Substrate-borne vibrational signals are emitted by males and females of the treehopper species, Umbonia crassicornis in a variety of contexts throughout their lives. The goal of this research was to investigate variation in signal structure in these various contexts in order to identify the specific functions of distinct signals. We report a number of previously undescribed behaviors and signals in this species, including male pre-copulatory genital scraping, a possible female rejection signal, and a competitive male masking signal. In addition to these observations, our experiments resulted in 4 major findings: (1) females provide cues within their responses concerning their degree of attraction to male calls, (2) males eavesdrop on duets emitted by competing males and receptive females, (3) males emit distinct signals in competitive interactions which function as masking calls, and (4) the duration and temporal context of antipredator signals in females vary with reproductive status and offspring development. Our findings reveal that vibrational signals mediate conspecific interactions at every stage of adult life in U. crassicornis. The temporal and spectral qualities of these signals undergo distinct changes in different contexts and in response to different stimuli, likely providing receivers with information on a signaler’s intensions.
Some files may require a special program or browser plug-in. More Information
|Advisor:||Miles, Carol I.|
|Commitee:||Clark, Anne B., Miles, Carol I., Miles, Ron, Shepherd, Julian, Stoever, Jennifer|
|School:||State University of New York at Binghamton|
|School Location:||United States -- New York|
|Source:||DAI-B 78/05(E), Dissertation Abstracts International|
|Keywords:||Behavioral ecology, Insect communication, Substrate-borne, Vibrational signaling|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be