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Registros recuperados: 17
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A cladistic re-assessment of the <i>Polycystis</i> species complex (Polycystididae, Eukalyptorhynchia) OMA
Artois, T.J.; Schockaert, E.R..
The taxonomy of the genus <i>Polycystis</i> Koelliker, 1845 <i>sensu</i> Schockaert & Karling, 1975 is discussed. Character analysis reveals the monophyletic state of the three species groups these authors defined within it. As no synapomorphies for the three groups can be found, the genus is split in three genera: <i>Polycystis</i> Koelliker, 1845, <i>Macrorhynchus</i> Graff, 1882 and <i>Paulodora Marcus</i>, 1948. The systematic position of <i>Macrorhynchus yaganus</i> (Marcus, 1954) Evdonin, 1977 is also discussed, resulting in the erection of the new genus <i>Marcusia</i> gen. n.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phylogenetics; Taxonomy; Eukalyptorhynchia; Plathelminthes; Polycystididae; Polycystis.
Ano: 1998 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6815
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A distinctive new cloud-forest rodent (Hystricognathi: Echimyidae) from the Manu Biosphere Reserve, Peru Mastozool. neotrop.
Patterson,Bruce D.; Velazco,Paul M..
Recent surveys in Peru 's Manu National Park and Biosphere Reserve uncovered a new species of hystricognath rodent, a spiny rat (Echimyidae) with dense, soft fur. Inhabiting Andean cloud-forests at 1900 m, the new rodent belongs to a radiation of "brush-tailed tree rats" previously known only from the Amazon, Orinoco, and other lowland river drainages. Phylogenetic analysis of morphology (cranial and dental characters) unambiguously allies the new species with species of Isothrix. While the inclusion of the new taxon does not resolve the "star phylogeny" which underlies the echimyid radiation, it identifies the Andes as a possible theatre for the evolution of some soft-haired members of the group. The new species is described and a revised diagnosis of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Andes; Morphology; Phylogenetics; Species description; Systematics.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000200002
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A large phylogeny of turtles (Testudines) using molecular data Naturalis
Guillon, J.-M.; Guéry, L.; Hulin, V.; Girondot, M..
Turtles (Testudines) form a monophyletic group with a highly distinctive body plan. The taxonomy and phylogeny of turtles are still under discussion, at least for some clades. Whereas in most previous studies, only a few species or genera were considered, we here use an extensive compilation of DNA sequences from nuclear and mitochondrial genes for more than two thirds of the total number of turtle species to infer a large phylogeny for this taxon. Our results enable us to discuss previous hypotheses on species phylogeny or taxonomy. We are thus able to discriminate between competing hypotheses and to suggest taxonomical modifications. Finally, we pinpoint the remaining ambiguities for this phylogeny and the species for which new sequences should be...
Tipo: Article / Letter to the editor Palavras-chave: MtDNA sequence; NuDNA sequence; Phylogenetics; Reptilia; Taxonomy; 42.82.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/421559
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A Molecular Perspective On The Diversification Of Short-Tailed Opossums (Monodelphis: Didelphidae) Mastozool. neotrop.
Solari,Sergio.
As currently understood Monodelphis includes more than 22 species and is the most diverse genus of opossums (Didelphimorphia). No complete evaluation of the systematic relationships of its species has been attempted, despite the fact that several species groups and even genus-level groups have been proposed based on morphology, and that some of them are limited to recognized biogeographic regions. Here, genealogic relationships among 17 species were assessed based on phylogenetic analyses of 60 individual sequences (801 base pairs of the mitochondrial cytochrome b gene). The analyses cast doubts on the monophyly of Monodelphis, but species were consistently discriminated into eight species groups: (a) brevicaudata group, with five species, (b) adusta...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Didelphimorphia; Phylogenetics; Species limits; Taxonomy.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000200007
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A taxonomic, phylogenetic and biogeographic study of the genus Acanthophora (Rhodomelaceae, Rhodophyta) Naturalis
Jong, Yde S.D.M. de; Hitipeuw, Creusa; Prud’homme van Reine, Willem F..
