Results 11 to 20 of about 24,438 (293)

Genomic DNA barcodes provide novel insights into species delimitation in the complex Camellia sect. Thea (Theaceae) [PDF]

open access: yesBMC Plant Biology
Background Species delimitation within Camellia sect. Thea is taxonomically challenging due to its complex evolutionary history. This study aims to utilize nuclear and chloroplast data as genomic DNA barcodes to delimit species within this economically ...
Zongfang Shen   +9 more
doaj   +2 more sources

Species Delimitation Methods Facilitate the Identification of Cryptic Species Within the Broadly Distributed Species in Homoeocerus (Tliponius) (Insecta: Hemiptera: Coreidae) [PDF]

open access: yesInsects
Widespread species may exhibit considerable genetic variation among populations due to their extensive distribution ranges, and may even give rise to new species in remote areas.
Jingyu Liang   +8 more
doaj   +2 more sources

To be or not to be… Integrative taxonomy and species delimitation in the daddy long-legs spiders of the genus Physocyclus (Araneae, Pholcidae) using DNA barcoding and morphology [PDF]

open access: yesZooKeys, 2022
Integrative taxonomy is crucial for discovery, recognition, and species delimitation, especially in underestimated species complex or cryptic species, by incorporating different sources of evidence to construct rigorous species hypotheses.
Samuel Nolasco   +1 more
doaj   +3 more sources

Species boundaries in the messy middle—A genome‐scale validation of species delimitation in a recently diverged lineage of coastal fog desert lichen fungi

open access: yesEcology and Evolution, 2021
Species delimitation among closely related species is challenging because traditional phenotype‐based approaches, for example, using morphology, ecological, or chemical characteristics, may not coincide with natural groupings.
Jesse Jorna   +13 more
doaj   +1 more source

Cryptic Species Diversity and Phylogenetic Relationship in the Rust Genus Chrysomyxa from China

open access: yesJournal of Fungi, 2022
Chrysomyxa rusts are fungal pathogens widely distributed in the Northern hemisphere, causing spruce needle and cone rust diseases, and they are responsible for significant economic losses in China.
Rui Wang   +2 more
doaj   +1 more source

The hyperdominant tropical tree Eschweilera coriacea (Lecythidaceae) shows higher genetic heterogeneity than sympatric Eschweilera species in French Guiana [PDF]

open access: yesPlant Ecology and Evolution, 2020
Background and aims – The evolutionary history of Amazonia’s hyperabundant tropical tree species, also known as “hyperdominant” species, remains poorly investigated. We assessed whether the hyperdominant Eschweilera coriacea (DC.) S.A.Mori (Lecythidaceae)
Myriam Heuertz   +12 more
doaj   +3 more sources

Homoplasy as an Auxiliary Criterion for Species Delimitation [PDF]

open access: yesMicroorganisms, 2021
Homoplasy is a sort of noise in phylogenetic reconstructions, due to the accumulation of backmutations, convergent evolution and horizontal gene transfer (HGT), which is considered the major trigger of homoplasy in microorganism for its massive presence.
Angela Conti   +4 more
openaire   +3 more sources

Phylogenomic Assessment of Biodiversity Using a Reference-Based Taxonomy: An Example With Horned Lizards (Phrynosoma)

open access: yesFrontiers in Ecology and Evolution, 2021
Phylogenomic investigations of biodiversity facilitate the detection of fine-scale population genetic structure and the demographic histories of species and populations.
Adam D. Leaché   +7 more
doaj   +1 more source

Excluding spatial sampling bias does not eliminate oversplitting in DNA‐based species delimitation analyses

open access: yesEcology and Evolution, 2021
DNA barcoding and DNA‐based species delimitation are major tools in DNA taxonomy. Sampling has been a central debate in this context, because the geographical composition of samples affects the accuracy and performance of DNA barcoding.
Daniel Lukic   +4 more
doaj   +1 more source

Delimiting Species in Recent Radiations [PDF]

open access: yesSystematic Biology, 2007
Despite considerable effort from the systematics community, delimiting species boundaries in recent radiations remains a daunting challenge. We argue that genealogical approaches, although sometimes useful, may not solve this important problem, because recently derived species often have not had sufficient time to achieve monophyly. Instead, we suggest
H Bradley, Shaffer, Robert C, Thomson
openaire   +2 more sources

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