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| Registros recuperados: 15 | |
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| Rojas, Rommel R.; Fouquet, Antoine; Ron, Santiago R.; Hernandez-ruz, Emil Jose; Melo-sampaio, Paulo R.; Chaparro, Juan C.; Vogt, Richard C.; De Carvalho, Vinicius Tadeu; Pinheiro, Leandra Cardoso; Avila, Robson W.; Farias, Izeni Pires; Gordo, Marcelo; Hrbek, Tomas. |
| Amphibians are probably the most vulnerable group to climate change and climate-change associate diseases. This ongoing biodiversity crisis makes it thus imperative to improve the taxonomy of anurans in biodiverse but understudied areas such as Amazonia. In this study, we applied robust integrative taxonomic methods combining genetic (mitochondrial 16S, 12S and COI genes), morphological and environmental data to delimit species of the genus Amazophrynella (Anura: Bufonidae) sampled from throughout their pan-Amazonian distribution. Our study confirms the hypothesis that the species diversity of the genus is grossly underestimated. Our analyses suggest the existence of eighteen linages of which seven are nominal species, three Deep Conspecific Lineages, one... |
| Tipo: Text |
Palavras-chave: Integrative taxonomy; Cryptic diversity; Species delimitation; Amphibians; Amazon. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00660/77219/78676.pdf |
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| Bignotto,Thaís Souto; Maniglia,Thiago Cintra; Gomes,Vivian Nunes; Oliveira,Isadora Janolio de; Agostinho,Carlos Sérgio; Prioli,Sônia Maria Alves Pinto; Prioli,Alberto José. |
| Abstract Mitochondrial molecular markers (DNA sequences of D-loop, cytochrome b and cytochrome c oxidase I) were employed to characterize populations of the piranha Serrasalmus maculatus from Upper Paraná, Upper Paraguay and Tocantins River basins. D-loop sequences of S. maculatus population from Paraná-Paraguay River basin exhibited tandem repeats of short motifs (12 base pairs) and variable numbers depending on specimens, accounting for length variation. Concatenated mitochondrial sequences suggested that S. maculatus encompasses different mitochondrial DNA lineages. Although sampling was restricted to three river basins, phylogenetic analysis clearly indicated that the species currently recognized as S. maculatus presents high genetic variability.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryptic species; Species delimitation; D-loop; Cytochrome b; Cytochrome c oxidase I. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100801 |
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| Francuski, Lj.; Vujic, A.; Kovacevic, A.; Ludoski, J.; Milankov, V.. |
| The present study investigates phenotypic differentiation patterns among four species of the Cheilosia variabilis group (Diptera, Syrphidae) using a landmark-based geometric morphometric approach. Herein, wing geometric morphometrics established species boundaries that confirm C. melanopa and C. redi stat. nov. as evolutionarily independent entities or separate species within the previously described C. melanopa species. Seventeen samples of C. lasiopa, C. variabilis, C. melanopa and C. redi from 11 localities on the Balkan Peninsula were analysed. Based on wing shape and size, both species boundaries and intraspecific divergent units were delineated indicating the possible presence of evolutionarily independent units within the analysed taxa. Significant... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cheilosia variabilis group; Geometric morphometrics; Intraspecific divergent units; Species delimitation; Wing shape; Wing size; 42.75. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/320197 |
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| Zamora, J.C.; Calonge, F.D.; Martín, M.P.. |
| A revision of the classification of Geastrum sect. Geastrum is presented on the basis of an integrative taxonomic approach, which involves the study of morphological, molecular, ecological, and chorological data. Four DNA regions are analysed: the ITS and LSU nrDNA, rpb1, and atp6. Phylogenetic reconstructions include 95 ingroup samples and show five main clades, which are considered as five subsections, one of them proposed as new (G. subsect. Hungarica), and a total of 27 lineages recognizable at species level. Discriminant function analyses, ANOVAs and Tukey’s HSD tests on more than 500 basidiomata reveal the utility of several quantitative morphological characters for species delimitation. As a result of the combination of the different sources of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Chorology; Ecology; Geastraceae; Morphology; Phylogenetics; Species delimitation. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/560059 |