A cladistic analysis, based on a taxonomic revision is carried out for 7 Acanthophora species using 19 characters. Hypotheses on species affinities are based primarily on morphological characters. Because most species show only few distinctive characters, emphasis was placed on features of spine development, either in relation to vegetative or to reproductive structures. Global distribution of 7 Acanthophora species: viz. A. aokii, A. dendroides, A. muscoides, A. nayadiformis, A. pacifica, A. ramulosa, and A. spicifera, shows a discontinuous pattern. Although widely distributed species are present (A. muscoides and A. spicifera), a disjunct distribution of other species occurs in the Pacific (A. aokii), Indian Ocean (A. dendroides), East-Atlantic region...
Tipo: Article / Letter to the editor Palavras-chave: Rhodomelaceae; Rhodophyta; Biogeography; Phylogenetics; Seaweeds; Taxonomy.
Ano: 1999 URL: http://www.repository.naturalis.nl/record/525490
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Biodiversity and sustainable management of a tropical wetland lake ecosystem: A case study of Lake Kanyaboli, Kenya OceanDocs
Rasowo, J.O.; Abila, R.; Manyala, J..
Lake Kanyaboli and the surrounding Yala swamp wetland has been recognized as an important biodiversity hotspot. Recent population genetic and phylogenetic studies confirm the evolutionary importance of Lake Kanyaboli (Kenya) in preserving the cichlid fish fauna of Lake Victoria. The adjoining Yala swamp harbours the endangered swamp antelope Sitatunga (Tragecephalus spekii) and several papyrus endemic birds. The lake and adjoining swamp play a critical role in the livelihood of the local communities who heavily depend on the wetland resources. Current ongoing large scale land use changes within the swamp threaten the ecological integrity and functioning of this highly dynamic wetland ecosystem. It is therefore imperative that proper management and...
Tipo: Proceedings Paper Palavras-chave: Wetlands; Biodiversity; Resource conservation; Inland waters; Ecosystem management; Ecological crisis; Tropical environment; Population genetics; Phylogenetics; Lake fisheries; Freshwater fish; Aquatic birds; Land use.
Ano: 2006 URL: http://hdl.handle.net/1834/2126
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Bonamia parasites: a rapidly changing perspective on a genus of important mollusc pathogens ArchiMer
Engelsma, Marc; Culloty, Sarah C.; Lynch, Sharon A.; Arzul, Isabelle; Carnegie, Ryan B..
Organisms of the genus Bonamia are intracellular protistan parasites of oysters. To date, 4 species have been described (B. ostreae, B. exitiosa, B. perspora and B. roughleyi), al though the status of B. roughleyi is controversial. Introduction especially of B. ostreae and B. exitiosa to naïve host populations has been shown to cause mass mortalities in the past and has had a dramatic impact on oyster production. Both B. ostreae and B. exitiosa are pathogens notifiable to the World Organisation for Animal Health (OIE) and the European Union. Effective management of the disease caused by these pathogens is complicated by the extensive nature of the oyster production process and limited options for disease control of the cultured stocks in open water. This...
Tipo: Text Palavras-chave: Bonamia ostreae; Bonamia exitiosa; Oyster disease; Phylogenetics; Geographical spread; Diagnostics; Epizootiology; Host-parasite interaction; Bonamiosis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00200/31169/29568.pdf
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Generic circumscriptions in Geoglossomycetes Naturalis
Hustad, V.P.; Miller, A.N.; Dentinger, B.T.M.; Cannon, P.F..
The class Geoglossomycetes is a recently created class of Ascomycota, currently comprised of one family (Geoglossaceae) and five genera (Geoglossum, Nothomitra, Sarcoleotia, Thuemenidium and Trichoglossum). These fungi, commonly known as earth tongues, have long been a subject of mycological research. However, the taxonomy within the group has historically been hindered by the lack of reliable morphological characters, uncertain ecological associations, and the inability to grow these fungi in culture. The phylogenetic relationships of Geoglossomycetes were investigated by conducting maximum likelihood and Bayesian analyses using a 4-gene dataset (ITS, LSU, MCM7, RPB1). Five well-supported monophyletic clades were found that did not correspond exactly with...
Tipo: Article / Letter to the editor Palavras-chave: Ascomycota; Earth tongues; Geoglossum; Microglossum; Phylogenetics; Systematics.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/532273
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Generic revision of the superfamily Pterophoroidea (Lepidoptera) Naturalis
Gielis, C..
