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Dissertation
Genital Homologies and Evolution in moth flies (Diptera, Psychodidae, Psychodinae)
(2017-07-10)
Male genitalia are typically the most important morphological character system in zoological taxonomy and morphology-based phylogenetics. However, to establish their utility and significance in both these fields, a thorough and careful homologization is necessary. The present contribution attempts to view the genitalia of Psychodinae (Diptera: Psychodidae) in the light of recent advances in Diptera genital morphology in order to establish a working understanding of these important character systems and their evolutionary ...
Dissertation
Vergleichend anatomische Studien an den nasalen und vomeronasalen olfaktorischen Organen der Anuren unter funktionsmorphologischen und phylogenetischen Aspekten
(2008-07-11)
Gegenüber anderen sensorischen Systemen wie z. B. optischer oder akustischer Wahrnehmung wurde der olfaktorische Sinn der Anuren von wissenschaftlicher Seite her in der Vergangenheit eher vernachlässigt. Dementsprechend gering sind auch die Erkenntnisse bezüglich der biologischen Bedeutung von Gerüchen für die Froschlurche sowie das Verständnis der damit verbundenen physiologischen Abläufe.
Wie die meisten Tetrapoden besitzen auch Anuren ein mehrteiliges Geruchsorgan, welches im Wesentlichen aus dem klassischen ...
Dissertation
Not the outside but the inside matters : functional analysis of Capricious and Tartan during Drosophila tracheal morphogenesis
(2004-02-03)
The tubular structures, which transport essential gases, liquids, or cells from one site to another, are shared among various divergent organisms. These highly organized tubular networks include lung, kidney, vasculature and mammary gland in mammals as well as trachea and salivary gland in Drosophila melanogaster. Many questions regarding the tubular morphogenesis cannot be addressed sufficiently by investigating the mammalian organs because their structures are extremely complex and therefore, systematic analyses ...
Dissertation
The anatomy of velvet worms (Onychophora) as revealed by a multimethodological approach and three-dimensional reconstructions
(2024)
Onychophorans, or velvet worms, comprise a small group of worm-like, multi-legged terrestrial invertebrates. Since their discovery in 1826, these organisms have been investigated from different perspectives, particularly in the field of morphology—a discipline that provides the basis for functional and evolutionary inferences. Onychophorans are currently classified within Ecdysozoa (moulting animals) and form together with Tardigrada (water bears) and Arthropoda a clade named Panarthropoda. Therefore, onychophorans ...