Keywords
Ecological differentiation, microbial community, mosaic evolution
Abstract
The spotted bird grasshopper, Schistocerca lineata Scudder (Orthoptera: Acrididae), is a widely distributed species found throughout most of the continental United States and southern Canada. This species is known to be highly variable in morphology, with many distinct ecotypes across its native range. These ecotypes display high levels of association with type-specific host plants. Understanding the evolutionary relationships among different ecotypes is crucial groundwork for studying the process of ecological differentiation. I examine four ecotypes from morphological and phylogeographic perspectives, and look for evidence of distinct evolutionary lineages within the species. I also begin to explore the potential role of the microbial community of these grasshoppers in ecological divergence by using 454 pyrosequencing to see if the microbial community structure reflects the ecology of the grasshoppers. I find support for a distinct aposematic lineage when approaching the data from a phylogeographic perspective and also find that this ecotype tends to harbor a unique bacterial community, different from that of a single other ecotype.
Notes
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Graduation Date
2014
Semester
Spring
Advisor
Song, Hojun
Degree
Master of Science (M.S.)
College
College of Sciences
Department
Biology
Degree Program
Biology
Format
application/pdf
Identifier
CFE0005540
URL
http://purl.fcla.edu/fcla/etd/CFE0005540
Language
English
Release Date
November 2014
Length of Campus-only Access
None
Access Status
Masters Thesis (Open Access)
Subjects
Dissertations, Academic -- Sciences; Sciences -- Dissertations, Academic
STARS Citation
Raszick, Tyler, "Character Evolution and Microbial Community Structure in a Host-associated Grasshopper" (2014). Electronic Theses and Dissertations. 4573.
https://stars.library.ucf.edu/etd/4573