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Registros recuperados: 5
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A test of the utility of DNA barcoding in the radiation of the freshwater stingray genus Potamotrygon (Potamotrygonidae, Myliobatiformes) Genet. Mol. Biol.
Toffoli,Daniel; Hrbek,Tomas; Araújo,Maria Lúcia Góes de; Almeida,Maurício Pinto de; Charvet-Almeida,Patricia; Farias,Izeni Pires.
DNA barcoding is a recently proposed global standard in taxonomy based on DNA sequences. The two main goals of DNA barcoding methodology are assignment of specimens to a species and discovery of new species. There are two main underlying assumptions: i) reciprocal monophyly of species, and ii) intraspecific divergence is always less than interspecific divergence. Here we present a phylogenetic analysis of the family Potamotrygonidae based on mitochondrial cytochrome c oxidase I gene, sampling 10 out of the 18 to 20 valid species including two non-described species. Potamotrygonidae systematics is still not fully resolved with several still-to-be-described species while some other species are difficult to delimit due to overlap in morphological characters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Potamotrygon; Barcoding; Radiation; Phylogenetics; COI; MtDNA.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200028
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Experimental taxonomy exposes ontogenetic variability and elucidates the taxonomic value of claw configuration in Milnesium Doyère, 1840 (Tardigrada: Eutardigrada: Apochela) Naturalis
Witold Morek, W.; Gąsiorek, P.; Stec, D.; Blagden, B.; Michalczyk, Ł.
In this paper we describe a new apochelan species, Milnesium variefidum sp. nov. from Scotland and provide novel morphological and molecular data for Milnesium berladnicorum Ciobanu et al., 2014. The new species differs from the most similar M. berladnicorum by the presence of developmental dimorphism in claw configuration, absent or weakly developed cuticular bars under claws I-III, a different arrangement of cuticular pseudoplates, and by differences in the sequences of three nuclear DNA fragments: 18S rRNA (p-distance: 0.6%), 28S rRNA (2.0%), ITS-2 (9.3%), and on mitochondrial gene COI (12.4%). Although ontogenetic claw configuration change was suspected to occur in some Milnesium species, we are the first to document it through the combined use of...
Tipo: Article / Letter to the editor Palavras-chave: Barcoding; Diagnostic key; Development tracking; In vitro culture; M. berladnicorum; M. variefidum sp. nov..
Ano: 2016 URL: http://www.repository.naturalis.nl/record/607686
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Identification of fungi isolated from the olive moth (Prays oleae Bern.) based on ITS region IPB - Escola Superior Agrária
Oliveira, Ivo; Pereira, J.A.; Bento, Albino; Lino-Neto, Teresa; Baptista, Paula.
Tipo: ConferenceObject Palavras-chave: Internal transcribed spacer; Barcoding; Fungal species; Prays oleae.
Ano: 2010 URL: http://hdl.handle.net/10198/4491
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New species of Hohenbuehelia, with comments on the Hohenbuehelia atrocoerulea – Nematoctonus robustus species complex Naturalis
Consiglio, G.; Setti, L.; Thorn, R.G..
Four new species of Hohenbuehelia (Fungi: Pleurotaceae) are described in the group of Hohenbuehelia atrocoerulea and Hohenbuehelia grisea. Hohenbuehelia algonquinensis, found on Pinus in Ontario, Canada, may be distinguished macroscopically from bluish collections of H. atrocoerulea and watery grey-brown collections of H. grisea by its coal-black pileus. Hohenbuehelia canadensis, on or associated with Pinus in both Ontario and Alberta, Canada, and Hohenbuehelia nimueae, on Salix in Ontario and Abies in Wyoming, USA, have similarly dark fruiting bodies and were previously misidentified as H. approximans (which we treat as a synonym of H. grisea), H. atrocoerulea, H. mustialensis or H. nigra. The latter species is shown to be a member of Resupinatus, despite...
Tipo: Article / Letter to the editor Palavras-chave: 28S; 5 new taxa; Barcoding; Mushrooms; Molecular phylogeny; Nematophagous; Resupinatus niger.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/659253
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Population genetic structure of Schistosoma bovis in Cameroon ArchiMer
Djuikwo-teukeng, Felicite Flore; Simo, Alain Kouam; Allienne, Jean-francois; Rey, Olivier; Ngapagna, Arouna Njayou; Tchuem-tchuente, Louis Albert; Boissier, Jerome.
BackgroundSchistosomiasis is neglected tropical parasitic disease affecting both humans and animals. Due to the human health impact, population genetic studies have focused on the three main human-infecting schistosome species: Schistosoma mansoni, S. haematobium and S. japonicum. Here we present novel data on the population genetic structure of Schistosoma bovis, a highly widespread and prevalent schistosome infecting ruminants, and therefore of veterinary importance.MethodsAdult S. bovis were sampled in the two main abattoirs of Cameroon (Yaounde and Douala). Twenty-two cows originating from four distinct localities were sampled and a total of 218 parasites were recovered. All parasites were genotyped using a panel of 14 microsatellite markers and a...
Tipo: Text Palavras-chave: Schistosoma bovis; Barcoding; Population genetic structure.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00481/59267/62448.pdf
Registros recuperados: 5
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