Date of Award
College of Natural Science and Mathematics, Biological Sciences
Robin M. Tinghitella
Jonathan P. Velotta
Behavior, Natural selection, Neurophysiology, Ormia ochracea, Rapid evolution, Teleogryllus oceanicus
The diversification of animal communication systems is driven by many interacting factors. Unintended receivers play an important part in this process, yet little is known about their role in signal evolution. Flies of the genus Ormia are parasitoids of crickets and rely on acoustic cues to locate hosts. In Hawaii, selection imposed by Ormia ochracea has led to recent and rapid diversification in the songs of their host. Here, we compare neural and behavioral responses of Hawaiian flies to those of an ancestral population to understand the role of parasitoid sensory and behavioral variation in the evolution of host songs. We demonstrate evolved differences in the auditory tuning and behavioral responses of Hawaiian flies that are likely facilitating the detection of the novel songs. This work heeds the recent call for better integration of the sensory and cognitive mechanisms of receivers into our understanding of the evolution of animal communication.
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Aaron W. Wikle
Received from ProQuest
Wikle, Aaron W., "Neural and Behavioral Evolution in an Eavesdropper with a Rapidly Evolving Host" (2023). Electronic Theses and Dissertations. 2244.
Ecology, Evolution and development, Neurosciences
Available for download on Thursday, August 01, 2024