The genera of the superfamily Pterophoroidea are redescribed. Three new genera are described: Dejongia, Stockophorus and Shafferia. The characters of the genera and their states are translated into a data matrix. A majority rule consensus tree composed with PAUP serves as a basis for a phylogenetic analysis. A cladogram, representing the views of the author, based on the data acquired, is presented with argumentation. The evaluation of the characters is discussed. A new subfamily is erected, the Deuterocopinae. The Pterophorinae are redefined. The Platyptiliinae are synonymized with the Pterophorinae. The Macropiratidae, considered by Minet (1991) a subfamily or a genus of the Pterophoridae, has been raised to family rank, and is placed as the sister group...
Tipo: Article / Letter to the editor Palavras-chave: Pterophoroidea; Pterophoridae; Macropiratidae; Revision; Phylogenetics; Biogeography; Checklist.; 42.75.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/317793
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Genetic and morphological variation in corallivorous snails (Coralliophila spp.) living on different host corals at Curaçao, southern Caribbean Naturalis
Potkamp, G.; Vermeij, M.J.A.; Hoeksema, B.W..
Snails of the genus Coralliophila (Muricidae: Coralliophilinae) are common corallivores in the Caribbean, feeding on a wide range of host species. In the present study, the morphological and genetic variation in C. galea and C. caribaea were studied in relation to their association with host coral species at Curaçao. Differences in shell shape among snails living on different hosts were quantified using geometric morphometric and phylogenetic relationships were studied using two mitochondrial markers (12S and COI). Based on these analyses, a new species, C. curacaoensis sp. nov., was found in association with the scleractinian coral Madracis auretenra. Both C. galea and C. caribaea showed host-specific differences in shell shape, size, and shell allometry...
Tipo: Article / Letter to the editor Palavras-chave: Genetic differentiation; Phylogenetics; 12S; COI; Corallivory; Morphology; Geometric morphometrics; Host race.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/630190
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Genética poblacional y filogeografía de Caretta caretta (Linnaeus, 1758) y Cheloniamydas (Linnaeus, 1758): Una perspectiva regional con énfasis en el suroeste de Cuba OceanDocs
Ruiz Urquiola, A..
El manejo efectivo para la conservación de las tortugas marinas depende del entendimiento de las interconexiones demográficas entre las poblaciones. En este trabajo se determinaron la estructura poblacional, la diversidad genética y las relaciones filogenéticas y filogeográficas entre las principales colonias de anidación cubanas de Chelonia mydas y Caretta caretta, y se compararon en un contexto regional, a partir de la secuenciación de la primera mitad de la región no codificadora del DNA mitocóndrico, con vistas a un manejo sostenible. En las colonias de anidación cubanas de ambas especies estuvieron presentes los haplotipos más distribuidos y representados de los linajes de cada especie informados para la región. No obstante, las colonias de...
Tipo: Theses and Dissertations Palavras-chave: Population genetics; Phylogenetics; Marine turtles.
Ano: 2008 URL: http://hdl.handle.net/1834/5388
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Integrative taxonomy reveals an unexpected diversity in Geastrum section Geastrum (Geastrales, Basidiomycota) Naturalis
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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Molecular systematics of Barbatosphaeria (Sordariomycetes): multigene phylogeny and secondary ITS structure Naturalis
Réblová, M.; Réblová, K.; Štěpánek, V..
Thirteen morphologically similar strains of barbatosphaeria- and tectonidula-like fungi were studied based on the comparison of cultural and morphological features of sexual and asexual morphs and phylogenetic analyses of five nuclear loci, i.e. internal transcribed spacer rDNA operon (ITS), large and small subunit nuclear ribosomal DNA, β-tubulin, and second largest subunit of RNA polymerase II. Phylogenetic results were supported by in-depth comparative analyses of common core secondary structure of ITS1 and ITS2 in all strains and the identification of non-conserved, co-evolving nucleotides that maintain base pairing in the RNA transcript. Barbatosphaeria is defined as a well-supported monophyletic clade comprising several lineages and is placed in the...
Tipo: Article / Letter to the editor Palavras-chave: Phylogenetics; Ramichloridium; Sequence analysis; Spacer regions; Sporothrix; Tectonidula.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/588698
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Phylogeny and biogeography of midwife toads (Alytes, Discoglossidae): a rebuttal Naturalis
Arntzen, J.W.; García-París, M..
