E-Dissertationen: Search
Now showing items 1-10 of 19
Homology Assessment in Molecular Phylogenetics: Evaluation, Improvement, and Influence of Data Quality on Tree Reconstruction
(2012-01-12)
Considering the final goal of every phylogenetic analysis, the reconstruction of taxon relationships from underlying data, little attention has been paid to the role of alignment accuracy and its impact on tree reconstruction. ...
Analysis of the Rubbing Behaviour of Psammophiids: A Methodological Approach
(2011-01-19)
Several snakes belonging to the eight genera of the family Psammophiidae are the sole known snakes to smear the secretion of their nasal gland on their own belly and flanks by little rapid head movements. The main objective ...
Molecular insights to crustacean phylogeny
(2010-03-02)
This thesis aims to resolve internal relationships of the major crustacean groups inferring phylogenies with molecular data. New molecular and neuroanatomical data support the scenario that the Hexapoda might have evolved ...
Limitation of body mass of herbivores: Allometry of food quality and of digestive aspects
(2010-10-13)
That the length of digesta passage rate of large herbivores was influenced by the BM of the animal was discussed controversial in the past and recently. However, recent studies with increasing data sets show tendencies to ...
Vom Verhalten zum fiktiven Fressen: Anatomie und Elektrophysiologie des muskulären und neuronalen Systems der Nahrungsaufnahme von Dipteren-Larven (Calliphora vicina, Drosophila virilis und Drosophila melanogaster)
(2010-03-29)
In dieser Arbeit wurde versucht, auf Basis klassischer neurobiologischer Methoden das larvale Fressverhalten von cyclorraphen Dipteren, im Speziellen von Drosophila melanogaster, als Modellsystem für die Untersuchung ...
Influence of altered gravity on the oxidative burst in macrophages
(2013-12-10)
The recognition of pathogen patterns followed by the production of reactive oxygen species (ROS) during oxidative burst is one of the major functions in macrophages. This process is the first line of defence which is crucial ...
Evolution of chloroplast sequestration in Sacoglossa (Mollusca, Gastropoda)
(2014-08-12)
Sacoglossa (Gastropoda, Panpulmonata) is a small taxon of marine gastropods with about 300 described species. It consists of two major lineages: the shelled Oxynoacea and the shell-less Plakobranchacea. The latter is ...
Untersuchungen zur Phylogenie der Cirratulidae (Annelida)
(2014-02-07)
Die phylogenetische Position der Cirratulidae innerhalb der sedentären Polychaeten ist bisher nicht zufriedenstellend aufgeklärt. Historisch wurden die Cirratulidae nahe zu den Spionidae bzw. zu den Terebellida gezählt. ...
The homeodomain of the Drosophila Ceramide Synthase Schlank confers nuclear import information and DNA binding capabilities
(2014-05-15)
Ceramide Synthases (CerS) are membrane bound enzymes at the center of the sphingolipid synthesis cascade. A sub-class of CerS also codes for a homeodomain of unknown function.
We previously identified the ...
We previously identified the ...
Ecology and Population Status of the Puku Antelope (Kobus vardonii LIVINGSTONE, 1857) in Zambia
(2014-02-18)
Road surveys along line transects were conducted at different times during the dry season. Puku occurred in small to large groups. They preferred grassland where estimated population densities were 36.15 puku/km² in Kasanka ...