|
|
|
Registros recuperados: 176 | |
|
|
Ćurčić, Božidar P.M.; Poinar, George O.; Sarbu, Serban M.. |
Two species of Roncus L. Koch, 1873 (Neobisiidae), new to science (R. ciobanmos n. sp. and R. dragobete n. sp.), and one species of Neobisium Chamberlin, 1930 [N. (N). biharicum Beier, 1939], collected in the Movile Cave, southern Dobrogea, Romania, have been described, diagnostic characters illustrated, and their geographic distribution analyzed. In addition, the description of Chthonius (Chthonius) monicae Boghean, 1989 (Chthoniidae), otherwise known only from two females, has been amended. The possible relationships of these species are discussed in view of the importance of some diagnostic characters and of the evolution of their cave habitat. |
Tipo: Article / Letter to the editor |
Palavras-chave: Cave fauna; Taxonomy; Biogeography; Evolution; Pseudoscorpions; Chthoniidae; Neobisiidae; Chthonius; Roncus; Neobisium; New species. |
Ano: 1994 |
URL: http://www.repository.naturalis.nl/record/504604 |
| |
|
|
Fiers, Frank; Reid, Janet W.; Iliffe, Thomas M.; Suárez-Morales, Eduardo. |
Four previously unknown hypogean species of cyclopoid copepods were collected in cenotes and wells of the Yucatán Peninsula, Mexico. Diacyclops chakan sp. n. and D. puuc sp. n. differ from their congeners in combining 3-segmented swimming legs, 11-segmented antennules, and legs 1-4 endopodite segment 2 all with 2 setae. Species of Diacyclops rarely occur in tropical regions, and the Diacyclops described here are only the second and third species recorded from Mexico. The benthic D. puuc was found in the large underground reservoir of a cenote. Diacyclops chakan was encountered in such large open subterranean water basins, but more frequently and abundantly in wells. The two Mesocyclops species, M. chaci sp. n. and M. yutsil sp. n., most closely resemble... |
Tipo: Article / Letter to the editor |
Palavras-chave: Diacyclops; Mesocyclops; Copepoda; Cyclopoida; Biogeography; Evolution; Hypogean; Karst; Species-flock; Taxonomy; Mexico. |
Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/504240 |
| |
|
|
Sanz, Sebastián; Platvoet, Dirk. |
On several occasions, shrimps belonging to a new species of the genus Typhlatya were collected in a cave in the province of Castellón, Spain. This is the first record of the genus in the Iberian Peninsula. The species is described and the validity, distribution, and zoogeography of the genus, as well as the status of the genus Spelaeocaris, are discussed. Former models for the evolution of the genus Typhlatya and its genus group are reviewed, as well as the system of inner classification of the Atyidae and its biogeographical meaning. For the age and evolution of the genus we developed a new model based on vicariance principles that involves further evolution of each species after the disruption of the ancestral range. This allows new estimations for the... |
Tipo: Article / Letter to the editor |
Palavras-chave: Typhlatya; Decapoda; Spain; Subterranean waters; Systematics; Zoogeography; Vicariance; Evolution; Key to genus. |
Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/503881 |
| |
|
|
Schmitt, I.; Crespo, A.; Divakar, P.K.; Fankhauser, J.D.; Herman-Sackett, E.; Kalb, K.; Nelsen, M.P.; Nelson, N.A.; Rivas-Plata, E.; Shimp, A.D.; Widhelm, T.; Lumbsch, H.T.. |
Developing powerful phylogenetic markers is a key concern in fungal phylogenetics. Here we report degenerate primers that amplify the single-copy genes Mcm7 (MS456) and Tsr1 (MS277) across a wide range of Pezizomycotina (Ascomycota). Phylogenetic analyses of 59 taxa belonging to the Eurotiomycetes, Lecanoromycetes, Leotiomycetes, Lichinomycetes and Sordariomycetes, indicate the utility of these loci for fungal phylogenetics at taxonomic levels ranging from genus to class. We also tested the new primers in silico using sequences of Saccharomycotina, Taphrinomycotina and Basidiomycota to predict their potential of amplifying widely across the Fungi. The analyses suggest that the new primers will need no, or only minor sequence modifications to amplify... |
Tipo: Article / Letter to the editor |
Palavras-chave: Ascomycota; DNA replication licensing factor; Evolution; Lichenised fungi; Mcm7; MS277; MS456; Phylogeny; Pre-rRNA processing protein; Protein-coding; Tsr1. |
Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/531799 |
| |
|
|
Jung, T.; Scanu, B.; Bakonyi, J.; Seress, D.; Kovács, G.M.; Durán, A.; Sanfuentes von Stowasser, E.; Schena, L.; Mosca, S.; Thu, P.Q.; Nguyen, C.M.; Fajardo, , S.; González, M.; Pérez-Sierra, A.; Rees, H.; Cravador, A.; Maia, C.; Horta Jung, M.. |
During various surveys of Phytophthora diversity in Europe, Chile and Vietnam slow growing oomycete isolates were obtained from rhizosphere soil samples and small streams in natural and planted forest stands. Phylogenetic analyses of sequences from the nuclear ITS, LSU, β-tubulin and HSP90 loci and the mitochondrial cox1 and NADH1 genes revealed they belong to six new species of a new genus, officially described here as Nothophytophthora gen. nov., which clustered as sister group to Phytophthora. Nothophytophthora species share numerous morphological characters with Phytophthora: persistent (all Nothophytophthora spp.) and caducous (N. caduca, N. chlamydospora, N. valdiviana, N. vietnamensis) sporangia with variable shapes, internal differentiation of... |
