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| Registros recuperados: 176 | |
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| Wägele, Johann-Wolfgang. |
| The evolution of the stygobiontic isopods is discussed correlating the phylogenetic system with biogeography. All stygobiontic isopods probably are derived from remote marine ancestors. The colonization of subterranean aquatic biotopes occurred in two ways: (1) via the coastal groundwater in the case of the Microparasellidae, Gnathostenetroididae, Stenetriidae, and in Cyathura (Stygocyathura), (2) in most families, however, via epigean freshwater ancestors. Ancient freshwater isopods that must already have existed before the Cretaceous and whose stygobiontic phylogenetic lines partly must have existed before the opening of the Atlantic are the Aselloidea, Calabozoida, Phreatoicidea, and probably also the Protojaniridae. In the course of Cretaceous and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Isopoda; Evolution; Stygofauna; Biogeography. |
| Ano: 1990 |
URL: http://www.repository.naturalis.nl/record/504433 |
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| Natchev, N.; Tzankov, N.; Vergilov, V.; Kummer, S.; Handschuh, S.. |
| The snake-eyed skink Ablepharus kitaibelii is one of the smallest European lizards, but despite its minute size it is able to feed on comparatively large prey. Here we investigate the diet of A. kitaibelii and the mechanisms that allow the skink to overpower relatively large and even noxious prey. High-speed cinematography showed that A. kitaibelii uses a series of shaking and battering movements to immobilise and kill prey prior to swallowing. During this process, the skinks rises up on the hind limbs and then whacks the prey sidewise on the substrate by twisting the trunk, neck and head laterally. Our analysis showed that the shaking kinematics is very uniform among the investigated specimens. The morphological investigation of the cranio-cervical system... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Evolution; Feeding; Neck; Odontoid; Parallel; Skink; ΜCT; 42.82. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/515947 |
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| Weers, D.J. van. |
| Measurements of many hundreds of the high-crowned cheek teeth of Hystrix specimens from the Euro-Asiatic Pleistocene in the collections of European and Asiatic institutions have been compared with extant species for a revision of the genus. A review is given about the extant genera and species of the family. The number of recognisable Euro-Asiatic species in the fossil record is reduced from eight to five. The European H. (A.) vinogradovi Argyropulo, 1941 is here considered to be a synonym of H. (A.) brachyura Linnaeus, 1758, and the three Asiatic species H. (H.) crassidens Lydekker, 1886, H. (H.) gigantea Van Weers, 1985 and H. (H.) magna Pei, 1987 are synonymized with H. (H.) refossa Gervais, 1852. Most of the Chinese fossil specimens are properly... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Porcupines; Asia; Evolution; Europe; Paleogeography; Pleistocene; 42.84. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/209654 |
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| Jung, T.; Stukely, M.J.C.; Hardy, G.E.St.J.; White, D.; Paap, T.; Dunstan, W.A.; Burgess, T.I.. |
| During surveys of dying vegetation in natural ecosystems and associated waterways in Australia many new taxa have been identified from Phytophthora ITS Clade 6. For representative isolates, the region spanning the internal transcribed spacer region of the ribosomal DNA, the nuclear gene encoding heat shock protein 90 and the mitochondrial cox1 gene were PCR amplified and sequenced. Based on phylogenetic analysis and morphological and physiological comparison, four species and one informally designated taxon have been described; Phytophthora gibbosa, P. gregata, P. litoralis, P. thermophila and P. taxon paludosa. Phytophthora gibbosa, P. gregata and P. taxon paludosa form a new cluster and share a common ancestor; they are homothallic and generally... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Aquatic habitat; Breeding systems; Evolution; Phylogeny; Radiation; Sterility; Survival. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/532234 |
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| Laurin, M.. |
| Absolute (Linnaean) ranks are essential to rank-based nomenclature (RN), which has been used by the vast majority of systematists for the last 150 years. They are widely recognized as being subjective among taxonomists, but not necessarily in other fields. For this reason, phylogenetic nomenclature (PN) and other alternative nomenclatural systems have been developed. However, reluctance to accept alternative nomenclatural systems and continued use of higher taxa of a given Linnaean category in comparative analyses presumably reflect a lack of appreciation of the deleterious effects of the subjective nature of Linnaean categories in other biological fields, such as conservation and evolutionary biology. To make that point clearer, evolutionary models under... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Biological nomenclature; Codes of nomenclature; Comparative biology; Evolution; PhyloCode; Phylogenetic; Nomenclature; 42.21. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/361032 |
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| 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 |
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| Wesselingh, F.P.. |
