Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"28S rDNA"”.
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Interrelationships Among Monorchiid Trematodes with Special Emphasis on Some Northwestern Atlantic Genera
… and illustrated. Phylogenetic analysis of the 28S rDNA fragment revealed <em>Genolopa </em>Linton, 1910 represents a natural lineage, supporting that presence of spines in the genital atrium and a bipartite, anteriorly spined terminal organ are key diagnostic features for the genus, and …
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Phylogeny of parasitic wasps of Torymidae (Hymenoptera: Chalcidoidea) and evolution of their life-strategies
… of sequencies of two ribosomal genes (18S rDNA and 28S rDNA) were developed for 649 species of chalcidoid taxa. However, family Torymidae was considered as polyphyletic group with the subfamily Megastigminae unrelated to the subfamily Toryminae (paper I). Monophyly of Torymidae was …
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Crustacean phylogenetic systematics and opsin evolution
… of Mysidae utilized 16S mtDNA, and 18S and 28S rDNA to reconstruct phylogenetic relationships and assess newly developed Bayesian methods of assessing pattern heterogeneity. Using this suite of genetic markers, there are incongruencies between current taxonomy and inferred phylogenetic …
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Chromosomal localization of a proinsulin transgene inserted with a transposon-based vector into Japanese quail, Coturnix coturnix
… nucleotide sequence from G2 Japanese quail. The 28S rDNA was found on a macrochromosome and a microchromosome pair by primed in situ hybridization, fluorescent in situ hybridization, and silver staining. Teflon-coated coverslip slides were created to facilitate laser microdissection of avian …
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New taxa and phylogenetic placement of Asterinales from Brazil
… analysis of the ribosomal sequences (18S and 28S rDNA) and protein-coding (TEF and RPB2) confirmed that Asterinales form a monophyletic clade well supported within the Dothideomycetes. The sister relationship of Schizothyriaceae and Mycosphaerellaceae within the Capnodiales and the …
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Molecular and Field Analyses of Bathyplectes spp. (Hymenoptera: Ichneumonidae) in Alfalfa Systems in Virginia
… were obtained for the D2–D3 region of the 28S ribosomal DNA (28S rDNA) gene; sequence identity between B. anurus and B. curculionis was 96.6%. The 28S rDNA sequences were also obtained for another Bathyplectes species, possibly B. stenostigma, and for four taxa of Hymenoptera that …
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A Phylogenetic Assessment of Thereva Latreille (Insecta: Diptera: Therevidae)
… Using a molecular dataset of two nuclear genes (28S rDNA and elongation factor 1-alpha) and one mitochondrial gene (16S rDNA), a monophyletic circumscription of Thereva was identified that includes Afrotropical, Nearctic, and Palaearctic species and excludes Afrotropical and Neotropical species …
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Systematics of the Leafhopper Subfamily Deltocephalinae (Hemiptera: Cicadellidae) and the Tribe Chiasmini: Phylogeny, Classification, and Biogeography
… data set included 2814 aligned positions of the 28S rDNA gene region, 353 bp of the Histone H3 nuclear protein coding gene, and 119 morphological characters for 114 included exemplar species representing nearly all tribes of Deltocephalinae and related subfamilies and five outgroup taxa. The …
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Die B-Chromosomen der Ukelei (Alburnus alburnus)
… Hybridisierungen mit den ribosomalen 5S, 18S/28S rDNA-Proben und der Telomerprobe (TTAGGG)n, zeigte, dass die außergewöhnlich großen B Chromosomen von A. alburnus heterochromatisch, GC-reich und spät replizierend sind. Es wurden bei Alburnus alburnus keinerlei Hinweise auf heteromorphe …
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Diversity, Distribution and Evolution of the Planktonic Diatom Family Chaetocerotaceae
… from these sites, and their 18S- and partial 28S rDNA sequences and morphological information gathered. The strains grouped into 60 genetically distinct species, thus providing a dataset of validated Chaetocerotacean 18S reference barcodes. Inferred molecular phylogenies showed monophyletic …
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Phylogeny of the Polyneopterous Insects With Emphasis on Plecoptera: Molecular and Morpological Evidence
… of the polyneopteran orders based on 18S rDNA, 28S rDNA, Histone 3, and a coded morphology matrix for an extensive sampling of taxa. We investigate the use of congruence between separate datasets as an a priori measure of alignment quality. Our results support the paraphyly of …
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Revision of Xanthomicrogaster Cameron, 1911 (Hymenoptera: Braconidae: Microgastrinae)
… morphology, DNA sequences (COI, wingless, and 28S rDNA), and host caterpillar with host plant records. The morphological boundaries of the genus are proposed, and a dichotomous key to world species is presented to facilitate identification and future description of species. Two molecular …
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Generic concepts in the Crepidotaceae as inferred from nuclear large subunit ribosomal DNA sequences, morphology, and basidiospore dormancy patterns
… using nuclear large subunit ribosomal DNA (LSU rDNA) sequences. Parsimony analysis of the molecular data supports the Singer classification of Crepidotus, Melanomphalia, and Simocybe as a single monophyletic unit within the Agaricales. The affinities of the genus Tubaria remain uncertain. …
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Assessment of the population structure of the South African sardine Sardinops sagax using a multi-method approach and the morphological and molecular characterization of a stock-discriminating digenean parasite biotag of the genus Cardiocephaloides
… of this digenean biotag. Analysis of partial 28S rDNA region sequence data showed that the metacercariae and the adult Cardiocephaloides found in the African penguin Spheniscus demersus are of the same species, likely C. physalis. This study is the first documentation of the morphological and …
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Biodiversity of phytoparasitic nematodes associated with Musaceae and fruit crops in Colombia
… populations from GenBank at different rDNA regions (D2D3, 18S and ITS1-5.8-ITS2) yielded phylogenetic trees with similar topologies. All of the generated trees contained three identical clades, strongly supported by high PP values. Meloidogyne populations containing mainly temperate …