Faculties of University Bonn: Search
Now showing items 41-50 of 59
Zur tierökologischen Bedeutung der Elsbeere (Sorbus torminalis L. CRANTZ)
(2018-06-14)
Mit der vorliegenden Dissertation soll das ökologische Beziehungsgeflecht der Elsbeere (Sorbus torminalis) erfasst werden, einer in Deutschland seltenen, in zerstreuten, kleinen Populationen vorkommenden Baumart (Fam. ......
The Significance of the Wild Service Tree (Sorbus torminalis L. Crantz) in Regard to Animal Ecology
This thesis aims to document the ecological web of the wild service tree (Sorbus torminalis) – a ......
The Significance of the Wild Service Tree (Sorbus torminalis L. Crantz) in Regard to Animal Ecology
This thesis aims to document the ecological web of the wild service tree (Sorbus torminalis) – a ......
First revision of the family Metarbelidae Strand, 1909 (Lepidoptera, Cossoidea Leach, 1815) and a phylogeny based on adult morphology of 60 genera from the Afrotropical and Oriental Region
(2019-08-19)
This thesis represents the first revision of the family Metarbelidae Strand, 1909. The author's extensive research on Metarbelidae includes fieldwork made in nine lowland and montane forests of Kenya (1994–2008; 2015–2018) ......
Erste Revision der Familie Metarbelidae Strand, 1909 (Lepidoptera, Cossoidea Leach, 1815) und die Phylogenie basierend auf der Adult-Morphologie von 60 Gattungen der Afrotropischen ......
Erste Revision der Familie Metarbelidae Strand, 1909 (Lepidoptera, Cossoidea Leach, 1815) und die Phylogenie basierend auf der Adult-Morphologie von 60 Gattungen der Afrotropischen ......
Changes of inner teat morphology caused by the milking process and by incomplete milking during dry-off as assessed by innovative technologies
(2020-03-03)
In dairy farming, the timing of the lactation cycle and the way of milk removal differ considerably from the natural conditions. Ensuring good health and wellbeing of farm animals is of great interest from both an economic ...
Contributions towards a better understanding of millipede phylogenetics and sawfly genomics
(2021-03-11)
A loss of biodiversity on a scale and rate comparable to the great extinction events, as a result of anthropogenic activity, has been documented for plants, animals, and micro-organisms. In order to foster a sustainable ...
Electric Imaging in Weakly Electric Fish and Biomimetic Devices
(2022-08-03)
The nocturnal and weakly electric fish Gnathonemus petersii inspects its murky habitats by self-generated electric signals; an adaption called active electrolocation, enabled by the fish's active electric sense. Animals, ......
Electric Imaging – Aktive Elektroortung in schwach elektrischen Fischen und bionischen Sensoren
Der nachtaktive und schwach elektrische Fisch Gnathonemus petersii besitzt einen aktiven elektrischen ......
Electric Imaging – Aktive Elektroortung in schwach elektrischen Fischen und bionischen Sensoren
Der nachtaktive und schwach elektrische Fisch Gnathonemus petersii besitzt einen aktiven elektrischen ......
Ökologie und Populationsstatus der Braunen Hyäne (Parahyaena brunnea, THUNBERG, 1820) auf Farmland in Namibia
(2022-10-13)
Anthropogene Ursachen wie der Verlust von Lebensräumen und die Ausbreitung von Menschensiedlungen sind die Gründe für den Rückgang der Populationen von Carnivoren. In der Vergangenheit wurden umzäunte und geschützte ......
Anthropogenic causes such as habit loss and the spread of human settlements are the reasons behind the decline in carnivore populations. In the past, fenced and protected wildlife areas were seen as a suitable measure to ......
Anthropogenic causes such as habit loss and the spread of human settlements are the reasons behind the decline in carnivore populations. In the past, fenced and protected wildlife areas were seen as a suitable measure to ......
Complement-mediated neuronal loss by sialic acid glycocalyx alterations
(2018-04-23)
Every neuronal cell is covered with a dense structure of glycoconjugates, the glycocalyx. Sialic acids form the terminal ends of the glycocalyx and thus, are more accessible for the cellular environment. Microglia, the ...
Phylogeny and evolution of Adephaga and Neuropterida (Insecta: Holometabola) as inferred from analyses of next-generation sequencing data
(2021-09-17)
Knowing the evolutionary relationships of species is fundamental for comparative studies in biology as well as for biodiversity conservation. The main topic of this thesis is the investigation of phylogenetic relationships ...
Animal-Robot Interactions: Electrocommunication, Sensory Ecology, and Group Dynamics in a Mormyrid Weakly Electric Fish
(2018-12-12)
Mormyrid weakly electric fish possess a specialized electrosensory system. During the process of active electrolocation, these animals perceive self-generated electric organ dis-charges (EOD) and are thereby able to detect ...
Modulation of Nrf2-mediated oxidative stress response in bovine granulosa cells and preimplantation embryos
(2019-11-13)
Nrf2 is a redox sensitive transcription factor involved in regulation of antioxidants defense mechanism against various stressors. Maintaining reactive oxygen species (ROS) within cellular homeostatic levels is crucial for ...