Date of Award
2023
Document Type
Masters Thesis
Degree Name
M.S.
Organizational Unit
College of Natural Science and Mathematics, Biological Sciences
First Advisor
Robin M. Tinghitella
Second Advisor
Norman Lee
Third Advisor
Jonathan P. Velotta
Fourth Advisor
Erica Larson
Keywords
Behavior, Natural selection, Neurophysiology, Ormia ochracea, Rapid evolution, Teleogryllus oceanicus
Abstract
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.
Publication Statement
Copyright is held by the author. User is responsible for all copyright compliance.
Rights Holder
Aaron W. Wikle
Provenance
Received from ProQuest
File Format
application/pdf
Language
en
File Size
48 pgs
Recommended Citation
Wikle, Aaron W., "Neural and Behavioral Evolution in an Eavesdropper with a Rapidly Evolving Host" (2023). Electronic Theses and Dissertations. 2244.
https://digitalcommons.du.edu/etd/2244
Copyright date
2023
Discipline
Ecology, Evolution and development, Neurosciences