Results 31 to 40 of about 69,851 (348)

Molecular species delimitation of shrub frogs of the genus Pseudophilautus (Anura, Rhacophoridae).

open access: yesPLoS ONE, 2021
Sri Lanka is an amphibian hotspot of global significance. Its anuran fauna is dominated by the shrub frogs of the genus Pseudophilautus. Except for one small clade of four species in Peninsular India, these cool-wet adapted frogs, numbering some 59 ...
Gajaba Ellepola   +6 more
doaj   +1 more source

Effects of phylogenetic reconstruction method on the robustness of species delimitation using single-locus data [PDF]

open access: yes, 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
core   +2 more sources

Species Concepts and Species Delimitation [PDF]

open access: yesSystematic 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
openaire   +3 more sources

How to fail at species delimitation [PDF]

open access: yesMolecular 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   +3 more
openaire   +2 more sources

Delimitation despite discordance: Evaluating the species limits of a confounding species complex in the face of mitonuclear discordance

open access: yesEcology and Evolution, 2021
The delimitation of species is an essential pursuit of biology, and proper taxonomies are crucial for the assessment and conservation management of organismal diversity.
Thomas J. Firneno Jr.   +5 more
doaj   +1 more source

Deciphering the Taxonomic Delimitation of Ottelia acuminata (Hydrocharitaceae) Using Complete Plastomes as Super-Barcodes

open access: yesFrontiers in Plant Science, 2021
Accurate species delimitation and identification, which is a challenging task in traditional morphology-based taxonomy, is crucial to species conservation.
Yunheng Ji   +8 more
doaj   +1 more source

Coalescent-based species delimitation in the sand lizards of the Liolaemus wiegmannii complex (Squamata: Liolaemidae) [PDF]

open access: yes, 2019
Coalescent-based algorithms coupled with the access to genome-wide data have become powerful tools forassessing questions on recent or rapid diversification, as well as delineating species boundaries in the absence of reciprocal monophyly.
Abdala   +118 more
core   +1 more source

Delimiting Species without Monophyletic Gene Trees [PDF]

open access: yesSystematic Biology, 2007
Genetic data are frequently used to delimit species, where species status is determined on the basis of an exclusivity criterium, such as reciprocal monophyly. Not only are there numerous empirical examples of incongruence between the boundaries inferred from such data compared to other sources like morphology -- especially with recently derived ...
L Lacey, Knowles, Bryan C, Carstens
openaire   +2 more sources

Integrative taxonomy by molecular species delimitation: multi-locus data corroborate a new species of Balkan Drusinae micro-endemics

open access: yesBMC Evolutionary Biology, 2017
Background Taxonomy offers precise species identification and delimitation and thus provides basic information for biological research, e.g. through assessment of species richness.
Simon Vitecek   +10 more
doaj   +1 more source

Evolution of microgastropods (Ellobioidea, Carychiidae): integrating taxonomic, phylogenetic and evolutionary hypotheses [PDF]

open access: yes, 2013
BACKGROUND: Current biodiversity patterns are considered largely the result of past climatic and tectonic changes. In an integrative approach, we combine taxonomic and phylogenetic hypotheses to analyze temporal and geographic diversification of epigean (
Adrienne Jochum   +6 more
core   +1 more source

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