Tipo: Article / Letter to the editor |
Palavras-chave: Breeding system; Caducity; Evolution; Oomycetes; Peronosporaceae; Phylogeny. |
Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/635416 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
Diogo,Rui. |
The Weberian apparatus is essentially a mechanical device improving audition, consisting of a double chain of ossicles joining the air bladder to the inner ear. Despite being one of the most notable complex systems of teleost fishes and the subject of several comparative, developmental and functional studies, there is still much controversy concerning the origin, evolution and homologies of the structures forming this apparatus. In this paper I provide a new insight on these topics, which takes into account the results of recent works on comparative anatomy, paleontology, and ontogeny as well as of a recent extensive phylogenetic analysis including not only numerous otophysan and non-otophysan extant otocephalans but also ostariophysan fossils such as... |
Tipo: Journal article |
Palavras-chave: Evolution; Functional anatomy; Ostariophysi; Otocephala; Otophysi; Phylogeny; Teleostei; Weberian apparatus. |
Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000200008 |
| |
|
| |
|
|
Ruiz,Eduardo; Toro,Oscar; Crawford,Daniel J; Stuessy,Tod F; Negritto,María A; Baeza,Carlos; Becerra,José. |
Phylogenetic relationships among Chilean species of Drimys as well asD. granadensis from Central America andD. angustifolia from Brazil were reconstructed using internal transcribed spacers (ITS) of nuclear ribosomal DNA and a parsimony analysis. Our results at the family level were congruent with previous phylogenetic hypotheses. Molecular data indicate that the Juan Fernandez Island endemic D. confertifolia diverged early in the evolution of the genus, and it is not closely related to the continental species D. winteri, as might be expected on the basis of morphology and biogeography. The ITS phytogeny also provides general support for a recent distribution of species on the western side of the Andes Mountains; the only exception is D. andina, which may... |
Tipo: Journal article |
Palavras-chave: Drimys; Evolution; ITS; Indels; Winteraceae. |
Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000200008 |
| |
|
| |
|
|
Nobre,Lydayanne Lilás de Melo; Santos,José Daniel Oliveira dos; Leite,Rychard; Almeida,Cícero. |
Abstract The genus Spondias (family Anacardiaceae) comprises 19 taxa, ten of which occur in Neotropical regions. Spondias bahiensis has been suggested to be a hybrid, although initial evidence does not support this hypothesis. The aim of this study was to test the hypothesis of the hybrid origin of S. bahiensis using high-throughput sequencing with single nucleotide polymorphism (SNP) analysis, characterization of intragenomic nuclear ribosomal DNA (nrDNA), and nuclear and chloroplast phylogenomic analyses. The SNP analysis revealed a high number of SNPs in the S. bahiensis genome, and with respect to nrDNA, S. bahiensis shared approximately half of the SNP alleles with S. tuberosa, but not with S. mombin. Combining the SNP analysis with nrDNA phylogeny... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RDNA; Phylogenetics; Evolution; Hybrid offspring. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500878 |
| |
|
|
Liedke,Ana M.R.; Pinheiro,Hudson T.; Floeter,Sergio R.; Bernardi,Giacomo. |
ABSTRACT Among the four butterflyfishes of the genus Chaetodon present in the western Atlantic, the banded butterflyfish Chaetodon striatus has the largest distribution range, spanning 44 degrees of latitude (from Massachusetts, USA to Santa Catarina, Brazil). Although the ecology of the banded butterflyfish has been well studied over its entire range, nothing is known about its phylogeography and how biogeographic barriers structure its populations. To assess the level of genetic connectivity among populations from distinct biogeographic provinces and environmental conditions, we collected samples from seven localities: Puerto Rico, in the Caribbean, and Tamandaré, Salvador, Abrolhos, Trindade Island, Arraial do Cabo and Florianópolis, in Brazil. One... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogeography; Evolution; Mitochondrial Genes; Nuclear Genes; Reef Fish. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000100205 |
| |
|
| |
|
|
Xavier-Filho,José; Oliveira,Antônia Elenir A.; Silva,Luciana Belarmindo da; Azevedo,Cassiana Rocha; Venâncio,Thiago Motta; Machado,Olga Lima T.; Oliva,Maria Luiza; Fernandes,Kátia Valevski S.; Xavier-Neto,José. |
The presence of insulin in plants is not accepted by the scientific community in general. In this review we discuss this paradigm and retrieve information that strongly suggests that insulin is indeed found in plants. We present results, which indicate that a protein molecule with the same amino acid sequence as bovine insulin is expressed in leguminous plants. Additionally, we provide evidence that proteins associated with insulin signalling pathways in vertebrates are also found in association with insulin-like molecules in plants. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insulin; Glucokinin; Peptide hormone; Plants; Amino acid sequence; Evolution. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200002 |
| |
Registros recuperados: 176 | |
|
|
|