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| Zaharias, Paul; Kantor, Yuri, I; Fedosov, Alexander E.; Criscione, Francesco; Hallan, Anders; Kano, Yasunori; Bardin, Jeremie; Puillandre, Nicolas. |
| The practice of species delimitation using molecular data commonly leads to the revealing of species complexes and an increase in the number of delimited species. In a few instances, however, DNA-based taxonomy has led to lumping together of previously described species. Here, we delimit species in the genus Cryptogemma (Gastropoda: Conoidea: Turridae), a group of deep-sea snails with a wide geographical distribution, primarily by using the mitochondrial COI gene. Three approaches of species delimitation (ABGD, mPTP and GMYC) were applied to define species partitions. All approaches resulted in eight species. According to previous taxonomic studies and shell morphology, 23 available names potentially apply to the eight Cryptogemma species that were... |
| Tipo: Text |
Palavras-chave: Species delimitation; Species description; ABGD; GMYC; PTP; Deep-sea species; Larval dispersal; Cosmopolitan species. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00688/79988/82966.pdf |
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| Veldman, S.. |
| Medicinal plants are an important source of primary healthcare for many people in Tanzania. These medicinal plants are harvested from the wild, and increasing commercial trade poses a serious threat to local plant populations. Currently it is unknown which species are traded and in what amounts. Across the southwestern border in Zambia, the traditional dish chikanda has transformed from a niche product to being a mainstream delicacy. One of the main ingredients are wild-harvested orchids, and these have become depleted throughout the country as an effect of the increased trade. It is unclear which orchid species are targeted and might be at risk of overharvesting. The aims of my doctorate are to map harvest and trade of Tanzanian medicinal plants and... |
| Tipo: Book (monograph) |
Palavras-chave: DNA barcoding; Africa; Species delimitation; Orchids; Medicinal plants. |
| Ano: 2018 |
URL: http://www.repository.naturalis.nl/record/668031 |
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| Wang, M.; Liu, F.; Crous, P.W.; Cai, L.. |
| Species of Nigrospora commonly occur as plant pathogens, endophytes or saprobes, and have been shown to be extremely interesting for the discovery of novel metabolites. The familial placement, as well as phylogenetic relationships among Nigrospora species remain ambiguous. In this study, Nigrospora (= Khusia) is confirmed as a monophyletic genus belonging to Apiosporaceae (Xylariales), based on a phylogeny inferred from LSU sequence data. A multi-locus phylogeny based on ITS, TEF1-α and TUB2, in conjunction with morphological characters, host associations, and ecological data was employed for species delimitation in Nigrospora, as well as identification of 165 recently collected isolates from China, and three from Europe. In total 13 novelties are proposed... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Apiosporaceae; Ascomycota; Phylogeny; Species delimitation; Systematics. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/635431 |
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| Mideros, M.F.; Turissini, D.A.; Guayazán, N.; Ibarra-Avila, H.; Danies, G.; Cárdenas, M.; Myers, K.; Tabima, J.; Goss, E.M.; Bernal,, A.; Lagos, L.E.; Grajales, A.; Gonzalez, L.N.; Cooke, D.E.L.; Fry, W.E.; Grünwald, N.; Matute, D.R.; Restrepo, S.. |
| Over the past few years, symptoms akin to late blight disease have been reported on a variety of crop plants in South America. Despite the economic importance of these crops, the causal agents of the diseases belonging to the genus Phytophthora have not been completely characterized. In this study, a new Phytophthora species was described in Colombia from tree tomato (Solanum betaceum), a semi-domesticated fruit grown in northern South America. Comprehensive phylogenetic, morphological, population genetic analyses, and infection assays to characterize this new species, were conducted. All data support the description of the new species, Phytophthora betacei sp. nov. Phylogenetic analyses suggest that this new species belongs to clade 1c of the genus... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Host specificity; Microsatellites; Oomycetes; Species delimitation; Tree tomato. |
| Ano: 2018 |
URL: http://www.repository.naturalis.nl/record/643330 |
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| Galindo, Lee Ann; Kool, Hugo H.; Dekker, Henk. |
