because it does not distinguish between genetic structure associated with species versus that of populations within species. Consequently,
Jeet Sukumaran +2 more
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Species Concepts and Species Delimitation [PDF]
Systematic Biology, 2007 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
Kevin de Queiroz
exaly +4 more sources
How to fail at species delimitation [PDF]
Molecular Ecology, 2013 AbstractSpecies delimitation is the act of identifying species‐level biological diversity. In recent years, the field has witnessed a dramatic increase in the number of methods available for delimiting species. However, most recent investigations only utilize a handful (i.e. 2–3) of the available methods, often for unstated reasons.
Bryan C Carstens +2 more
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Species delimitation in the cyanolichen genus Rostania [PDF]
BMC Evolutionary Biology, 2020 Background In this study, we investigate species limits in the cyanobacterial lichen genus Rostania (Collemataceae, Peltigerales, Lecanoromycetes). Four molecular markers (mtSSU rDNA, β-tubulin, MCM7, RPB2) were sequenced and analysed with two coalescent-
Alica Košuthová +3 more
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Effects of phylogenetic reconstruction method on the robustness of species delimitation using single-locus data [PDF]
Methods in Ecology and Evolution, 2014 1. Coalescent-based species delimitation methods combine population genetic and phylogenetic theory to provide an objective means for delineating evolutionarily significant units of diversity.
Barraclough, Timothy G +4 more
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Fast genome-based delimitation of Enterobacterales species.
PLoS ONE, 2023 Average Nucleotide Identity (ANI) is becoming a standard measure for bacterial species delimitation. However, its calculation can take orders of magnitude longer than similarity estimates based on sampling of short nucleotides, compiled into so-called ...
Julie E Hernández-Salmerón +2 more
doaj +4 more sources
Species delimitation in Amblyosyllis (Annelida, Syllidae).
PLoS ONE, 2019 Amblyosyllis is a worldwide distributed group of annelids mainly found in coastal environments. It is well known among the polychaete specialists mostly because of its notable beauty, showing bright colourful patterns and outstanding long and coiled ...
María Teresa Aguado +5 more
doaj +8 more sources
Species delimitation in systematics: inferring diagnostic differences between species
Proceedings of the Royal Society B: Biological Sciences, 2000 Species are fundamental units in studies of systematics, biodiversity and ecology, but their delimitation has been relatively neglected methodologically. Species are typically circumscribed based on the presence of fixed (intraspecifically invariant or non-overlapping) diagnostic morphological characters which distinguish them from other species.
John J Wiens, Maria R Servedio
exaly +4 more sources
The hitchhiker's guide to single‐locus species delimitation
Molecular Ecology Resources, 2018 AbstractMolecular approaches to species delimitation are increasingly used to ascertain the number of species in a sample prior to taxonomic, ecological or physiological studies. Although multilocus approaches are gaining fast in popularity, single‐gene methods still predominate in the literature.
Simon Dellicour, Jean-François Flot
exaly +5 more sources
Species delimitation and geography [PDF]
Molecular Ecology Resources, 2020 Abstract Despite the importance of the geographical arrangement of populations for the inference of species boundaries, only a few approaches that integrate spatial information into species delimitation have thus far been developed. Persistent differentiation of sympatric groups of individuals is the best criterion for species status.
Hausdorf B., Hennig C.
openaire +3 more sources