108,852 research outputs found
Pandeleteius distinctus Voss
No full text<i>Pandeleteius distinctus</i> (Voss) <p>(Fig. 20)</p> <p> <i>Hadromeropsis (Pandeleteinus) distinctus</i> Voss 1954: 232. <i>Pandeleteius distinctus</i> (Voss): Howden 1982: 2.</p> <p> <b>Diagnosis</b> (based on Voss’s description and his interpretation of <i>Hadromeropsis</i> and <i>Pandeleteinus</i>). Length 3.5 mm. Scales of dorsal surface predominantly brown, thorax with two narrow gray vittae, elytral suture and sides of elytra gray, gray areas blending in with the brown and forming an indistinct oblique band on the apex of the elytra. Setae very short, curved. Frons twice as wide as length of eyes and as wide as rostrum, eyes moderately strongly convex. Antennal club twice as long as wide, spindle-shaped. Thorax as long as wide, sides rather strongly and symmetrically rounded, slightly wider anteriorly; basal and apical constrictions of equal width; disc between scales interspersed with shiny wrinkles. Elytra in dorsal outline with sides parallel, straight to apical third, here strongly rounded to the narrowed apex, the latter short, attenuated, beak-like; strial punctures fine, intervals wide and flat. Fore coxae “continuous” (see remarks). Fore femur very enlarged, fore tibia straight, only apex very feebly bent inwards and inner edge tuberculate-dentate; segments 1 and 2 of fore tarsus equal in length, each somewhat longer than wide, robust.</p> <p> <b>Remarks.</b> Voss (1954:232) considered <i>Pandeleteius distinctus</i> to belong to the former subgenus <i>Pandeleteinus</i> Champion (1911) on the grounds that its fore coxae were contiguous, as in <i>Pandeleteinus submetallicus</i> Schaeffer. In fact, <i>Pandeleteinus submetallicus</i> and all subsequently described species of <i>Pandeleteius</i> have separate fore coxae, although they may appear to be contiguous if the coxae obscure the area.</p> <p> <i>Pandeleteius distinctus</i> was evidently described from a single specimen (single measurement, single locality), probably a male (fore coxae “contiguous”, fore femur “very enlarged”). This type was “destroyed in the war” with the Voss collection (Voss, in litt., 22 May 1963; Weidner 1976:129), the label data are “Südperu: Ica (21.3.1936, Hamb. Südperu-Expedition)”.</p> <p> The description of <i>P. d i s t i n c t u s</i> differs from that of <i>P. peruvianus</i> (see below) in: 1) sides of prothorax rather strongly and symmetrically rounded, 2) prothorax with “shiny wrinkles” interspersed between the scales, 3) fore coxae “contiguous” as in <i>Pandeleteius griseus</i> Voss, 4) apex of elytra rounded, shortly beakshaped as in <i>P. g r i s e u s</i>, 5) fore femur greatly enlarged. All of these descriptors are too imprecise to be useful for comparative purposes, with the possible exception of the surface of the prothorax. The descriptor “shiny wrinkles” may relate to an abraded specimen, although there is a color pattern given for the prothorax.</p> <p> Voss compared <i>P. distinctus</i> with <i>P. g r i s e u s</i> on characters common to many species: straight fore tibia, different shape of the thorax and scales as well as flatter eyes. <i>Pandeleteius griseus</i> has a wide range east of the Andes. Voss also associated <i>P. d i s t i n c t u s</i> with the Costa Rican <i>P. (Exmenetypus) hieroglyphicus</i> Champion on the insubstantial grounds of elytral markings and form of the prothorax, acknowledging that <i>P. d i s t i n c t u s</i> does not have the primary subgeneric character of <i>Exmenetypus:</i> the abruptly raised apex of the rostrum.</p> <p> Assuming that the type of <i>P. distinctus</i> was in fact a male, there is still insufficient evidence to establish its identity as either a distinct species or as a synonym of <i>P. baccharis</i> or <i>P. peruvianus.</i></p>Published as part of <i>Howden, Anne T., 2008, The species of Pandeleteius Schoenherr of coastal Chile and Peru (Coleoptera, Curculionidae), pp. 55-62 in Zootaxa 1773</i> on page 60, DOI: <a href="http://zenodo.org/record/182167">10.5281/zenodo.182167</a>
Pandeleteius peruvianus Voss
No full textPandeleteius peruvianus Voss (Fig. 20) Pandeleteius peruvianus Voss 1954: 230. Diagnosis (based on Voss’s description). Length 3.5–4.7 mm. Scales predominantly gray, head and thorax medially with wide brown vitta, elytra beside suture with brown spots, apical third with narrow, C-shaped oblique band; brown color in part somewhat “copperglazed”. Setae very short, curved. Frons twice as wide as length of eyes, eyes slightly convex. Antennal club twice as long as wide, as long as segments 2 to 7 of funicle. Thorax almost as long as wide, greatest width anteriorly of middle, sides moderately strongly rounded; basal and apical constrictions cylindrical, of equal width; disc finely and not densely punctured among the scales. Elytral declivity in one sex in profile slightly concave and apex more attenuate; sutural interval at summit of declivity with setae longer, scales paler; intervals much wider than striae. Fore femur much more enlarged than the others, easily half as enlarged as width of thorax. Tibiae straight, fore tibia slightly curved inwards at apex and drawn out in a spine, inner edge sharply dentate. Remarks. Voss compared P. peruvianus with P. variegatus, the only Pandeleteius species known from coastal Peru at that time, but apparently did not see a specimen of P. variegatus (“... P. variegatus MIGHT possess an even wider head..,...the peculiar curved elytral apices in one sex MAY be missing in this species...”, Voss 1954: 231). Because his knowledge of P. v a r i e g a t u s was limited to the illustration and description, his comment on its wider head is understandable (see P. variegatus). The characteristics of P. peruvianus that suggest that its description may apply to baccharis are: 1) elytral declivity slightly concave, apex more attenuate “in one sex”, 2) the longer setae on the sutural interval at the summit of the declivity with longer setae and paler scales IN BOTH SEXES, and 3) the brown color in part somewhat “copperglazed”. Descriptors that do not seem to apply to P. baccharis are: 1) thorax with sides moderately strongly rounded, and 2) fore tibia drawn out in a spine. Because of the Second World War, the publication of Voss’s (1954) work on the Curculilonidae of Peru was delayed for years after it was written and after the types were destroyed. Thus, P. baccharis Kuschel was published earlier and its name has priority over peruvianus and distinctus, whether or not these are synonymous with baccharis. Specimens of Pandeleteius from southwestern Peru are needed to determine the status of P. peruvianus. The type series was also “destroyed in the war” (Voss, in litt., 22 May 1963: Weidner 1976: 129); the label dates are “Südperu: Hac.