Three competing phylogenetic hypotheses for the genus Alytes (midwife toads) are evaluated. Based on quantitative coding of protein characters the most parsimonious solution shows a sister taxon relationship for Alytes dickhilleni and A. muletensis. The alternatives in which A. obstetricans has its sister group in either A. dickhilleni or A. muletensis lack support. Using calibrations derived from protein evolutionary rates, the vicariant events giving rise to A. obstetricans and the lineage leading to the A. muletensis and A. dickhilleni clade and the subsequent splitting between A. muletensis and A. dickhilleni cannot be placed much earlier than the Miocene-Pliocene boundary. Biogeographical scenarios invoking an earlier time of divergence should be...
Tipo: Article / Letter to the editor Palavras-chave: Allozymes; Alytes; Biogeography; Midwife toads; Phylogenetics; Spain; Taxonomy; Vicariance.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/504096
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Phylogeography of the reef-building polychaetes of the genus Phragmatopoma in the western Atlantic Region ArchiMer
Nunes, Flavia; Van Wormhoudt, Alain; Faroni-perez, Larisse; Fournier, Jerome.
Aim To verify the synonymy of the reef-building polychaete Phragmatopoma caudata (described for the Caribbean) and Phragmatopoma lapidosa (described for Brazil) using molecular data. To evaluate the patterns of genetic diversity and connectivity among populations from Florida to South Brazil. Location Intertidal zone in the western Atlantic biogeographical Region: Brazil, eastern Caribbean and Florida (USA). Methods DNA sequence data from one mitochondrial (cox-1) and one nuclear ribosomal (ITS-1) loci were obtained from 11 populations of P. caudata spanning the coasts of Brazil, eastern Caribbean and Florida. Phylogenetic relationships among populations of P. caudata and other members of the genus were inferred by Bayesian methods. Population...
Tipo: Text Palavras-chave: Biogeographical barrier; Brazilian Province; Caribbean Province; Connectivity; Larval dispersal; Phragmatopoma caudata; Phylogenetics; Phylogeography; Polychaete reef; Western Atlantic Region.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00363/47376/47710.pdf
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The marine brooder Excirolana braziliensis (Crustacea: Isopoda) is also a complex of cryptic species on the coast of Chile RChHN
VARELA,ANDREA I; HAYE,PILAR A.
Speciation is a direct consequence of isolated populations in taxa with low dispersal potential. The brooding crustacean Excirolana braziliensis, with a presumably wide geographic range of distribution (~16° N-41° S in the Pacific and ~19° N-35° S in the Atlantic), has been detected to correspond to cryptic species on the coast of Panama. Latitudinal variations in reproductive features in E. braziliensis have been attributed to phenotypic plasticity, however, the differences may be the result of divergent populations. Considering that the taxon has been reported to be a complex of cryptic species in other geographic areas and given the phenotypic differences detected along its distribution range, we hypothesized that E. braziliensis is a complex of species...
Tipo: Journal article Palavras-chave: Cryptic species; Genetic differentiation; Genetic distance; Marine peracarids; Phylogenetics.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000400011
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Wavelet analysis and hierarchical clustering of ofm phenotypic population's variations originated from southern america and europe and attempts of a first relation to molecular divergence. Repositório Alice
DAMOS, P.; BONSIGNORE, C. P.; NAVA, D. E.; BERNARDI, D.; BOTTON, M.; BARROS-PARADA, W.; FUENTES-CONTRERAS, E.; ESCUDERO-COLOMAR, L. A.; BOSCH, D.; AVTZIS, D. N..
In this work we compare Grapholita molesta Busck (Lepidoptera: Tortricidae) populations originated from Brazil, Chile, Spain, Italy and Greece using power spectral density and phylogenetic analysis to detect any similarities between the population macro- and the molecular micro-level. Log-transformed population data were normalized and AR(p) models were developed to generate for each case population time series of equal lengths. The time-frequency/scale properties of the population data were further analyzed using wavelet analysis to detect any population dynamics frequency changes and cluster the populations. Based on the power spectral of each population time series and the hierarchical clustering schemes, populations originated from Southern America...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Filogenia; Praga de planta; Grapholita molesta; Mariposa oriental; Inseto; Lepidoptero; Grapholita molesta; Population dynamics; Insect seasonality; Phylogenetics.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054903
Registros recuperados: 17
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