Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Signal evolution"”.
-
Comparative chemical ecology, behaviour, and evolutionary genetics of acanthodactlylus boskianus (Squamata: Lacertidae) : comparative chemical ecology, behaviour and evolution
… of femoral gland secretions in communication and signal evolution of A. boskianus. These are behaviour, chemical and DNA analyses techniques.Behavioural bioassays in different experiments showed that the femoral gland secretions are used in communication between the lizards. Communication includes …
-
Optical Characterization of chemically doped and/or intercalated thin layers graphene: Raman and Contrast Study
… chapter investigates graphene enhanced raman signal of halogen molecules adsorbed onto and intercalated into graphene. We analyze and model the intramolecular electronic, charge transfer, and multiple reflection electromagnetic mechanisms responsible for the unusual sensitivity. We attribute …
-
An Automated Syringe Pump System For Improving The Reproducibility of Dynamic Hyperpolarized Mri Phantoms
… spin state through chemical conversion, the signal from pyruvate and metabolites such as lactate can be observed. Although the signal is largely increased, this improvement is short lived. The hyperpolarization of pyruvate only lasts for a few minutes and this time is shortened when in the …
-
Polymorphic mating signals and female choice in an Amazonian frog
… of the most important mechanisms responsible for signal evolution and assortative mating. My thesis integrates genetic analysis, behavioral assays and morphological observations to understand the evolution of polymorphic male mating signals in the frog Peters’ Dwarf Frogs (Physalaemus petersi). In …
-
Intrasexual selection and warning color evolution in an aposematic poison dart frog
… to predators. Recent research suggests these signals can also function in the context of mate choice. Studies of warning color evolution can therefore provide new insights into how the interplay of natural and sexual selection impact the trajectory of conspicuous signal evolution. For my …