[Hacienda?] (28.3.1936, Hamb. Südperu-Expedition)”; Viscas- Tal, “in 1000 Höhe (5.4.1936, Hamb. Südperu-Expedition)”.Published as part of Howden, Anne T., 2008, The species of Pandeleteius Schoenherr of coastal Chile and Peru (Coleoptera, Curculionidae), pp. 55-62 in Zootaxa 1773 on page 61, DOI: 10.5281/zenodo.18216
Abstract shapes of RNA
No full textGiegerich R, Voss B, Rehmsmeier M. Abstract shapes of RNA. Nucleic Acids Research. 2004;32(16):4843-4851.The function of a non-protein-coding RNA is often determined by its structure. Since experimental determination of RNA structure is time-consuming and expensive, its computational prediction is of great interest, and efficient solutions based on thermodynamic parameters are known. Frequently, however, the predicted minimum free energy structures are not the native ones, leading to the necessity of generating suboptimal solutions. While this can be accomplished by a number of programs, the user is often confronted with large outputs of similar structures, although he or she is interested in structures with more fundamental differences, or, in other words, with different abstract shapes. Here, we formalize the concept of abstract shapes and introduce their efficient computation. Each shape of an RNA molecule comprises a class of similar structures and has a representative structure of minimal free energy within the class. Shape analysis is implemented in the program RNAshapes. We applied RNAshapes to the prediction of optimal and suboptimal abstract shapes of several RNAs. For a given energy range, the number of shapes is considerably smaller than the number of structures, and in all cases, the native structures were among the top shape representatives. This demonstrates that the researcher can quickly focus on the structures of interest, without processing up to thousands of near-optimal solutions. We complement this study with a large-scale analysis of the growth behaviour of structure and shape spaces. RNAshapes is available for download and as an online version on the Bielefeld Bioinformatics Server
Areal-Bestimmung des Kaiserreichs Russland, mit Ausnahme von Finnland und Polen
No full textvon G. SchweizerAus dem Bulletin hist.-phil., T. XVI, No 24-27, 30-36
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Le pays de Voss et du Hardanger Fjord
No full textVallaux Camille. Le pays de Voss et du Hardanger Fjord . In: Annales de Géographie, t. 20, n°114, 1911. pp. 396-410
Among The Guest Were Mrs. T. J. Guthrie, Hugh Byler, Sue Blackman And Mrs. Les Voss, From Left.
No full textPhotograph used for a story in the Daily Oklahoman newspaper. Caption: "Among the guest were Mrs. T. J. Guthrie, Hugh Byler, Sue Blackman and Mrs. Les Voss, from left.
Pollen limitation and inbreeding depression in an ‘old rare’ bumblebee-pollinated grassland herb
No full textHabitat fragmentation and reduction of population size have been found to negatively affect plant reproduction in 'new rare' species that were formerly common. This has been attributed primarily to effects of increased inbreeding but also to pollen limitation. In contrast, little is known about the reproduction of 'old rare' species that are naturally restricted to small and isolated habitats and thus may have developed strategies to cope with long-term isolation and small population size. Here we study the effects of pollen source and quantity on reproduction of the 'old rare' bumblebee-pollinated herb, Astragalus exscapus. In two populations of this species, we tested for pollen autodeposition, inbreeding depression and outbreeding depression. Caged plants were left unpollinated or were pollinated with pollen from the same plant, from the same population or from a distant population (50 km). Additionally, we tested for pollen limitation by pollen supplementation in four populations of different size and density. In the absence of pollinators, plants did not produce seed whereas self-pollinated plants did. This indicates a self-compatible breeding system dependent on insect pollination. Both self-pollination and, in one of the two populations, cross-pollination with pollen from plants from the distant population resulted in a lower number of seeds per flower than cross-pollination with pollen from plants from the resident population, indicating inbreeding and outbreeding depression. Pollen addition enhanced fruit set and number of seeds per flower in three of the four populations, indicating pollen limitation. The degree of pollen limitation was lowest in the smallest but densest population. Our results suggest that, similar to 'new rare' plant species, also 'old rare' species may be at risk of inbreeding depression and pollen limitation.German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt
Editorial: Cardiorespiratory Coupling-Novel Insights for Integrative Biomedicine
No full textNo abstract availabl
Analysis of blood pressure waveform: a new method for the classification of hypertensive pregnancy disorders.
No full text© Nature Publishing GroupProposes a method for the classification of hypertensive pregnancy disorders. Analysis of blood pressure waveforms; Types of pregnancy hypertension disorders; Occurrence of preeclampsia in hypertensive pregnant women.R Faber, H Stepan, M Baumert, A Voss and T Walthe
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