| Miocene deposits in western Amazonia and adjacent areas of South America harbour a diverse suite of endemic corbulid bivalves, commonly referred to as Pachydontinae, that show a wide variety of morphologies. Especially in the Miocene Pebas Formation (Peru, Colombia and Brazil), this group diversified spectacularly. Since these corbulids (a cosmopolitan marine and perimarine bivalve family) occur with freshwater taxa and yield isotope signals strongly indicative of freshwater settings, the success of this group in inland basins of Miocene northwestern South America is surprising. In this paper it is argued that a combination of adaptations to fluid bottom substrates, common dysoxia and high predation intensities explains their abundance, their morphological... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Corbulidae; Pachydontinae; Miocene; Amazonia; Evolution; Adaptation; 42.73; 38.22. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/209734 |
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| Takamatsu, S.; Niinomi, S.; Harada, M.; Havrylenko, M.. |
| Podosphaera is a genus of the powdery mildew fungi belonging to the tribe Cystotheceae of the Erysiphaceae. Among the host plants of Podosphaera, 86 % of hosts of the section Podosphaera and 57 % hosts of the subsection Sphaerotheca belong to the Rosaceae. In order to reconstruct the phylogeny of Podosphaera and to determine evolutionary relationships between Podosphaera and its host plants, we used 152 ITS sequences and 69 28S rDNA sequences of Podosphaera for phylogenetic analyses. As a result, Podosphaera was divided into two large clades: clade 1, consisting of the section Podosphaera on Prunus (P. tridactyla s.l.) and subsection Magnicellulatae; and clade 2, composed of the remaining member of section Podosphaera and subsection Sphaerotheca. Because... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 28S rDNA; Evolution; ITS; Molecular clock; Phylogeny; Powdery mildew fungi; Rosaceae. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/532391 |
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| Mooers, Arne Ø.; Schluter, Dolph. |
| How do traits change through time and with speciation? We present a simple and generally applicable method for comparing various models of the macroevolution of traits within a maximum likelihood framework. We illustrate four such models: 1) variance among species accumulates in direct proportion to time separating them (gradual model); 2) variation accumulates with the number of speciation events separating them (speciational model); 3) differences between species are unrelated to phylogenetic relatedness (pitchfork model); and 4) a free model where the trait evolves at its own idiosyncratic rate among lineages. Using species-specific body size, we compare the four models across two data sets: twenty-one clades of vertebrate species, and two clades of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Brownian motion; Macroevolution; Maximum likelihood; Phylogenies; Vertebrate body size; Evolution. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/534379 |
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| Mayhew, D.F.. |
| Re-examination of the two teeth constituting the original type and genotype material of Villanyia exilis KRETZOI, 1956 from Villány-5, Hungary, indicates that subsequently published descriptions need revision. The tooth selected as the lectotype of Villanyia exilis by RABEDER (1981) is considered here to belong to Clethrionomys kretzoii (KOWALSKI, 1958). The second specimen, with morphology in accordance with the original description of Kretzoi, is considered to represent the characters of Villanyia exilis. In order to stabilise the nomenclature in accordance with current usage an application has been made to the International Commission on Zoological Nomenclature. The fine structure of the enamel of Villanyia exilis as defined above is described for the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Voles; Pliocene; Pleistocene; Taxonomy; Evolution; Europe; Enamel structure. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/659250 |
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| 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 |
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| Arrigoni, R.; Benzoni Danwei Huang, Hironobu Fukami, Chaolun Allen Chen, Michael L. Berumen, Mia Hoogenboom, Damian P. Thomson, Bert W. Hoeksema, Ann F. Budd, Yuna Zayasu, Tullia I. Terraneo, Yuko F. Kitano, Andrew H. Baird, F.; Huang, D.; Fukami, H.; Chen, C.A.; Berumen, M.L.; Hoogenboom, M.; Thomson, D.P.; Hoeksema,, B.W.; Budd, A.F.; Zayasu, Y.; Terraneo, T.I.; Kitano, Y.F.; Baird, A.H.. |
| The scleractinian family Lobophylliidae is undergoing a major taxonomic revision thanks to the combination of molecular and morphological data. In this study, we investigate the evolutionary relationships and the macro- and micromorphology of six nominal coral species belonging to two of the nine molecular clades of the Lobophylliidae, clades A and B, and of Symphyllia wilsoni, a lobophylliid species analyzed from a molecular point of view for the first time. Sequence data from mitochondrial DNA (COI and the intergenic spacer between COI and l-rRNA), and nuclear DNA (histone H3 and ITS region) are used to generate robust molecular phylogenies and a median-joining haplotype network. Molecular results are strongly in agreement with detailed observations of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coral; Evolution; Phylogeny; Systematics; Taxonomy. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/619236 |
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| Registros recuperados: 176 | |
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