| In this review (third part), several species within the Nassarius pauperus complex from the eastern Indian Ocean and western Pacific are treated, including a revised concept of Nassa paupera Gould, 1850, type species of the genus Reticunassa Iredale, 1936. In the most recent taxonomic revision, several species had been synonymized with Nassarius pauperus (Gould, 1850), despite distinctive differences among these species in shell morphology. We sequenced a fragment of the mitochondrial COI and the nuclear 28S genes of all available Nassarius pauperus complex species. Automatic barcode gap discovery and reciprocal monophyly were applied to propose species delimitation hypotheses and to support a new concept of the genus. Using morphological and molecular... |
| Tipo: Text |
Palavras-chave: Nassarius pauperus complex; Taxonomy; Species delimitation; Neotype; Barcoding. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00476/58803/61522.pdf |
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| Ranjbar, Mohammad Sharif; Zolgharnien, Hossein; Yavari, Vahid; Archangi, Bita; Salari, Mohammad Ali; Arnaud-haond, Sophie; Cunha, Regina L.. |
| Marine organisms with long pelagic larval stages are expected to exhibit low genetic differentiation due to their potential to disperse over large distances. Growing body of evidence, however, suggests that marine populations can differentiate over small spatial scales. Here we focused on black-lip pearl oysters from the Persian Gulf that are thought to belong to the Pinctada margaritifera complex given their morphological affinities. This species complex includes seven lineages that show a wide distribution ranging from the Persian Gulf (Pinctada margaritifera persica) and Indian Ocean (P. m. zanzibarensis) to the French Polynesia (P. m. cumingii) and Hawai'i (P. m. galtsoffi). Despite the long pelagic larval phase of P. m. persica, this lineage is absent... |
| Tipo: Text |
Palavras-chave: Black-lip pearl oysters; Pinctada persica; Species delimitation; Persian Gulf; Fragmented habitat. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00319/43040/42631.pdf |
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| Pino-Bodas, R.; Pérez-Vargas, I.; Stenroos, S.; Ahti, T.; Burgaz, A.R.. |
| The complex Cladonia mediterranea belongs to the section Impexae and is formed by C. azorica, C. macaronesica and C. mediterranea. These species are basically distributed in the Mediterranean and Macaronesian Regions. In the present work the limits between the species of this complex are re-examined. To this end, the morphological characters were studied along with the secondary metabolites and the DNA sequences from three loci (ITS rDNA, IGS rDNA and rpb2). The morphological data were studied by principal component analysis (PCA), while the DNA sequences were analyzed using several approaches available to delimit species: genealogical concordance phylogenetic species recognition, species tree (BEAST* and spedeSTEM) and cohesion species recognition. In... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coalescence; Iberian Peninsula; Integrative taxonomy; Lichen forming fungi; Macaronesia; Molecular systematic; Species delimitation; Taxonomy. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/611813 |
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| Mutanen, M.; Kivelä, S.M.; Vos, R.A.; Doorenweerd, C.; Ratnasingham, S.; Hausmann, A.; Huemer, P.; Dinca, V.; Nieukerken, E.J. van; Lopez-Vaamonde, C.; Vila, R.; Aarvik, L.; Decaëns, T.; Efetov, K.A.; Hebert, P.D.N.; Johnsen, A.; Karsholt, O.; Pentinsaari, M.; Rougerie, R.; Segerer, A.; Tarmann, G.; Zahiri, R.; Godfray, H.C.J.. |
| The proliferation of DNA data is revolutionizing all fields of systematic research. DNA barcode sequences, now available for millions of specimens and several hundred thousand species, are increasingly used in algorithmic species delimitations. This is complicated by occasional incongruences between species and gene genealogies, as indicated by situations where conspecific individuals do not form a monophyletic cluster in a gene tree. In two previous reviews, non-monophyly has been reported as being common in mitochondrial DNA gene trees. We developed a novel web service “Monophylizer” to detect non-monophyly in phylogenetic trees and used it to ascertain the incidence of species non-monophyly in COI (a.k.a. cox1) barcode sequence data from 4977 species... |
| Tipo: Article / Letter to the editor |
Palavras-chave: DNA barcoding; Gene tree; Lepidoptera; Mitochondrial COI; Mitochondrial cox1; Paraphyly; Polyphyly; Species delimitation; Species monophyly. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/648758 |
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| Registros recuperados: 15 | |
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