Filtern
Erscheinungsjahr
Dokumenttyp
Sprache
- Deutsch (6218)
- Englisch (65)
- Mehrsprachig (38)
- Französisch (4)
Gehört zur Bibliographie
- nein (6325) (entfernen)
Schlagworte
- Geschichte (1055)
- Zeitschrift (942)
- Baden (336)
- Freiburg im Breisgau (295)
- Karlsruhe (213)
- Kirchengeschichte (202)
- Villingen im Schwarzwald (197)
- Katholische Kirche. Erzdiözese Freiburg (180)
- Villingen-Schwenningen-Villingen (170)
- Bodensee-Gebiet (168)
We present a species list of spiders collected over a period of more than 5 years in a rainforest reserve in central Amazonia
-Reserva Ducke. The list is mainly based on intense sampling by several methods during two years and frequent visual
sampling during 5 years, but also includes records from other arachnologists and from the literature, in total containing 506
(morpho-)specles in 284 genera and 56 families. The species records from this Neotropical rainforest form the basis for a
biodiversity database for Amazonian spiders with specimens from several Brazilian collections and the collection of the
State Museum of Natural History Karlsruhe, where it is housed. This database will in the future facilitate species identification of Neotropical spider collections, allow comparison of morphospecles and serve as an important background for biodiversity evaluation in natural and anthropogenic habitats and the recognition of species distribution and loss. For further evaluation of the structure of Neotropical spider assemblages and their ecological function we present an analysis of the guild structure of the fauna of Reserva Ducke, although we also emphasize the lack of knowledge on natural history and behavior for many of the species.
This paper is the first of a series in which more information will be added to the existing on biogeographical distribution of oribatid mites. Here we describe a new species of a phthiracarid mite collected from forest floor litter in southwestern Nigeria. Differences between this species, Atropacarus (Hoplophorella) nigeriensis, and other Hoplophorella species are the foveoli on the aspis and notogaster, the shape of notogastric setae, as well as shapes and chaetotaxy of the genital and anal plates. More differences in taxonomically important features such as the morphological features of the infracapitulum and epimeron as well as leg chaetotaxy between this species and others could not be determined, not only because of lack of information on the latter in literature, but also because many type specimens are not available for dissection which must be done in order to reveal fine morphological details. Atropacarus (Hoplophorella) nigeriensis belongs to the "cucullata" group of Hoplophorella which possess one enlarged adanal seta. It differs from other members of this group in respect of adanoanal and tarsal chaetotaxy. Hoplophorella is considered as a subgenus of Atropacarus in this paper, because there is no evidence in literature that Hoplophorella as a group is a separate phylogenetic entity.
In this paper, we describe a new species of Mesoplophora collected from forest floor litter in southwestern Nigeria. Mesoplophora is a cosmopolitan genus of pytchoid mites that has been recorded from the Palaearctic region as well as Morocco
and Tchad in the Ethiopian region. M. ife an a is the first Mesoplophora species to be fully identified and described from Nigeria. Differences between this species, M. ifeana, and other Mesoplophora species recorded from Africa are observed in
respect of the number of spines on the sensillus, presence of two pairs of exobothridial setae and leg chaetotaxy. The lack of information on fine taxonomic details of adults and deutonymphs of M. africana from Tchad as well as the discrepancies in the description of certain morphological features such as organisation and chaetotaxy of the ventral plates as well as the nomenclature of setae on the aspis were noted. Attention was drawn to the unique combination of traits of both lower
and higher Oribatida in Mesoplophora, a trait which may be responsible for its ubiquitous distribution.
Naturmuseen haben traditionell die Aufgabe, Schätze der uns umgebenden Natur zu bewahren und der Öffentlichkeit einen Zugang zu ihnen zu eröffnen, der zuallererst auf Anschaulichkeit beruhen sollte. Hierfür ist das Auswahlprinzip des Naturalienkabinetts noch immer nicht überlebt: Der Besucher erwartet Großes, Schönes, Skurriles, Exotisches für ein ergötzliches Betrachten. Dort, wo die Grenzen der Erkennbarkeit (Ludwig Beck betont oft: der Mensch ist ein Augentier)
oder des Ekels und der Lächerlichkeit überschritten werden (die Regenwürmer hat schon Goethe zum Ziel faustischen Spottes gemacht), geht der Schauwert gegen Null. Welche Chance soll also das “einförmige Wurmgewimmel” im Boden, sollen millimeterkleine Bewohner der Bodenstreu im Besucherinteresse haben? So ähnlich hat wohl die Frage gelautet, die sich Direktor Dr. Erwin Jörg stellen musste, als sich 1975 ein Bodenzoologe um die Stelle des Leiters des Bereiches Zoologie im Staatlichen Museum für Naturkunde Karlsruhe bewarb. Schlimmer noch: Es war ein Professor der Universität Bochum, der seine Erfahrungen aus Südamerika bezog und unmissverständlich forderte, Bodenbiologie am Museum Karlsruhe zu etablieren. Was aber kann ein Universitätsmensch mit ausstellungsfernen Forschungsideen Nützliches an einem Museum leisten?
Whip spiders belong to a small arachnid order (Amblypygi) that is not well known. Their most conspicuous feature are
the elongated, extremely thin front legs (“whips“, or antenniform legs). These are no longer used for walking but are modified extremities carrying various sense organs - very much like the antennae of insects. Whereas hundreds of olfactory
hairs are concentrated near the tip of each antenniform leg, large bristles (contact chemoreceptors) are evenly distributed over the entire antenniform leg. The sensory hairs of each antenniform leg contribute about 30,000 small sensory
axons which proceed toward the central nervous system (CNS). The sensory fibers originating from the mechanoreceptive bristles make chemical synapses with a few giant interneurons in the periphery. The giant axons (10-20 pm in diameter) of these large interneurons transmit nerve impulses with a high velocity (6 m/s) to the CNS. The purpose of this fast pathway still needs to be determined. Originally it was thought that the fast giant axons would trigger quick escape reactions, but this was not confirmed in physiological experiments. However, other possible behaviors that may be aided by the giant interneurons are prey capture, fighting, and orientation. What makes whip spiders unique is that both synapses and giant neurons are located far out in the peripheral nervous system. In all other arthropods - except for some arachnids - synapses and giant fiber systems are always found inside the CNS, never in the periphery.
Wir stellen eine Zusammenfassung der Ergebnisse unserer Untersuchungen der südwestdeutschen Oribatidenfauna über 40 Jahre vor. Geographischer Schwerpunkt ist Baden-Württemberg, ökologischer Schwerpunkt sind Waldbiotope. Ergänzt werden diese Schwerpunkte durch einzelne Aufsammlungen in angrenzenden Gebieten wie den Allgäuer Alpen (Bayern), dem Pfälzer Wald, der Umgebung von Mainz und dem Soonwald (Rheinland-Pfalz). Die Taxonomie der 380 gefundenen Oribatidenarten ist in den meisten Fällen durch das Standardwerk von Weigmann (2006) abgedeckt; Funde von 20 Arten stellen Erstnachweise für
Deutschland dar und werden – soweit nicht in Weigmann behandelt – auf der Basis der Originalbeschreibungen vorgestellt. Darüber hinaus werden einige schwierig zu bestimmende Arten oder Formen diskutiert, ergänzend beschrieben und mit Zeichnungen illustriert.